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197947 Commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Linus Torvalds
|
abe71eb32f |
virtio,vdpa: fixes
Fixes all over the place, most notably fixes for latent
bugs in drivers that got exposed by suppressing
interrupts before DRIVER_OK, which in turn has been
done by 8b4ec69d7e09 ("virtio: harden vring IRQ").
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Pull virtio fixes from Michael Tsirkin:
"Fixes all over the place, most notably fixes for latent bugs in
drivers that got exposed by suppressing interrupts before DRIVER_OK,
which in turn has been done by 8b4ec69d7e09 ("virtio: harden vring
IRQ")"
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
um: virt-pci: set device ready in probe()
vdpa: make get_vq_group and set_group_asid optional
virtio: Fix all occurences of the "the the" typo
vduse: Fix NULL pointer dereference on sysfs access
vringh: Fix loop descriptors check in the indirect cases
vdpa/mlx5: clean up indenting in handle_ctrl_vlan()
vdpa/mlx5: fix error code for deleting vlan
virtio-mmio: fix missing put_device() when vm_cmdline_parent registration failed
vdpa/mlx5: Fix syntax errors in comments
virtio-rng: make device ready before making request
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Linus Torvalds
|
0678afa605 |
LoongArch fixes for v5.19-rc2
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Vincent Whitchurch
|
eacea84459 |
um: virt-pci: set device ready in probe()
Call virtio_device_ready() to make this driver work after commit
b4ec69d7e09 ("virtio: harden vring IRQ"), since the driver uses the
virtqueues in the probe function. (The virtio core sets the device
ready when probe returns.)
Fixes: 8b4ec69d7e09 ("virtio: harden vring IRQ")
Fixes: 68f5d3f3b654 ("um: add PCI over virtio emulation driver")
Signed-off-by: Vincent Whitchurch <vincent.whitchurch@axis.com>
Message-Id: <20220610151203.3492541-1-vincent.whitchurch@axis.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Johannes Berg <johannes@sipsolutions.net>
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Linus Torvalds
|
36a2366379 |
arm64 fixes for 5.19-rc2:
- SME save/restore for EFI fix - incorrect logic for detecting the need for saving/restoring the FFR state. - SME fix for a CPU ID field value. - Sysreg generation awk script fix (comparison operator). - Some typos in documentation or comments and silence a sparse warning (missing prototype). -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEE5RElWfyWxS+3PLO2a9axLQDIXvEFAmKjfnMACgkQa9axLQDI XvFaZQ/7B4KO2DCVy9EgUQn6sC+9fIra60nb4INGezzyxPgYvPfeX51U16jaxNXB iPAQCJy5RKOioN76Ew8HgQd6UHGyspjLGC8Va/xvnGzWa4zSEqX6uFx7t7t6p2G7 CgP2BjF7hQEaRZoluhs5b3lXKnVx2zooLp7HBRaVukGd1f75evSUE68hOqSLX2DO bhFGyCsOlpZyKC0HwVA2bl2ozaujQFAp+MHvzsb+yRdHc/IhNaaqpACrarUGXinR Dj4kQ/lo3nh7nNsVpsq0xwtwGV+3LrlIhIhyIMTUNE5fTCq7IlN8yy/j7yeMDhMb jSKPz+n9ZzHOBF2rwK4zmQC/1Pe0HFHWq/kCB66kUrtjFug9rJeTcUThkpSay7Ya 2HEYwdPvT59OAw+IPSFtHQD5XOV33ci8wykLT8dV4mffrWtY9nx6E3xlCW8/5Ue8 Q3ti08gN3aARUMj8sJTE/E/O02idMoU/pSzaqowtG8psZxSFf9DSZGs1WjvKVKRj x4JGzBv5egAk/fSDw5NbMCAh1KW94Wm1pdXYdzYp90iJQwPfXrf5YyJ+c2FzuuIj 8YW7jxq/dBp880yWFa77d41uzauWsIpflaekzCnLBz7oXOrkpQBVxRAOEwWA35Fx JKeAqJieyPILymSM9e1HnBRYR5WQztPSFwHmCnUiVwCIOHM6kl4= =dll5 -----END PGP SIGNATURE----- Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 fixes from Catalin Marinas: - SME save/restore for EFI fix - incorrect logic for detecting the need for saving/restoring the FFR state. - SME fix for a CPU ID field value. - Sysreg generation awk script fix (comparison operator). - Some typos in documentation or comments and silence a sparse warning (missing prototype). * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: Add kasan_hw_tags_enable() prototype to silence sparse arm64/sme: Fix EFI save/restore arm64/fpsimd: Fix typo in comment arm64/sysreg: Fix typo in Enum element regex arm64/sme: Fix SVE/SME typo in ABI documentation arm64/sme: Fix tests for 0b1111 value ID registers |
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Catalin Marinas
|
78cdaf3f42 |
arm64: Add kasan_hw_tags_enable() prototype to silence sparse
This function is only called from assembly, no need for a prototype declaration in a header file. In addition, add #ifdef around the function since it is only used when CONFIG_KASAN_HW_TAGS. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Reported-by: kernel test robot <lkp@intel.com> |
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Linus Torvalds
|
f2ecc964b9 |
xen: branch for v5.19-rc2
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Mark Brown
|
2e990e6322 |
arm64/sme: Fix EFI save/restore
The EFI save/restore code is confused. When saving the check for saving
FFR is inverted due to confusion with the streaming mode check, and when
restoring we check if we need to restore FFR by checking the percpu
efi_sm_state without the required wrapper rather than based on the
combination of FA64 support and streaming mode.
Fixes: e0838f6373e5 ("arm64/sme: Save and restore streaming mode over EFI runtime calls")
Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20220602124132.3528951-1-broonie@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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Xiang wangx
|
bb314511b6 |
arm64/fpsimd: Fix typo in comment
Delete the redundant word 'in'. Signed-off-by: Xiang wangx <wangxiang@cdjrlc.com> Link: https://lore.kernel.org/r/20220610070543.59338-1-wangxiang@cdjrlc.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> |
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Alejandro Tafalla
|
ce253b8573 |
arm64/sysreg: Fix typo in Enum element regex
In the awk script, there was a typo with the comparison operator when
checking if the matched pattern is inside an Enum block.
This prevented the generation of the whole sysreg-defs.h header.
Fixes: 66847e0618d7 ("arm64: Add sysreg header generation scripting")
Signed-off-by: Alejandro Tafalla <atafalla@dnyon.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20220609204220.12112-1-atafalla@dnyon.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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Linus Torvalds
|
95fc76c81b |
powerpc fixes for 5.19 #2
- On 32-bit fix overread/overwrite of thread_struct via ptrace PEEK/POKE. - Fix softirqs not switching to the softirq stack since we moved irq_exit(). - Force thread size increase when KASAN is enabled to avoid stack overflows. - On Book3s 64 mark more code as not to be instrumented by KASAN to avoid crashes. - Exempt __get_wchan() from KASAN checking, as it's inherently racy. - Fix a recently introduced crash in the papr_scm driver in some configurations. - Remove include of <generated/compile.h> which is forbidden. Thanks to: Ariel Miculas, Chen Jingwen, Christophe Leroy, Erhard Furtner, He Ying, Kees Cook, Masahiro Yamada, Nageswara R Sastry, Paul Mackerras, Sachin Sant, Vaibhav Jain, Wanming Hu. -----BEGIN PGP SIGNATURE----- iQJHBAABCAAxFiEEJFGtCPCthwEv2Y/bUevqPMjhpYAFAmKiBo8THG1wZUBlbGxl cm1hbi5pZC5hdQAKCRBR6+o8yOGlgKnND/9wmr3nlA9gaXYCFyfnH5m8u/x7gNFs yW150WbcF/9FkhGwGED1kozyCrKqNt9UmBdyEqDjdtHE3ydW3dRnNaBG1wqLzlJd BpRUfe8VW5hR7aWkX7Vqzx7bnZACb2bxXv1upYDSeWDF0Bk7szdW2y2ucvRhx8Vv 8hxDsqIo+AsJV9oP6WSkIMFst0GDVBhbnd70zgu/4j9AYgWlfyJoFRw3vwUMWzS9 sW6niAZd9PsFboJkBj0LYxPQ6nHXUFEQp5OIn/ZPHmzHW4rnuYao8qgfzWSfxvA1 LcKLLtvobR9t0jK7SEh7efyOoIY3iprPNtP00jXdvtKMI8gv9bxCNyZBKap1TgQN TDexS6ShwcoHTMV6HyR4zA6OqFCn/stsuUNIrywPUvsEBgUPjRLiA2Nzk8wbEGG2 DXIBqYaNHIr34bRxjQ7K6JzovCGF/VOoRiJqwaAEujz4R164fuw7td/yuflLjL0Q JtT9DHXdzskzi+JWxHhsK3sLSHY5BInxt5GNNVsbecgpeizGFjwpGsxhWFOZNrBG P8zy7FZ7EzZe1a3qYdFROwZY3kkR4Rtp207ZdgAoWjTrt62ACwyx5HheaxGx+0R1 LL8LbHPxoWXJyQomMR1zVIzNhivcPqlH+yGkVaZJJY971HxjaCxIbbrH7rNpOf+w 2l5lxjzq5WrCNQ== =Odes -----END PGP SIGNATURE----- Merge tag 'powerpc-5.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc fixes from Michael Ellerman: - On 32-bit fix overread/overwrite of thread_struct via ptrace PEEK/POKE. - Fix softirqs not switching to the softirq stack since we moved irq_exit(). - Force thread size increase when KASAN is enabled to avoid stack overflows. - On Book3s 64 mark more code as not to be instrumented by KASAN to avoid crashes. - Exempt __get_wchan() from KASAN checking, as it's inherently racy. - Fix a recently introduced crash in the papr_scm driver in some configurations. - Remove include of <generated/compile.h> which is forbidden. Thanks to Ariel Miculas, Chen Jingwen, Christophe Leroy, Erhard Furtner, He Ying, Kees Cook, Masahiro Yamada, Nageswara R Sastry, Paul Mackerras, Sachin Sant, Vaibhav Jain, and Wanming Hu. * tag 'powerpc-5.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc/32: Fix overread/overwrite of thread_struct via ptrace powerpc/book3e: get rid of #include <generated/compile.h> powerpc/kasan: Force thread size increase with KASAN powerpc/papr_scm: don't requests stats with '0' sized stats buffer powerpc: Don't select HAVE_IRQ_EXIT_ON_IRQ_STACK powerpc/kasan: Silence KASAN warnings in __get_wchan() powerpc/kasan: Mark more real-mode code as not to be instrumented |
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Linus Torvalds
|
825464e79d |
Networking fixes for 5.19-rc2, including fixes from bpf and netfilter.
