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================================================================== BUG: KCSAN: data-race in d_alloc_parallel / d_set_d_op read-write to 0xffff888106ca06c0 of 4 bytes by task 5929 on cpu 1: d_set_d_op+0xfb/0x1f0 fs/dcache.c:1804 proc_ns_instantiate fs/proc/namespaces.c:114 [inline] proc_ns_dir_lookup+0x180/0x220 fs/proc/namespaces.c:172 lookup_open fs/namei.c:3573 [inline] open_last_lookups fs/namei.c:3694 [inline] path_openat+0xd40/0x1fa0 fs/namei.c:3930 do_filp_open+0xf7/0x200 fs/namei.c:3960 do_sys_openat2+0xab/0x120 fs/open.c:1415 do_sys_open fs/open.c:1430 [inline] __do_sys_openat fs/open.c:1446 [inline] __se_sys_openat fs/open.c:1441 [inline] __x64_sys_openat+0xf3/0x120 fs/open.c:1441 x64_sys_call+0x1025/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:258 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f read to 0xffff888106ca06c0 of 4 bytes by task 5928 on cpu 0: d_in_lookup include/linux/dcache.h:378 [inline] d_wait_lookup fs/dcache.c:2459 [inline] d_alloc_parallel+0x60b/0xc80 fs/dcache.c:2547 lookup_open fs/namei.c:3517 [inline] open_last_lookups fs/namei.c:3694 [inline] path_openat+0x6c8/0x1fa0 fs/namei.c:3930 do_filp_open+0xf7/0x200 fs/namei.c:3960 do_sys_openat2+0xab/0x120 fs/open.c:1415 do_sys_open fs/open.c:1430 [inline] __do_sys_openat fs/open.c:1446 [inline] __se_sys_openat fs/open.c:1441 [inline] __x64_sys_openat+0xf3/0x120 fs/open.c:1441 x64_sys_call+0x1025/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:258 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f value changed: 0x10000000 -> 0x1000000c Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 5928 Comm: syz.2.803 Not tainted 6.12.0-rc1-syzkaller-00257-g2f91ff27b0ee #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 ==================================================================
| Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2024/10/05 03:32 | upstream | 2f91ff27b0ee | d7906eff | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in d_alloc_parallel / d_set_d_op |