svn commit: r326200 - head/sys/kern

[Mateusz Guzik]

On Sun, Nov 26, 2017 at 7:49 AM, Peter Holm <peter at holm.cc> wrote:

> 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
>

Fixed in r326237.


-- 
Mateusz Guzik <mjguzik gmail.com>