syzbot


KCSAN: data-race in selinux_inode_permission / selinux_inode_permission

Status: moderation: reported on 2025/05/28 19:36
Subsystems: selinux
[Documentation on labels]
Reported-by: syzbot+48266d06935c7f0ac766@syzkaller.appspotmail.com
First crash: 148d, last: 1h32m

Sample crash report:
==================================================================
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
==================================================================

Crashes (278):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/10/23 22:12 upstream 266ee584e55e c0460fcd .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/10/23 11:25 upstream 43e9ad0c55a3 c0460fcd .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/10/22 21:19 upstream dd72c8fcf6d3 c0460fcd .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/10/22 11:59 upstream 552c50713f27 252fbbad .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/10/22 01:01 upstream 552c50713f27 9832ed61 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/10/21 16:48 upstream 6548d364a3e8 9832ed61 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/10/20 19:49 upstream 211ddde0823f d422939c .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/10/20 11:38 upstream 211ddde0823f 1c8c8cd8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/10/19 17:13 upstream d9043c79ba68 1c8c8cd8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/10/19 08:41 upstream 1c64efcb083c 1c8c8cd8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/10/18 13:37 upstream f406055cb18c 1c8c8cd8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/10/18 02:07 upstream cf1ea8854e4f 1c8c8cd8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/10/17 17:00 upstream cf1ea8854e4f 7adf5298 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/10/17 02:34 upstream 98ac9cc4b445 19568248 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/10/16 16:52 upstream 7ea30958b305 19568248 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/10/15 17:22 upstream 1f4a222b0e33 19568248 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/10/14 22:43 upstream 9b332cece987 b6605ba8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/10/13 23:59 upstream 3a8660878839 b6605ba8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/10/13 09:44 upstream 3a8660878839 ff1712fe .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/10/12 20:45 upstream 8765f467912f ff1712fe .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/10/12 03:46 upstream 67029a49db6c ff1712fe .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/10/11 13:17 upstream 0739473694c4 ff1712fe .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/10/11 07:27 upstream 917167ed1211 ff1712fe .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/10/10 07:36 upstream 5472d60c129f ff1712fe .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/10/09 20:10 upstream ec714e371f22 7e2882b3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/10/09 10:14 upstream cd5a0afbdf80 7e2882b3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/10/08 21:16 upstream 0d97f2067c16 7e2882b3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/10/08 08:49 upstream 971199ad2a0f 7e2882b3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/10/07 19:50 upstream 971199ad2a0f 8ef35d49 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/10/07 07:16 upstream c746c3b51698 8ef35d49 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/10/05 11:37 upstream 6093a688a07d 49379ee0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/10/05 01:04 upstream d104e3d17f7b 49379ee0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/10/04 09:40 upstream cbf33b8e0b36 49379ee0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/10/04 01:25 upstream 9b0d551bcc05 49379ee0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/10/03 06:43 upstream e406d57be7bd 49379ee0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/10/02 13:55 upstream 7f7072574127 49379ee0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/10/01 18:00 upstream 50c19e20ed2e a1859138 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/10/01 05:27 upstream 50c19e20ed2e 65a0eece .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/10/01 02:20 upstream 30d4efb2f5a5 65a0eece .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/09/30 02:04 upstream 1896ce8eb6c6 86341da6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/09/29 12:11 upstream e5f0a698b34e 86341da6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/09/28 20:04 upstream 8f9736633f8c 001c9061 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/09/28 09:31 upstream 51a24b7deaae 001c9061 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/09/27 18:22 upstream fec734e8d564 001c9061 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/09/27 00:57 upstream 083fc6d7fa0d 001c9061 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/09/26 19:36 upstream 4ff71af020ae 001c9061 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/09/25 22:40 upstream 4ff71af020ae 0abd0691 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
2025/05/28 19:35 upstream 3d413f0cfd7e 3d2f584d .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-kcsan-gce KCSAN: data-race in selinux_inode_permission / selinux_inode_permission
* Struck through repros no longer work on HEAD.