Commit Graph

1199806 Commits

Author SHA1 Message Date
Miaohe Lin
a2c15fece4 cgroup: fix obsolete function name above css_free_rwork_fn()
Since commit 8f36aaec9c ("cgroup: Use rcu_work instead of explicit rcu
and work item"), css_free_work_fn has been renamed to css_free_rwork_fn.
Update corresponding comment.

Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2023-08-02 09:37:59 -10:00
Cai Xinchen
05f76ae95e cgroup/cpuset: fix kernel-doc
Add kernel-doc of param @rotor to fix warnings:

kernel/cgroup/cpuset.c:4162: warning: Function parameter or member
'rotor' not described in 'cpuset_spread_node'
kernel/cgroup/cpuset.c:3771: warning: Function parameter or member
'work' not described in 'cpuset_hotplug_workfn'

Signed-off-by: Cai Xinchen <caixinchen1@huawei.com>
Acked-by: Waiman Long <longman@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2023-08-02 09:37:03 -10:00
Kamalesh Babulal
55a5956a55 cgroup: clean up printk()
Convert the only printk() to use pr_*() helper. No functional change.

Signed-off-by: Kamalesh Babulal <kamalesh.babulal@oracle.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2023-08-02 09:36:24 -10:00
Miaohe Lin
a3fdeeb3f1 cgroup: fix obsolete comment above cgroup_create()
Since commit 743210386c ("cgroup: use cgrp->kn->id as the cgroup ID"),
cgrp is associated with its kernfs_node. Update corresponding comment.

Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2023-07-21 09:54:48 -10:00
Xiongwei Song
ab8aebdc9f docs: cgroup-v1: fix typo
"listers" -> "listeners"

Signed-off-by: Xiongwei Song <xiongwei.song@windriver.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2023-07-21 08:11:41 -10:00
Xiongwei Song
fe9ebb8cec docs: cgroup-v1: correct the term of Page Cache organization in inode
The radix-tree for Page Cache has been replaced with xarray, see
commit eb797a8ee0 ("page cache: Rearrange address_space"), so move
"radix-tree" to "xarray".

Signed-off-by: Xiongwei Song <xiongwei.song@windriver.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2023-07-21 08:11:27 -10:00
Haitao Huang
714e08cc3e cgroup/misc: Store atomic64_t reads to u64
Change 'new_usage' type to u64 so it can be compared with unsigned 'max'
and 'capacity' properly even if the value crosses the signed boundary.

Signed-off-by: Haitao Huang <haitao.huang@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2023-07-21 08:10:06 -10:00
Haitao Huang
32bf85c60c cgroup/misc: Change counters to be explicit 64bit types
So the variables can account for resources of huge quantities even on
32-bit machines.

Signed-off-by: Haitao Huang <haitao.huang@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2023-07-18 12:10:00 -10:00
Kamalesh Babulal
62157e11d9 cgroup/misc: update struct members descriptions
Update the miscellaneous controller's structure member's description of
struct misc_res and struct misc_cg.

Signed-off-by: Kamalesh Babulal <kamalesh.babulal@oracle.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2023-07-18 12:03:29 -10:00
Kamalesh Babulal
c25ff4b911 cgroup: remove cgrp->kn check in css_populate_dir()
cgroup_create() creates cgrp and assigns the kernfs_node to cgrp->kn,
then cgroup_mkdir() populates base and csses cft file by calling
css_populate_dir() and cgroup_apply_control_enable() with a valid
cgrp->kn. Check for NULL cgrp->kn, will always be false, remove it.

Signed-off-by: Kamalesh Babulal <kamalesh.babulal@oracle.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2023-07-17 08:44:56 -10:00
Miaohe Lin
6f71780e7f cgroup: fix obsolete function name
cgroup_taskset_migrate() has been renamed to cgroup_migrate_execute() since
commit e595cd7069 ("cgroup: track migration context in cgroup_mgctx").
Update the corresponding comment.

Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2023-07-17 08:38:58 -10:00
Miaohe Lin
fcbb485d9f cgroup: use cached local variable parent in for loop
Use local variable parent to initialize iter tcgrp in for loop so the size
of cgroup.o can be reduced by 64 bytes. No functional change intended.

Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2023-07-17 08:34:41 -10:00
Miaohe Lin
ceddae22cd cgroup: remove obsolete comment above struct cgroupstats
There's no flag in the delay accounting structure indicates that the task
is waiting on IO since commit 1193829da1 ("delayacct: cleanup flags in
struct task_delay_info and functions use it"). So remove the comment.

Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2023-07-14 08:43:49 -10:00
Miaohe Lin
d1d4ff5d11 cgroup: put cgroup_tryget_css() inside CONFIG_CGROUP_SCHED
Put cgroup_tryget_css() inside CONFIG_CGROUP_SCHED to fix the warning
of 'cgroup_tryget_css' defined but not used [-Wunused-function] when
CONFIG_CGROUP_SCHED is disabled.

Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Kamalesh Babulal <kamalesh.babulal@oracle.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2023-07-11 11:46:00 -10:00
Waiman Long
3ae0b77321 cgroup/cpuset: Allow suppression of sched domain rebuild in update_cpumasks_hier()
A single partition setup and tear-down operation can lead to
multiple rebuild_sched_domains_locked() calls which is a waste of
effort. This can partly be mitigated by adding a flag to suppress the
rebuild_sched_domains_locked() call in update_cpumasks_hier(). Since
a Boolean flag has already been passed as the 3rd argument to
update_cpumasks_hier(), we can extend that to a full flag word.

The sched domain rebuild suppression is now enabled in
update_sibling_cpumasks() as all it callers will do the sched domain
rebuild after its return later on anyway.

Signed-off-by: Waiman Long <longman@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2023-07-10 11:01:23 -10:00
Waiman Long
99fe36ba6f cgroup/cpuset: Improve temporary cpumasks handling
The limitation that update_parent_subparts_cpumask() can only use
addmask & delmask in the given tmp cpumasks is fragile and may lead to
unexpected error.

Fix this problem by allocating/freeing a struct tmpmasks in
update_cpumask() to avoid reusing the cpumasks in trial_cs.

With this change, we can move the update_tasks_cpumask() for the
parent and update_sibling_cpumasks() for the sibling to inside
update_parent_subparts_cpumask().

Signed-off-by: Waiman Long <longman@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2023-07-10 11:01:03 -10:00
Waiman Long
a86ce68078 cgroup/cpuset: Extract out CS_CPU_EXCLUSIVE & CS_SCHED_LOAD_BALANCE handling
Extract out the setting of CS_CPU_EXCLUSIVE and CS_SCHED_LOAD_BALANCE
flags as well as the rebuilding of scheduling domains into the new
update_partition_exclusive() and update_partition_sd_lb() helper
functions to simplify the logic. The update_partition_exclusive()
helper is called mainly at the beginning of the caller, but it may be
called at the end too. The update_partition_sd_lb() helper is called
at the end of the caller.

This patch should reduce the chance that cpuset partition will end up
in an incorrect state.

Signed-off-by: Waiman Long <longman@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2023-07-10 11:00:12 -10:00
Waiman Long
c8c926200c cgroup/cpuset: Inherit parent's load balance state in v2
Since commit f28e22441f ("cgroup/cpuset: Add a new isolated
cpus.partition type"), the CS_SCHED_LOAD_BALANCE bit of a v2 cpuset
can be on or off. The child cpusets of a partition root must have the
same setting as its parent or it may screw up the rebuilding of sched
domains. Fix this problem by making sure the a child v2 cpuset will
follows its parent cpuset load balance state unless the child cpuset
is a new partition root itself.

Fixes: f28e22441f ("cgroup/cpuset: Add a new isolated cpus.partition type")
Signed-off-by: Waiman Long <longman@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2023-07-10 10:59:27 -10:00
Miaohe Lin
868f87b375 cgroup: fix obsolete comment above for_each_css()
cgroup_tree_mutex is removed since commit 8353da1f91 ("cgroup: remove
cgroup_tree_mutex"), update corresponding comment.

Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2023-07-10 10:47:25 -10:00
Michal Koutný
cd3c6f682d selftests: cgroup: Add cpuset migrations testcase
Add a separate testfile to verify treating permissions when tasks are
migrated on cgroup v2 hierarchy between cpuset cgroups.

In accordance with v2 design, migration should be allowed based on
delegation boundaries (i.e. cgroup.procs permissions) and does not
depend on the migrated object (i.e. unprivileged process can migrate
another process (even privileged) as long as it remains in the original
dedicated scope).

Signed-off-by: Michal Koutný <mkoutny@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2023-07-10 10:29:53 -10:00
Michal Koutný
12101424d7 selftests: cgroup: Minor code reorganizations
No functional change intended, these small changes are merged into one
commit and they serve as a preparation for an upcoming new testcase.

Signed-off-by: Michal Koutný <mkoutny@suse.com>
Reviewed-by: Waiman Long <longman@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2023-07-10 10:29:23 -10:00
Michal Koutný
0a67b847e1 cpuset: Allow setscheduler regardless of manipulated task
When we migrate a task between two cgroups, one of the checks is a
verification whether we can modify task's scheduler settings
(cap_task_setscheduler()).

An implicit migration occurs also when enabling a controller on the
unified hierarchy (think of parent to child migration). The
aforementioned check may be problematic if the caller of the migration
(enabling a controller) has no permissions over migrated tasks.
For instance, a user's cgroup that ends up running a process of a
different user. Although cgroup permissions are configured favorably,
the enablement fails due to the foreign process [1].

Change the behavior by relaxing the permissions check on the unified
hierarchy when no effective change would happen.
This is in accordance with unified hierarchy attachment behavior when
permissions of the source to target cgroups are decisive whereas the
migrated task is opaque (as opposed to more restrictive check in
__cgroup1_procs_write()).

Notice that foreign task's affinity may still be modified if the user
can modify destination cgroup's cpuset attributes
(update_tasks_cpumask() does no permissions check). The permissions
check could thus be skipped on v2 even when affinity changes. Stay
conservative in this patch though.

[1] https://github.com/systemd/systemd/issues/18293#issuecomment-831205649

Signed-off-by: Michal Koutný <mkoutny@suse.com>
Reviewed-by: Waiman Long <longman@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2023-07-10 10:28:43 -10:00
Miaohe Lin
48f074565b cgroup/cpuset: avoid unneeded cpuset_mutex re-lock
cpuset_mutex unlock and lock pair is only needed when transferring tasks
out of empty cpuset. Avoid unneeded cpuset_mutex re-lock when !is_empty
to save cpu cycles.

Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Waiman Long <longman@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2023-07-10 10:26:06 -10:00
Miaohe Lin
a453be9725 cgroup/cpuset: simplify the percpu kthreads check in update_tasks_cpumask()
kthread_is_per_cpu() can be called directly without checking whether
PF_KTHREAD is set in task->flags. So remove PF_KTHREAD check to make
code more concise.

Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Waiman Long <longman@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2023-07-10 10:24:56 -10:00
Miaohe Lin
1299eb2b0a cgroup: minor cleanup for cgroup_extra_stat_show()
Make it under CONFIG_CGROUP_SCHED to rid of __maybe_unused annotation.
And further fetch cgrp inside cgroup_extra_stat_show() directly to rid
of __maybe_unused annotation of cgrp. No functional change intended.

Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2023-07-10 10:23:41 -10:00
Miaohe Lin
2246ca53d7 cgroup: remove unneeded return value of cgroup_rm_cftypes_locked()
The return value of cgroup_rm_cftypes_locked() is always 0. So remove
it to simplify the code. No functional change intended.

Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Michal Koutný <mkoutny@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2023-07-10 09:39:22 -10:00
Linus Torvalds
3f01e9fed8 linux-watchdog 6.5-rc2 tag
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.14 (GNU/Linux)
 
 iEYEABECAAYFAmSr8RUACgkQ+iyteGJfRsremwCffkZtmWL4wAXFcryut+/db7ZK
 Sc8An0+My3hJvfshnn2iN6yYoKEAJNiC
 =xW/G
 -----END PGP SIGNATURE-----

Merge tag 'linux-watchdog-6.5-rc2' of git://www.linux-watchdog.org/linux-watchdog

Pull watchdog update from Wim Van Sebroeck:

 - Add Loongson-1 watchdog dt-bindings

* tag 'linux-watchdog-6.5-rc2' of git://www.linux-watchdog.org/linux-watchdog:
  dt-bindings: watchdog: Add Loongson-1 watchdog
2023-07-10 10:04:26 -07:00
Linus Torvalds
419caed6cc This push fixes a couple of regressions in af_alg and incorrect
return values in crypto/asymmetric_keys/public_key.
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEn51F/lCuNhUwmDeSxycdCkmxi6cFAmSpW4oACgkQxycdCkmx
 i6fmnA/9FdX6jk25C/ebCCsjlnZk3IP99LCv8ZA3Zuas6xT6C7e5FzmAx9qBAxcE
 U4CaOBp0FPf36ebrEPkhWY2xBGFxgU18K/DSFqt6Rtki8ihoBMC/zUfJCh/B4QMM
 h8uJ7LKRYmDXoWdE2v6rNRM8etRd8KDLj+x3GIq0ryvoA4tICUXA87MBnssfv2+L
 5phIfxtfRaZSbozdXxjXD+LYpDzKZSed5t+8+63v7W3Qu6LoJiapi/ZmpCnik8kg
 OxlLuUUuu0dLMZxeDRDfSjYCXYwdnkwluBBJtnOFHYYxOb1Vfbgi5iuL3d29HjPD
 CjUsIwxGYvzuCEDdvNE5QhfKidxjKAbLiIALzpwz4GIzXDVV7Hgljev8hD09gGP9
 T/FscVNgUmZtgaORCnTQRM3ZYUfVTEgP51SnRZ/Pg/KleTojzkMd5mEmUVBN0dfw
 ytLdAvr7FiEgu1a/BG4EacRrZx+9Gf/K9mqpAq2BGbeb6OrkX0dHSeEq6ftgK5zB
 ACVm1hERTu2y7rTwypIFtuZSjrL9G5nj91c9wAmVt2lOysssp/JLQly1wQHAII9/
 xsnSLO/VYt4uIlvGBPs6AxRcs+LbOcmOXK540BD1aPswtXRT42h2cH6LfCld5Nzo
 bT/5F2U4jCZTN+mNcfC+HUtnzjo2UeBu3jgndt6zs3a83UlqoIo=
 =oojR
 -----END PGP SIGNATURE-----

Merge tag 'v6.5-p2' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

Pull crypto fixes from Herbert Xu:
 "Fix a couple of regressions in af_alg and incorrect return values in
 crypto/asymmetric_keys/public_key"

* tag 'v6.5-p2' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: algif_hash - Fix race between MORE and non-MORE sends
  KEYS: asymmetric: Fix error codes
  crypto: af_alg - Fix merging of written data into spliced pages
2023-07-10 09:53:11 -07:00
Linus Torvalds
06c2afb862 Linux 6.5-rc1 2023-07-09 13:53:13 -07:00
Linus Torvalds
c192ac7357 MAINTAINERS 2: Electric Boogaloo
We just sorted the entries and fields last release, so just out of a
perverse sense of curiosity, I decided to see if we can keep things
ordered for even just one release.

The answer is "No. No we cannot".

I suggest that all kernel developers will need weekly training sessions,
involving a lot of Big Bird and Sesame Street.  And at the yearly
maintainer summit, we will all sing the alphabet song together.

I doubt I will keep doing this.  At some point "perverse sense of
curiosity" turns into just a cold dark place filled with sadness and
despair.

