upstream test error: KCSAN: data-race in d_delete / lookup

ID	Workflow	Result	Correct	Bug	Created	Started	Finished	Revision	Error
f48fc733-7650-4368-89af-32e8ec5d31a2	assessment-security		💥	upstream test error: KCSAN: data-race in d_delete / lookup_fast	2026/05/14 15:02	2026/05/14 15:02	2026/05/14 15:03	6ccb967e465e832a7bfd7a116ad00d52a0923a5d	failed to run ["git" "pull" "origin" "HEAD" "--depth=1" "--allow-unrelated-histories"]: exit status 128 From /app/workdir/repo/linux * branch HEAD -> FETCH_HEAD Updating files: ... truncated to first 200 bytes; open job for full error

================================================================== BUG: KCSAN: data-race in d_delete / lookup_fast read-write to 0xffff888100696000 of 4 bytes by task 3987 on cpu 1: d_delete+0xbe/0xe0 fs/dcache.c:2529 d_delete_notify+0x32/0x100 include/linux/fsnotify.h:375 vfs_unlink+0x289/0x490 fs/namei.c:5485 filename_unlinkat+0x1e2/0x410 fs/namei.c:5540 __do_sys_unlink fs/namei.c:5575 [inline] __se_sys_unlink+0x2b/0xe0 fs/namei.c:5572 __x64_sys_unlink+0x1f/0x30 fs/namei.c:5572 x64_sys_call+0x2eb6/0x3020 arch/x86/include/generated/asm/syscalls_64.h:88 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x12c/0x370 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f read to 0xffff888100696000 of 4 bytes by task 2998 on cpu 0: d_revalidate fs/namei.c:1029 [inline] lookup_fast+0xf0/0x320 fs/namei.c:1864 walk_component fs/namei.c:2275 [inline] lookup_last fs/namei.c:2780 [inline] path_lookupat+0x15c/0x500 fs/namei.c:2804 filename_lookup+0x190/0x390 fs/namei.c:2833 do_readlinkat+0x74/0x2f0 fs/stat.c:571 __do_sys_readlink fs/stat.c:605 [inline] __se_sys_readlink fs/stat.c:602 [inline] __x64_sys_readlink+0x47/0x60 fs/stat.c:602 x64_sys_call+0x2b51/0x3020 arch/x86/include/generated/asm/syscalls_64.h:90 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x12c/0x370 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f value changed: 0x00300180 -> 0x00004080 Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 2998 Comm: udevd Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 ==================================================================

Crashes (1):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2026/03/28 14:06	upstream	be762d8b6dd7	b5ceaad2	.config	console log	report				[disk image] [vmlinux] [kernel image]	ci2-upstream-kcsan-gce	upstream test error: KCSAN: data-race in d_delete / lookup_fast

Crashes (1):

Assets (help?)