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================================================================== BUG: KCSAN: data-race in d_alloc_parallel / d_set_d_op read-write to 0xffff88811f314240 of 4 bytes by task 20684 on cpu 0: d_set_d_op+0xf0/0x1e0 fs/dcache.c:1932 proc_pident_instantiate+0x164/0x180 fs/proc/base.c:2625 proc_pident_lookup fs/proc/base.c:2648 [inline] proc_tgid_base_lookup+0x10c/0x180 fs/proc/base.c:3331 __lookup_slow+0x182/0x250 fs/namei.c:1701 lookup_slow+0x3c/0x60 fs/namei.c:1718 walk_component+0x23d/0x280 fs/namei.c:2014 link_path_walk+0x459/0x7a0 path_openat+0x199/0x1b30 fs/namei.c:3649 do_filp_open+0x105/0x220 fs/namei.c:3680 do_sys_openat2+0xb5/0x2a0 fs/open.c:1278 do_sys_open fs/open.c:1294 [inline] __do_sys_openat fs/open.c:1310 [inline] __se_sys_openat fs/open.c:1305 [inline] __x64_sys_openat+0xef/0x110 fs/open.c:1305 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 read to 0xffff88811f314240 of 4 bytes by task 20683 on cpu 1: d_in_lookup include/linux/dcache.h:356 [inline] d_wait_lookup fs/dcache.c:2582 [inline] d_alloc_parallel+0x655/0xcc0 fs/dcache.c:2670 __lookup_slow+0x80/0x250 fs/namei.c:1686 lookup_slow+0x3c/0x60 fs/namei.c:1718 walk_component+0x23d/0x280 fs/namei.c:2014 link_path_walk+0x459/0x7a0 path_openat+0x199/0x1b30 fs/namei.c:3649 do_filp_open+0x105/0x220 fs/namei.c:3680 do_sys_openat2+0xb5/0x2a0 fs/open.c:1278 do_sys_open fs/open.c:1294 [inline] __do_sys_openat fs/open.c:1310 [inline] __se_sys_openat fs/open.c:1305 [inline] __x64_sys_openat+0xef/0x110 fs/open.c:1305 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 value changed: 0x10000000 -> 0x1000000c Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 20683 Comm: syz-executor.4 Not tainted 5.19.0-rc3-syzkaller-00043-g3abc3ae553c7-dirty #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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2022/06/23 04:59 | upstream | 3abc3ae553c7 | 912f5df7 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in d_alloc_parallel / d_set_d_op | |||
| 2022/06/02 06:31 | upstream | 8eca6b0a647a | b4bc6a3d | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in d_alloc_parallel / d_set_d_op | |||
| 2022/05/05 16:23 | upstream | a7391ad35724 | b3f09415 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in d_alloc_parallel / d_set_d_op | |||
| 2022/04/28 07:37 | upstream | 8f4dd16603ce | 8a1f1f07 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in d_alloc_parallel / d_set_d_op |