Current release - regressions:
- eth: amt: fix possible null-ptr-deref in amt_rcv()
Previous releases - regressions:
- tcp: use alloc_large_system_hash() to allocate table_perturb
- af_unix: fix a data-race in unix_dgram_peer_wake_me()
- nfc: st21nfca: fix memory leaks in EVT_TRANSACTION handling
- eth: ixgbe: fix unexpected VLAN rx in promisc mode on VF
Previous releases - always broken:
- ipv6: fix signed integer overflow in __ip6_append_data
- netfilter:
- nat: really support inet nat without l3 address
- nf_tables: memleak flow rule from commit path
- bpf: fix calling global functions from BPF_PROG_TYPE_EXT programs
- openvswitch: fix misuse of the cached connection on tuple changes
- nfc: nfcmrvl: fix memory leak in nfcmrvl_play_deferred
- eth: altera: fix refcount leak in altera_tse_mdio_create
Misc:
- add Quentin Monnet to bpftool maintainers
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-5.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Including fixes from bpf and netfilter.
Current release - regressions:
- eth: amt: fix possible null-ptr-deref in amt_rcv()
Previous releases - regressions:
- tcp: use alloc_large_system_hash() to allocate table_perturb
- af_unix: fix a data-race in unix_dgram_peer_wake_me()
- nfc: st21nfca: fix memory leaks in EVT_TRANSACTION handling
- eth: ixgbe: fix unexpected VLAN rx in promisc mode on VF
Previous releases - always broken:
- ipv6: fix signed integer overflow in __ip6_append_data
- netfilter:
- nat: really support inet nat without l3 address
- nf_tables: memleak flow rule from commit path
- bpf: fix calling global functions from BPF_PROG_TYPE_EXT programs
- openvswitch: fix misuse of the cached connection on tuple changes
- nfc: nfcmrvl: fix memory leak in nfcmrvl_play_deferred
- eth: altera: fix refcount leak in altera_tse_mdio_create
Misc:
- add Quentin Monnet to bpftool maintainers"
* tag 'net-5.19-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (45 commits)
net: amd-xgbe: fix clang -Wformat warning
tcp: use alloc_large_system_hash() to allocate table_perturb
net: dsa: realtek: rtl8365mb: fix GMII caps for ports with internal PHY
net: dsa: mv88e6xxx: correctly report serdes link failure
net: dsa: mv88e6xxx: fix BMSR error to be consistent with others
net: dsa: mv88e6xxx: use BMSR_ANEGCOMPLETE bit for filling an_complete
net: altera: Fix refcount leak in altera_tse_mdio_create
net: openvswitch: fix misuse of the cached connection on tuple changes
net: ethernet: mtk_eth_soc: fix misuse of mem alloc interface netdev[napi]_alloc_frag
ip_gre: test csum_start instead of transport header
au1000_eth: stop using virt_to_bus()
ipv6: Fix signed integer overflow in l2tp_ip6_sendmsg
ipv6: Fix signed integer overflow in __ip6_append_data
nfc: nfcmrvl: Fix memory leak in nfcmrvl_play_deferred
nfc: st21nfca: fix incorrect sizing calculations in EVT_TRANSACTION
nfc: st21nfca: fix memory leaks in EVT_TRANSACTION handling
nfc: st21nfca: fix incorrect validating logic in EVT_TRANSACTION
net: ipv6: unexport __init-annotated seg6_hmac_init()
net: xfrm: unexport __init-annotated xfrm4_protocol_init()
net: mdio: unexport __init-annotated mdio_bus_init()
...
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Linus Torvalds
|
f0be87c42c |
gcc-12: disable '-Warray-bounds' universally for now
In commit 8b202ee21839 ("s390: disable -Warray-bounds") the s390 people
disabled the '-Warray-bounds' warning for gcc-12, because the new logic
in gcc would cause warnings for their use of the S390_lowcore macro,
which accesses absolute pointers.
It turns out gcc-12 has many other issues in this area, so this takes
that s390 warning disable logic, and turns it into a kernel build config
entry instead.
Part of the intent is that we can make this all much more targeted, and
use this conflig flag to disable it in only particular configurations
that cause problems, with the s390 case as an example:
select GCC12_NO_ARRAY_BOUNDS
and we could do that for other configuration cases that cause issues.
Or we could possibly use the CONFIG_CC_NO_ARRAY_BOUNDS thing in a more
targeted way, and disable the warning only for particular uses: again
the s390 case as an example:
KBUILD_CFLAGS_DECOMPRESSOR += $(if $(CONFIG_CC_NO_ARRAY_BOUNDS),-Wno-array-bounds)
but this ends up just doing it globally in the top-level Makefile, since
the current issues are spread fairly widely all over:
KBUILD_CFLAGS-$(CONFIG_CC_NO_ARRAY_BOUNDS) += -Wno-array-bounds
We'll try to limit this later, since the gcc-12 problems are rare enough
that *much* of the kernel can be built with it without disabling this
warning.
Cc: Kees Cook <keescook@chromium.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Michael Ellerman
|
8e12784444 |
powerpc/32: Fix overread/overwrite of thread_struct via ptrace
The ptrace PEEKUSR/POKEUSR (aka PEEKUSER/POKEUSER) API allows a process to read/write registers of another process. To get/set a register, the API takes an index into an imaginary address space called the "USER area", where the registers of the process are laid out in some fashion. The kernel then maps that index to a particular register in its own data structures and gets/sets the value. The API only allows a single machine-word to be read/written at a time. So 4 bytes on 32-bit kernels and 8 bytes on 64-bit kernels. The way floating point registers (FPRs) are addressed is somewhat complicated, because double precision float values are 64-bit even on 32-bit CPUs. That means on 32-bit kernels each FPR occupies two word-sized locations in the USER area. On 64-bit kernels each FPR occupies one word-sized location in the USER area. Internally the kernel stores the FPRs in an array of u64s, or if VSX is enabled, an array of pairs of u64s where one half of each pair stores the FPR. Which half of the pair stores the FPR depends on the kernel's endianness. To handle the different layouts of the FPRs depending on VSX/no-VSX and big/little endian, the TS_FPR() macro was introduced. Unfortunately the TS_FPR() macro does not take into account the fact that the addressing of each FPR differs between 32-bit and 64-bit kernels. It just takes the index into the "USER area" passed from userspace and indexes into the fp_state.fpr array. On 32-bit there are 64 indexes that address FPRs, but only 32 entries in the fp_state.fpr array, meaning the user can read/write 256 bytes past the end of the array. Because the fp_state sits in the middle of the thread_struct there are various fields than can be overwritten, including some pointers. As such it may be exploitable. It has also been observed to cause systems to hang or otherwise misbehave when using gdbserver, and is probably the root cause of this report which could not be easily reproduced: https://lore.kernel.org/linuxppc-dev/dc38afe9-6b78-f3f5-666b-986939e40fc6@keymile.com/ Rather than trying to make the TS_FPR() macro even more complicated to fix the bug, or add more macros, instead add a special-case for 32-bit kernels. This is more obvious and hopefully avoids a similar bug happening again in future. Note that because 32-bit kernels never have VSX enabled the code doesn't need to consider TS_FPRWIDTH/OFFSET at all. Add a BUILD_BUG_ON() to ensure that 32-bit && VSX is never enabled. Fixes: 87fec0514f61 ("powerpc: PTRACE_PEEKUSR/PTRACE_POKEUSER of FPR registers in little endian builds") Cc: stable@vger.kernel.org # v3.13+ Reported-by: Ariel Miculas <ariel.miculas@belden.com> Tested-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20220609133245.573565-1-mpe@ellerman.id.au |
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Mark Brown
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a3d52ac775 |
arm64/sme: Fix tests for 0b1111 value ID registers
For both ID_AA64SMFR0_EL1.I16I64 and ID_AA64SMFR0_EL1.I8I32 we check for
the presence of the feature by looking for a specific ID value of 0x4 but
should instead be checking for the value 0xf defined by the architecture.
This had no practical effect since we are looking for values >= our define
and the only valid values in the architecture are 0b0000 and 0b1111 so we
would detect things appropriately with the architecture as it stands even
with the incorrect defines.
