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loop2: detected capacity change from 0 to 512 ================================================================== BUG: KCSAN: data-race in fsnotify_detach_mark / fsnotify_handle_inode_event write to 0xffff888103f05e54 of 4 bytes by task 3700 on cpu 1: fsnotify_detach_mark+0xba/0x160 fs/notify/mark.c:554 fsnotify_destroy_mark+0x70/0x150 fs/notify/mark.c:596 __do_sys_inotify_rm_watch fs/notify/inotify/inotify_user.c:805 [inline] __se_sys_inotify_rm_watch+0xe8/0x170 fs/notify/inotify/inotify_user.c:786 __x64_sys_inotify_rm_watch+0x31/0x40 fs/notify/inotify/inotify_user.c:786 x64_sys_call+0x1fe9/0x2fb0 arch/x86/include/generated/asm/syscalls_64.h:256 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 0xffff888103f05e54 of 4 bytes by task 5761 on cpu 0: fsnotify_handle_inode_event+0x125/0x220 fs/notify/fsnotify.c:313 fsnotify_handle_event fs/notify/fsnotify.c:376 [inline] send_to_group fs/notify/fsnotify.c:424 [inline] fsnotify+0x13c9/0x14b0 fs/notify/fsnotify.c:641 __fsnotify_parent+0x2ed/0x330 fs/notify/fsnotify.c:287 fsnotify_parent include/linux/fsnotify.h:96 [inline] fsnotify_path include/linux/fsnotify.h:113 [inline] fsnotify_file include/linux/fsnotify.h:127 [inline] fsnotify_close include/linux/fsnotify.h:482 [inline] __fput+0x1de/0x650 fs/file_table.c:451 fput_close_sync+0x6e/0x120 fs/file_table.c:570 __do_sys_close fs/open.c:1589 [inline] __se_sys_close fs/open.c:1574 [inline] __x64_sys_close+0x56/0xf0 fs/open.c:1574 x64_sys_call+0x2747/0x2fb0 arch/x86/include/generated/asm/syscalls_64.h:4 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 -> 0x00000000 Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 5761 Comm: syz.2.576 Not tainted 6.16.0-rc5-syzkaller-00224-g379f604cc3dc #0 PREEMPT(voluntary) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 ================================================================== EXT4-fs (loop2): 1 orphan inode deleted EXT4-fs (loop2): mounted filesystem 00000000-0000-0000-0000-000000000000 r/w without journal. Quota mode: writeback.
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2025/07/12 09:03 | upstream | 379f604cc3dc | 3cda49cf | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in fsnotify_detach_mark / fsnotify_handle_inode_event | ||
2025/06/30 08:24 | upstream | d0b3b7b22dfa | fc9d8ee5 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in fsnotify_detach_mark / fsnotify_handle_inode_event | ||
2025/06/27 17:47 | upstream | 67a993863163 | 803ce19b | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in fsnotify_detach_mark / fsnotify_handle_inode_event | ||
2025/06/25 03:37 | upstream | 7595b66ae9de | 26d77996 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in fsnotify_detach_mark / fsnotify_handle_inode_event | ||
2025/05/29 06:49 | upstream | 90b83efa6701 | 3d2f584d | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in fsnotify_detach_mark / fsnotify_handle_inode_event |