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================================================================== BUG: KCSAN: data-race in d_set_mounted / fast_dput write to 0xffff888100456780 of 4 bytes by task 15658 on cpu 1: d_set_mounted+0x117/0x200 fs/dcache.c:1494 get_mountpoint+0x1c0/0x350 fs/namespace.c:755 attach_recursive_mnt+0x9a/0x1230 fs/namespace.c:2140 graft_tree fs/namespace.c:2263 [inline] do_loopback fs/namespace.c:2391 [inline] path_mount+0x1299/0x1ce0 fs/namespace.c:3229 do_mount fs/namespace.c:3248 [inline] __do_sys_mount fs/namespace.c:3456 [inline] __se_sys_mount+0x23d/0x2e0 fs/namespace.c:3433 __x64_sys_mount+0x63/0x70 fs/namespace.c:3433 do_syscall_64+0x4a/0x90 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff888100456780 of 4 bytes by task 15654 on cpu 0: fast_dput+0x14/0x1c0 fs/dcache.c:749 dput+0x26/0x360 fs/dcache.c:875 path_put fs/namei.c:546 [inline] terminate_walk+0x218/0x270 fs/namei.c:649 path_openat+0x1968/0x20b0 fs/namei.c:3495 do_filp_open+0x1b6/0x1f0 fs/namei.c:3523 do_sys_openat2+0xa3/0x250 fs/open.c:1187 do_sys_open fs/open.c:1203 [inline] __do_sys_openat fs/open.c:1219 [inline] __se_sys_openat fs/open.c:1214 [inline] __x64_sys_openat+0xef/0x110 fs/open.c:1214 do_syscall_64+0x4a/0x90 arch/x86/entry/common.c:47 entry_SYSCALL_64_after_hwframe+0x44/0xae Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 15654 Comm: syz-executor.4 Not tainted 5.13.0-rc2-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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2021/05/19 17:28 | upstream | c3d0e3fd41b7 | a343ba6b | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in d_set_mounted / fast_dput |