Signed-off-by: Mark Brown <broonie@kernel.org>
Fixes: b4adc83b0770 ("arm64/sme: System register and exception syndrome definitions")
Link: https://lore.kernel.org/r/20220607165128.2833157-1-broonie@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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Linus Torvalds
|
34f4335c16 |
* Fix syzkaller NULL pointer dereference
* Fix TDP MMU performance issue with disabling dirty logging * Fix 5.14 regression with SVM TSC scaling * Fix indefinite stall on applying live patches * Fix unstable selftest * Fix memory leak from wrong copy-and-paste * Fix missed PV TLB flush when racing with emulation -----BEGIN PGP SIGNATURE----- iQFIBAABCAAyFiEE8TM4V0tmI4mGbHaCv/vSX3jHroMFAmKglysUHHBib256aW5p QHJlZGhhdC5jb20ACgkQv/vSX3jHroOJDAgArpPcAnJbeT2VQTQcp94e4tp9k1Sf gmUewajco4zFVB/sldE0fIporETkaX+FYYPiaNDdNgJ2lUw/HUJBN7KoFEYTZ37N Xx/qXiIXQYFw1bmxTnacLzIQtD3luMCzOs/6/Q7CAFZIBpUtUEjkMlQOBuxoKeG0 B0iLCTJSw0taWcN170aN8G6T+5+bdR3AJW1k2wkgfESfYF9NfJoTUHQj9WTMzM2R aBRuXvUI/rWKvQY3DfoRmgg9Ig/SirSC+abbKIs4H08vZIEUlPk3WOZSKpsN/Wzh 3XDnVRxgnaRLx6NI/ouI2UYJCmjPKbNcueGCf5IfUcHvngHjAEG/xxe4Qw== =zQ9u -----END PGP SIGNATURE----- Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm Pull KVM fixes from Paolo Bonzini: - syzkaller NULL pointer dereference - TDP MMU performance issue with disabling dirty logging - 5.14 regression with SVM TSC scaling - indefinite stall on applying live patches - unstable selftest - memory leak from wrong copy-and-paste - missed PV TLB flush when racing with emulation * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: x86: do not report a vCPU as preempted outside instruction boundaries KVM: x86: do not set st->preempted when going back to user space KVM: SVM: fix tsc scaling cache logic KVM: selftests: Make hyperv_clock selftest more stable KVM: x86/MMU: Zap non-leaf SPTEs when disabling dirty logging x86: drop bogus "cc" clobber from __try_cmpxchg_user_asm() KVM: x86/mmu: Check every prev_roots in __kvm_mmu_free_obsolete_roots() entry/kvm: Exit to user mode when TIF_NOTIFY_SIGNAL is set KVM: Don't null dereference ops->destroy |
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Paolo Bonzini
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6cd88243c7 |
KVM: x86: do not report a vCPU as preempted outside instruction boundaries
If a vCPU is outside guest mode and is scheduled out, it might be in the process of making a memory access. A problem occurs if another vCPU uses the PV TLB flush feature during the period when the vCPU is scheduled out, and a virtual address has already been translated but has not yet been accessed, because this is equivalent to using a stale TLB entry. To avoid this, only report a vCPU as preempted if sure that the guest is at an instruction boundary. A rescheduling request will be delivered to the host physical CPU as an external interrupt, so for simplicity consider any vmexit *not* instruction boundary except for external interrupts. It would in principle be okay to report the vCPU as preempted also if it is sleeping in kvm_vcpu_block(): a TLB flush IPI will incur the vmentry/vmexit overhead unnecessarily, and optimistic spinning is also unlikely to succeed. However, leave it for later because right now kvm_vcpu_check_block() is doing memory accesses. Even though the TLB flush issue only applies to virtual memory address, it's very much preferrable to be conservative. Reported-by: Jann Horn <jannh@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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Paolo Bonzini
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54aa83c901 |
KVM: x86: do not set st->preempted when going back to user space
Similar to the Xen path, only change the vCPU's reported state if the vCPU was actually preempted. The reason for KVM's behavior is that for example optimistic spinning might not be a good idea if the guest is doing repeated exits to userspace; however, it is confusing and unlikely to make a difference, because well-tuned guests will hardly ever exit KVM_RUN in the first place. Suggested-by: Sean Christopherson <seanjc@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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Jason A. Donenfeld
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5c95fe8b02 |
LoongArch: Remove MIPS comment about cycle counter
This comment block was taken originally from the MIPS architecture code,
where indeed there are particular assumptions one can make regarding SMP
and !SMP and cycle counters. On LoongArch, however, the rdtime family of
functions is always available. As Xuerui wrote:
The rdtime family of instructions is in fact guaranteed to be
available on LoongArch; LoongArch's subsets all contain them, even
the 32-bit "Primary" subset intended for university teaching -- they
provide the rdtimeh.w and rdtimel.w pair of instructions that access
the same 64-bit counter.
So this commit simply removes the incorrect comment block.
Link: https://lore.kernel.org/lkml/e78940bc-9be2-2fe7-026f-9e64a1416c9f@xen0n.name/
Fixes: b738c106f735 ("LoongArch: Add other common headers")
Reviewed-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
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Huacai Chen
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0626e1c9f3 |
LoongArch: Fix copy_thread() build errors
Commit c5febea0956fd387 ("fork: Pass struct kernel_clone_args into
copy_thread") change the prototype of copy_thread(), while commit
5bd2e97c868a8a44 ("fork: Generalize PF_IO_WORKER handling") change
the structure of kernel_clone_args. They cause build errors, so fix it.
Fixes: 5bd2e97c868a8a44 ("fork: Generalize PF_IO_WORKER handling")
Fixes: c5febea0956fd387 ("fork: Pass struct kernel_clone_args into copy_thread")
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
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Huacai Chen
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255b4658c8 |
LoongArch: Fix the !CONFIG_SMP build
1, We assume arch/loongarch/include/asm/smp.h be included in include/ linux/smp.h is valid and the reverse inclusion isn't. So remove the <linux/smp.h> in arch/loongarch/include/asm/smp.h. 2, arch/loongarch/include/asm/smp.h is only needed when CONFIG_SMP, and setup.c include it only because it need plat_smp_setup(). So, reorganize setup.c & smp.h, and then remove <asm/smp.h> in setup.c. 3, Fix cacheinfo.c and percpu.h build error by adding the missing header files when !CONFIG_SMP. 4, Fix acpi.c build error by adding CONFIG_SMP guards. 5, Move irq_stat definition from smp.c to irq.c and fix its declaration. 6, Select CONFIG_SMP for CONFIG_NUMA, similar as other architectures do. Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> |
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Eric Dumazet
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10f3b29c65 |
bpf, arm64: Clear prog->jited_len along prog->jited
syzbot reported an illegal copy_to_user() attempt
from bpf_prog_get_info_by_fd() [1]
There was no repro yet on this bug, but I think
that commit 0aef499f3172 ("mm/usercopy: Detect vmalloc overruns")
is exposing a prior bug in bpf arm64.
bpf_prog_get_info_by_fd() looks at prog->jited_len
to determine if the JIT image can be copied out to user space.
My theory is that syzbot managed to get a prog where prog->jited_len
has been set to 43, while prog->bpf_func has ben cleared.
It is not clear why copy_to_user(uinsns, NULL, ulen) is triggering
this particular warning.
I thought find_vma_area(NULL) would not find a vm_struct.
As we do not hold vmap_area_lock spinlock, it might be possible
that the found vm_struct was garbage.
[1]
usercopy: Kernel memory exposure attempt detected from vmalloc (offset 792633534417210172, size 43)!
kernel BUG at mm/usercopy.c:101!
Internal error: Oops - BUG: 0 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 25002 Comm: syz-executor.1 Not tainted 5.18.0-syzkaller-10139-g8291eaafed36 #0
Hardware name: linux,dummy-virt (DT)
pstate: 60400009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : usercopy_abort+0x90/0x94 mm/usercopy.c:101
lr : usercopy_abort+0x90/0x94 mm/usercopy.c:89
sp : ffff80000b773a20
x29: ffff80000b773a30 x28: faff80000b745000 x27: ffff80000b773b48
x26: 0000000000000000 x25: 000000000000002b x24: 0000000000000000
x23: 00000000000000e0 x22: ffff80000b75db67 x21: 0000000000000001
x20: 000000000000002b x19: ffff80000b75db3c x18: 00000000fffffffd
x17: 2820636f6c6c616d x16: 76206d6f72662064 x15: 6574636574656420
x14: 74706d6574746120 x13: 2129333420657a69 x12: 73202c3237313031
x11: 3237313434333533 x10: 3336323937207465 x9 : 657275736f707865
x8 : ffff80000a30c550 x7 : ffff80000b773830 x6 : ffff80000b773830
x5 : 0000000000000000 x4 : ffff00007fbbaa10 x3 : 0000000000000000
x2 : 0000000000000000 x1 : f7ff000028fc0000 x0 : 0000000000000064
Call trace:
usercopy_abort+0x90/0x94 mm/usercopy.c:89
check_heap_object mm/usercopy.c:186 [inline]
__check_object_size mm/usercopy.c:252 [inline]
__check_object_size+0x198/0x36c mm/usercopy.c:214
check_object_size include/linux/thread_info.h:199 [inline]
check_copy_size include/linux/thread_info.h:235 [inline]
copy_to_user include/linux/uaccess.h:159 [inline]
bpf_prog_get_info_by_fd.isra.0+0xf14/0xfdc kernel/bpf/syscall.c:3993
bpf_obj_get_info_by_fd+0x12c/0x510 kernel/bpf/syscall.c:4253
__sys_bpf+0x900/0x2150 kernel/bpf/syscall.c:4956
__do_sys_bpf kernel/bpf/syscall.c:5021 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5019 [inline]
__arm64_sys_bpf+0x28/0x40 kernel/bpf/syscall.c:5019
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x48/0x114 arch/arm64/kernel/syscall.c:52
el0_svc_common.constprop.0+0x44/0xec arch/arm64/kernel/syscall.c:142
do_el0_svc+0xa0/0xc0 arch/arm64/kernel/syscall.c:206
el0_svc+0x44/0xb0 arch/arm64/kernel/entry-common.c:624
el0t_64_sync_handler+0x1ac/0x1b0 arch/arm64/kernel/entry-common.c:642
el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:581
Code: aa0003e3 d00038c0 91248000 97fff65f (d4210000)
Fixes: db496944fdaa ("bpf: arm64: add JIT support for multi-function programs")
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20220531215113.1100754-1-eric.dumazet@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Maxim Levitsky
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11d39e8cc4 |
KVM: SVM: fix tsc scaling cache logic
SVM uses a per-cpu variable to cache the current value of the
tsc scaling multiplier msr on each cpu.
Commit 1ab9287add5e2
("KVM: X86: Add vendor callbacks for writing the TSC multiplier")
broke this caching logic.
Refactor the code so that all TSC scaling multiplier writes go through
a single function which checks and updates the cache.
This fixes the following scenario:
1. A CPU runs a guest with some tsc scaling ratio.
2. New guest with different tsc scaling ratio starts on this CPU
and terminates almost immediately.
This ensures that the short running guest had set the tsc scaling ratio just
once when it was set via KVM_SET_TSC_KHZ. Due to the bug,
the per-cpu cache is not updated.
3. The original guest continues to run, it doesn't restore the msr
value back to its own value, because the cache matches,
and thus continues to run with a wrong tsc scaling ratio.
