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BUG: KCSAN: data-race in __htab_map_lookup_elem / bpf_lru_pop_free

write to 0xffff8881199680e8 of 4 bytes by task 6187 on cpu 0:
 __local_list_add_pending kernel/bpf/bpf_lru_list.c:358 [inline]
 bpf_common_lru_pop_free kernel/bpf/bpf_lru_list.c:457 [inline]
 bpf_lru_pop_free+0xbf0/0xcd0 kernel/bpf/bpf_lru_list.c:504
 prealloc_lru_pop kernel/bpf/hashtab.c:303 [inline]
 __htab_lru_percpu_map_update_elem+0xea/0x600 kernel/bpf/hashtab.c:1349
 bpf_percpu_hash_update+0x61/0xa0 kernel/bpf/hashtab.c:2408
 bpf_map_update_value+0x297/0x3a0 kernel/bpf/syscall.c:266
 generic_map_update_batch+0x3f5/0x540 kernel/bpf/syscall.c:1982
 bpf_map_do_batch+0x258/0x380 kernel/bpf/syscall.c:5344
 __sys_bpf+0x2e0/0x790 kernel/bpf/syscall.c:-1
 __do_sys_bpf kernel/bpf/syscall.c:5943 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5941 [inline]
 __x64_sys_bpf+0x41/0x50 kernel/bpf/syscall.c:5941
 x64_sys_call+0x2478/0x2fb0 arch/x86/include/generated/asm/syscalls_64.h:322
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd2/0x200 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffff8881199680e8 of 4 bytes by task 6184 on cpu 1:
 lookup_nulls_elem_raw kernel/bpf/hashtab.c:643 [inline]
 __htab_map_lookup_elem+0xab/0x150 kernel/bpf/hashtab.c:673
 htab_lru_percpu_map_lookup_elem+0x20/0xb0 kernel/bpf/hashtab.c:2342
 bpf_prog_21aeb496bf6470bb+0x4b/0x53
 bpf_dispatcher_nop_func include/linux/bpf.h:1322 [inline]
 __bpf_prog_run include/linux/filter.h:718 [inline]
 bpf_prog_run include/linux/filter.h:725 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:2258 [inline]
 bpf_trace_run4+0x114/0x1d0 kernel/trace/bpf_trace.c:2301
 __traceiter_sched_switch+0x3c/0x60 include/trace/events/sched.h:220
 __do_trace_sched_switch include/trace/events/sched.h:220 [inline]
 trace_sched_switch include/trace/events/sched.h:220 [inline]
 __schedule+0xa1f/0xb30 kernel/sched/core.c:6783
 __schedule_loop kernel/sched/core.c:6864 [inline]
 schedule+0x5f/0xd0 kernel/sched/core.c:6879
 do_nanosleep+0x96/0x330 kernel/time/hrtimer.c:2100
 hrtimer_nanosleep+0xdd/0x280 kernel/time/hrtimer.c:2147
 common_nsleep+0x62/0x80 kernel/time/posix-timers.c:1353
 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1399 [inline]
 __se_sys_clock_nanosleep+0x21a/0x250 kernel/time/posix-timers.c:1376
 __x64_sys_clock_nanosleep+0x55/0x70 kernel/time/posix-timers.c:1376
 x64_sys_call+0x1df0/0x2fb0 arch/x86/include/generated/asm/syscalls_64.h:231
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd2/0x200 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0xe77e3885 -> 0x200cb4aa

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 6184 Comm: syz.2.939 Not tainted 6.16.0-rc6-syzkaller-00002-g155a3c003e55 #0 PREEMPT(voluntary) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
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