Re: zfs: Fatal trap 12: page fault while in kernel mode

Hi,

On Mon, Jul 27, 2009 at 09:58:30PM +0200, O. Hartmann wrote:
[...]
> >> db> bt
> >> Tracing pid 36 tid 100062 td 0x87166480
> >> _sx_xlock(3c,0,874aa28d,70f,8ae9a9f8,...) at _sx_xlock+0x43
> >> dmu_buf_update_user(0,8ae9a9f8,0,0,0,...) at dmu_buf_update_user+0x35
> >> zfs_znode_dmu_fini(8ae9a9f8,874b312d,1114,110b,879ab000,...) at zfs_znode_dmu_f3
> >> zfs_freebsd_reclaim(fcd29c3c,1,0,8ec63754,fcd29c60,...) at zfs_freebsd_reclaim+0
> >> VOP_RECLAIM_APV(874b65a0,fcd29c3c,0,0,8ec637c8,...) at VOP_RECLAIM_APV+0xa5
> >> vgonel(8ec637c8,0,80c77037,386,0,...) at vgonel+0x1a4
> >> vnlru_free(80f2a0f0,0,80c77037,300,3e8,...) at vnlru_free+0x2d5
> >> vnlru_proc(0,fcd29d38,80c652bc,33e,871932a8,...) at vnlru_proc+0x80
> >> fork_exit(8090d960,0,fcd29d38) at fork_exit+0xb8
> >> fork_trampoline() at fork_trampoline+0x8
> >> --- trap 0, eip = 0, esp = 0xfcd29d70, ebp = 0 ---
> >> db> 
> 
> I see a similar problem on two SMP boxes (is your SMP?), but in my case,
> it seems not to be ZFS related although I also use ZFS as /home filesystem

no real SMP, its only an old P4 with hyperthreading:

> CPU: Intel(R) Pentium(R) 4 CPU 3.20GHz (3192.02-MHz 686-class CPU)
> Origin = "GenuineIntel"  Id = 0xf41  Stepping = 1
> Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE>
> Features2=0x441d<SSE3,DTES64,MON,DS_CPL,CNXT-ID,xTPR>
> AMD Features=0x100000<NX>
> TSC: P-state invariant
> real memory  = 4294967296 (4096 MB)
> avail memory = 3392716800 (3235 MB)
> ACPI APIC Table: <FSC      APIC  >
> FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
> FreeBSD/SMP: 1 package(s) x 1 core(s) x 2 HTT threads

Juergen

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