Repeats: 80e62bc848 ("MAINTAINERS: re-sort all entries and fields")
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2023-07-09 10:29:53 -07:00
Linus Torvalds
f71f64210d dma-mapping fixes for Linux 6.5
- swiotlb area sizing fixes (Petr Tesarik)
 -----BEGIN PGP SIGNATURE-----
 
 iQI/BAABCgApFiEEgdbnc3r/njty3Iq9D55TZVIEUYMFAmSq57sLHGhjaEBsc3Qu
 ZGUACgkQD55TZVIEUYOh0xAAkwklIxxzXvNlgjvy2hdgPWImPS8tGPDSIsqA9TDD
 WDZq89nz/ndnchdPObDvyJXmfBgqa0qCHqopBVPqMKv5a1pKZhrRXYlbajGQQwji
 MIqefTLZ/VGw7bDpEivOt+yadwQ3KxuxWWs7/JPKLLReSJ22H8P+jkrK7P7kBL5X
 YaMtZG9d86fvFHnQHKdAOlF1iCvnoZDHPcvaZbI6m5mMSZ+HIYqK5pP1MTUEAbIU
 MX4ZSI7/mL0q67+kZuM/NCSeq1pH0Cd0D2DGm+8k/y87G81GS6E5Wgg+xO7vYiXf
 5ChuwlAO9K9KhH7NIRkKhkad/Ii89ENXSyv5gmPRoKYK5FXajnHSlJTUrZojV6XC
 Pbsd9ATVzV0rY61EPyh6G1a+Ttp/pwMp+W0I2fi032GVAePQ/vhB9x9O+2O/3QiC
 v80nUSatkciZncWqkguhp3NONsRmLKep3CCQnEAA/gLs27B0avdQeslnqbOOUQKd
 Si+djIoel8ONjQ+mW8eFCsVYMH1xFSo0aGsgGe0y2cyBE3DN1AW9eRnOXWT4C1PR
 UyDlx8ACs87ojec+YRQFYk2/PbsU7CQiH1pteXvBHcbhiVUAvrtXtg6ANQ+7066P
 IIduAZmlHcHb1BhyrSQbAtRllVLIp/l9IAkCSY9SvL0tjh/B5CaRBD5m2Taow5I/
 KUI=
 =4Lfc
 -----END PGP SIGNATURE-----

Merge tag 'dma-mapping-6.5-2023-07-09' of git://git.infradead.org/users/hch/dma-mapping

Pull dma-mapping fixes from Christoph Hellwig:

 - swiotlb area sizing fixes (Petr Tesarik)

* tag 'dma-mapping-6.5-2023-07-09' of git://git.infradead.org/users/hch/dma-mapping:
  swiotlb: reduce the number of areas to match actual memory pool size
  swiotlb: always set the number of areas before allocating the pool
2023-07-09 10:24:22 -07:00
Linus Torvalds
a9943ad3dd - Optimize IRQ domain's name assignment
-----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmSqa70ACgkQEsHwGGHe
 VUrTlhAAtfvA+mCeWVwn42827YlJeMvFV6RedERSk8x5CO/IJgHx2YFB0UXlznuM
 xQSIC7pkY2He62ggb+s6m+Pb1M3bxxJDaRSRnQGHOqXuSNuzokqjwvVMaSBE9s5W
 fgvdbZ4CDEynW7awiDq1PaMcJFzbc6RMbBDspNDke2ikZgGvqqWl3Gx2DHhGyNfQ
 UFJHETejxhfheU7Y9c06P2ToTyzc0RcaPFQfFmYIse+c6iTcjnqr9NRHCIklSygN
 F3VjSEXC1MkAZIAuV9pjkl3z01xfvDe1WqxH3jID/vM97AY08DqmBQC31VZOBmmV
 shndEUpc2yi7ued0WU1XLf1sMyEHm5rgF/19gRhFR9sxu4Zm9+JxOofo0URwqtsV
 Z3d0CxpDrF0ATJs2zTstUmOG0AD6SBfC+BQZi3M6rohXgR0z04dBnyTgCnxAs60u
 d5byFza5nZ/sX7KZXgVlKfH5ej0AcZuyFM/qMKqiTqzz5C4dv0Hq7y718aaecxmz
 W9A3olDGhC48pr9250TthEMhBzRdXvKgKQBUhC2TY/0hUBHyvmHeU//ql54XYhgh
 XVx3qI7yieZC3d27hZN0WTCG6qSCJoq8LROmGDIbx16Uj/cm1AHzJTJ+5CbCOafZ
 41gPBoNCNYNXlgYNBXpVcPRtfcK98fGl3jpPOk0llaSa6IW+Lcc=
 =ATsc
 -----END PGP SIGNATURE-----

Merge tag 'irq_urgent_for_v6.5_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull irq update from Borislav Petkov:

 - Optimize IRQ domain's name assignment

* tag 'irq_urgent_for_v6.5_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqdomain: Use return value of strreplace()
2023-07-09 10:16:04 -07:00
Linus Torvalds
51e3d7c274 - Do FPU AP initialization on Xen PV too which got missed by the recent
boot reordering work
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmSqal4ACgkQEsHwGGHe
 VUr+pg/+JyqfzyymWYAaPUfwaFH7V8425p8thrZL+OSnDDoAZt5UnPpLB4lYZKWW
 u2SlphNSLhuclZ7Wly1zkkPO1J8O88FRCFFBxONtnrQ4WqH2P7f2E6cHgzD4dQRF
 RX/pNuLQ1TNYiOHvNvJ3xJvVdAGrcXFBbqupfSig+dQMBKIyuzGu/Jn7Cm0Q+HJK
 j9WJWiGNJ+f8WOEbHiTdI89OFcPmUMe2nhtK/I/QIUoCBIiyp3jQ2RilZwY2V7Wu
 U5kSQChqp7N+e275TLlOCFGvNW2htCZ5GPc2/nCOkfmnTDTwjVGX8jQr+EqC1pj1
 WcueoTjBMw2Drs4/V9ItkGXYqmUE4CK03nGp6uZ2hA5Qo8mSAdzr59A3+I7BbHur
 ulbm1i6ZZ0ip9Co080E0JS0F1CIL7ROIQ6HDQz4BUGQ1BbmIhNBmdj7yBJ20nTrr
 L7EmwgDsOF2NhKpg5USGrPxJWBvc9ma72CAlHAiPVUgzFIR6Z5DN9TM8aWgZZPDt
 RULC1/L/SI2FQmrMnCYhjO7Om0qJFk422cWCVjOA3D/lRo3toFEJ/XopxxXz9FZs
 guAIJuFLjDun13hxS9PCGvRCkg2cdVsCykkg1ydAbg2ux99rPDAmmnwYPG7pvxiP
 2W0gq43dbQAZlYjRx3gV5sHpUtPCsF+1Lz5jXkldRZJNXD1v1Fk=
 =RZFV
 -----END PGP SIGNATURE-----

Merge tag 'x86_urgent_for_v6.5_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fpu fix from Borislav Petkov:

 - Do FPU AP initialization on Xen PV too which got missed by the recent
   boot reordering work

