Andrea Righi 23579010cf bpf: Fix bpf_get_smp_processor_id() on !CONFIG_SMP ... On x86-64 calling bpf_get_smp_processor_id() in a kernel with CONFIG_SMP disabled can trigger the following bug, as pcpu_hot is unavailable: [ 8.471774] BUG: unable to handle page fault for address: 00000000936a290c [ 8.471849] #PF: supervisor read access in kernel mode [ 8.471881] #PF: error_code(0x0000) - not-present page Fix by inlining a return 0 in the !CONFIG_SMP case. Fixes: 1ae6921009 ("bpf: inline bpf_get_smp_processor_id() helper") Signed-off-by: Andrea Righi <arighi@nvidia.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20241217195813.622568-1-arighi@nvidia.com		2024-12-17 16:09:24 -08:00
..
preload	bpf: make preloaded map iterators to display map elements count	2023-07-06 12:42:25 -07:00
arena.c	bpf: Do not alloc arena on unsupported arches	2024-11-15 08:10:13 -08:00
arraymap.c	bpf: Prevent tailcall infinite loop caused by freplace	2024-10-16 09:21:18 -07:00
bloom_filter.c	bpf: Check bloom filter map value size	2024-03-27 09:56:17 -07:00
bpf_cgrp_storage.c	bpf: Add "bool swap_uptrs" arg to bpf_local_storage_update() and bpf_selem_alloc()	2024-10-24 10:25:59 -07:00
bpf_inode_storage.c	bpf-next-bpf-next-6.13	2024-11-21 08:11:04 -08:00
bpf_iter.c	[tree-wide] finally take no_llseek out	2024-09-27 08:18:43 -07:00
bpf_local_storage.c	bpf: Add uptr support in the map_value of the task local storage.	2024-10-24 10:25:59 -07:00
bpf_lru_list.c	bpf: Address KCSAN report on bpf_lru_list	2023-05-12 12:01:03 -07:00
bpf_lru_list.h	bpf: lru: Remove unused declaration bpf_lru_promote()	2023-08-08 17:21:42 -07:00
bpf_lsm.c	bpf, lsm: Remove getlsmprop hooks BTF IDs	2024-11-25 14:14:17 -08:00
bpf_struct_ops.c	bpf: Add kernel symbol for struct_ops trampoline	2024-11-12 17:13:46 -08:00
bpf_task_storage.c	bpf-next-bpf-next-6.13	2024-11-21 08:11:04 -08:00
btf_iter.c	bpf: Remove custom build rule	2024-08-30 08:55:26 -07:00
btf_relocate.c	bpf: Remove custom build rule	2024-08-30 08:55:26 -07:00
btf.c	bpf: Augment raw_tp arguments with PTR_MAYBE_NULL	2024-12-13 16:24:53 -08:00
cgroup_iter.c	bpf: Let verifier consider {task,cgroup} is trusted in bpf_iter_reg	2023-11-07 15:24:25 -08:00
cgroup.c	Summary	2024-11-22 20:36:11 -08:00
core.c	bpf: fix potential error return	2024-12-10 11:17:53 -08:00
cpumap.c	bpf, cpumap: Move xdp:xdp_cpumap_kthread tracepoint before rcv	2024-09-11 16:32:11 +02:00
cpumask.c	bpf: Allow invoking kfuncs from BPF_PROG_TYPE_SYSCALL progs	2024-04-05 10:56:09 -07:00
crypto.c	bpf: crypto: make state and IV dynptr nullable	2024-06-13 16:33:04 -07:00
devmap.c	bpf: fix OOB devmap writes when deleting elements	2024-11-25 14:25:48 -08:00
disasm.c	bpf: add special internal-only MOV instruction to resolve per-CPU addrs	2024-04-03 10:29:55 -07:00
disasm.h	bpf: Relicense disassembler as GPL-2.0-only OR BSD-2-Clause	2021-09-02 14:49:23 +02:00
dispatcher.c	bpf: Add kernel symbol for struct_ops trampoline	2024-11-12 17:13:46 -08:00
hashtab.c	bpf: Call free_htab_elem() after htab_unlock_bucket()	2024-11-11 08:18:30 -08:00
