On 02/05/2020 10:08, Grzegorz Junka wrote:
I am compiling some packages with poudriere on 13-current kernel. I
noticed some strange messages printed into the terminal and dmesg:
lock order reversal:
1st 0xfffff8010ca78250 zfs (zfs) @ /usr/src-13/sys/kern/vfs_mount.c:1005
2nd 0xfffff8010cd37250 devfs (devfs) @
/usr/src-13/sys/kern/vfs_mount.c:1016
stack backtrace:
#0 0xffffffff80c2d5f1 at witness_debugger+0x71
#1 0xffffffff80b92f18 at lockmgr_lock_flags+0x188
#2 0xffffffff80cae744 at _vn_lock+0x54
#3 0xffffffff80c90756 at vfs_domount+0xd16
#4 0xffffffff80c8efd1 at vfs_donmount+0x871
#5 0xffffffff80c8e729 at sys_nmount+0x69
#6 0xffffffff81060c40 at amd64_syscall+0x140
#7 0xffffffff810370a0 at fast_syscall_common+0x101
pid 17216 (conftest), jid 6, uid 0: exited on signal 11
pid 51159 (conftest), jid 6, uid 0: exited on signal 11
pid 23833 (conftest), jid 3, uid 0: exited on signal 11
pid 4916 (conftest), jid 3, uid 0: exited on signal 11
(... then there is a bunch of similar ones, then ...)
pid 14504 (conftest), jid 3, uid 0: exited on signal 11
pid 27466 (conftest), jid 6, uid 0: exited on signal 11
pid 43297 (conftest), jid 5, uid 0: exited on signal 11
lock order reversal:
1st 0xfffffe00bc68c030 filedesc structure (filedesc structure) @
/usr/src-13/sys/kern/sys_generic.c:1557
2nd 0xfffff803baeddbd8 tmpfs (tmpfs) @
/usr/src-13/sys/kern/vfs_vnops.c:1553
stack backtrace:
#0 0xffffffff80c2d5f1 at witness_debugger+0x71
#1 0xffffffff80b946b5 at lockmgr_xlock+0x55
#2 0xffffffff80cae744 at _vn_lock+0x54
#3 0xffffffff80cad0da at vn_poll+0x3a
#4 0xffffffff80c33e19 at kern_poll+0x419
#5 0xffffffff80c340df at sys_ppoll+0x6f
#6 0xffffffff81060c40 at amd64_syscall+0x140
#7 0xffffffff810370a0 at fast_syscall_common+0x101
pid 37533 (conftest), jid 5, uid 0: exited on signal 11
pid 43474 (conftest), jid 5, uid 0: exited on signal 11
I restarted the compilation and again seeing similar LORs:
lock order reversal:
1st 0xfffff80115d32068 zfs (zfs) @ /usr/src-13/sys/kern/vfs_mount.c:1005
2nd 0xfffff800243d6808 devfs (devfs) @
/usr/src-13/sys/kern/vfs_mount.c:1016
stack backtrace:
#0 0xffffffff80c2d5f1 at witness_debugger+0x71
#1 0xffffffff80b92f18 at lockmgr_lock_flags+0x188
#2 0xffffffff80cae744 at _vn_lock+0x54
#3 0xffffffff80c90756 at vfs_domount+0xd16
#4 0xffffffff80c8efd1 at vfs_donmount+0x871
#5 0xffffffff80c8e729 at sys_nmount+0x69
#6 0xffffffff81060c40 at amd64_syscall+0x140
#7 0xffffffff810370a0 at fast_syscall_common+0x101
lock order reversal:
1st 0xfffffe00a7aa49b0 filedesc structure (filedesc structure) @
/usr/src-13/sys/kern/sys_generic.c:1557
2nd 0xfffff800aa2cdbd8 zfs (zfs) @ /usr/src-13/sys/kern/vfs_vnops.c:1553
stack backtrace:
#0 0xffffffff80c2d5f1 at witness_debugger+0x71
#1 0xffffffff80b946b5 at lockmgr_xlock+0x55
#2 0xffffffff80cae744 at _vn_lock+0x54
#3 0xffffffff80cad0da at vn_poll+0x3a
#4 0xffffffff80c33e19 at kern_poll+0x419
#5 0xffffffff80c339f0 at sys_poll+0x50
#6 0xffffffff81060c40 at amd64_syscall+0x140
#7 0xffffffff810370a0 at fast_syscall_common+0x101
The page to report still returns 404 :)
--
GrzegorzJ
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