================================================================== BUG: KCSAN: data-race in avc_policy_seqno / avc_ss_reset write to 0xffffffff88e90c08 of 4 bytes by task 6546 on cpu 0: 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:2205 [inline] security_set_bools+0x301/0x340 security/selinux/ss/services.c:3140 sel_commit_bools_write+0x1ea/0x270 security/selinux/selinuxfs.c:1332 do_loop_readv_writev include/linux/uio.h:-1 [inline] vfs_writev+0x3ee/0x870 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+0x2006/0x2fb0 arch/x86/include/generated/asm/syscalls_64.h:21 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 0xffffffff88e90c08 of 4 bytes by task 6506 on cpu 1: avc_policy_seqno+0x15/0x30 security/selinux/avc.c:1207 selinux_file_permission+0x1cd/0x320 security/selinux/hooks.c:3762 security_file_permission+0x3e/0x80 security/security.c:2844 rw_verify_area+0x8d/0x160 fs/read_write.c:473 __io_read+0x3d7/0xc20 io_uring/rw.c:937 io_read+0x1c/0x60 io_uring/rw.c:1020 __io_issue_sqe+0xfe/0x2e0 io_uring/io_uring.c:1730 io_issue_sqe+0x53/0x970 io_uring/io_uring.c:1753 io_queue_sqe io_uring/io_uring.c:1960 [inline] io_req_task_submit+0x6b/0xc0 io_uring/io_uring.c:1375 __io_run_local_work_loop io_uring/io_uring.c:1290 [inline] __io_run_local_work+0x185/0x4f0 io_uring/io_uring.c:1314 io_run_local_work io_uring/io_uring.c:1356 [inline] io_cqring_wait io_uring/io_uring.c:2609 [inline] __do_sys_io_uring_enter io_uring/io_uring.c:3435 [inline] __se_sys_io_uring_enter+0x144b/0x1b70 io_uring/io_uring.c:3330 __x64_sys_io_uring_enter+0x78/0x90 io_uring/io_uring.c:3330 x64_sys_call+0x28c8/0x2fb0 arch/x86/include/generated/asm/syscalls_64.h:427 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: 0x00000009 -> 0x0000000a Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 6506 Comm: syz.3.678 Not tainted 6.15.0-syzkaller-03645-g3d413f0cfd7e #0 PREEMPT(voluntary) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 ==================================================================