* tag 'x86_urgent_for_v6.5_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/xen: Fix secondary processors' FPU initialization
2023-07-09 10:13:32 -07:00
Linus Torvalds
e3da8db055 A single fix for the mechanism to park CPUs with an INIT IPI.
On shutdown or kexec, the kernel tries to park the non-boot CPUs with an
 INIT IPI. But the same code path is also used by the crash utility. If the
 CPU which panics is not the boot CPU then it sends an INIT IPI to the boot
 CPU which resets the machine. Prevent this by validating that the CPU which
 runs the stop mechanism is the boot CPU. If not, leave the other CPUs in
 HLT.
 -----BEGIN PGP SIGNATURE-----
 
 iQJHBAABCgAxFiEEQp8+kY+LLUocC4bMphj1TA10mKEFAmSqoEcTHHRnbHhAbGlu
 dXRyb25peC5kZQAKCRCmGPVMDXSYoYNSEACwo5zgibek27qeMvJGfNztm0qRa4mw
 wN0qV31yaNcEfhqL8bMU8n3wvEA+pZBqhaU5fyalY+yxc29jI/j9eda5zR+Fi9e5
 kVyFT2M0rVSDLFraoQeD+T/tSSK2MJtswF12ytY5mHzHMCb6Uy9fNCpUiQlB+i81
 AcnlKQk9ifZXFdMJPj5E+E6l776T8NZPoYEdFgJloxaYOGTdFJDWDlryx4LD7Urz
 Fx/ec8Ug/FYSPl2XzXHugvHjNefxKoomcZ3v3CSZonBcav7Gz6F06HAR5vVRWSHx
 4Dlh6zdy+60YKBmkvpb+RJIBMo8aXclwT+tntaoJvGHZ+PNASO6JVz9PvmoNgfWK
 Oy2n1K687qIOY6d+yxUZgbZpwXX5bG6kc0xbicUNigGagrYTfd83G5RAfwxNkqsY
 23Qw4Ue8uxve4M8iM/FfxKIShuDBiLCIDDIrWDjEkvIAnr1pd+NPUv7kqOTI7Kz/
 srNgcOwalypzuS93lgaN1yjRv1mmaPXhdhjy0DwGbC54bKgNzfq+7z75Ibn0dSFF
 JUPFVjztB+ymnM6PJ1dR77SvPi+xOi60nw7L+Qu9US4yKkW0NeGiIWVsggNorbU6
 UPFSE5gxwFD0w1EZ9W+IDeOZUNhjJUINZsn8txm+tb+oEqTIGRPHPOo0C1dBmLW9
 AmDIeHljj0iWIw==
 =DOCF
 -----END PGP SIGNATURE-----

Merge tag 'x86-core-2023-07-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fix from Thomas Gleixner:
 "A single fix for the mechanism to park CPUs with an INIT IPI.

  On shutdown or kexec, the kernel tries to park the non-boot CPUs with
  an INIT IPI. But the same code path is also used by the crash utility.
  If the CPU which panics is not the boot CPU then it sends an INIT IPI
  to the boot CPU which resets the machine.

  Prevent this by validating that the CPU which runs the stop mechanism
  is the boot CPU. If not, leave the other CPUs in HLT"

* tag 'x86-core-2023-07-09' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/smp: Don't send INIT to boot CPU
2023-07-09 10:08:38 -07:00
Linus Torvalds
74099e2034 - fixes for KVM
- fix for loongson build and cpu probing
 - DT fixes
 -----BEGIN PGP SIGNATURE-----
 
 iQJOBAABCAA4FiEEbt46xwy6kEcDOXoUeZbBVTGwZHAFAmSqY18aHHRzYm9nZW5k
 QGFscGhhLmZyYW5rZW4uZGUACgkQeZbBVTGwZHBYrw//VbewcC/3lYDaS2SDGIs1
 2f6DGshl7WeY/Y3IBA5xJXZHoK7AgwmC4OtPw+Ge4ZatD4mdW2B2aulIzRcm9yJV
 8EXNBDs7LYiKb7vG7ImYS38eykm/9dQBeK0gDsKA0eVWIKXgCCuDS78INnYFUwUk
 ZOJ8y2UkDxCOjLzhND3cDVWZEL2ZNq3XzPhFRaCrdnJTV3GgQs6s1f1A5t3iszNx
 4JQ4OM3z+wFNZj1CcWxs/lvMfftaXX5Osyyt6Pgy0gSou7ZrdWGlgIu1QDu9agq5
 o1+hXGYDUlnWsmQoUa8OA4+jhQs/XQYwMLs/sbSH9/1iGVPYDiWuw/oDPlesx4/u
 LtIk85SIL2todeD94b4w2UJvQjuaUgl/WzTF1CfAziX2yjs1zaHQaWXblnNzINLS
 eUpqFDbfPD0yzwjyfC52lNGbSKqOtBLr83GGzPrpp0OZDEI3rjwigARYcLXfh8SR
 KAgWRfYsrTi1efREdyAUlgsyys0yyCVTW5IqpKb6paSrIUIMpF3QE1+fl0Y3XuNK
 YByUyxJVYwWhljBXrNlaVcqdxtz5eZqeVQf0kus7AeHOOzNx0mBRGd99oKIXMMU8
 6fg/rhxSjtEnUdEWQC7hhrnnbgW/CT6uP1EndshYZ/NntyEygJVNNzHnKTbJYQWk
 LDnAtQTlmMB7snCc1+ECjO8=
 =5EjT
 -----END PGP SIGNATURE-----

Merge tag 'mips_6.5_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux

Pull MIPS fixes from Thomas Bogendoerfer:

 - fixes for KVM

 - fix for loongson build and cpu probing

 - DT fixes

* tag 'mips_6.5_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
  MIPS: kvm: Fix build error with KVM_MIPS_DEBUG_COP0_COUNTERS enabled
  MIPS: dts: add missing space before {
  MIPS: Loongson: Fix build error when make modules_install
  MIPS: KVM: Fix NULL pointer dereference
  MIPS: Loongson: Fix cpu_probe_loongson() again
2023-07-09 10:02:49 -07:00
Linus Torvalds
76487845fd Minor cleanups for 6.5:
* Fix an uninitialized variable warning.
 
 Signed-off-by: Darrick J. Wong <djwong@kernel.org>
 -----BEGIN PGP SIGNATURE-----
 
 iHUEABYKAB0WIQQ2qTKExjcn+O1o2YRKO3ySh0YRpgUCZKjUjwAKCRBKO3ySh0YR
 pn92AQC4gY9GOyKcc/aiAd/t1u8gGxnFtcN06xh4TdVArMM4/AD/UtEKx9LYuaSF
 pyhw5SfzxI555HfXkA8ci/D+BxguVQs=
 =/vX1
 -----END PGP SIGNATURE-----

Merge tag 'xfs-6.5-merge-6' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux

Pull xfs fix from Darrick Wong:
 "Nothing exciting here, just getting rid of a gcc warning that I got
  tired of seeing when I turn on gcov"

* tag 'xfs-6.5-merge-6' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  xfs: fix uninit warning in xfs_growfs_data
2023-07-09 09:50:42 -07:00
Linus Torvalds
4770353b66 3 smb3 client fixes
-----BEGIN PGP SIGNATURE-----
 
 iQGzBAABCgAdFiEE6fsu8pdIjtWE/DpLiiy9cAdyT1EFAmSqNkIACgkQiiy9cAdy
 T1GXsAwAhYUyjlXZLDsmO+9PjKhM9WRM1IO5myy3P396R0Tzq741f8LM7Lx08qc+
 D1701gsnhIrvprem1HjtW6DZzCVnLdpBIYUEnwUr8eDqMpk1VFKug3xSVhIRMih3
 Y30dHTgQ0aCLrrh5XHOWhBHJbpq7Wdlh3q0oi8I36Of8e6tGFNo2wI4ud7no4aIj
 N222dWOs56FXtVAmgEAuc7U2A40ztMOp7FXrbzhK4FwD5kO+pFkqJcLjG6Bk10ph
 Tyg3Wh2TnX+MviOY0xUaN0X50dSoSJPkSUYGkccrIcfVPwEoH7l6j0LNgAVyhG7K
 f5EUbM7Td51a1Znj9wX6U9N0UfO/IOZRDFZ7ACckLBBBEzfKYCgYY5dWJ6aVxZHb
 bB336f1ObvDiocEabS1SMa//sXUjpOy3Tg8etLCYJpqjWYE8nO7lERoBWGWXkUqy
 xO86pGQjYLzkw16R11tzbplv+1HxoGwIuQnOubivv2prn++NZ4Zr2ohBeDlyJc1/
 WwF42UfM
 =F8D0
 -----END PGP SIGNATURE-----

