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BUG: KCSAN: data-race in audit_log_start / skb_dequeue

write to 0xffffffff8624f660 of 4 bytes by task 27 on cpu 0:
 __skb_unlink include/linux/skbuff.h:2022 [inline]
 __skb_dequeue include/linux/skbuff.h:2042 [inline]
 skb_dequeue+0x84/0x150 net/core/skbuff.c:3040
 kauditd_send_queue+0x3e/0x220 kernel/audit.c:720
 kauditd_thread+0x483/0x560 kernel/audit.c:854
 kthread+0x1d4/0x200 drivers/block/aoe/aoecmd.c:1253
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352

read to 0xffffffff8624f660 of 4 bytes by task 25458 on cpu 1:
 audit_log_start kernel/audit.c:1768 [inline]
 audit_log_start+0xf9/0x610 kernel/audit.c:1744
 audit_seccomp+0x54/0x1a0 kernel/auditsc.c:2611
 seccomp_log kernel/seccomp.c:675 [inline]
 __seccomp_filter+0x6ac/0xf30 kernel/seccomp.c:920
 __secure_computing+0xb4/0x210 kernel/seccomp.c:948
 syscall_trace_enter+0x215/0x740 arch/x86/entry/common.c:118
 do_syscall_64+0x2bf/0x3a0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 25458 Comm: syz-executor.1 Not tainted 5.5.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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