syzbot

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BUG: KCSAN: data-race in selinux_inode_permission / selinux_inode_permission

read to 0xffff8881283aec20 of 4 bytes by task 7464 on cpu 0:
 task_avdcache_search security/selinux/hooks.c:3146 [inline]
 selinux_inode_permission+0x334/0x740 security/selinux/hooks.c:3225
 security_inode_permission+0x6d/0xb0 security/security.c:2363
 inode_permission+0x106/0x310 fs/namei.c:601
 may_lookup fs/namei.c:1858 [inline]
 link_path_walk+0x162/0x900 fs/namei.c:2467
 path_openat+0x1de/0x2170 fs/namei.c:4130
 do_filp_open+0x109/0x230 fs/namei.c:4161
 io_openat2+0x272/0x390 io_uring/openclose.c:143
 io_openat+0x1b/0x30 io_uring/openclose.c:180
 __io_issue_sqe+0xfe/0x2e0 io_uring/io_uring.c:1824
 io_issue_sqe+0x56/0xa80 io_uring/io_uring.c:1847
 io_wq_submit_work+0x3f7/0x5f0 io_uring/io_uring.c:1959
 io_worker_handle_work+0x44e/0x9b0 io_uring/io-wq.c:650
 io_wq_worker+0x22e/0x860 io_uring/io-wq.c:704
 ret_from_fork+0x122/0x1b0 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

write to 0xffff8881283aec20 of 4 bytes by task 7462 on cpu 1:
 task_avdcache_search security/selinux/hooks.c:3150 [inline]
 selinux_inode_permission+0x3ac/0x740 security/selinux/hooks.c:3225
 security_inode_permission+0x6d/0xb0 security/security.c:2363
 inode_permission+0x106/0x310 fs/namei.c:601
 may_lookup fs/namei.c:1858 [inline]
 link_path_walk+0x162/0x900 fs/namei.c:2467
 path_openat+0x1de/0x2170 fs/namei.c:4130
 do_filp_open+0x109/0x230 fs/namei.c:4161
 io_openat2+0x272/0x390 io_uring/openclose.c:143
 io_openat+0x1b/0x30 io_uring/openclose.c:180
 __io_issue_sqe+0xfe/0x2e0 io_uring/io_uring.c:1824
 io_issue_sqe+0x56/0xa80 io_uring/io_uring.c:1847
 io_queue_sqe io_uring/io_uring.c:2074 [inline]
 io_submit_sqe io_uring/io_uring.c:2334 [inline]
 io_submit_sqes+0x675/0x1060 io_uring/io_uring.c:2447
 __do_sys_io_uring_enter io_uring/io_uring.c:3514 [inline]
 __se_sys_io_uring_enter+0x1c1/0x1b70 io_uring/io_uring.c:3453
 __x64_sys_io_uring_enter+0x78/0x90 io_uring/io_uring.c:3453
 x64_sys_call+0x2df0/0x3000 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: 0x00000003 -> 0x00000002

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 7462 Comm: syz.3.925 Not tainted syzkaller #0 PREEMPT(voluntary) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
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