Panic in ZFS layer on 8.1-STABLE

[Andriy Gapon]

on 15/12/2010 10:28 Jeremie Le Hen said the following:
> Hi,
> 
> [ Please Cc: me when replying, as I'm not subscribed to -stable at . ]
> 
> My filer at home runs FreeBSD.  A single data RAID-1 zpool with 10~15
> datasets, two of them using compression.  Over the night, I got the
> following panic:

Thanks for the stack trace!
But where is the promised panic message? :)

I suspect that you ran out of kernel address space.
You'd probably have to tune your system and/or add more memory.
Please research this topic via mailing lists archives.

> Tracing pid 0 tid 100111 td 0x86393a00
> kdb_enter(809faa5b,809faa5b,80a12e84,cb114aec,0,...) at kdb_enter+0x3a
> panic(80a12e84,1c000,2e3e8000,80a12e7e,7d0,...) at panic+0x131
> kmem_malloc(8169008c,1c000,2,cb114b6c,80909a99,...) at kmem_malloc+0x285
> page_alloc(0,1c000,cb114b5f,2,2f0c800,...) at page_alloc+0x27
> uma_large_malloc(1c000,2,0,8609b3f0,30,...) at uma_large_malloc+0x4a
> malloc(1c000,860b2120,2,cb114bb0,8601d36d,...) at malloc+0x7c
> zfs_kmem_alloc(1c000,2,cb114bf0,8601f77b,1c000,...) at
> zfs_kmem_alloc+0x20
> zio_buf_alloc(1c000,cb114c30,86008817,92c33bd0,cb114bf0,...) at
> zio_buf_alloc+0x44
> zio_compress_data(3,b4264000,20000,0,cb114c58,...) at
> zio_compress_data+0x8b
> zio_write_bp_init(92c339c0,92bba254,cb114c80,8071a322,cb114ca0,...) at
> zio_write_bp_init+0xff
> zio_execute(92c339c0,8638e0c0,cb114cd0,8071c5f4,92c33c14,...) at
> zio_execute+0xab
> taskq_run_safe(92c33c14,1,0,80a8429c,0,...) at taskq_run_safe+0x13
> taskqueue_run(8638e0c0,8638e0d8,0,809ef596,0,...) at taskqueue_run+0x15d
> taskqueue_thread_loop(8638c3d0,cb114d38,8071c72a,0,cb114d20,...) at
> taskqueue_thread_loop+0xbd
> fork_exit(8071c72a,8638c3d0,cb114d38) at fork_exit+0x91
> fork_trampoline() at fork_trampoline+0x8       
> 
> I couldn't get a crash dump, sorry.  However, I'm still using the same
> kernel so I can probably use addr2line(1) if you need it.

-- 
Andriy Gapon