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: 31bf1dbccf ("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
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bpf	bpf: Undo strict enforcement for walking untagged fields.	2023-04-04 16:57:24 -07:00
cgroup	cgroup: Make current_cgns_cgroup_dfl() safe to call after exit_task_namespace()	2023-03-14 16:56:20 -07:00
configs	…
debug	…
dma	swiotlb: mark swiotlb_memblock_alloc() as __init	2023-02-22 06:44:48 -08:00
entry	…
events	Char/Misc and other driver subsystem changes for 6.3-rc1	2023-02-24 12:47:33 -08:00
futex	…
gcov	…
irq	iommufd for 6.3	2023-02-24 14:34:12 -08:00
kcsan	…
livepatch	Livepatching changes for 6.3	2023-02-23 14:00:10 -08:00
locking	RCU pull request for v6.3	2023-02-21 10:45:51 -08:00
module	kallsyms: Disable preemption for find_kallsyms_symbol_value	2023-04-04 17:11:59 -07:00
power	Merge branches 'powercap', 'pm-domains', 'pm-em' and 'pm-opp'	2023-02-15 20:06:26 +01:00
printk	printk changes for 6.3	2023-02-23 13:49:45 -08:00
rcu	Merge branch 'stall.2023.01.09a' into HEAD	2023-02-02 16:40:07 -08:00
sched	- Daniel Verkamp has contributed a memfd series ("mm/memfd: add	2023-02-23 17:09:35 -08:00
time	Updates for timekeeping, timers and clockevent/source drivers:	2023-02-21 09:45:13 -08:00
trace	bpf-next-for-netdev	2023-03-06 20:36:39 -08:00
.gitignore	…
Kconfig.freezer	…
Kconfig.hz	…
Kconfig.locks	…
Kconfig.preempt	…
Makefile	…
acct.c	…
async.c	…
audit.c	…
audit.h	…
audit_fsnotify.c	…
audit_tree.c	…
audit_watch.c	…
auditfilter.c	…
auditsc.c	\n	2023-02-20 12:38:27 -08:00
backtracetest.c	…
bounds.c	…
capability.c	…
cfi.c	…
compat.c	…
configs.c	…
context_tracking.c	…
cpu.c	…
cpu_pm.c	…
crash_core.c	mm: remove 'First tail page' members from struct page	2023-02-02 22:32:59 -08:00
crash_dump.c	…
cred.c	…
delayacct.c	…
dma.c	…
exec_domain.c	…
exit.c	arm64 updates for 6.3:	2023-02-21 15:27:48 -08:00
extable.c	…
fail_function.c	kernel/fail_function: fix memory leak with using debugfs_lookup()	2023-02-08 13:36:22 +01:00
fork.c	- Daniel Verkamp has contributed a memfd series ("mm/memfd: add	2023-02-23 17:09:35 -08:00
freezer.c	…
gen_kheaders.sh	…
groups.c	…
hung_task.c	hung_task: print message when hung_task_warnings gets down to zero.	2023-02-09 17:03:20 -08:00
iomem.c	…
irq_work.c	…
jump_label.c	…
kallsyms.c	…
kallsyms_internal.h	…
kallsyms_selftest.c	…
kallsyms_selftest.h	…
kcmp.c	…
kcov.c	mm: replace vma->vm_flags direct modifications with modifier calls	2023-02-09 16:51:39 -08:00
kexec.c	kexec: introduce sysctl parameters kexec_load_limit_*	2023-02-02 22:50:05 -08:00
kexec_core.c	There is no particular theme here - mainly quick hits all over the tree.	2023-02-23 17:55:40 -08:00
kexec_elf.c	…
kexec_file.c	kexec: introduce sysctl parameters kexec_load_limit_*	2023-02-02 22:50:05 -08:00
kexec_internal.h	…
kheaders.c	…
kmod.c	…
kprobes.c	x86/kprobes: Fix arch_check_optimized_kprobe check within optimized_kprobe range	2023-02-21 08:49:16 +09:00
ksysfs.c	…
kthread.c	kthread_worker: check all delayed works when destroy kthread worker	2023-02-02 22:50:02 -08:00
latencytop.c	…
module_signature.c	…
notifier.c	kernel/notifier: Remove CONFIG_SRCU	2023-02-02 16:26:06 -08:00
nsproxy.c	…
padata.c	…
panic.c	cpuidle: lib/bug: Disable rcu_is_watching() during WARN/BUG	2023-01-31 15:01:45 +01:00
params.c	…
pid.c	…
pid_namespace.c	- Daniel Verkamp has contributed a memfd series ("mm/memfd: add	2023-02-23 17:09:35 -08:00
pid_sysctl.h	…
profile.c	…
ptrace.c	…
range.c	…
reboot.c	…
regset.c	…
relay.c	mm: replace vma->vm_flags direct modifications with modifier calls	2023-02-09 16:51:39 -08:00
resource.c	dax/kmem: Fix leak of memory-hotplug resources	2023-02-17 14:58:01 -08:00
resource_kunit.c	…
rseq.c	…
scftorture.c	…
scs.c	…
seccomp.c	…
signal.c	…
smp.c	…
smpboot.c	…
smpboot.h	…
softirq.c	…
stackleak.c	…
stacktrace.c	…
static_call.c	…
static_call_inline.c	…
stop_machine.c	…
sys.c	- Daniel Verkamp has contributed a memfd series ("mm/memfd: add	2023-02-23 17:09:35 -08:00
sys_ni.c	…
sysctl-test.c	…
sysctl.c	sysctl: fix proc_dobool() usability	2023-02-21 13:34:07 -08:00
task_work.c	…
taskstats.c	…
torture.c	…
tracepoint.c	tracepoint: Allow livepatch module add trace event	2023-02-18 14:34:36 -05:00
tsacct.c	…
ucount.c	…
uid16.c	…
uid16.h	…
umh.c	freezer,umh: Fix call_usermode_helper_exec() vs SIGKILL	2023-02-13 16:36:14 +01:00
up.c	…
user-return-notifier.c	…
user.c	…
user_namespace.c	userns: fix a struct's kernel-doc notation	2023-02-02 22:50:04 -08:00
usermode_driver.c	…
utsname.c	…
utsname_sysctl.c	…
watch_queue.c	…
watchdog.c	…
watchdog_hld.c	…
workqueue.c	…
workqueue_internal.h	…