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Bug #3634

open

kernel panic, bad mutex, similar to Bug #1873

Added by Denis Kozadaev over 9 years ago.

Status:
New
Priority:
Normal
Assignee:
-
Category:
-
Start date:
2013-03-17
Due date:
% Done:

0%

Estimated time:
Difficulty:
Medium
Tags:
needs-triage
Gerrit CR:

Description

I have no ideas and comments why it was, just some info from mdb:

::panicinfo

cpu 0
thread ffffff01991b6460
message mutex_enter: bad mutex, lp=ffffff0193807e00 owner=deadbeefdeadbee8 thread=ffffff01991b6460

ffffff0193807e00::whatis

ffffff0193807e00 is freed from vn_cache:
ADDR BUFADDR TIMESTAMP THREAD
CACHE LASTLOG CONTENTS
ffffff019b74aa88 ffffff0193807e00 16c7a39f31d ffffff01b26247c0
ffffff0193345848 ffffff01899dd300 ffffff01902e5120
kmem_cache_free_debug+0x12d
kmem_cache_free+0xff
vn_free+0xcd
i_sdev_node_dtor+0x2a
kmem_cache_free_debug+0x1ea
kmem_cache_free+0xff
sdev_nodedestroy+0x133
sdev_dirdelete+0x91
sdev_cache_delete+0x32
sdev_cache_update+0x79
devname_lookup_func+0x4d9
devvt_lookup+0x87
fop_lookup+0xf0
lookuppnvp+0x39f
lookuppnatcred+0x118

::stack

vpanic()
mutex_panic+0x73(fffffffffb986520, ffffff0193807e00)
mutex_vector_enter+0x481(ffffff0193807e00)
devname_inactive_func+0x4f(ffffff0193807e00, ffffff01abc5c778, 0)
sdev_inactive+0x20(ffffff0193807e00, ffffff01abc5c778, 0)
fop_inactive+0xb1(ffffff0193807e00, ffffff01abc5c778, 0)
vn_rele+0x58(ffffff0193807e00)
devname_lookup_func+0xba2(ffffff01949cec10, ffffff00069379c0, ffffff0006937990, ffffff01abc5c778, fffffffffb9b8784, 8)
devvt_lookup+0x87(ffffff01949cbd00, ffffff00069379c0, ffffff0006937990, ffffff0006937c10, 0, ffffff0193322800)
fop_lookup+0xf0(ffffff01949cbd00, ffffff00069379c0, ffffff0006937990, ffffff0006937c10, 0, ffffff0193322800)
lookuppnvp+0x39f(ffffff0006937c10, 0, 1, 0, ffffff0006937e00, ffffff0193322800)
lookuppnatcred+0x118(ffffff0006937c10, 0, 1, 0, ffffff0006937e00, 0)
lookupnameatcred+0x97(fe9a4094, 0, 1, 0, ffffff0006937e00, 0)
lookupnameat+0x6b(fe9a4094, 0, 1, 0, ffffff0006937e00, 0)
cstatat_getvp+0x11e(ffd19553, fe9a4094, 1, ffffff0006937e00, ffffff0006937e08)
cstatat32+0x5d(ffd19553, fe9a4094, 803bbb0, 0, 10)
fstatat32+0x4c(ffd19553, fe9a4094, 803bbb0, 0)
stat32+0x25(fe9a4094, 803bbb0)
sys_syscall32+0x1f7()

The dump is also available:
http://silversoft.net/~denis/vmdump.8

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