04.12.2012 00:41, Konstantin Belousov:
Please try the patch below. It might give an immediate relief, but still
there are many offenders in the backtrace.
I'm having almost the same issue and the patch doesn't work for me.
Trying to mount root from zfs:limb0 []...
Fatal double fault:
eip = 0x835a6bce
esp = 0x875c2fd4
ebp = 0x875c3018
cpuid = 0; apic id = 00
panic: double fault
cpuid = 0
KDB: stack backtrace:
db_trace_self_wrapper(8380283b,20646920,3030203d,3831000a,a3a000a,...)
at db_trace_self_wrapper+0x36/frame 0x83a10f10
kdb_backtrace(8383658f,0,83837c3d,83a10fc0,0,...) at
kdb_backtrace+0x30/frame 0x83a10f70
panic(83837c3d,0,0,0,875c3018,...) at panic+0x1bc/frame 0x83a10fb4
dblfault_handler() at cpu_fetch_syscall_args/frame 0x83a10fb4
--- trap 0x17, eip = 8x835a6bce, esp = 0x875c2fd4, ebp = 0x875c3018 ---
witness_checkorder(843df808,9,8382a15c,7dd,0,...) at
witness_checkorder+0x2e/frame 0x875c3018
_mtx_lock_flags(843df808,0,8382a15c,7dd,202,...) at
_mtx_lock_flags+0x7a/frame 0x875c3040
uma_zalloc_arg(843de960,0,102,2,2,...) at uma_zalloc_arg+0x5df/franc
0x875c3090
malloc(38,83d03100,102,875c3138,83c01d1a,...) at malloc+0xe9/frame
0x875c30c0
zfs_kmem_alloc(38,102,8,83cab2fe,157,...) at zfs_kmem_alloc+0x20/frame
0x875c30d4
vdev_mirror_io_start(87e3eb20,10,B7e3eb20,1,87d3f618,...) at
vdev_mirror_io_start+0x14a/frame 0x875c3138
zio_vdev_io_start(87e3eb20,8795dbcO,87e3eb20,875c3340,200,...) at
zio_vdev_io_start+0x1a6/frame Ox875c3180
zio_execute(87e3eb20.87c8f000,880a0640,8807d400,200,...) at
zio_execute+0x103/frame 0x875c31b0
spa_load_verify_cb(87c8f000,0,880a0640,87f7b708,875c3340,...) at
spa_load_verify_cb+0x89/frame 0x875c31f0
traverse_visitbp(87f7b708,880a0640,875c3340,875c3db8,0,...) at
traverse_visitbp+0x1e6/frame 0x875c3320
traverse_dnode(87f7b708,15,0,3,O,...) at traverse_dnode+0x92/frame
0x875c337O
traverse_visitbp(87f7b6cc,880a4000,875c3520,87f7b744,83b92d10,...) at
traverse_visitbp+0xc40/frame 0x875c34a0
traverse_visitbp(87f7b744,88096000,875c3650,87f7b834,83b92d10,...) at
traverse_visitbp+0xd33/frame 0xB75c35d0
traverse_visitbp(87f7b834,88074000,875c3780,87f7b8ac,83b92d10,...) at
traverse_visitbp+0xd33/frame 0x875c3700
traverse_visitbp(87f7b8ac,8806c000,875c38b0,87f7b924,83b92d10,...) at
traverse_visitbp+0xd33/frame 0x875c3830
traverse_visitbp(87f7b924,88064000,875c39e0,87f7b99c,83b92d10,...) at
traverse_visitbp+0xd33/frame 0x875c3960
traverse_visitbp(87f7b99c,87fce000,875c3b10,87f7ba14,83b92d10,...) at
traverse_visitbp+0xd33/frame 0x875c3a90
traverse_visitbp(87f7ba14,88061040,875c3be0,875c3db8,0,...) at
traverse_visitbp+0xd33/frame 0x875c3bc0
traverse_dnode(87f7ba14,15,0,0,0,...) at traverse_dnode+0x92/frame
0x875c3c10
traverse_visitbp(0,87f8ee80,875c3d68,2,834,...) at
traverse_visitbp+0x822/frame 0x875c3d40
traverse_impl(15,0,87f8ee80,261400,0,...) at traverse_impl+0x268/frane
0x875c3df0
traverse_pool(87c8f000,261400,0,d,83bec290,...) at
traverse_pool+0x273/frame 0x875c3e90
spa_load(0,1,875c4034,83ca82f2,8,...) at spa_load+0x1d8f/frame 0x875c3fa8
spa_load(0,0,83a48934,1,14,...) at spa_load+0x114c/frame 0x875c40c0
spa_load_best(0,ffffffff,ffffffff,1,0,...) at spa_load_best+0x71/frame
0x875c3e90
spa_open_common(83ca3ca6,0,0,875c42f0,83bb9dec,...) at
spa_open_common+0x11a/frame 0x875c4174
spa_open(875c41e0,875c41dc,83ca3ca6,0,0,...) at spa_open+0x27/frame
0x875c4188
dsl_dir_open_spa(0,87d47350,83ca4039,875c4358,875c4354,...) at
dsl_dir_open_spa+0x6c/frame 0x875c42f0
dsl_dataset_hold(87d47350,87a36000,875c43a0,87a36000,87a36000,...) at
dsl_data_hold+0x3a/frame 0x875c436c
dsl_dataset_own(87d47350,0,87a3600,875c43a0,83d01e30,...) at
dsl_dataset_own+0x21/frame 0x875c4388
dmu_objset_own(87d4350,2,1,87a36000,875c43f0,...) at
dmu_objset_own+0x2a/frame 0x875c43b0
zfsvfs_create(87d47350,875c4504,83cb0b68,68e,87d47350,...) at
zfsvfs_create+0x4c/frame 0x875c4400
zfs_mount(87d40ce4,83cb5Bd0,87d46300,87957500,8384fd28,...) at
zfs_mount+0x4a9/frame 0x875c4630
vfs_donmount(8795dbc0,4000,0,875c48b8,87d46380,...) at
vfs_donmount+0xc94/frame 0x875c48a0
kernel_mount(87d473d0,4000,0,0,839de044,...) at kernel_mount+0x6b/frame
0x875c48e0
parse_mount(87d47400,8385a800,0,1,0,...) at parse_mount+0x622/frame
0x875c49f8
vfs_mountroot(83a491c4,4,837f68a2,2ba,0,...) at
vfs_mountroot+0x6f1/frame 0x875c4c60
start_init(0,875c4d08,837f8f83,3d8,0,...) at start_init+0x6a/frame
0x875c4ccc
fork_exit(835107b0,0,875c4d08) at fork_init+0x7c/frame 0x875c4cf4
fork_trampoline() at fork_trampoline+0x8/frame 0x875c4cf4
--- trap 0, eip = 0, esp = 0x875c4d40, ebp = O ---
KDB: enter: panic
[ thread pid 1 tid 100002 J
Stopped at kdb_enter+0x3d: movl $O,kdb_why
db>
Source pictures are at
https://picasaweb.google.com/104021007361271711472/I386ZfsDoubleFault?authuser=0&feat=directlink
just in case I missed something.
--
Sphinx of black quartz, judge my vow.
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