Merge tag '6.5-rc-smb3-client-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6

Pull more smb client updates from Steve French:

 - fix potential use after free in unmount

 - minor cleanup

 - add worker to cleanup stale directory leases

* tag '6.5-rc-smb3-client-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: Add a laundromat thread for cached directories
  smb: client: remove redundant pointer 'server'
  cifs: fix session state transition to avoid use-after-free issue
2023-07-09 09:45:32 -07:00
Linus Torvalds
cff0687396 Fixes for pci_clean_master, error handling in driver inits, and various
other issues/bugs.
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEoE9b9c3U2JxX98mqbmZLrHqL0iMFAmSpuR8ACgkQbmZLrHqL
 0iOnrg/9FT/mEyLZXfI/sAZWyCKvydvbFL78Id9JVKxqQ00tlLlMtRFlLG7gtagn
 GrOf0HSM6RJxeWo8gqGjb1tM0L1qO/Bt9MlqZf7jIJTyL8DBUMz5sFdzqQ5TZo6j
 krKRjzjiNIyPlSUWGBBt2MIVUbJwfFu6f1dnpAVTWjyc2CNEYa5r3FvAqOTVYTMS
 IiNJyCaGwdPOXQVxOWwJnT4aPcWZzOMf4GYWX2hi8HczcEh1bHcBtHL6UGk5CiG9
 igj1e4Q3865lDp9eFIrQEtW2BSf1igzILpT3WmSxMXvufzILLAl6pOq/s/ziTEM2
 Hrg/JnU1W1Iozpyzd5A1lVIy5+NFN3AEHM3iBI0aZ5Qj1yBhNv4CJ/WLqPABBs+D
 cmuea+gOJjKKVGqdLNZ9+rDGtIV+SRQA+0GGoBhBXvVqH5C7qUxx5ZJMD26mC9lS
 L0dQTbgVyJc3Zv8/FHNGuKvp+xq+vgeZmt8zDViNPlmB9bjz3XikCE7D0lr74coD
 Vvmn4dUo65EqvWfKqLR8fXDZ9pdaTqF19xddNPiZS4p3/CDtKWqXIuBdTKiqq1s4
 Lx78R8wU/uifWSf/9+cPyJ7UCCyPpUdj/SahzZLE4ACfmdfYWIHNf0REt+kGn7Vv
 uCoe7rXBccrz03Fv5mHHuNGS24dfdMim2LXYb3GN2A5atIT0Nko=
 =xPW1
 -----END PGP SIGNATURE-----

Merge tag 'ntb-6.5' of https://github.com/jonmason/ntb

Pull NTB updates from Jon Mason:
 "Fixes for pci_clean_master, error handling in driver inits, and
  various other issues/bugs"

* tag 'ntb-6.5' of https://github.com/jonmason/ntb:
  ntb: hw: amd: Fix debugfs_create_dir error checking
  ntb.rst: Fix copy and paste error
  ntb_netdev: Fix module_init problem
  ntb: intel: Remove redundant pci_clear_master
  ntb: epf: Remove redundant pci_clear_master
  ntb_hw_amd: Remove redundant pci_clear_master
  ntb: idt: drop redundant pci_enable_pcie_error_reporting()
  MAINTAINERS: git://github -> https://github.com for jonmason
  NTB: EPF: fix possible memory leak in pci_vntb_probe()
  NTB: ntb_tool: Add check for devm_kcalloc
  NTB: ntb_transport: fix possible memory leak while device_register() fails
  ntb: intel: Fix error handling in intel_ntb_pci_driver_init()
  NTB: amd: Fix error handling in amd_ntb_pci_driver_init()
  ntb: idt: Fix error handling in idt_pci_driver_init()
2023-07-09 09:35:51 -07:00
Hugh Dickins
1c7873e336 mm: lock newly mapped VMA with corrected ordering
Lockdep is certainly right to complain about

  (&vma->vm_lock->lock){++++}-{3:3}, at: vma_start_write+0x2d/0x3f
                 but task is already holding lock:
  (&mapping->i_mmap_rwsem){+.+.}-{3:3}, at: mmap_region+0x4dc/0x6db

Invert those to the usual ordering.

Fixes: 33313a747e ("mm: lock newly mapped VMA which can be modified after it becomes visible")
Cc: stable@vger.kernel.org
Signed-off-by: Hugh Dickins <hughd@google.com>
Tested-by: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2023-07-08 16:44:11 -07:00
Linus Torvalds
946c6b59c5 16 hotfixes. Six are cc:stable and the remainder address post-6.4 issues.
-----BEGIN PGP SIGNATURE-----
 
 iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZKmgXAAKCRDdBJ7gKXxA
 joqDAP0V520Jy0cyJrRMvaQRFMqtVeDOdTpAue7ZOQHSi/LZnAD9EEAxDpYF/V4x
 PO27ixXQ4Glm2iYgH7bDX7J73WiA3wg=
 =JsYW
 -----END PGP SIGNATURE-----

Merge tag 'mm-hotfixes-stable-2023-07-08-10-43' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull hotfixes from Andrew Morton:
 "16 hotfixes. Six are cc:stable and the remainder address post-6.4
  issues"

The merge undoes the disabling of the CONFIG_PER_VMA_LOCK feature, since
it was all hopefully fixed in mainline.

* tag 'mm-hotfixes-stable-2023-07-08-10-43' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  lib: dhry: fix sleeping allocations inside non-preemptable section
  kasan, slub: fix HW_TAGS zeroing with slub_debug
  kasan: fix type cast in memory_is_poisoned_n
  mailmap: add entries for Heiko Stuebner
  mailmap: update manpage link
  bootmem: remove the vmemmap pages from kmemleak in free_bootmem_page
  MAINTAINERS: add linux-next info
  mailmap: add Markus Schneider-Pargmann
  writeback: account the number of pages written back
  mm: call arch_swap_restore() from do_swap_page()
  squashfs: fix cache race with migration
  mm/hugetlb.c: fix a bug within a BUG(): inconsistent pte comparison
  docs: update ocfs2-devel mailing list address
  MAINTAINERS: update ocfs2-devel mailing list address
  mm: disable CONFIG_PER_VMA_LOCK until its fixed
  fork: lock VMAs of the parent process when forking
2023-07-08 14:30:25 -07:00
Suren Baghdasaryan
fb49c45532 fork: lock VMAs of the parent process when forking
When forking a child process, the parent write-protects anonymous pages
and COW-shares them with the child being forked using copy_present_pte().

We must not take any concurrent page faults on the source vma's as they
are being processed, as we expect both the vma and the pte's behind it
to be stable.  For example, the anon_vma_fork() expects the parents
vma->anon_vma to not change during the vma copy.

A concurrent page fault on a page newly marked read-only by the page
copy might trigger wp_page_copy() and a anon_vma_prepare(vma) on the
source vma, defeating the anon_vma_clone() that wasn't done because the
parent vma originally didn't have an anon_vma, but we now might end up
copying a pte entry for a page that has one.

Before the per-vma lock based changes, the mmap_lock guaranteed
exclusion with concurrent page faults.  But now we need to do a
vma_start_write() to make sure no concurrent faults happen on this vma
while it is being processed.

This fix can potentially regress some fork-heavy workloads.  Kernel
build time did not show noticeable regression on a 56-core machine while
a stress test mapping 10000 VMAs and forking 5000 times in a tight loop
shows ~5% regression.  If such fork time regression is unacceptable,
disabling CONFIG_PER_VMA_LOCK should restore its performance.  Further
optimizations are possible if this regression proves to be problematic.

