[issue2168] DFBSD v2.13.0.126.g6e2ab - i386 - Panic while installing over UFS (under QEMU-KVM)

["Antonio Huete Jimenez \(via DragonFly issue tracker\)" <sinknull@xxxxxxxxxxxxxxxxxxxxx>]

New submission from Antonio Huete Jimenez <tuxillo@quantumachine.net>:

Hi,

Trying to install an i386 dfly guest under qemu-kvm (KUbuntu 11), and a panic 
appears without finishing up the installation:


Warning: excessive fssync iteration
pSECONDARY PANIC ON CPU 1 THREAD 0xc07fe428
anic: td_critcount is/would-go negative! 0xcfc28c60 -1
cpuid = 0
Trace beginning at frame 0xd073f968
panic(ffffffff,0,c06f0100,d073f99c,cfc28c60) at panic+0x198
panic(c06f0100,cfc28c60,ffffffff,d073f9b0,c0518dd3) at panic+0x198
lwkt_remove_tdallq(2000,d073f9c4,c051972b,c3194f00,d073fa48) at 
lwkt_remove_tdallq
free_lock(c3194f00,d073fa48,c3194f00,d073fa08,c051e4ec) at free_lock+0x3a
acquire_lock(c0788de0,cf,5f5e100,0,0) at acquire_lock+0x14
softdep_disk_io_initiation(c3194f00,c07b7760,6f8,d073fa40,c037122b) at 
softdep_disk_io_initiation+0xbd
devfs_spec_strategy(d073fa48,c0790a28,d29ff0a0,0,40553a2b) at 
devfs_spec_strategy+0x37
vop_strategy(d29ff0a0,d3123278,c3194f80,c1573b34,c1573b34) at vop_strategy+0x82
vn_strategy(d3123278,c3194f80,0,d073fb04,c03bfbd7) at vn_strategy+0xdb
ufs_strategy(d073faec,d073fb14,c03e668e,d073faec,c0790a28) at ufs_strategy+0xfa
ufs_vnoperate(d073faec,c0790a28,d29e3440,c058028e,c1573b34) at 
ufs_vnoperate+0x16
vop_strategy(d29e3440,d3a0d638,c3194f30,0,0) at vop_strategy+0x56
vn_strategy(d3a0d638,c3194f30,d073fb60,c03c1104,c3195118) at vn_strategy+0xdb
bawrite(c3194f00,d073fbc8,d3a0d638,c3194f00,c3194f00) at bawrite+0xd0
vfsync_bp(c3194f00,d073fbc8,0,0,0) at vfsync_bp+0x17d
buf_rb_tree_RB_SCAN(d3a0d69c,c03d6644,c03d8142,d073fbc8,d3a0d71c) at 
buf_rb_tree_RB_SCAN+0xc0
vfsync(d3a0d638,6,4,c0522360,c051a94f) at vfsync+0x9f
ffs_fsync(d073fc24,c07909c8,d29e3440,c03e42a5,d3a0d6f8) at ffs_fsync+0x6b
vop_fsync(d29e3440,d3a0d638,6,0,d3a0d638) at vop_fsync+0x55
ffs_sync_scan2(d29a48e0,d3a0d638,d073fccc,d377e950,26b) at ffs_sync_scan2+0x54
vmntvnodescan(d29a48e0,11,c05202e0,c0520d51,d073fccc) at vmntvnodescan+0x1a7
ffs_sync(d29a48e0,6,d29a48e0,201000,c087e060) at ffs_sync+0x86
vfs_sync(d29a48e0,6,d2f76af8,c07906e0,d073fd58) at vfs_sync+0x42
sync_fsync(d073fd2c,c07909c8,c07906e0,c03da3ac,d2f76af8) at sync_fsync+0x85
vop_fsync(c07906e0,d2f76af8,4,0,4e20) at vop_fsync+0x55
syncer_thread(0,0,0,0,0) at syncer_thread+0xbb
kthread_exit() at kthread_exit
Debugger("panic")

i386 coredump available on demand. x64 panics also but I wasn't able to 
determine whether it is the same or not.

Cheers,
Antonio Huete

----------
messages: 10248
nosy: tuxillo
priority: bug
status: unread
title: DFBSD v2.13.0.126.g6e2ab - i386 - Panic while installing over UFS (under QEMU-KVM)

_____________________________________________________
DragonFly issue tracker <bugs@lists.dragonflybsd.org>
<http://bugs.dragonflybsd.org/issue2168>
_____________________________________________________