Fixes: 1ab9287add5e2 ("KVM: X86: Add vendor callbacks for writing the TSC multiplier")
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Message-Id: <20220606181149.103072-1-mlevitsk@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Ben Gardon
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5ba7c4c6d1 |
KVM: x86/MMU: Zap non-leaf SPTEs when disabling dirty logging
Currently disabling dirty logging with the TDP MMU is extremely slow. On a 96 vCPU / 96G VM backed with gigabyte pages, it takes ~200 seconds to disable dirty logging with the TDP MMU, as opposed to ~4 seconds with the shadow MMU. When disabling dirty logging, zap non-leaf parent entries to allow replacement with huge pages instead of recursing and zapping all of the child, leaf entries. This reduces the number of TLB flushes required. and reduces the disable dirty log time with the TDP MMU to ~3 seconds. Opportunistically add a WARN() to catch GFNs that are mapped at a higher level than their max level. Signed-off-by: Ben Gardon <bgardon@google.com> Message-Id: <20220525230904.1584480-1-bgardon@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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Jan Beulich
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1df931d95f |
x86: drop bogus "cc" clobber from __try_cmpxchg_user_asm()
As noted (and fixed) a couple of times in the past, "=@cc<cond>" outputs
and clobbering of "cc" don't work well together. The compiler appears to
mean to reject such, but doesn't - in its upstream form - quite manage
to yet for "cc". Furthermore two similar macros don't clobber "cc", and
clobbering "cc" is pointless in asm()-s for x86 anyway - the compiler
always assumes status flags to be clobbered there.
Fixes: 989b5db215a2 ("x86/uaccess: Implement macros for CMPXCHG on user addresses")
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Message-Id: <485c0c0b-a3a7-0b7c-5264-7d00c01de032@suse.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Shaoqin Huang
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cf4a8693d9 |
KVM: x86/mmu: Check every prev_roots in __kvm_mmu_free_obsolete_roots()
When freeing obsolete previous roots, check prev_roots as intended, not
the current root.
Signed-off-by: Shaoqin Huang <shaoqin.huang@intel.com>
Fixes: 527d5cd7eece ("KVM: x86/mmu: Zap only obsolete roots if a root shadow page is zapped")
Message-Id: <20220607005905.2933378-1-shaoqin.huang@intel.com>
Cc: stable@vger.kernel.org
Reviewed-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Juergen Gross
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fa1f57421e |
xen/virtio: Enable restricted memory access using Xen grant mappings
In order to support virtio in Xen guests add a config option XEN_VIRTIO enabling the user to specify whether in all Xen guests virtio should be able to access memory via Xen grant mappings only on the host side. Also set PLATFORM_VIRTIO_RESTRICTED_MEM_ACCESS feature from the guest initialization code on Arm and x86 if CONFIG_XEN_VIRTIO is enabled. Signed-off-by: Juergen Gross <jgross@suse.com> Signed-off-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com> Reviewed-by: Stefano Stabellini <sstabellini@kernel.org> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Link: https://lore.kernel.org/r/1654197833-25362-5-git-send-email-olekstysh@gmail.com Signed-off-by: Juergen Gross <jgross@suse.com> |
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Oleksandr Tyshchenko
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9bf22421dc |
arm/xen: Introduce xen_setup_dma_ops()
This patch introduces new helper and places it in new header. The helper's purpose is to assign any Xen specific DMA ops in a single place. For now, we deal with xen-swiotlb DMA ops only. The one of the subsequent commits in current series will add xen-grant DMA ops case. Also re-use the xen_swiotlb_detect() check on Arm32. Signed-off-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com> Reviewed-by: Stefano Stabellini <sstabellini@kernel.org> [For arm64] Acked-by: Catalin Marinas <catalin.marinas@arm.com> Link: https://lore.kernel.org/r/1654197833-25362-2-git-send-email-olekstysh@gmail.com Signed-off-by: Juergen Gross <jgross@suse.com> |
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Juergen Gross
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3f9dfbebdc |
virtio: replace arch_has_restricted_virtio_memory_access()
Instead of using arch_has_restricted_virtio_memory_access() together with CONFIG_ARCH_HAS_RESTRICTED_VIRTIO_MEMORY_ACCESS, replace those with platform_has() and a new platform feature PLATFORM_VIRTIO_RESTRICTED_MEM_ACCESS. Signed-off-by: Juergen Gross <jgross@suse.com> Reviewed-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com> Tested-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com> # Arm64 only Reviewed-by: Christoph Hellwig <hch@lst.de> Acked-by: Borislav Petkov <bp@suse.de> |
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Masahiro Yamada
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7ad4bd887d |
powerpc/book3e: get rid of #include <generated/compile.h>
You cannot include <generated/compile.h> here because it is generated
in init/Makefile but there is no guarantee that it happens before
arch/powerpc/mm/nohash/kaslr_booke.c is compiled for parallel builds.
The places where you can reliably include <generated/compile.h> are:
- init/ (because init/Makefile can specify the dependency)
- arch/*/boot/ (because it is compiled after vmlinux)
Commit f231e4333312 ("hexagon: get rid of #include <generated/compile.h>")
fixed the last breakage at that time, but powerpc re-added this.
<generated/compile.h> was unneeded because 'build_str' is almost the
same as 'linux_banner' defined in init/version.c
Let's copy the solution from MIPS.
(get_random_boot() in arch/mips/kernel/relocate.c)
Fixes: 6a38ea1d7b94 ("powerpc/fsl_booke/32: randomize the kernel image offset")
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Acked-by: Scott Wood <oss@buserror.net>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220604085050.4078927-1-masahiroy@kernel.org
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Linus Torvalds
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815b196c70 |
Hot fixes for 5.19-rc1.
- fixes for material merged during this merge window - cc:stable fixes for more longstanding issues - minor mailmap and MAINTAINERS updates -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCYpz1+QAKCRDdBJ7gKXxA jrudAP9EvjTg4KhmXDoUpgJYc2oPg27nIhu1LWT8VFdsVQ6mPwEA//HPvPhjah8u C1M183VxKL9trZf22DBn2BbD3kBDIAo= =9LgC -----END PGP SIGNATURE----- Merge tag 'mm-hotfixes-stable-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull mm hotfixes from Andrew Morton: "Fixups for various recently-added and longer-term issues and a few minor tweaks: - fixes for material merged during this merge window - cc:stable fixes for more longstanding issues - minor mailmap and MAINTAINERS updates" * tag 'mm-hotfixes-stable-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: mm/oom_kill.c: fix vm_oom_kill_table[] ifdeffery x86/kexec: fix memory leak of elf header buffer mm/memremap: fix missing call to untrack_pfn() in pagemap_range() mm: page_isolation: use compound_nr() correctly in isolate_single_pageblock() mm: hugetlb_vmemmap: fix CONFIG_HUGETLB_PAGE_FREE_VMEMMAP_DEFAULT_ON MAINTAINERS: add maintainer information for z3fold mailmap: update Josh Poimboeuf's email |
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Linus Torvalds
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d717180e7f |
A single fix for x86/SGX to prevent that memory which is allocated for an
SGX enclave is accounted to the wrong memory control group. -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAmKcd1MTHHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYoaalD/0TdNTH+LiM0BpEZ4VHIAFhE9mgfaU/ 1HIZcXEvAzPqS+iLMYAPo2dS7hNKv1GCCD8HcuOdEwC/CyTdrcpvhCNeQXCagF38 BHtzVCMFd/Y6U7ERNVsaHiuHFSkF+3QHef4Gzljzblgj1FK7s55z9tlQmE3pElOg UGfRoD32ODUtQPmOCjlOhFjsUUtFpdpXFCbjPPFdOqJ80LbdKR2s/0IBpHMk1xoz ESmS10tVC3a5np1/4Ge8vRCZnewOpulL/Is84Q8MbCvxI8NQh9pD7Imom/wRjSAS 19N+sWh7ywuUtAOVqJ23dDc6SOL3yjM4HbmsEYRGPsgzuJ5crezLcrKgCFeGmz/4 4zbU3R9hzzXQy8ZqNjbj71FKswfUDcMLb26GA/62d2N6zR7O0TSzfIrpIYp+GwJ3 5KaM0LiKoW/LXGfwEdEBWpCkK1OKgMXmZ5IQlr5bRz3Qihqzkk65Dgfo66XRt+jb DhMHW+cMfLwSX72QER6LyP2jPfUSCZgy5Pn8LfXUH30fc084gyrAPq2eqtVnf0lf Hq5/r1nMosPE0CtxHM1vNRj5M052nQxXhDhdsTcoO6PVBrvEjJbkanj3XbNRk66T FDWGWmdtDC2su6p0ezwbARMxYnsSS40GVsp/DoOu+SHxlAm9VkomY+QDJ2FuoJnb K0XfW5vV9MEsvw== =cuLD -----END PGP SIGNATURE----- Merge tag 'x86-urgent-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 SGX fix from Thomas Gleixner: "A single fix for x86/SGX to prevent that memory which is allocated for an SGX enclave is accounted to the wrong memory control group" * tag 'x86-urgent-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/sgx: Set active memcg prior to shmem allocation |
||
|
Linus Torvalds
|
0b7da15c21 |
Use PAGE_ALIGNED() instead of open coding it in the x86/mm code.
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||
|
Linus Torvalds
|
9784edd73a |
X86 microcode updates:
- Disable late microcode loading by default. Unless the HW people get
their act together and provide a required minimum version in the
microcode header for making a halfways informed decision its just
lottery and broken.
- Warn and taint the kernel when microcode is loaded late
- Remove the old unused microcode loader interface
- Remove a redundant perf callback from the microcode loader
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Merge tag 'x86-microcode-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 microcode updates from Thomas Gleixner:
- Disable late microcode loading by default. Unless the HW people get
their act together and provide a required minimum version in the
microcode header for making a halfways informed decision its just
lottery and broken.