Suggested-by: David Hildenbrand <david@redhat.com>
Reported-by: Jiri Slaby <jirislaby@kernel.org>
Closes: https://lore.kernel.org/all/dbdef34c-3a07-5951-e1ae-e9c6e3cdf51b@kernel.org/
Reported-by: Holger Hoffstätte <holger@applied-asynchrony.com>
Closes: https://lore.kernel.org/all/b198d649-f4bf-b971-31d0-e8433ec2a34c@applied-asynchrony.com/
Reported-by: Jacob Young <jacobly.alt@gmail.com>
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=217624
Fixes: 0bff0aaea0 ("x86/mm: try VMA lock-based page fault handling first")
Cc: stable@vger.kernel.org
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2023-07-08 14:08:02 -07:00
Suren Baghdasaryan
33313a747e mm: lock newly mapped VMA which can be modified after it becomes visible
mmap_region adds a newly created VMA into VMA tree and might modify it
afterwards before dropping the mmap_lock.  This poses a problem for page
faults handled under per-VMA locks because they don't take the mmap_lock
and can stumble on this VMA while it's still being modified.  Currently
this does not pose a problem since post-addition modifications are done
only for file-backed VMAs, which are not handled under per-VMA lock.
However, once support for handling file-backed page faults with per-VMA
locks is added, this will become a race.

Fix this by write-locking the VMA before inserting it into the VMA tree.
Other places where a new VMA is added into VMA tree do not modify it
after the insertion, so do not need the same locking.

Cc: stable@vger.kernel.org
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2023-07-08 14:08:02 -07:00
Suren Baghdasaryan
c137381f71 mm: lock a vma before stack expansion
With recent changes necessitating mmap_lock to be held for write while
expanding a stack, per-VMA locks should follow the same rules and be
write-locked to prevent page faults into the VMA being expanded. Add
the necessary locking.

Cc: stable@vger.kernel.org
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2023-07-08 14:08:02 -07:00
Linus Torvalds
7fcd473a64 SCSI misc on 20230708
A few late arriving patches that missed the initial pull request.
 It's mostly bug fixes (the dt-bindings is a fix for the initial pull).
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
 -----BEGIN PGP SIGNATURE-----
 
 iJwEABMIAEQWIQTnYEDbdso9F2cI+arnQslM7pishQUCZKmvwSYcamFtZXMuYm90
 dG9tbGV5QGhhbnNlbnBhcnRuZXJzaGlwLmNvbQAKCRDnQslM7pishResAQCPDbBh
 omMRBE+W+Vx2TgOJGjo/F+T1D2JjBhLIGpNVggEApJtgrQutAToiCU/qIP9GOTl7
 evetzh5boMMuyD2s7ak=
 =pi4v
 -----END PGP SIGNATURE-----

Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull more SCSI updates from James Bottomley:
 "A few late arriving patches that missed the initial pull request. It's
  mostly bug fixes (the dt-bindings is a fix for the initial pull)"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: ufs: core: Remove unused function declaration
  scsi: target: docs: Remove tcm_mod_builder.py
  scsi: target: iblock: Quiet bool conversion warning with pr_preempt use
  scsi: dt-bindings: ufs: qcom: Fix ICE phandle
  scsi: core: Simplify scsi_cdl_check_cmd()
  scsi: isci: Fix comment typo
  scsi: smartpqi: Replace one-element arrays with flexible-array members
  scsi: target: tcmu: Replace strlcpy() with strscpy()
  scsi: ncr53c8xx: Replace strlcpy() with strscpy()
  scsi: lpfc: Fix lpfc_name struct packing
2023-07-08 12:35:18 -07:00
Linus Torvalds
84dc5aa3f0 Part 2 of I2C patches for 6.5
* xiic patch should have been in part 1 but slipped through
 * mpc patch fixes a build regression from part 1
 * nomadik is a fix which needed a rebase after part 1
 -----BEGIN PGP SIGNATURE-----
 
 iQJDBAABCgAtFiEEOZGx6rniZ1Gk92RdFA3kzBSgKbYFAmSoblYPHHdzYUBrZXJu
 ZWwub3JnAAoJEBQN5MwUoCm2iG0P/RG3yGeV0PzQ2XbKPwIMAQURQ7NiqVVrAnUP
 kkduOkPJ9QU+9Qjb/4SRCTxWFVFbqruyOZWB+5hmwHtv4MS3H1ulKaH9bat5bQsF
 F28o5pjMVQEhjl+Y1jAtnSOlhprbTds6B1NdgbMFopnQ7ExlB1/RAt0rvZdgsfkt
 WeKRQMlne0mpQ7mybp6qsN8ldYBSDu8AmZ0S/RSnCwRwl0AxYYxk5roQAfg0tbaU
 N1zWUerNO7lAVoJnFsdeo0CMxK7t3QGHPSZGayargEF0KJHmxfzU14oZ6l28j6wq
 mSazjyK5wTeqqa4mU835RO9Ko6zE42u5nM+ok8Ui6a4xWjvafNrjnZkIClMg2eC9
 7ESZoz+Rtd3kCu3LiWXqPhs9cplHrRtA4M8E4gbTbsdMB8kFRaaiocjHfPksO8SG
 QtFXHGV5AgtoBkCC3womZWvY17XOZf40S6NUFafZ8kZFg5WGCWP3rwUZhz/+frSM
 QiIdxM+cER6WC6ADnZHdQyFl1fjLc4EdbwoN54E7DRBqB4s0wy+1vU+/qf9JdIuR
 zIN0I2OFxnwFEiTfAlTX1RmYy7L/3dtP2Gk8og+W9CxHSwJsURhqIfz/MjNuoh7U
 c11jS9QfETBj2GDjRoRxE0zj4Q2rhjdTwFhQfuYp0eI6UsDfYHHB7ql2FwO1+EW1
 VkmkX38T
 =xwp6
 -----END PGP SIGNATURE-----

Merge tag 'i2c-for-6.5-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux

Pull more i2c updates from Wolfram Sang:

 - xiic patch should have been in the original pull but slipped through

 - mpc patch fixes a build regression

 - nomadik cleanup

* tag 'i2c-for-6.5-rc1-part2' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: mpc: Drop unused variable
  i2c: nomadik: Remove a useless call in the remove function
  i2c: xiic: Don't try to handle more interrupt events after error
2023-07-08 12:28:00 -07:00
Linus Torvalds
8fc3b8f082 hardening fixes for v6.5-rc1
- Check for NULL bdev in LoadPin (Matthias Kaehlcke)
 
 - Revert unwanted KUnit FORTIFY build default
 
 - Fix 1-element array causing boot warnings with xhci-hub
 -----BEGIN PGP SIGNATURE-----
 
 iQJKBAABCgA0FiEEpcP2jyKd1g9yPm4TiXL039xtwCYFAmSoVSsWHGtlZXNjb29r
 QGNocm9taXVtLm9yZwAKCRCJcvTf3G3AJjyuD/9Sgr+T3VJyROJdKouYO8tLUqaO
 g0A6+WE0L7XyO4ZYk4FOadeihsVEPuhB0fpDTwriKCKdPB35+Nhq8YfWPPQcGdjQ
 0IAT5AjsjYDDFGABRtsNRcL+KXyR+QRVUnSllEsZuwb3lyq6HRbdTF2QBjToAbyO
 QOgEnFJNqPp2w9y2KSzpMuYL4I9o1WbyM+huVSfoKe/3d2WnVKiARMpV+0EJgUAy
 BvORp55+c1w77IRbQduACWszdCLXfkQyI+p5ii3M7cZmePDe4q8LHN01WtIMEnHy
 cln7AnwU4daxzfdeAWIQMLFjOXTLHlkRhC18KSobeBc5Zkudtcg5LxtFGiDsDgOU
 mUWB/Ow8rgr6KlYkMFmFrW/GAVX12KbPXDATECa/4Yhl55Ydl/1bChJWWnX2pppU
 mRRnwIcY7MfhRLeB284Gst81wOHy408arJsm/vck5kdya0Ys1y38rgNQm7iKfXVu
 FYMrDU9qqGmeIVk2namjQYoWH5ei670PXndtrcvSffeZOhpzk2FnFphtraPe0mrl
 l1lcUonZwEoTJ4wDiOR9cjSphoDVom9LgwygQVb4KGHBjuCfRABDV2DGy9duBMtv
 Akcet48VkCX6wF91+30fFmTs5haRiF/5kkx5fGuxhFlQO8QHYVjIOH55VqhAt3mw
 d0OWiZaNRvbNfjPSkQ==
 =R3uK
 -----END PGP SIGNATURE-----

