svn commit: r326200 - head/sys/kern

[Peter Holm]

On Sat, Nov 25, 2017 at 08:49:27PM +0000, Mateusz Guzik wrote:
> Author: mjg
> Date: Sat Nov 25 20:49:27 2017
> New Revision: 326200
> URL: https://svnweb.freebsd.org/changeset/base/326200
> 
> Log:
>   Add the missing lockstat check for thread lock.
> 
> Modified:
>   head/sys/kern/kern_mutex.c
> 
> Modified: head/sys/kern/kern_mutex.c
> ==============================================================================
> --- head/sys/kern/kern_mutex.c	Sat Nov 25 20:37:13 2017	(r326199)

Hi Mateusz,

Could this be yours?

spin lock 0xffffffff81ddc100 (turnstile chain) held by 0xfffff80014e57000 (tid 100277) too long
panic: spin lock held too long
cpuid = 20
time = 1511677687
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe104f86ea40
vpanic() at vpanic+0x268/frame 0xfffffe104f86eb10
kproc_shutdown() at kproc_shutdown/frame 0xfffffe104f86eb70
_mtx_lock_spin_failed() at _mtx_lock_spin_failed+0x87/frame 0xfffffe104f86eba0
_mtx_lock_spin_cookie() at _mtx_lock_spin_cookie+0x4ba/frame 0xfffffe104f86ed10
__mtx_lock_spin_flags() at __mtx_lock_spin_flags+0x21f/frame 0xfffffe104f86edb0
turnstile_trywait() at turnstile_trywait+0x32/frame 0xfffffe104f86edd0
__rw_rlock_hard() at __rw_rlock_hard+0x118/frame 0xfffffe104f86ee60
__rw_rlock_int() at __rw_rlock_int+0xd5/frame 0xfffffe104f86ee90
getblk() at getblk+0xdb/frame 0xfffffe104f86ef40
breadn_flags() at breadn_flags+0x6e/frame 0xfffffe104f86eff0
ffs_getcg() at ffs_getcg+0x20d/frame 0xfffffe104f86f0d0
ffs_nodealloccg() at ffs_nodealloccg+0xd0/frame 0xfffffe104f86f210
ffs_hashalloc() at ffs_hashalloc+0xb7/frame 0xfffffe104f86f290
ffs_valloc() at ffs_valloc+0x1c1/frame 0xfffffe104f86f390
ufs_makeinode() at ufs_makeinode+0xba/frame 0xfffffe104f86f520
ufs_create() at ufs_create+0x34/frame 0xfffffe104f86f540
VOP_CREATE_APV() at VOP_CREATE_APV+0x241/frame 0xfffffe104f86f5c0
VOP_CREATE() at VOP_CREATE+0x59/frame 0xfffffe104f86f620
vn_open_cred() at vn_open_cred+0x311/frame 0xfffffe104f86f770
vn_open() at vn_open+0x4c/frame 0xfffffe104f86f7b0
kern_openat() at kern_openat+0x212/frame 0xfffffe104f86f920
syscallenter() at syscallenter+0x4e4/frame 0xfffffe104f86f9f0
amd64_syscall() at amd64_syscall+0x4d/frame 0xfffffe104f86fab0

https://people.freebsd.org/~pho/stress/log/mateusz004.txt

- Peter