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Date: Thu, 15 May 2014 18:50:00 GMT
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To: freebsd-fs@FreeBSD.org
Cc: 
From: Radim Kolar <hsn@sendmail.cz>
Subject: RE: kern/189355: zfs panic on 10-stable
Reply-To: Radim Kolar <hsn@sendmail.cz>
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The following reply was made to PR kern/189355; it has been noted by GNATS.

From: Radim Kolar <hsn@sendmail.cz>
To: Steven Hartland <killing@multiplay.co.uk>, "freebsd-fs@FreeBSD.org"
	<freebsd-fs@freebsd.org>, "bug-followup@freebsd.org"
	<bug-followup@freebsd.org>
Cc:  
Subject: RE: kern/189355: zfs panic on 10-stable
Date: Thu, 15 May 2014 18:44:37 +0000

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 crash stack from patched kernel
 
 #7  0xc092336c in calltrap () at /usr/src/sys/i386/i386/exception.s:170
 #8  0xc069345d in kdb_enter (why=3D0xc09a7ef8 "panic"=2C
     msg=3D<value optimized out>) at cpufunc.h:71
 #9  0xc065710f in panic (fmt=3D<value optimized out>)
     at /usr/src/sys/kern/kern_shutdown.c:823
 #10 0xc0939acb in dblfault_handler () at /usr/src/sys/i386/i386/trap.c:1072
 #11 0xc0cb8187 in vdev_queue_io_to_issue (vq=3D0xc46ab300)
     at /usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/f=
 s/zfs/vdev_queue.c:489
 #12 0xc0cb8119 in vdev_queue_io (zio=3D0xc486c5b8)
     at /usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/f=
 s/zfs/vdev_queue.c:768
 #13 0xc0cd8704 in zio_vdev_io_start (ziop=3D<value optimized out>)
     at /usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/f=
 s/zfs/zio.c:2617
 #14 0xc0cd4e28 in zio_execute (zio=3D0xc486c5b8)
     at /usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/f=
 s/zfs/zio.c:1357
 #15 0xc0cb7604 in vdev_mirror_io_start (zio=3D0xc476f000)
     at /usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/f=
 s/zfs/vdev_mirror.c:284
 #16 0xc0cd854f in zio_vdev_io_start (ziop=3D<value optimized out>)
     at /usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/f=
 s/zfs/zio.c:2537
 #17 0xc0cd4e28 in zio_execute (zio=3D0xc476f000)
     at /usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/f=
 s/zfs/zio.c:1357
 #18 0xc0ca0ddc in spa_load_verify_cb (zilog=3D0x0=2C bp=3D<value optimized =
 out>=2C
     dnp=3D0xc4b0fa00=2C arg=3D<value optimized out>)
     at /usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/f=
 s/zfs/spa.c:1887
 #19 0xc0c5eb79 in traverse_visitbp (td=3D0xd93f1120=2C dnp=3D0xc46ab300=2C
     bp=3D0xc4b18100=2C zb=3D0xd93f06b0)
     at /usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/f=
 s/zfs/dmu_traverse.c:272
 #20 0xc0c5edb0 in traverse_visitbp (td=3D0xd93f1120=2C dnp=3D0xc4b0fa00=2C =
 bp=3D0x80=2C
     zb=3D0xd93f07a8)
     at /usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/f=
 s/zfs/dmu_traverse.c:306
 
 failing line 489 is:
 
         if (avl_numnodes(&vq->vq_active_tree) >=3D zfs_vdev_max_active)
                 return (ZIO_PRIORITY_NUM_QUEUEABLE)=3B
 
