[Bug 207534] LOR in UFS on FreeBSD 10.3-BETA3 @ sys_rmdir

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=207534

            Bug ID: 207534
           Summary: LOR in UFS on FreeBSD 10.3-BETA3 @ sys_rmdir
           Product: Base System
           Version: 10.3-BETA2
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: op at hardenedbsd.org

[25] --- syscall (95, FreeBSD ELF64, sys_fsync), rip = 0x243328448ca, rsp =
0x67f303cb9a58, rbp = 0x67f303cbab00 ---
[31] wlan0: link state changed to UP
[133] lock order reversal:
[133]  1st 0xfffffe03deaef890 bufwait (bufwait) @
/usr/src/sys/kern/vfs_bio.c:3130
[133]  2nd 0xfffff80047113800 dirhash (dirhash) @
/usr/src/sys/ufs/ufs/ufs_dirhash.c:280
[133] KDB: stack backtrace:
[133] db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame
0xfffffe04656e94b0
[133] kdb_backtrace() at kdb_backtrace+0x39/frame 0xfffffe04656e9560
[133] witness_checkorder() at witness_checkorder+0xe12/frame 0xfffffe04656e95f0
[133] _sx_xlock() at _sx_xlock+0x71/frame 0xfffffe04656e9630
[133] ufsdirhash_remove() at ufsdirhash_remove+0x37/frame 0xfffffe04656e9660
[133] ufs_dirremove() at ufs_dirremove+0x121/frame 0xfffffe04656e96c0
[133] ufs_rmdir() at ufs_rmdir+0xdb/frame 0xfffffe04656e9700
[133] VOP_RMDIR_APV() at VOP_RMDIR_APV+0xd1/frame 0xfffffe04656e9730
[133] kern_rmdirat() at kern_rmdirat+0x1b9/frame 0xfffffe04656e98a0
[133] amd64_syscall() at amd64_syscall+0x2a8/frame 0xfffffe04656e99b0
[133] Xfast_syscall() at Xfast_syscall+0xfb/frame 0xfffffe04656e99b0
[133] --- syscall (137, FreeBSD ELF64, sys_rmdir), rip = 0x32e83ae8a8a, rsp =
0x7e5ce0f8ccc8, rbp = 0x7e5ce0f8ccf0 ---

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