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================================================================== BUG: KCSAN: data-race in d_alloc_parallel / d_set_d_op write to 0xffff88812e14d180 of 4 bytes by task 4871 on cpu 1: d_set_d_op+0x17f/0x220 fs/dcache.c:1882 simple_lookup+0x78/0x90 fs/libfs.c:73 lookup_open fs/namei.c:3085 [inline] open_last_lookups fs/namei.c:3180 [inline] path_openat+0xa72/0x20a0 fs/namei.c:3368 do_filp_open+0xbd/0x1d0 fs/namei.c:3398 do_sys_openat2+0xa3/0x250 fs/open.c:1172 do_sys_open fs/open.c:1188 [inline] __do_sys_open fs/open.c:1196 [inline] __se_sys_open fs/open.c:1192 [inline] __x64_sys_open+0xe2/0x110 fs/open.c:1192 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff88812e14d180 of 4 bytes by task 21475 on cpu 0: d_in_lookup include/linux/dcache.h:363 [inline] d_wait_lookup fs/dcache.c:2528 [inline] d_alloc_parallel+0x625/0xd10 fs/dcache.c:2616 lookup_open fs/namei.c:3033 [inline] open_last_lookups fs/namei.c:3180 [inline] path_openat+0x650/0x20a0 fs/namei.c:3368 do_filp_open+0xbd/0x1d0 fs/namei.c:3398 do_sys_openat2+0xa3/0x250 fs/open.c:1172 do_sys_open fs/open.c:1188 [inline] __do_sys_open fs/open.c:1196 [inline] __se_sys_open fs/open.c:1192 [inline] __x64_sys_open+0xe2/0x110 fs/open.c:1192 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 21475 Comm: systemd-udevd Not tainted 5.11.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================
| Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021/02/01 01:00 | upstream | 6642d600b541 | fc9fd31e | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in d_alloc_parallel / d_set_d_op |