Jiri Olsa d099f594ad kallsyms: Disable preemption for find_kallsyms_symbol_value ... Artem reported suspicious RCU usage [1]. The reason is that verifier calls find_kallsyms_symbol_value with preemption enabled which will trigger suspicious RCU usage warning in rcu_dereference_sched call. Disabling preemption in find_kallsyms_symbol_value and adding __find_kallsyms_symbol_value function. Fixes: 31bf1dbccfb0 ("bpf: Fix attaching fentry/fexit/fmod_ret/lsm to modules") Reported-by: Artem Savkov <asavkov@redhat.com> Signed-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Tested-by: Artem Savkov <asavkov@redhat.com> Reviewed-by: Zhen Lei <thunder.leizhen@huawei.com> Link: https://lore.kernel.org/bpf/20230403220254.2191240-1-jolsa@kernel.org [1] https://lore.kernel.org/bpf/ZBrPMkv8YVRiWwCR@samus.usersys.redhat.com/		2023-04-04 17:11:59 -07:00
..
debug_kmemleak.c
decompress.c	module/decompress: Support zstd in-kernel decompression	2022-12-07 12:05:05 -08:00
internal.h	kallsyms, bpf: Move find_kallsyms_symbol_value out of internal header	2023-03-17 13:45:51 +01:00
kallsyms.c	kallsyms: Disable preemption for find_kallsyms_symbol_value	2023-04-04 17:11:59 -07:00
Kconfig	module/decompress: Support zstd in-kernel decompression	2022-12-07 12:05:05 -08:00
kdb.c
livepatch.c
main.c	module: Use kstrtobool() instead of strtobool()	2023-01-25 14:07:21 -08:00
Makefile
procfs.c	module: Modify module_flags() to accept show_state argument	2022-07-14 17:40:23 -07:00
signing.c
strict_rwx.c
sysfs.c	module: remove redundant module_sysfs_initialized variable	2022-11-11 10:19:52 -08:00
tracking.c	module: tracking: Keep a record of tainted unloaded modules only	2022-10-10 12:16:19 -07:00
tree_lookup.c
version.c