 
  		 	   		  =
 
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 <body class=3D'hmmessage'><div dir=3D'ltr'>crash stack from patched kernel<=
 br><br>#7&nbsp=3B 0xc092336c in calltrap () at /usr/src/sys/i386/i386/excep=
 tion.s:170<br>#8&nbsp=3B 0xc069345d in kdb_enter (why=3D0xc09a7ef8 "panic"=
 =2C<br>&nbsp=3B&nbsp=3B&nbsp=3B msg=3D&lt=3Bvalue optimized out&gt=3B) at c=
 pufunc.h:71<br>#9&nbsp=3B 0xc065710f in panic (fmt=3D&lt=3Bvalue optimized =
 out&gt=3B)<br>&nbsp=3B&nbsp=3B&nbsp=3B at /usr/src/sys/kern/kern_shutdown.c=
 :823<br>#10 0xc0939acb in dblfault_handler () at /usr/src/sys/i386/i386/tra=
 p.c:1072<br>#11 0xc0cb8187 in vdev_queue_io_to_issue (vq=3D0xc46ab300)<br>&=
 nbsp=3B&nbsp=3B&nbsp=3B at /usr/src/sys/modules/zfs/../../cddl/contrib/open=
 solaris/uts/common/fs/zfs/vdev_queue.c:489<br>#12 0xc0cb8119 in vdev_queue_=
 io (zio=3D0xc486c5b8)<br>&nbsp=3B&nbsp=3B&nbsp=3B at /usr/src/sys/modules/z=
 fs/../../cddl/contrib/opensolaris/uts/common/fs/zfs/vdev_queue.c:768<br>#13=
  0xc0cd8704 in zio_vdev_io_start (ziop=3D&lt=3Bvalue optimized out&gt=3B)<b=
 r>&nbsp=3B&nbsp=3B&nbsp=3B at /usr/src/sys/modules/zfs/../../cddl/contrib/o=
 pensolaris/uts/common/fs/zfs/zio.c:2617<br>#14 0xc0cd4e28 in zio_execute (z=
 io=3D0xc486c5b8)<br>&nbsp=3B&nbsp=3B&nbsp=3B at /usr/src/sys/modules/zfs/..=
 /../cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c:1357<br>#15 0xc0cb7604=
  in vdev_mirror_io_start (zio=3D0xc476f000)<br>&nbsp=3B&nbsp=3B&nbsp=3B at =
 /usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/fs/zfs/v=
 dev_mirror.c:284<br>#16 0xc0cd854f in zio_vdev_io_start (ziop=3D&lt=3Bvalue=
  optimized out&gt=3B)<br>&nbsp=3B&nbsp=3B&nbsp=3B at /usr/src/sys/modules/z=
 fs/../../cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c:2537<br>#17 0xc0c=
 d4e28 in zio_execute (zio=3D0xc476f000)<br>&nbsp=3B&nbsp=3B&nbsp=3B at /usr=
 /src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c=
 :1357<br>#18 0xc0ca0ddc in spa_load_verify_cb (zilog=3D0x0=2C bp=3D&lt=3Bva=
 lue optimized out&gt=3B=2C<br>&nbsp=3B&nbsp=3B&nbsp=3B dnp=3D0xc4b0fa00=2C =
 arg=3D&lt=3Bvalue optimized out&gt=3B)<br>&nbsp=3B&nbsp=3B&nbsp=3B at /usr/=
 src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/fs/zfs/spa.c:=
 1887<br>#19 0xc0c5eb79 in traverse_visitbp (td=3D0xd93f1120=2C dnp=3D0xc46a=
 b300=2C<br>&nbsp=3B&nbsp=3B&nbsp=3B bp=3D0xc4b18100=2C zb=3D0xd93f06b0)<br>=
 &nbsp=3B&nbsp=3B&nbsp=3B at /usr/src/sys/modules/zfs/../../cddl/contrib/ope=
 nsolaris/uts/common/fs/zfs/dmu_traverse.c:272<br>#20 0xc0c5edb0 in traverse=
 _visitbp (td=3D0xd93f1120=2C dnp=3D0xc4b0fa00=2C bp=3D0x80=2C<br>&nbsp=3B&n=
 bsp=3B&nbsp=3B zb=3D0xd93f07a8)<br>&nbsp=3B&nbsp=3B&nbsp=3B at /usr/src/sys=
 /modules/zfs/../../cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_traverse.=
 c:306<br><br>failing line 489 is:<br><br>&nbsp=3B&nbsp=3B&nbsp=3B&nbsp=3B&n=
 bsp=3B&nbsp=3B&nbsp=3B if (avl_numnodes(&amp=3Bvq-&gt=3Bvq_active_tree) &gt=
 =3B=3D zfs_vdev_max_active)<br>&nbsp=3B&nbsp=3B&nbsp=3B&nbsp=3B&nbsp=3B&nbs=
 p=3B&nbsp=3B&nbsp=3B&nbsp=3B&nbsp=3B&nbsp=3B&nbsp=3B&nbsp=3B&nbsp=3B&nbsp=
 =3B return (ZIO_PRIORITY_NUM_QUEUEABLE)=3B<br><br><br> 		 	   		  </div></b=
 ody>
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