==================================================================
BUG: KCSAN: data-race in avc_policy_seqno / avc_ss_reset

write to 0xffffffff88f03c28 of 4 bytes by task 7023 on cpu 1:
 avc_latest_notif_update security/selinux/avc.c:582 [inline]
 avc_ss_reset+0x20c/0x240 security/selinux/avc.c:971
 selinux_notify_policy_change security/selinux/ss/services.c:2231 [inline]
 security_set_bools+0x301/0x340 security/selinux/ss/services.c:3166
 sel_commit_bools_write+0x1ea/0x270 security/selinux/selinuxfs.c:1355
 do_loop_readv_writev fs/read_write.c:850 [inline]
 vfs_writev+0x406/0x8b0 fs/read_write.c:1059
 do_writev+0xe7/0x210 fs/read_write.c:1103
 __do_sys_writev fs/read_write.c:1171 [inline]
 __se_sys_writev fs/read_write.c:1168 [inline]
 __x64_sys_writev+0x45/0x50 fs/read_write.c:1168
 x64_sys_call+0x1ba5/0x3000 arch/x86/include/generated/asm/syscalls_64.h:21
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd8/0x2a0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffffffff88f03c28 of 4 bytes by task 3305 on cpu 0:
 avc_policy_seqno+0x15/0x30 security/selinux/avc.c:1207
 task_avdcache_search security/selinux/hooks.c:3157 [inline]
 selinux_inode_permission+0x3bc/0x7c0 security/selinux/hooks.c:3243
 security_inode_permission+0x6d/0xb0 security/security.c:1816
 inode_permission+0x20e/0x3c0 fs/namei.c:604
 lookup_inode_permission_may_exec fs/namei.c:636 [inline]
 may_lookup fs/namei.c:1900 [inline]
 link_path_walk+0x779/0xe30 fs/namei.c:2537
 path_openat+0x1c0/0x23b0 fs/namei.c:4783
 do_filp_open+0x109/0x230 fs/namei.c:4814
 do_sys_openat2+0xa6/0x150 fs/open.c:1430
 do_sys_open fs/open.c:1436 [inline]
 __do_sys_openat fs/open.c:1452 [inline]
 __se_sys_openat fs/open.c:1447 [inline]
 __x64_sys_openat+0xf2/0x120 fs/open.c:1447
 x64_sys_call+0x2b07/0x3000 arch/x86/include/generated/asm/syscalls_64.h:258
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd8/0x2a0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x00000011 -> 0x00000012

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 UID: 0 PID: 3305 Comm: udevd Not tainted syzkaller #0 PREEMPT(voluntary) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
==================================================================
udevd[3305]: inotify_add_watch(7, /dev/loop9p2, 10) failed: No such file or directory
udevd[3305]: inotify_add_watch(7, /dev/loop9p2, 10) failed: No such file or directory