Merge tag 'hardening-v6.5-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull hardening fixes from Kees Cook:

 - Check for NULL bdev in LoadPin (Matthias Kaehlcke)

 - Revert unwanted KUnit FORTIFY build default

 - Fix 1-element array causing boot warnings with xhci-hub

* tag 'hardening-v6.5-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  usb: ch9: Replace bmSublinkSpeedAttr 1-element array with flexible array
  Revert "fortify: Allow KUnit test to build without FORTIFY"
  dm: verity-loadpin: Add NULL pointer check for 'bdev' parameter
2023-07-08 12:08:39 -07:00
Anup Sharma
bff6efc54b ntb: hw: amd: Fix debugfs_create_dir error checking
The debugfs_create_dir function returns ERR_PTR in case of error, and the
only correct way to check if an error occurred is 'IS_ERR' inline function.
This patch will replace the null-comparison with IS_ERR.

Signed-off-by: Anup Sharma <anupnewsmail@gmail.com>
Suggested-by: Ivan Orlov <ivan.orlov0322@gmail.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
2023-07-08 13:55:44 -04:00
Linus Torvalds
c206353dfd perf tools changes and fixes for v6.5: 2nd batch
Build:
 
  - Allow to generate vmlinux.h from BTF using `make GEN_VMLINUX_H=1`
    and skip if the vmlinux has no BTF.
 
  - Replace deprecated clang -target xxx option by --target=xxx.
 
 perf record:
 
  - Print event attributes with well known type and config symbols in the
    debug output like below:
 
     # perf record -e cycles,cpu-clock -C0 -vv true
     <SNIP>
     ------------------------------------------------------------
     perf_event_attr:
       type                             0 (PERF_TYPE_HARDWARE)
       size                             136
       config                           0 (PERF_COUNT_HW_CPU_CYCLES)
       { sample_period, sample_freq }   4000
       sample_type                      IP|TID|TIME|CPU|PERIOD|IDENTIFIER
       read_format                      ID
       disabled                         1
       inherit                          1
       freq                             1
       sample_id_all                    1
       exclude_guest                    1
     ------------------------------------------------------------
     sys_perf_event_open: pid -1  cpu 0  group_fd -1  flags 0x8 = 5
     ------------------------------------------------------------
     perf_event_attr:
       type                             1 (PERF_TYPE_SOFTWARE)
       size                             136
       config                           0 (PERF_COUNT_SW_CPU_CLOCK)
       { sample_period, sample_freq }   4000
       sample_type                      IP|TID|TIME|CPU|PERIOD|IDENTIFIER
       read_format                      ID
       disabled                         1
       inherit                          1
       freq                             1
       sample_id_all                    1
       exclude_guest                    1
 
  - Update AMD IBS event error message since it now support per-process
    profiling but no priviledge filters.
 
     $ sudo perf record -e ibs_op//k -C 0
     Error:
     AMD IBS doesn't support privilege filtering. Try again without
     the privilege modifiers (like 'k') at the end.
 
 perf lock contention:
 
  - Support CSV style output using -x option
 
     $ sudo perf lock con -ab -x, sleep 1
     # output: contended, total wait, max wait, avg wait, type, caller
     19, 194232, 21415, 10222, spinlock, process_one_work+0x1f0
     15, 162748, 23843, 10849, rwsem:R, do_user_addr_fault+0x40e
     4, 86740, 23415, 21685, rwlock:R, ep_poll_callback+0x2d
     1, 84281, 84281, 84281, mutex, iwl_mvm_async_handlers_wk+0x135
     8, 67608, 27404, 8451, spinlock, __queue_work+0x174
     3, 58616, 31125, 19538, rwsem:W, do_mprotect_pkey+0xff
     3, 52953, 21172, 17651, rwlock:W, do_epoll_wait+0x248
     2, 30324, 19704, 15162, rwsem:R, do_madvise+0x3ad
     1, 24619, 24619, 24619, spinlock, rcu_core+0xd4
 
  - Add --output option to save the data to a file not to be interfered
    by other debug messages.
 
 Test:
 
  - Fix event parsing test on ARM where there's no raw PMU nor supports
    PERF_PMU_CAP_EXTENDED_HW_TYPE.
 
  - Update the lock contention test case for CSV output.
 
  - Fix a segfault in the daemon command test.
 
 Vendor events (JSON):
 
  - Add has_event() to check if the given event is available on system
    at runtime.  On Intel machines, some transaction events may not be
    present when TSC extensions are disabled.
 
  - Update Intel event metrics.
 
 Misc:
 
  - Sort symbols by name using an external array of pointers instead of
    a rbtree node in the symbol.  This will save 16-bytes or 24-bytes
    per symbol whether the sorting is actually requested or not.
 
  - Fix unwinding DWARF callstacks using libdw when --symfs option is
    used.
 
 Signed-off-by: Namhyung Kim <namhyung@kernel.org>
 -----BEGIN PGP SIGNATURE-----
 
 iHUEABYIAB0WIQSo2x5BnqMqsoHtzsmMstVUGiXMgwUCZKb4mwAKCRCMstVUGiXM
 g1QqAPwKZow/DhAzyN7KvzdNd+SojRGpUMl6RkVphY/9ntDqPAD+L3V5aXLTiC1L
 8kUzdpRX5VMjqdR9U7TycUOi4QU40QA=
 =dEF1
 -----END PGP SIGNATURE-----

Merge tag 'perf-tools-for-v6.5-2-2023-07-06' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools-next

Pull more perf tools updates from Namhyung Kim:
 "These are remaining changes and fixes for this cycle.

  Build:

   - Allow generating vmlinux.h from BTF using `make GEN_VMLINUX_H=1`
     and skip if the vmlinux has no BTF.

   - Replace deprecated clang -target xxx option by --target=xxx.

  perf record:

   - Print event attributes with well known type and config symbols in
     the debug output like below:

       # perf record -e cycles,cpu-clock -C0 -vv true
       <SNIP>
       ------------------------------------------------------------
       perf_event_attr:
         type                             0 (PERF_TYPE_HARDWARE)
         size                             136
         config                           0 (PERF_COUNT_HW_CPU_CYCLES)
         { sample_period, sample_freq }   4000
         sample_type                      IP|TID|TIME|CPU|PERIOD|IDENTIFIER
         read_format                      ID
         disabled                         1
         inherit                          1
         freq                             1
         sample_id_all                    1
         exclude_guest                    1
       ------------------------------------------------------------
       sys_perf_event_open: pid -1  cpu 0  group_fd -1  flags 0x8 = 5
       ------------------------------------------------------------
       perf_event_attr:
         type                             1 (PERF_TYPE_SOFTWARE)
         size                             136
         config                           0 (PERF_COUNT_SW_CPU_CLOCK)
         { sample_period, sample_freq }   4000
         sample_type                      IP|TID|TIME|CPU|PERIOD|IDENTIFIER
         read_format                      ID
         disabled                         1
         inherit                          1
         freq                             1
         sample_id_all                    1
         exclude_guest                    1

   - Update AMD IBS event error message since it now support per-process
     profiling but no priviledge filters.

