[Varnish] #156: Varnish 1.1 branch dies with assert error in WS_ReleaseP

[Varnish]

#156: Varnish 1.1 branch dies with assert error in WS_ReleaseP
-----------------------------------+----------------------------------------
 Reporter:  anders                 |        Owner:  phk
     Type:  defect                 |       Status:  new
 Priority:  high                   |    Milestone:     
Component:  varnishd               |      Version:  1.1
 Severity:  major                  |   Resolution:     
 Keywords:  core dump WS_ReleaseP  |  
-----------------------------------+----------------------------------------
Comment (by anders):

 Running Varnish/trunk 2090, this happened again:

 {{{
 Child said (2, 36889): <<Assert error in WS_ReleaseP(), cache_ws.c line
 125:
   Condition(ws->r != NULL) not true.
   errno = 2 (No such file or directory)
 }}}

 Backtrace (child is attached to gdb):

 {{{
 (gdb) bt
 #0  0x0000000800c3249c in _umtx_op () at _umtx_op.S:2
 #1  0x00000008009a735d in __thr_umtx_lock (mtx=0xafaf80, id=101364)
     at /usr/src/lib/libthr/thread/thr_umtx.c:36
 #2  0x00000008009a18ec in _thr_umtx_lock (mtx=0xafaf80, id=101364)
     at thr_umtx.h:62
 #3  0x00000008009a249a in mutex_lock_common (curthread=0x3549400,
     m=0x800e13a80, abstime=0x0) at
 /usr/src/lib/libthr/thread/thr_mutex.c:527
 #4  0x00000008009a2fc3 in _pthread_mutex_lock (m=0x800e13a80)
     at /usr/src/lib/libthr/thread/thr_mutex.c:796
 #5  0x0000000800ce737b in __Bfree_D2A (v=0x2a6b140) at gdtoa_misc.c:98
 #6  0x0000000800ce2a1b in __dtoa (d=1191850327.892849, mode=3, ndigits=9,
     decpt=0x7fff820106bc, sign=0x7fff820106d4, rve=0x7fff820106b0)
     at gdtoa_dtoa.c:735
 #7  0x0000000800cdb49d in __vfprintf (fp=0x7fff820107f0,
     fmt0=0x42f281 "%u %.9f %.9f %.9f %.9f %.9f", ap=0x7fff82010900)
     at /usr/src/lib/libc/stdio/vfprintf.c:903
 #8  0x0000000800c36451 in vsnprintf (
     str=0x7fff82010f9b "2026381664 1191850327.892454863\001«2026378149
 1191850325.742480040 1191850326.912809134 0.063056231 1.169573545
 0.000755548", n=255,
     fmt=0x42f281 "%u %.9f %.9f %.9f %.9f %.9f", ap=0x7fff82010900)
     at /usr/src/lib/libc/stdio/vsnprintf.c:75
 #9  0x0000000000428c55 in WSL (w=0x7fff82012ae0, tag=SLT_ReqEnd, id=3823,
     fmt=0x42f281 "%u %.9f %.9f %.9f %.9f %.9f") at shmlog.c:253
 #10 0x000000000040e5fa in cnt_done (sp=0x1028008) at cache_center.c:205
 #11 0x000000000040fc29 in CNT_Session (sp=0x1028008) at steps.h:43
 #12 0x0000000000417538 in wrk_do_one (w=0x7fff82012ae0) at
 cache_pool.c:193
 #13 0x00000000004179f8 in wrk_thread (priv=0x85b320) at cache_pool.c:245
 #14 0x000000080099cc71 in thread_start (curthread=0x3549400)
     at /usr/src/lib/libthr/thread/thr_create.c:246
 #15 0x0000000000000000 in ?? ()
 Error accessing memory address 0x7fff82013000: Bad address.
 }}}

-- 
Ticket URL: <http://varnish.projects.linpro.no/ticket/156#comment:3>
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