- Warn and taint the kernel when microcode is loaded late
- Remove the old unused microcode loader interface
- Remove a redundant perf callback from the microcode loader
* tag 'x86-microcode-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/microcode: Remove unnecessary perf callback
x86/microcode: Taint and warn on late loading
x86/microcode: Default-disable late loading
x86/microcode: Rip out the OLD_INTERFACE
|
||
|
Linus Torvalds
|
a925128092 |
A set of small x86 cleanups:
- Remove unused headers in the IDT code
- Kconfig indendation and comment fixes
- Fix all 'the the' typos in one go instead of waiting for bots to fix
one at a time.
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Merge tag 'x86-cleanups-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cleanups from Thomas Gleixner:
"A set of small x86 cleanups:
- Remove unused headers in the IDT code
- Kconfig indendation and comment fixes
- Fix all 'the the' typos in one go instead of waiting for bots to
fix one at a time"
* tag 'x86-cleanups-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86: Fix all occurences of the "the the" typo
x86/idt: Remove unused headers
x86/Kconfig: Fix indentation of arch/x86/Kconfig.debug
x86/Kconfig: Fix indentation and add endif comments to arch/x86/Kconfig
|
||
|
Linus Torvalds
|
1fd9f4ce84 |
Use strlcpy() instead of strscpy() in arch_setup()
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||
|
Linus Torvalds
|
fa11c28046 |
Two small perf updates:
- Make the ICL event constraints match reality - Remove a unused local variable -----BEGIN PGP SIGNATURE----- iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAmKcc6gTHHRnbHhAbGlu dXRyb25peC5kZQAKCRCmGPVMDXSYoZA7EAC6zZqvX+yJn3c5C3rQDOyCJ74Zvawc IG3t35ADS7IbZm0rOjSdZz89V5Gz8bzMsjYHdADQw1URajuXvVwLkCFG5oY0owyo XSlAYBnMOYQ0nnZ/PqKO91oieyU0z3dkP5BHpFF0ZcqD4fSZaFvwtx2kneXDJBlw WIQqRYgRaKBRt+FTwmcm2ow3+afO9TY0oleOSbc0dokbGhwCO9hsuP0LwyMtA374 zGPzsHdHizvDUq+gEW5ZnmjAhrXqNnK6QOLZQukRlP4I6bnQlCkB9mtu/k6jEaAo xl4o0VvB0y4NoSNPBSvrIHF360nIsSMqIBV0TPv4lI1B+p4/Dr9cQTn3J+J43x+c SqpDs2JH22S6zhjgDPKt+hAyaKkPJan+E4dy33sbT8zlrwODGPcso6WdpdWQshQg WJU1HhHq6PU1vcKJEoQmagipFN70O3elufVsW5+qddJ3tmPM2ghET5Ib1E2+Odrk NICXW2aduogQL+9H62SOdXwRcuF6kUrO0J8I7l61eyGxr/XpOlg0vljgNgS7HxF8 IyrrfuNsj+p5SpVmg9LRwE9+vG5xi9lpGWoYmlp2RPTzOn0OfLtYI2rto70s6i6F xjvIaer1ulW4OP4cvHZd6VTVUl8ZE5lRM4VqdTFgzFpR7AuBMW+PVXcF5l4ubtZp x2NC+i0/3sQ7JQ== =ZK+2 -----END PGP SIGNATURE----- Merge tag 'perf-urgent-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf fixes from Thomas Gleixner: - Make the ICL event constraints match reality - Remove a unused local variable * tag 'perf-urgent-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/core: Remove unused local variable perf/x86/intel: Fix event constraints for ICL |
||
|
Linus Torvalds
|
5cc47d4a92 |
Trivial indentation fix in Kconfig
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||
|
Linus Torvalds
|
44688ffd11 |
A set of objtool fixes:
- Handle __ubsan_handle_builtin_unreachable() correctly and treat it as
noreturn.
- Allow architectures to select uaccess validation
- Use the non-instrumented bit test for test_cpu_has() to prevent escape
from non-instrumentable regions.
- Use arch_ prefixed atomics for JUMP_LABEL=n builds to prevent escape
from non-instrumentable regions.
- Mark a few tiny inline as __always_inline to prevent GCC from bringing
them out of line and instrumenting them.
- Mark the empty stub context_tracking_enabled() as always inline as GCC
brings them out of line and instruments the empty shell.
- Annotate ex_handler_msr_mce() as dead end
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Merge tag 'objtool-urgent-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool fixes from Thomas Gleixner:
- Handle __ubsan_handle_builtin_unreachable() correctly and treat it as
noreturn
- Allow architectures to select uaccess validation
- Use the non-instrumented bit test for test_cpu_has() to prevent
escape from non-instrumentable regions
- Use arch_ prefixed atomics for JUMP_LABEL=n builds to prevent escape
from non-instrumentable regions
- Mark a few tiny inline as __always_inline to prevent GCC from
bringing them out of line and instrumenting them
- Mark the empty stub context_tracking_enabled() as always inline as
GCC brings them out of line and instruments the empty shell
- Annotate ex_handler_msr_mce() as dead end
* tag 'objtool-urgent-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/extable: Annotate ex_handler_msr_mce() as a dead end
context_tracking: Always inline empty stubs
x86: Always inline on_thread_stack() and current_top_of_stack()
jump_label,noinstr: Avoid instrumentation for JUMP_LABEL=n builds
x86/cpu: Elide KCSAN for cpu_has() and friends
objtool: Mark __ubsan_handle_builtin_unreachable() as noreturn
objtool: Add CONFIG_HAVE_UACCESS_VALIDATION
|
||
|
Linus Torvalds
|
71e80720db |
Kbuild updates for v5.19 (2nd)
- Fix build regressions for parisc, csky, nios2, openrisc - Simplify module builds for CONFIG_LTO_CLANG and CONFIG_X86_KERNEL_IBT - Remove arch/parisc/nm, which was presumably a workaround for old tools - Check the odd combination of EXPORT_SYMBOL and 'static' precisely - Make external module builds robust against "too long argument error" - Support j, k keys for moving the cursor in nconfig -----BEGIN PGP SIGNATURE----- iQJJBAABCgAzFiEEbmPs18K1szRHjPqEPYsBB53g2wYFAmKbzrkVHG1hc2FoaXJv eUBrZXJuZWwub3JnAAoJED2LAQed4NsG4pEP/Ra691JLoNI8FdENI41mkv4gVBCP b3/7t/maaBpp9vEjoY3fSHwPTilBCFuSt50+QHvJDR2mckyFo6Vd4JLS7c3gfJkm JIyGodXYDE4RMQVZWjfjS2bTr7fnGOm9CxYgeJK4Js4dGeVhNN9OsWqmmoKKAtXt P9YL5jKTEPRO2IKdx38d3InJeufG6AsrbRe88H9XXy6gR6g49ZWKe8QB+VcNehm5 ZknWE+qLAmiXBGgsjwofOVU09wGuh8izf4/B+0S+HSvc1H3hdizYp+wVvBdwZ6co 3iqwh2fFZKMfL6n8pnmvf3Hl65SWMm40f9HmpScnErUUTUoEvHv53kvGp0d5m219 aRtbFF8HyVrvDmlR7GaaeiQja5Q1bT2ayjcmlVcNZ+gfvDId1nqqXO5SxBFn44hR e8KCOiGTOFswxV0vJLpUQrFuYkS8mvhm7NdaOZRYcvxnKHbN6ToKo6LS57j2Os5L bWFiNyk/oIUxN+9Lba0TqFbVuZazLBkNAjNsCalvosKIVXsZiFqOAdDytiUbCZmn vUvEe99Tr0ozRlAwZQtvLrL5Jdaxn9tv9ZDW8JRr3Xxku5wQN244+BOJBJV27wWw 0SkElgA979wJtMfwa/hm2WgSIxX6DESUaX6jzpi0hFNDLDUL25Kua8NeU/Z9UNrF 9tTys21exuDtjwy4 =BaLT -----END PGP SIGNATURE----- Merge tag 'kbuild-v5.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull more Kbuild updates from Masahiro Yamada: - Fix build regressions for parisc, csky, nios2, openrisc - Simplify module builds for CONFIG_LTO_CLANG and CONFIG_X86_KERNEL_IBT - Remove arch/parisc/nm, which was presumably a workaround for old tools - Check the odd combination of EXPORT_SYMBOL and 'static' precisely - Make external module builds robust against "too long argument error" - Support j, k keys for moving the cursor in nconfig * tag 'kbuild-v5.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (25 commits) kbuild: Allow to select bash in a modified environment scripts: kconfig: nconf: make nconfig accept jk keybindings modpost: use fnmatch() to simplify match() modpost: simplify mod->name allocation kbuild: factor out the common objtool arguments kbuild: move vmlinux.o link to scripts/Makefile.vmlinux_o kbuild: clean .tmp_* pattern by make clean kbuild: remove redundant cleanups in scripts/link-vmlinux.sh kbuild: rebuild multi-object modules when objtool is updated kbuild: add cmd_and_savecmd macro kbuild: make *.mod rule robust against too long argument error kbuild: make built-in.a rule robust against too long argument error kbuild: check static EXPORT_SYMBOL* by script instead of modpost parisc: remove arch/parisc/nm kbuild: do not create *.prelink.o for Clang LTO or IBT kbuild: replace $(linked-object) with CONFIG options kbuild: do not try to parse *.cmd files for objects provided by compiler kbuild: replace $(if A,A,B) with $(or A,B) in scripts/Makefile.modpost modpost: squash if...else-if in find_elf_symbol2() modpost: reuse ARRAY_SIZE() macro for section_mismatch() ... |
||
|
Linus Torvalds
|
cbd76edeab |
Cleanups (and one fix) around struct mount handling.