       $ sudo perf record -e ibs_op//k -C 0
       Error:
       AMD IBS doesn't support privilege filtering. Try again without
       the privilege modifiers (like 'k') at the end.

  perf lock contention:

   - Support CSV style output using -x option

       $ sudo perf lock con -ab -x, sleep 1
       # output: contended, total wait, max wait, avg wait, type, caller
       19, 194232, 21415, 10222, spinlock, process_one_work+0x1f0
       15, 162748, 23843, 10849, rwsem:R, do_user_addr_fault+0x40e
       4, 86740, 23415, 21685, rwlock:R, ep_poll_callback+0x2d
       1, 84281, 84281, 84281, mutex, iwl_mvm_async_handlers_wk+0x135
       8, 67608, 27404, 8451, spinlock, __queue_work+0x174
       3, 58616, 31125, 19538, rwsem:W, do_mprotect_pkey+0xff
       3, 52953, 21172, 17651, rwlock:W, do_epoll_wait+0x248
       2, 30324, 19704, 15162, rwsem:R, do_madvise+0x3ad
       1, 24619, 24619, 24619, spinlock, rcu_core+0xd4

   - Add --output option to save the data to a file not to be interfered
     by other debug messages.

  Test:

   - Fix event parsing test on ARM where there's no raw PMU nor supports
     PERF_PMU_CAP_EXTENDED_HW_TYPE.

   - Update the lock contention test case for CSV output.

   - Fix a segfault in the daemon command test.

  Vendor events (JSON):

   - Add has_event() to check if the given event is available on system
     at runtime. On Intel machines, some transaction events may not be
     present when TSC extensions are disabled.

   - Update Intel event metrics.

  Misc:

   - Sort symbols by name using an external array of pointers instead of
     a rbtree node in the symbol. This will save 16-bytes or 24-bytes
     per symbol whether the sorting is actually requested or not.

   - Fix unwinding DWARF callstacks using libdw when --symfs option is
     used"

* tag 'perf-tools-for-v6.5-2-2023-07-06' of git://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools-next: (38 commits)
  perf test: Fix event parsing test when PERF_PMU_CAP_EXTENDED_HW_TYPE isn't supported.
  perf test: Fix event parsing test on Arm
  perf evsel amd: Fix IBS error message
  perf: unwind: Fix symfs with libdw
  perf symbol: Fix uninitialized return value in symbols__find_by_name()
  perf test: Test perf lock contention CSV output
  perf lock contention: Add --output option
  perf lock contention: Add -x option for CSV style output
  perf lock: Remove stale comments
  perf vendor events intel: Update tigerlake to 1.13
  perf vendor events intel: Update skylakex to 1.31
  perf vendor events intel: Update skylake to 57
  perf vendor events intel: Update sapphirerapids to 1.14
  perf vendor events intel: Update icelakex to 1.21
  perf vendor events intel: Update icelake to 1.19
  perf vendor events intel: Update cascadelakex to 1.19
  perf vendor events intel: Update meteorlake to 1.03
  perf vendor events intel: Add rocketlake events/metrics
  perf vendor metrics intel: Make transaction metrics conditional
  perf jevents: Support for has_event function
  ...
2023-07-08 10:21:51 -07:00
Linus Torvalds
ad8258e877 bitmap patches for v6.5
Fixes for different bitmap pieces:
 
  - lib/test_bitmap: increment failure counter properly
 
    The tests that don't use expect_eq() macro to determine that a test is
    failured must increment failed_tests explicitly.
 
  - lib/bitmap: drop optimization of bitmap_{from,to}_arr64
 
    bitmap_{from,to}_arr64() optimization is overly optimistic on 32-bit LE
    architectures when it's wired to bitmap_copy_clear_tail().
 
  - nodemask: Drop duplicate check in for_each_node_mask()
 
    As the return value type of first_node() became unsigned, the node >= 0
    became unnecessary.
 
  - cpumask: fix function description kernel-doc notation
 
  - MAINTAINERS: Add bits.h to the BITMAP API record
  - MAINTAINERS: Add bitfield.h to the BITMAP API record
 
    Add linux/bits.h and linux/bitfield.h for visibility
 -----BEGIN PGP SIGNATURE-----
 
 iQGzBAABCgAdFiEEi8GdvG6xMhdgpu/4sUSA/TofvsgFAmShrd0ACgkQsUSA/Tof
 vsg5RAv/YyedOccCkLtd4D+l+jF/a1qd64u6HfONkYzdoSeKIBiAlKukpHOjJjky
 ii5vSwEMzW34MA6wBylmY4078OXEwEu9SUsF/+5jGvqJ1ABCZkwFoMuAavRHkHhc
 xE/es6XvpSbZ4U4GHnyaUbQCuEkpW21U644QdSWqjVPDHmo32EgtNG7hTaZfCRNh
 VNa8H+tbgi5rQUMBeyxppJjyynGKwut6pX4OcOi2lq1onz8zzHx8H4AJC2v8Yg0r
 2ZRS1FfAuk2Pvp7JFQOExcxf0x/Ph3zp8dqIgfo2pSMAi/0ZjnTkAPxCYIGsWG5u
 TbfO3rHviHtKAN0q5/6xp939G69flW5xSica+IvtuXSIS/JbllwDN4mrexYxppWH
 Euj/ixJe79Dn+jtOgG17p4cp70yAcM1IQfyWH25Q8Jej+C/gN8WB0UXD4K7jTXrn
 9rGID28WbuclAWzJDmFQTpZutG1GHjM7rytit+if08gz065vUhTllhJC+vCHQojY
 clS4E2DW
 =nZF4
 -----END PGP SIGNATURE-----

Merge tag 'bitmap-6.5-rc1' of https://github.com/norov/linux

Pull bitmap updates from Yury Norov:
 "Fixes for different bitmap pieces:

   - lib/test_bitmap: increment failure counter properly

     The tests that don't use expect_eq() macro to determine that a test
     is failured must increment failed_tests explicitly.

   - lib/bitmap: drop optimization of bitmap_{from,to}_arr64

     bitmap_{from,to}_arr64() optimization is overly optimistic
     on 32-bit LE architectures when it's wired to
     bitmap_copy_clear_tail().

   - nodemask: Drop duplicate check in for_each_node_mask()

     As the return value type of first_node() became unsigned, the node
     >= 0 became unnecessary.

   - cpumask: fix function description kernel-doc notation

   - MAINTAINERS: Add bits.h and bitfield.h to the BITMAP API record

     Add linux/bits.h and linux/bitfield.h for visibility"

* tag 'bitmap-6.5-rc1' of https://github.com/norov/linux:
  MAINTAINERS: Add bitfield.h to the BITMAP API record
  MAINTAINERS: Add bits.h to the BITMAP API record
  cpumask: fix function description kernel-doc notation
  nodemask: Drop duplicate check in for_each_node_mask()
  lib/bitmap: drop optimization of bitmap_{from,to}_arr64
  lib/test_bitmap: increment failure counter properly
2023-07-08 10:02:24 -07:00
Geert Uytterhoeven
8ba388c06b lib: dhry: fix sleeping allocations inside non-preemptable section
The Smatch static checker reports the following warnings:

    lib/dhry_run.c:38 dhry_benchmark() warn: sleeping in atomic context
    lib/dhry_run.c:43 dhry_benchmark() warn: sleeping in atomic context

Indeed, dhry() does sleeping allocations inside the non-preemptable
section delimited by get_cpu()/put_cpu().

Fix this by using atomic allocations instead.
Add error handling, as atomic these allocations may fail.

Link: https://lkml.kernel.org/r/bac6d517818a7cd8efe217c1ad649fffab9cc371.1688568764.git.geert+renesas@glider.be
Fixes: 13684e966d ("lib: dhry: fix unstable smp_processor_id(_) usage")
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/r/0469eb3a-02eb-4b41-b189-de20b931fa56@moroto.mountain
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-07-08 09:29:32 -07:00