[Bug 203352] KDB: stack backtrace: /usr/src/sys/kern/vfs_mount.c:1224

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=203352

            Bug ID: 203352
           Summary: KDB: stack backtrace:
                    /usr/src/sys/kern/vfs_mount.c:1224
           Product: Base System
           Version: 11.0-CURRENT
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: jarles.live at gmail.com

Hardware:
AMD AM1 Athlon 5350 (Kabini)
Mainboard MSI AM1M
8GB DDR3 RAM

Hi,

it was be necessary, to change from 10.2 to 11-CURRENT, Xorg wasnt working with
vesa driver. In 11-Current now it works with vesa. The radeonkms module isnt
ready for my APU with radeon 8400hd, so vesa.
11-Current is working without systemcrashes, but i get hints in dmesg and
reboot like this:
lock order reversal:
 1st 0xfffff800317f85f0 ufs (ufs) @ /usr/src/sys/kern/vfs_mount.c:1224
 2nd 0xfffff800317bc068 syncer (syncer) @ /usr/src/sys/kern/vfs_subr.c:2367
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe021442c520
witness_checkorder() at witness_checkorder+0xe7a/frame 0xfffffe021442c5a0
__lockmgr_args() at __lockmgr_args+0xa5c/frame 0xfffffe021442c6d0
vop_stdlock() at vop_stdlock+0x3c/frame 0xfffffe021442c6f0
VOP_LOCK1_APV() at VOP_LOCK1_APV+0xfc/frame 0xfffffe021442c720
_vn_lock() at _vn_lock+0x9a/frame 0xfffffe021442c790
vputx() at vputx+0x26d/frame 0xfffffe021442c7f0
dounmount() at dounmount+0x40b/frame 0xfffffe021442c870
sys_unmount() at sys_unmount+0x3c0/frame 0xfffffe021442c9a0
amd64_syscall() at amd64_syscall+0x2e1/frame 0xfffffe021442cab0
Xfast_syscall() at Xfast_syscall+0xfb/frame 0xfffffe021442cab0
--- syscall (22, FreeBSD ELF64, sys_unmount), rip = 0x80086c97a, rsp =
0x7fffffffe258, rbp = 0x7fffffffe370 ---
lock order reversal:
 1st 0xfffff800317f85f0 ufs (ufs) @ /usr/src/sys/kern/vfs_mount.c:1224
 2nd 0xfffff800317e39a0 devfs (devfs) @ /usr/src/sys/ufs/ffs/ffs_vfsops.c:1375
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe021442c4a0
witness_checkorder() at witness_checkorder+0xe7a/frame 0xfffffe021442c520
__lockmgr_args() at __lockmgr_args+0xa5c/frame 0xfffffe021442c650
vop_stdlock() at vop_stdlock+0x3c/frame 0xfffffe021442c670
VOP_LOCK1_APV() at VOP_LOCK1_APV+0xfc/frame 0xfffffe021442c6a0
_vn_lock() at _vn_lock+0x9a/frame 0xfffffe021442c710
ffs_flushfiles() at ffs_flushfiles+0x140/frame 0xfffffe021442c780
ffs_unmount() at ffs_unmount+0x97/frame 0xfffffe021442c7f0
dounmount() at dounmount+0x529/frame 0xfffffe021442c870
sys_unmount() at sys_unmount+0x3c0/frame 0xfffffe021442c9a0
amd64_syscall() at amd64_syscall+0x2e1/frame 0xfffffe021442cab0
Xfast_syscall() at Xfast_syscall+0xfb/frame 0xfffffe021442cab0
--- syscall (22, FreeBSD ELF64, sys_unmount), rip = 0x80086c97a, rsp =
0x7fffffffe258, rbp = 0x7fffffffe370 ---

Good day,
Andreas Beck

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