The fix is usermode_driver.c one - once you've done kern_mount(), you must kern_unmount(); simple mntput() will end up with a leak. Several failure exits in there messed up that way... In practice you won't hit those particular failure exits without fault injection, though. -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQQqUNBr3gm4hGXdBJlZ7Krx/gZQ6wUCYpvrWQAKCRBZ7Krx/gZQ 6z29AP9EZVSyIvnwXleehpa2mEZhsp+KAKgV/ENaKHMn7jiH0wD/bfgnhxIDNuc5 108E2R5RWEYTynW5k7nnP5PsTsMq5Qc= =b3Wc -----END PGP SIGNATURE----- Merge tag 'pull-18-rc1-work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull mount handling updates from Al Viro: "Cleanups (and one fix) around struct mount handling. The fix is usermode_driver.c one - once you've done kern_mount(), you must kern_unmount(); simple mntput() will end up with a leak. Several failure exits in there messed up that way... In practice you won't hit those particular failure exits without fault injection, though" * tag 'pull-18-rc1-work.mount' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: move mount-related externs from fs.h to mount.h blob_to_mnt(): kern_unmount() is needed to undo kern_mount() m->mnt_root->d_inode->i_sb is a weird way to spell m->mnt_sb... linux/mount.h: trim includes uninline may_mount() and don't opencode it in fspick(2)/fsopen(2) |
||
|
Linus Torvalds
|
d0e60d46bc |
Bitmap patches for 5.19-rc1
This series includes the following patchsets:
- bitmap: optimize bitmap_weight() usage(w/o bitmap_weight_cmp), from me;
- lib/bitmap.c make bitmap_print_bitmask_to_buf parseable, from Mauro
Carvalho Chehab;
- include/linux/find: Fix documentation, from Anna-Maria Behnsen;
- bitmap: fix conversion from/to fix-sized arrays, from me;
- bitmap: Fix return values to be unsigned, from Kees Cook.
It has been in linux-next for at least a week with no problems.
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Merge tag 'bitmap-for-5.19-rc1' of https://github.com/norov/linux
Pull bitmap updates from Yury Norov:
- bitmap: optimize bitmap_weight() usage, from me
- lib/bitmap.c make bitmap_print_bitmask_to_buf parseable, from Mauro
Carvalho Chehab
- include/linux/find: Fix documentation, from Anna-Maria Behnsen
- bitmap: fix conversion from/to fix-sized arrays, from me
- bitmap: Fix return values to be unsigned, from Kees Cook
It has been in linux-next for at least a week with no problems.
* tag 'bitmap-for-5.19-rc1' of https://github.com/norov/linux: (31 commits)
nodemask: Fix return values to be unsigned
bitmap: Fix return values to be unsigned
KVM: x86: hyper-v: replace bitmap_weight() with hweight64()
KVM: x86: hyper-v: fix type of valid_bank_mask
ia64: cleanup remove_siblinginfo()
drm/amd/pm: use bitmap_{from,to}_arr32 where appropriate
KVM: s390: replace bitmap_copy with bitmap_{from,to}_arr64 where appropriate
lib/bitmap: add test for bitmap_{from,to}_arr64
lib: add bitmap_{from,to}_arr64
lib/bitmap: extend comment for bitmap_(from,to)_arr32()
include/linux/find: Fix documentation
lib/bitmap.c make bitmap_print_bitmask_to_buf parseable
MAINTAINERS: add cpumask and nodemask files to BITMAP_API
arch/x86: replace nodes_weight with nodes_empty where appropriate
mm/vmstat: replace cpumask_weight with cpumask_empty where appropriate
clocksource: replace cpumask_weight with cpumask_empty in clocksource.c
genirq/affinity: replace cpumask_weight with cpumask_empty where appropriate
irq: mips: replace cpumask_weight with cpumask_empty where appropriate
drm/i915/pmu: replace cpumask_weight with cpumask_empty where appropriate
arch/x86: replace cpumask_weight with cpumask_empty where appropriate
...
|
||
|
Linus Torvalds
|
23df9ba64b |
parisc architecture fixes & updates for kernel v5.19-rc1
A fix to prevent crash at bootup if CONFIG_SCHED_MC is enabled, and add auto-detection of primary graphics card for framebuffer driver. -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQS86RI+GtKfB8BJu973ErUQojoPXwUCYptoPQAKCRD3ErUQojoP X1MbAQDP86+7VP8vVFDoEx+apgD/r9+53Gb0Ud6ZZ6MbrwIjEAD/Ys1V1X/AjWa7 ZkbBzRqPhHFRvx9sBUU537HaCem08Ak= =kBc2 -----END PGP SIGNATURE----- Merge tag 'for-5.19/parisc-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux Pull more parisc architecture updates from Helge Deller: "A fix to prevent crash at bootup if CONFIG_SCHED_MC is enabled, and add auto-detection of primary graphics card for framebuffer driver" * tag 'for-5.19/parisc-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: parisc/stifb: Keep track of hardware path of graphics card parisc/stifb: Implement fb_is_primary_device() parisc: fix a crash with multicore scheduler |
||
|
Linus Torvalds
|
4ccbe91de9 |
xen: branch for v5.19-rc1b
-----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQRTLbB6QfY48x44uB6AXGG7T9hjvgUCYprzPAAKCRCAXGG7T9hj vuTzAQC4GiDXcD/cfLVcEqdyw1diCWZjuOfuznUqy5ZUBAZjvAD/draFHTeO96+k qyZyzFggPIziaAOIUZ2DkJ/NqSAmbA8= =dl1E -----END PGP SIGNATURE----- Merge tag 'for-linus-5.19-rc1b-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip Pull more xen updates from Juergen Gross: "Two cleanup patches for Xen related code and (more important) an update of MAINTAINERS for Xen, as Boris Ostrovsky decided to step down" * tag 'for-linus-5.19-rc1b-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: xen: replace xen_remap() with memremap() MAINTAINERS: Update Xen maintainership xen: switch gnttab_end_foreign_access() to take a struct page pointer |
||
|
Helge Deller
|
cf936af790 |
parisc/stifb: Implement fb_is_primary_device()
Implement fb_is_primary_device() function, so that fbcon detects if this framebuffer belongs to the default graphics card which was used to start the system. Signed-off-by: Helge Deller <deller@gmx.de> Cc: stable@vger.kernel.org # v5.10+ |
||
|
Linus Torvalds
|
67850b7bdc |
While looking at the ptrace problems with PREEMPT_RT and the problems
of Peter Zijlstra was encountering with ptrace in his freezer rewrite
I identified some cleanups to ptrace_stop that make sense on their own
and move make resolving the other problems much simpler.
The biggest issue is the habbit of the ptrace code to change task->__state
from the tracer to suppress TASK_WAKEKILL from waking up the tracee. No
other code in the kernel does that and it is straight forward to update
signal_wake_up and friends to make that unnecessary.
Peter's task freezer sets frozen tasks to a new state TASK_FROZEN and
then it stores them by calling "wake_up_state(t, TASK_FROZEN)" relying
on the fact that all stopped states except the special stop states can
tolerate spurious wake up and recover their state.
The state of stopped and traced tasked is changed to be stored in
task->jobctl as well as in task->__state. This makes it possible for
the freezer to recover tasks in these special states, as well as
serving as a general cleanup. With a little more work in that
direction I believe TASK_STOPPED can learn to tolerate spurious wake
ups and become an ordinary stop state.
The TASK_TRACED state has to remain a special state as the registers for
a process are only reliably available when the process is stopped in
the scheduler. Fundamentally ptrace needs acess to the saved
register values of a task.
There are bunch of semi-random ptrace related cleanups that were found
while looking at these issues.
One cleanup that deserves to be called out is from commit 57b6de08b5f6
("ptrace: Admit ptrace_stop can generate spuriuos SIGTRAPs"). This
makes a change that is technically user space visible, in the handling
of what happens to a tracee when a tracer dies unexpectedly.
According to our testing and our understanding of userspace nothing
cares that spurious SIGTRAPs can be generated in that case.
The entire discussion can be found at:
https://lkml.kernel.org/r/87a6bv6dl6.fsf_-_@email.froward.int.ebiederm.org
Eric W. Biederman (11):
signal: Rename send_signal send_signal_locked
signal: Replace __group_send_sig_info with send_signal_locked
ptrace/um: Replace PT_DTRACE with TIF_SINGLESTEP
ptrace/xtensa: Replace PT_SINGLESTEP with TIF_SINGLESTEP
ptrace: Remove arch_ptrace_attach
signal: Use lockdep_assert_held instead of assert_spin_locked
ptrace: Reimplement PTRACE_KILL by always sending SIGKILL
ptrace: Document that wait_task_inactive can't fail
ptrace: Admit ptrace_stop can generate spuriuos SIGTRAPs
ptrace: Don't change __state
ptrace: Always take siglock in ptrace_resume
Peter Zijlstra (1):
sched,signal,ptrace: Rework TASK_TRACED, TASK_STOPPED state
arch/ia64/include/asm/ptrace.h | 4 --
arch/ia64/kernel/ptrace.c | 57 ----------------
arch/um/include/asm/thread_info.h | 2 +
arch/um/kernel/exec.c | 2 +-
arch/um/kernel/process.c | 2 +-
arch/um/kernel/ptrace.c | 8 +--
arch/um/kernel/signal.c | 4 +-
arch/x86/kernel/step.c | 3 +-
arch/xtensa/kernel/ptrace.c | 4 +-
arch/xtensa/kernel/signal.c | 4 +-
drivers/tty/tty_jobctrl.c | 4 +-
include/linux/ptrace.h | 7 --
include/linux/sched.h | 10 ++-
include/linux/sched/jobctl.h | 8 +++
include/linux/sched/signal.h | 20 ++++--
include/linux/signal.h | 3 +-
kernel/ptrace.c | 87 ++++++++---------------
kernel/sched/core.c | 5 +-
kernel/signal.c | 140 +++++++++++++++++---------------------
kernel/time/posix-cpu-timers.c | 6 +-
20 files changed, 140 insertions(+), 240 deletions(-)
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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Merge tag 'ptrace_stop-cleanup-for-v5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull ptrace_stop cleanups from Eric Biederman:
"While looking at the ptrace problems with PREEMPT_RT and the problems
Peter Zijlstra was encountering with ptrace in his freezer rewrite I
identified some cleanups to ptrace_stop that make sense on their own
and move make resolving the other problems much simpler.
The biggest issue is the habit of the ptrace code to change
task->__state from the tracer to suppress TASK_WAKEKILL from waking up
the tracee. No other code in the kernel does that and it is straight
forward to update signal_wake_up and friends to make that unnecessary.
