Reproduceable freeze with quotas enabled

[Attila Nagy]

Hello,

I have an "easily" (at least to me) reproduceable freeze with both 
6-STABLE and 7-CURRENT on an amd64 SMP machine.

What I do is simply copy a lot of directories, files and symlinks with 
different uids from another machine to this one, using rsync.

With quotas enabled it freezes constantly, without quotas it doesn't.

I have MP_WATCHDOG enabled (the kernel config is the default GENERIC+SMP 
with debuggers and MP_WATCHDOG only) so after the freeze it drops me 
into the debugger in which I can see the following:

FreeBSD/amd64 (helen) (ttyv0)

login: Watchdog timer: 3
Watchdog timer: 2
Watchdog timer: 1
Watchdog timer: 0
Watchdog firing!
NMI ... going to debugger
[thread pid 157 tid 100143 ]
Stopped at      vinactive+0x83: jz      0x365245a9
db> bt
Tracing pid 157 tid 100143 td 0xffffff007b9c14c0
vinactive() at vinactive+0x83
vput() at vput+0x1cf
qsync() at qsync+0x260
ffs_sync() at ffs_sync+0x159
sync_fsync() at sync_fsync+0x191
VOP_FSYNC_APV() at VOP_FSYNC_APV+0x3d
sched_sync() at sched_sync+0x428
fork_exit() at fork_exit+0x86
fork_trampoline() at fork_trampoline+0xe
--- trap 0, rip = 0, rsp = 0xffffffffb2029d00, rbp = 0 ---
db> ps
   157 ffffff007b9489c0    0     0     0 0000204 [CPU 0] syncer

Any ideas?

Thanks,
-- 
Attila Nagy                                   e-mail: Attila.Nagy at fsn.hu
Free Software Network (FSN.HU)                 phone: +3630 306 6758
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