Leon Hwang 452ad25358 bpf: Reject bpf_timer for PREEMPT_RT ...

[ Upstream commit e25ddfb388 ]

When enable CONFIG_PREEMPT_RT, the kernel will warn when run timer
selftests by './test_progs -t timer':

BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:48

In order to avoid such warning, reject bpf_timer in verifier when
PREEMPT_RT is enabled.

Signed-off-by: Leon Hwang <leon.hwang@linux.dev>
Link: https://lore.kernel.org/r/20250910125740.52172-2-leon.hwang@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2025-10-02 13:44:09 +02:00

..

preload

bpf/preload: Don't select USERMODE_DRIVER

2025-08-15 12:13:48 +02:00

arena.c

bpf: Fix softlockup in arena_map_free on 64k page kernel

2025-02-27 04:30:19 -08:00

arraymap.c

bpf: Prevent tailcall infinite loop caused by freplace

2024-12-14 20:03:49 +01:00

bloom_filter.c

bpf: Check bloom filter map value size

2024-03-27 09:56:17 -07:00

bpf_cgrp_storage.c

bpf: Only fails the busy counter check in bpf_cgrp_storage_get if it creates storage

2025-05-02 07:59:16 +02:00

bpf_inode_storage.c

bpf: switch fdget_raw() uses to CLASS(fd_raw, ...)

2024-08-13 15:58:10 -07:00

bpf_iter.c

[tree-wide] finally take no_llseek out

2024-09-27 08:18:43 -07:00

bpf_local_storage.c

bpf: bpf_local_storage: Always use bpf_mem_alloc in PREEMPT_RT

2025-02-08 09:57:29 +01:00

bpf_lru_list.c

bpf: Adjust free target to avoid global starvation of LRU map

2025-07-17 18:37:22 +02:00

bpf_lru_list.h

bpf: Adjust free target to avoid global starvation of LRU map

2025-07-17 18:37:22 +02:00

bpf_lsm.c

bpf, lsm: Remove bpf_lsm_key_free hook

2024-10-08 12:52:40 -07:00

bpf_struct_ops.c

bpf: Pass the same orig_call value to trampoline functions

2025-06-27 11:11:31 +01:00

bpf_task_storage.c

bpf: Teach verifier that certain helpers accept NULL pointer.

2023-04-04 16:57:16 -07:00

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: Use proper type to calculate bpf_raw_tp_null_args.mask index

2025-06-27 11:11:33 +01:00

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

bpf: Allow pre-ordering for bpf cgroup progs

2025-05-29 11:02:17 +02:00

core.c

bpf: Check the helper function is valid in get_helper_proto

2025-10-02 13:44:08 +02:00

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: Fix out-of-bounds dynptr write in bpf_crypto_crypt

2025-09-19 16:35:44 +02:00

devmap.c

bpf: fix OOB devmap writes when deleting elements

2024-12-14 20:03:30 +01:00

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

2024-12-05 14:01:57 +01:00

hashtab.c

bpf: fix possible endless loop in BPF map iteration

2025-05-29 11:02:01 +02:00

helpers.c

bpf: Tell memcg to use allow_spinning=false path in bpf_timer_init()

2025-09-19 16:35:44 +02:00

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

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: Fix exact match conditions in trie_get_next_key()

2024-12-14 20:03:19 +01:00

Makefile

bpf: Remove custom build rule

2024-08-30 08:55:26 -07:00

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

bpf: Add bpf_mem_alloc_check_size() helper

2024-10-30 12:13:46 -07:00

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

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: unify VM_WRITE vs VM_MAYWRITE use in BPF map mmaping logic

2025-02-27 04:30:18 -08:00

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

bpf: Move bpf map owner out of common struct

2025-09-09 18:58:01 +02:00

sysfs_btf.c

btf: Avoid weak external references

2024-04-16 16:35:13 +02:00

task_iter.c

bpf: Fix iter/task tid filtering

2024-10-17 10:52:18 -07:00

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

bpf: convert bpf_token_create() to CLASS(fd, ...)

2024-09-12 18:58:02 -07:00

trampoline.c

bpf: Prevent tailcall infinite loop caused by freplace

2024-12-14 20:03:49 +01:00

verifier.c

bpf: Reject bpf_timer for PREEMPT_RT

2025-10-02 13:44:09 +02:00