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: 1ae6921009e5 ("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