Peter's task freezer sets frozen tasks to a new state TASK_FROZEN and
then it stores them by calling "wake_up_state(t, TASK_FROZEN)" relying
on the fact that all stopped states except the special stop states can
tolerate spurious wake up and recover their state.
The state of stopped and traced tasked is changed to be stored in
task->jobctl as well as in task->__state. This makes it possible for
the freezer to recover tasks in these special states, as well as
serving as a general cleanup. With a little more work in that
direction I believe TASK_STOPPED can learn to tolerate spurious wake
ups and become an ordinary stop state.
The TASK_TRACED state has to remain a special state as the registers
for a process are only reliably available when the process is stopped
in the scheduler. Fundamentally ptrace needs acess to the saved
register values of a task.
There are bunch of semi-random ptrace related cleanups that were found
while looking at these issues.
One cleanup that deserves to be called out is from commit 57b6de08b5f6
("ptrace: Admit ptrace_stop can generate spuriuos SIGTRAPs"). This
makes a change that is technically user space visible, in the handling
of what happens to a tracee when a tracer dies unexpectedly. According
to our testing and our understanding of userspace nothing cares that
spurious SIGTRAPs can be generated in that case"
* tag 'ptrace_stop-cleanup-for-v5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
sched,signal,ptrace: Rework TASK_TRACED, TASK_STOPPED state
ptrace: Always take siglock in ptrace_resume
ptrace: Don't change __state
ptrace: Admit ptrace_stop can generate spuriuos SIGTRAPs
ptrace: Document that wait_task_inactive can't fail
ptrace: Reimplement PTRACE_KILL by always sending SIGKILL
signal: Use lockdep_assert_held instead of assert_spin_locked
ptrace: Remove arch_ptrace_attach
ptrace/xtensa: Replace PT_SINGLESTEP with TIF_SINGLESTEP
ptrace/um: Replace PT_DTRACE with TIF_SINGLESTEP
signal: Replace __group_send_sig_info with send_signal_locked
signal: Rename send_signal send_signal_locked
|
||
|
Linus Torvalds
|
1ec6574a3c |
This set of changes updates init and user mode helper tasks to be
ordinary user mode tasks.
In commit 40966e316f86 ("kthread: Ensure struct kthread is present for
all kthreads") caused init and the user mode helper threads that call
kernel_execve to have struct kthread allocated for them. This struct
kthread going away during execve in turned made a use after free of
struct kthread possible.
The commit 343f4c49f243 ("kthread: Don't allocate kthread_struct for
init and umh") is enough to fix the use after free and is simple enough
to be backportable.
The rest of the changes pass struct kernel_clone_args to clean things
up and cause the code to make sense.
In making init and the user mode helpers tasks purely user mode tasks
I ran into two complications. The function task_tick_numa was
detecting tasks without an mm by testing for the presence of
PF_KTHREAD. The initramfs code in populate_initrd_image was using
flush_delayed_fput to ensuere the closing of all it's file descriptors
was complete, and flush_delayed_fput does not work in a userspace thread.
I have looked and looked and more complications and in my code review
I have not found any, and neither has anyone else with the code sitting
in linux-next.
Link: https://lkml.kernel.org/r/87mtfu4up3.fsf@email.froward.int.ebiederm.org
Eric W. Biederman (8):
kthread: Don't allocate kthread_struct for init and umh
fork: Pass struct kernel_clone_args into copy_thread
fork: Explicity test for idle tasks in copy_thread
fork: Generalize PF_IO_WORKER handling
init: Deal with the init process being a user mode process
fork: Explicitly set PF_KTHREAD
fork: Stop allowing kthreads to call execve
sched: Update task_tick_numa to ignore tasks without an mm
arch/alpha/kernel/process.c | 13 ++++++------
arch/arc/kernel/process.c | 13 ++++++------
arch/arm/kernel/process.c | 12 ++++++-----
arch/arm64/kernel/process.c | 12 ++++++-----
arch/csky/kernel/process.c | 15 ++++++-------
arch/h8300/kernel/process.c | 10 ++++-----
arch/hexagon/kernel/process.c | 12 ++++++-----
arch/ia64/kernel/process.c | 15 +++++++------
arch/m68k/kernel/process.c | 12 ++++++-----
arch/microblaze/kernel/process.c | 12 ++++++-----
arch/mips/kernel/process.c | 13 ++++++------
arch/nios2/kernel/process.c | 12 ++++++-----
arch/openrisc/kernel/process.c | 12 ++++++-----
arch/parisc/kernel/process.c | 18 +++++++++-------
arch/powerpc/kernel/process.c | 15 +++++++------
arch/riscv/kernel/process.c | 12 ++++++-----
arch/s390/kernel/process.c | 12 ++++++-----
arch/sh/kernel/process_32.c | 12 ++++++-----
arch/sparc/kernel/process_32.c | 12 ++++++-----
arch/sparc/kernel/process_64.c | 12 ++++++-----
arch/um/kernel/process.c | 15 +++++++------
arch/x86/include/asm/fpu/sched.h | 2 +-
arch/x86/include/asm/switch_to.h | 8 +++----
arch/x86/kernel/fpu/core.c | 4 ++--
arch/x86/kernel/process.c | 18 +++++++++-------
arch/xtensa/kernel/process.c | 17 ++++++++-------
fs/exec.c | 8 ++++---
include/linux/sched/task.h | 8 +++++--
init/initramfs.c | 2 ++
init/main.c | 2 +-
kernel/fork.c | 46 +++++++++++++++++++++++++++++++++-------
kernel/sched/fair.c | 2 +-
kernel/umh.c | 6 +++---
33 files changed, 234 insertions(+), 160 deletions(-)
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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Merge tag 'kthread-cleanups-for-v5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace
Pull kthread updates from Eric Biederman:
"This updates init and user mode helper tasks to be ordinary user mode
tasks.
Commit 40966e316f86 ("kthread: Ensure struct kthread is present for
all kthreads") caused init and the user mode helper threads that call
kernel_execve to have struct kthread allocated for them. This struct
kthread going away during execve in turned made a use after free of
struct kthread possible.
Here, commit 343f4c49f243 ("kthread: Don't allocate kthread_struct for
init and umh") is enough to fix the use after free and is simple
enough to be backportable.
The rest of the changes pass struct kernel_clone_args to clean things
up and cause the code to make sense.
In making init and the user mode helpers tasks purely user mode tasks
I ran into two complications. The function task_tick_numa was
detecting tasks without an mm by testing for the presence of
PF_KTHREAD. The initramfs code in populate_initrd_image was using
flush_delayed_fput to ensuere the closing of all it's file descriptors
was complete, and flush_delayed_fput does not work in a userspace
thread.
I have looked and looked and more complications and in my code review
I have not found any, and neither has anyone else with the code
sitting in linux-next"
* tag 'kthread-cleanups-for-v5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
sched: Update task_tick_numa to ignore tasks without an mm
fork: Stop allowing kthreads to call execve
fork: Explicitly set PF_KTHREAD
init: Deal with the init process being a user mode process
fork: Generalize PF_IO_WORKER handling
fork: Explicity test for idle tasks in copy_thread
fork: Pass struct kernel_clone_args into copy_thread
kthread: Don't allocate kthread_struct for init and umh
|
||
|
Linus Torvalds
|
4e583ff9df |
This pull request contains the following changes for UML:
- Various cleanups and fixes: xterm, serial line, time travel - Set ARCH_HAS_GCOV_PROFILE_ALL -----BEGIN PGP SIGNATURE----- iQJKBAABCAA0FiEEdgfidid8lnn52cLTZvlZhesYu8EFAmKZz4UWHHJpY2hhcmRA c2lnbWEtc3Rhci5hdAAKCRBm+VmF6xi7wRrZD/951tWxCjNiSZYL8B32YnaxqJLf vwDwXWxYbXmtLgVhqTGCQ61qNFhKnGVeyfO2niacB5EB3VFzxtB2dXTswDpcu/93 o99/Dozisehcn9L3CbGO0sKCxKZbdgP4TQPOGQpr8lyzv9NlmNF/bgkiH8s8rIB/ ACaiKmLrAVIyQz/8VElFqJNyB/RkmcILks//jVidFlueZhmYMSzbfdVDFyTDDJMA JEmIz+SG2hg15yCy620EpWgskHvSQSNhWMv4wxJVy4XRdZ7nztb9babV3lIaRmaI 8rBR+DsLGlDeep3SOv63giFzjMjHpXcAlJ0UoefkaRA4htSP4GmyDPHX6Fo6ilW4 fQ52lxsHmP+6fLmWNOnFjsvk93z9u3XU55ReEhP1PGzgAGDNUczy8BEYvb6l0Weq M8BdYgU2nh/SA0ycmXdSVbyl7nFST5s0lHr6hEt22CMxJ+jz6WS650vrnH2JimMX bnJMcEYX6PeyDq4lTYyrWOCdzPTorT6eEcn/BM3qKgWkosK0FlN+nnT0HOef5Bag jezo4/dt/VPfftKQS28Waufud/nnJD2oFAvFBG0/YHTooTZMkSnH2LnRbYkFo7vS xkDRnHJGSDOaxzdSfgNlwveqZ/qTgjNs1CUYHBrs2Tj1dJicqro+wWjZg8qzCHI+ 8YgCQjaEOYLN6CN0CA== =hD4o -----END PGP SIGNATURE----- Merge tag 'for-linus-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml Pull UML updates from Richard Weinberger: - Various cleanups and fixes: xterm, serial line, time travel - Set ARCH_HAS_GCOV_PROFILE_ALL * tag 'for-linus-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml: um: Fix out-of-bounds read in LDT setup um: chan_user: Fix winch_tramp() return value um: virtio_uml: Fix broken device handling in time-travel um: line: Use separate IRQs per line um: Enable ARCH_HAS_GCOV_PROFILE_ALL um: Use asm-generic/dma-mapping.h um: daemon: Make default socket configurable um: xterm: Make default terminal emulator configurable |
||
|
Linus Torvalds
|
9af13088ab |
ARM: multiplatform changes, part 3
This is the third and final bit of the multiplatform conversion for ARMv5, finishing off OMAP1. One patch enables the common-clk interface, and the other ones does the Kconfig change. These were waiting on a few dependencies to trickle in for common-clk, and the last one of those was in the USB tree. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEo6/YBQwIrVS28WGKmmx57+YAGNkFAmKaWBMACgkQmmx57+YA GNk3iA//ZnmE5IPwjfhfcc9mrZzB+/t0LaGvafnfjtQOsVzvOjT6Pnbg+TE8XlGO z9W289iwefsw38NCZKSsbCnPKu5w/J4kE0Jd4GAG+o1WBlxxrndpCPkOSH/GlB1j Gpm2oLjfqFO/5l4JGVxjYemO4fqvjOrt/HeyR/4+c0MQBtV/GU1zCk1Tmqdw3/fE R87Wja/PyPVos4RLzAcm0YbDHn8GYPJs4NNUw6joXxXV21T0MFXALuCz7/ziEZBF wBxr8hoQwK1hZURI0ivw9ENzUNQ2KrBRyJPPTybd5DKWWgYDGBFL8Pkdm/R7Gzt6 X5qHQLop7atgMqGIk7BiJFwP7s/31F0v5G1r76ZakppasUu0BHjjx/8OIQVcnjfT pX8VclM2ajUutaa580rzhCxB1pJCEsEQeHP/DdGD+1NZWRNe98s2bssCTFl7gWp6 41oGLWBPymV8J7R39p9SQSLwMQdCytRZF7ARpwjGhdwVSRYaT035OB3l4g5Sb5A7 TjgUvQyj7P6uXSmiqccQrNQ/YIgUM7eb4qiFfjBwzp7uDCJkSTC+wly3KIk0NFsE Q7ubaa5kt56mIGkMfcMJpuEUTDhTfwZYvB+d66/23hHteAduWzugTTktvRMD+3pH h+vTqw4HcxZtCV79l+9HKcgowlPumvHPtO47aNgUzR/oeLuxMow= =RGR6 -----END PGP SIGNATURE----- Merge tag 'arm-multiplatform-5.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc Pull yet more ARM multiplatform updates from Arnd Bergmann: "This is the third and final bit of the multiplatform conversion for ARMv5, finishing off OMAP1. One patch enables the common-clk interface, and the other ones does the Kconfig change. These were waiting on a few dependencies to trickle in for common-clk, and the last one of those was in the USB tree" * tag 'arm-multiplatform-5.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: ARM: omap1: enable multiplatform ARM: OMAP1: clock: Convert to CCF |
||
|
Linus Torvalds
|
c6f2f3e2c8 |
Add partial Loongarch architecture code
This is the majority of the loongarch architecture code, including
the final system call interface and all core functionality.
