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BUG: KCSAN: data-race in ring_buffer_unlock_commit / ring_buffer_unlock_commit

write to 0xffff888100074cb4 of 1 bytes by task 12003 on cpu 0:
 rb_wakeups kernel/trace/ring_buffer.c:4382 [inline]
 ring_buffer_unlock_commit+0x6f/0x450 kernel/trace/ring_buffer.c:4582
 __buffer_unlock_commit kernel/trace/trace.h:1698 [inline]
 trace_buffer_unlock_commit_regs+0x43/0x310 kernel/trace/trace.c:2060
 trace_event_buffer_commit+0x149/0x590 kernel/trace/trace.c:2035
 do_trace_event_raw_event_memcg_rstat_stats include/trace/events/memcg.h:12 [inline]
 trace_event_raw_event_memcg_rstat_stats+0xd2/0x130 include/trace/events/memcg.h:12
 __do_trace_mod_memcg_state include/trace/events/memcg.h:34 [inline]
 trace_mod_memcg_state include/trace/events/memcg.h:34 [inline]
 __mod_memcg_state+0x26c/0x280 mm/memcontrol.c:905
 mod_memcg_state mm/memcontrol.c:925 [inline]
 account_kmem_nmi_safe mm/memcontrol.c:3121 [inline]
 obj_cgroup_charge_pages mm/memcontrol.c:3165 [inline]
 __memcg_kmem_charge_page+0x3a2/0x3b0 mm/memcontrol.c:3205
 __alloc_frozen_pages_noprof+0x1f4/0x3d0 mm/page_alloc.c:5453
 alloc_pages_mpol+0xaf/0x1d0 mm/mempolicy.c:2486
 alloc_frozen_pages_noprof mm/mempolicy.c:2557 [inline]
 alloc_pages_noprof+0x94/0x140 mm/mempolicy.c:2577
 pagetable_alloc_noprof include/linux/mm.h:3794 [inline]
 __pte_alloc_one_noprof include/asm-generic/pgalloc.h:76 [inline]
 pte_alloc_one+0x1c/0xc0 arch/x86/mm/pgtable.c:18
 __pte_alloc+0x32/0x2a0 mm/memory.c:453
 copy_pte_range mm/memory.c:1335 [inline]
 copy_pmd_range mm/memory.c:1490 [inline]
 copy_pud_range mm/memory.c:1527 [inline]
 copy_p4d_range mm/memory.c:1551 [inline]
 copy_page_range+0x2caa/0x3350 mm/memory.c:1637
 dup_mmap+0x874/0x10c0 mm/mmap.c:1819
 dup_mm kernel/fork.c:1543 [inline]
 copy_mm+0xf5/0x340 kernel/fork.c:1595
 copy_process+0x10e9/0x23f0 kernel/fork.c:2321
 kernel_clone+0x1c0/0x5f0 kernel/fork.c:2785
 __do_sys_clone kernel/fork.c:2927 [inline]
 __se_sys_clone kernel/fork.c:2911 [inline]
 __x64_sys_clone+0x143/0x180 kernel/fork.c:2911
 x64_sys_call+0x2479/0x2550 arch/x86/include/generated/asm/syscalls_64.h:57
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x112/0x360 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffff888100074cb4 of 1 bytes by task 16243 on cpu 1:
 rb_wakeups kernel/trace/ring_buffer.c:4381 [inline]
 ring_buffer_unlock_commit+0x57/0x450 kernel/trace/ring_buffer.c:4582
 __buffer_unlock_commit kernel/trace/trace.h:1698 [inline]
 trace_buffer_unlock_commit_regs+0x43/0x310 kernel/trace/trace.c:2060
 trace_event_buffer_commit+0x149/0x590 kernel/trace/trace.c:2035
 do_trace_event_raw_event_sys_exit include/trace/events/syscalls.h:44 [inline]
 trace_event_raw_event_sys_exit+0x9f/0xf0 include/trace/events/syscalls.h:44
 __do_trace_sys_exit include/trace/events/syscalls.h:44 [inline]
 trace_sys_exit include/trace/events/syscalls.h:44 [inline]
 trace_syscall_exit+0xc2/0x120 kernel/entry/syscall-common.c:18
 syscall_exit_work include/linux/entry-common.h:269 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:304 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:341 [inline]
 do_syscall_64+0x31c/0x360 arch/x86/entry/syscall_64.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x01 -> 0x00

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 16243 Comm: syz.9.3878 Not tainted syzkaller #0 PREEMPT(lazy) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
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