helpers.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf	2024-11-13 12:52:51 -08:00
inode.c	bpf: Preserve param->string when parsing mount options	2024-10-22 12:56:38 -07:00
Kconfig	bpf: remove CONFIG_BPF_JIT dependency on CONFIG_MODULES of	2024-05-14 00:36:29 -07:00
kmem_cache_iter.c	bpf: Add open coded version of kmem_cache iterator	2024-11-01 11:08:32 -07:00
link_iter.c	bpf: Add bpf_link iterator	2022-05-10 11:20:45 -07:00
local_storage.c	bpf: Replace 8 seq_puts() calls by seq_putc() calls	2024-07-29 12:53:00 -07:00
log.c	bpf: Fix print_reg_state's constant scalar dump	2024-10-17 11:06:34 -07:00
lpm_trie.c	bpf: Use raw_spinlock_t for LPM trie	2024-12-06 09:14:26 -08:00
Makefile	bpf: Avoid deadlock caused by nested kprobe and fentry bpf programs	2024-12-14 09:49:27 -08:00
map_in_map.c	bpf: switch maps to CLASS(fd, ...)	2024-08-13 15:58:17 -07:00
map_in_map.h	bpf: Add map and need_defer parameters to .map_fd_put_ptr()	2023-12-04 17:50:26 -08:00
map_iter.c	bpf: treewide: Annotate BPF kfuncs in BTF	2024-01-31 20:40:56 -08:00
memalloc.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf	2024-11-13 12:52:51 -08:00
mmap_unlock_work.h	bpf: Introduce helper bpf_find_vma	2021-11-07 11:54:51 -08:00
mprog.c	bpf: Handle bpf_mprog_query with NULL entry	2023-10-06 17:11:20 -07:00
net_namespace.c	net: Add includes masked by netdevice.h including uapi/bpf.h	2021-12-29 20:03:05 -08:00
offload.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2023-09-21 21:49:45 +02:00
percpu_freelist.c	bpf: Initialize same number of free nodes for each pcpu_freelist	2022-11-11 12:05:14 -08:00
percpu_freelist.h	bpf: Use raw_spin_trylock() for pcpu_freelist_push/pop in NMI	2020-10-06 00:04:11 +02:00
prog_iter.c	bpf: Refactor bpf_iter_reg to have separate seq_info member	2020-07-25 20:16:32 -07:00
queue_stack_maps.c	bpf: Avoid deadlock when using queue and stack maps from NMI	2023-09-11 19:04:49 -07:00
range_tree.c	bpf: Add necessary migrate_disable to range_tree.	2024-11-15 08:11:53 -08:00
range_tree.h	bpf: Introduce range_tree data structure and use it in bpf arena	2024-11-13 13:52:45 -08:00
relo_core.c	bpf: Remove custom build rule	2024-08-30 08:55:26 -07:00
reuseport_array.c	bpf: Use sockfd_put() helper	2024-08-30 08:57:47 -07:00
ringbuf.c	bpf: Add MEM_WRITE attribute	2024-10-22 15:42:56 -07:00
stackmap.c	bpf: wire up sleepable bpf_get_stack() and bpf_get_task_stack() helpers	2024-09-11 09:58:31 -07:00
syscall.c	tracing updates for v6.13:	2024-11-22 13:27:01 -08:00
sysfs_btf.c	btf: Avoid weak external references	2024-04-16 16:35:13 +02:00
task_iter.c	vfs-6.13.file	2024-11-18 10:30:29 -08:00
tcx.c	bpf, tcx: Get rid of tcx_link_const	2023-10-23 15:01:53 -07:00
tnum.c	bpf: simplify tnum output if a fully known constant	2023-12-02 11:36:51 -08:00
token.c	remove pointless includes of <linux/fdtable.h>	2024-10-07 13:34:41 -04:00
trampoline.c	bpf: Add kernel symbol for struct_ops trampoline	2024-11-12 17:13:46 -08:00
verifier.c	bpf: Fix bpf_get_smp_processor_id() on !CONFIG_SMP	2024-12-17 16:09:24 -08:00