It still misses three sets of peripheral but vital patches to add
support for other subsystems, which have yet to pass review:
- The drivers/firmware/efi stub for booting from a standard UEFI
firmware implementation. Both the original custom boot interface
and a draft implementation of the EFI stub did not make it, so
it is currently impossible to boot the kernel, until the
loongarch specific portions get accepted into the UEFI subsystem
- The drivers/irqchip/irq-loongson-*.c drivers are shared with the
the MIPS port, but currently lack support for ACPI based booting,
which will get merged through the irqchip subsystem.
- Similarly, the drivers/pci/controller/pci-loongson.c needs to be
modified for ACPI support, which will be merged through the
PCI subsystem.
While the port cannot actually be used before all the above are
merged, having it in 5.19 helps to establish the user space ABI
for the libc ports to build on, and to help any treewide changes
in the mainline kernel get applied here as well. A gcc-12 based
tool chains for build testing is now included in
https://mirrors.edge.kernel.org/pub/tools/crosstool/.
Original description from Huacai Chen at
https://lore.kernel.org/lkml/20220603072053.35005-1-chenhuacai@loongson.cn/:
"LoongArch is a new RISC ISA, which is a bit like MIPS or RISC-V.
LoongArch includes a reduced 32-bit version (LA32R), a standard 32-bit
version (LA32S) and a 64-bit version (LA64). LoongArch use ACPI as its
boot protocol LoongArch-specific interrupt controllers (similar to APIC)
are already added in the next revision of ACPI Specification (current
revision is 6.4).
This patchset is adding basic LoongArch support in mainline kernel, we
can see a complete snapshot here:
https://github.com/loongson/linux/tree/loongarch-next
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson.git/log/?h=loongarch-next
Cross-compile tool chain to build kernel:
https://github.com/loongson/build-tools/releases/download/2021.12.21/loongarch64-clfs-2022-03-03-cross-tools-gcc-glibc.tar.xz
A CLFS-based Linux distro:
https://github.com/loongson/build-tools/releases/download/2021.12.21/loongarch64-clfs-system-2022-03-03.tar.bz2
Open-source tool chain which is under review (Binutils and Gcc are already upstream):
https://github.com/loongson/binutils-gdb/tree/upstream_v3.1
https://github.com/loongson/gcc/tree/loongarch_upstream_v6.3
https://github.com/loongson/glibc/tree/loongarch_2_35_dev_v2.2
Loongson and LoongArch documentations:
https://github.com/loongson/LoongArch-Documentation
LoongArch-specific interrupt controllers:
https://mantis.uefi.org/mantis/view.php?id=2203
https://mantis.uefi.org/mantis/view.php?id=2313"
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Merge tag 'loongarch-5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic
Pull initial Loongarch architecture code from Arnd Bergmann:
"This is the majority of the loongarch architecture code, including the
final system call interface and all core functionality.
It still misses three sets of peripheral but vital patches to add
support for other subsystems, which have yet to pass review:
- The drivers/firmware/efi stub for booting from a standard UEFI
firmware implementation. Both the original custom boot interface
and a draft implementation of the EFI stub did not make it, so it
is currently impossible to boot the kernel, until the loongarch
specific portions get accepted into the UEFI subsystem
- The drivers/irqchip/irq-loongson-*.c drivers are shared with the
the MIPS port, but currently lack support for ACPI based booting,
which will get merged through the irqchip subsystem.
- Similarly, the drivers/pci/controller/pci-loongson.c needs to be
modified for ACPI support, which will be merged through the PCI
subsystem.
While the port cannot actually be used before all the above are
merged, having it in 5.19 helps to establish the user space ABI for
the libc ports to build on, and to help any treewide changes in the
mainline kernel get applied here as well.
A gcc-12 based tool chains for build testing is now included in
https://mirrors.edge.kernel.org/pub/tools/crosstool/"
Original description from Huacai Chen:
"LoongArch is a new RISC ISA, which is a bit like MIPS or RISC-V.
LoongArch includes a reduced 32-bit version (LA32R), a standard 32-bit
version (LA32S) and a 64-bit version (LA64). LoongArch use ACPI as its
boot protocol LoongArch-specific interrupt controllers (similar to APIC)
are already added in the next revision of ACPI Specification (current
revision is 6.4).
This patchset is adding basic LoongArch support in mainline kernel, we
can see a complete snapshot here:
https://github.com/loongson/linux/tree/loongarch-next
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson.git/log/?h=loongarch-next
Cross-compile tool chain to build kernel:
https://github.com/loongson/build-tools/releases/download/2021.12.21/loongarch64-clfs-2022-03-03-cross-tools-gcc-glibc.tar.xz
A CLFS-based Linux distro:
https://github.com/loongson/build-tools/releases/download/2021.12.21/loongarch64-clfs-system-2022-03-03.tar.bz2
Open-source tool chain which is under review (Binutils and Gcc are already upstream):
https://github.com/loongson/binutils-gdb/tree/upstream_v3.1
https://github.com/loongson/gcc/tree/loongarch_upstream_v6.3
https://github.com/loongson/glibc/tree/loongarch_2_35_dev_v2.2
Loongson and LoongArch documentations:
https://github.com/loongson/LoongArch-Documentation
LoongArch-specific interrupt controllers:
https://mantis.uefi.org/mantis/view.php?id=2203
https://mantis.uefi.org/mantis/view.php?id=2313"
Link: https://lore.kernel.org/lkml/20220603072053.35005-1-chenhuacai@loongson.cn/
* tag 'loongarch-5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: (24 commits)
MAINTAINERS: Add maintainer information for LoongArch
LoongArch: Add Loongson-3 default config file
LoongArch: Add Non-Uniform Memory Access (NUMA) support
LoongArch: Add multi-processor (SMP) support
LoongArch: Add VDSO and VSYSCALL support
LoongArch: Add some library functions
LoongArch: Add misc common routines
LoongArch: Add ELF and module support
LoongArch: Add signal handling support
LoongArch: Add system call support
LoongArch: Add memory management
LoongArch: Add process management
LoongArch: Add exception/interrupt handling
LoongArch: Add boot and setup routines
LoongArch: Add other common headers
LoongArch: Add atomic/locking headers
LoongArch: Add CPU definition headers
LoongArch: Add build infrastructure
LoongArch: Add writecombine support for drm
LoongArch: Add ELF-related definitions
...
|
||
|
Linus Torvalds
|
21873bd66b |
arm64 fixes for 5.19-rc1:
- Initialise jump labels before setup_machine_fdt(), needed by commit
f5bda35fba61 ("random: use static branch for crng_ready()").
- Sparse warnings: missing prototype, incorrect __user annotation.
- Skip SVE kselftest if not sufficient vector lengths supported.
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
"Most of issues addressed were introduced during this merging window.
- Initialise jump labels before setup_machine_fdt(), needed by commit
f5bda35fba61 ("random: use static branch for crng_ready()").
- Sparse warnings: missing prototype, incorrect __user annotation.
- Skip SVE kselftest if not sufficient vector lengths supported"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
kselftest/arm64: signal: Skip SVE signal test if not enough VLs supported
arm64: Initialize jump labels before setup_machine_fdt()
arm64: hibernate: Fix syntax errors in comments
arm64: Remove the __user annotation for the restore_za_context() argument
ftrace/fgraph: fix increased missing-prototypes warnings
|