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Date: Mon, 9 Sep 2013 15:14:56 GMT
From: Charlie R <3zstbn24xn@snkmail.com>
To: freebsd-gnats-submit@FreeBSD.org
Subject: Kernel panic in ZFS I/O: solaris assert: BP_EQUAL(bp, &zio->io_bp_orig); zio.c line 2955 [9.2/amd64]
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>Number:         181966
>Category:       kern
>Synopsis:       [zfs] [panic] Kernel panic in ZFS I/O: solaris assert: BP_EQUAL(bp, &zio->io_bp_orig); zio.c line 2955 [9.2/amd64]
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-fs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Sep 09 15:20:00 UTC 2013
>Closed-Date:    
>Last-Modified:  Sun Apr 20 01:31:36 UTC 2014
>Originator:     Charlie R
>Release:        9.2-RC2/amd64 (r254368)
>Organization:
None
>Environment:
FreeBSD localhost 9.2-RC2 FreeBSD 9.2-RC2 #0 r254368: Thu Aug 15 18:49:04 UTC 2013     root@bake.isc.freebsd.org:/usr/obj/usr/src/sys/GENERIC  amd64 # 8GB RAM
>Description:
In the middle of normal read/write I/O, with a scrub running in the background, the ZFS layer caused the system to panic after triggering the following assertion:

panic: solaris assert: BP_EQUAL(bp, &zio->io_bp_orig), file: /usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c, line: 2955
cpuid = 1
KDB: stack backtrace:
#0 0xffffffff80947966 at kdb_backtrace+0x66
#1 0xffffffff8090d98e at panic:0x1ce
#2 0xffffffff8196b12a at assfail+0x1a
#3 0xffffffff818a1280 at zio_done:0x120
#4 0xffffffff8189ee73 at zio_execute+0xc3
#5 0xffffffff80954534 at taskqueue_run_locked+0x74
#6 0xffffffff809554e6 at taskqueue_thread_loop+0x46
#7 0xffffffff808db65f at fork_exit+0x11f
#8 0xffffffff80cdc19e at fork_trampoline+0xe

This is on a RAID-Z3 twelve drive ZFS array with the individual providers using GELI.  It's an amd64 system (Intel Core 2, multiple cores).
>How-To-Repeat:
Have a RAID-Z3 ZFS array on twelve drives over GELI.  Had a zpool scrub running in the background and some read/write I/O.
>Fix:
Unknown.

>Release-Note:
>Audit-Trail:
Responsible-Changed-From-To: freebsd-bugs->freebsd-fs 
Responsible-Changed-By: linimon 
Responsible-Changed-When: Fri Sep 13 22:36:50 UTC 2013 
Responsible-Changed-Why:  
overs 

http://www.freebsd.org/cgi/query-pr.cgi?pr=181966 

From: Garrett Wollman <wollman@bimajority.org>
To: bug-followup@freebsd.org
Cc:  
Subject: Re: kern/181966: [zfs] Kernel panic in ZFS I/O: solaris assert: BP_EQUAL(bp, &zio->io_bp_orig); zio.c line 2955 [9.2/amd64]
Date: Thu, 10 Apr 2014 06:14:12 -0400

 Just hit this bug, with the following (apparently identical) stack
 trace on a 9.2 system:
 
 panic: solaris assert: BP_EQUAL(bp, &zio->io_bp_orig), file: /usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/fs/zfs/zio.c, line: 2955
 cpuid = 20
 KDB: stack backtrace:
 db_trace_self_wrapper() at db_trace_self_wrapper+0x2a/frame 0xffffff98a38d2900
 kdb_backtrace() at kdb_backtrace+0x37/frame 0xffffff98a38d29c0
 panic() at panic+0x1ce/frame 0xffffff98a38d2ac0
 assfail() at assfail+0x1a/frame 0xffffff98a38d2ad0
 zio_done() at zio_done+0x120/frame 0xffffff98a38d2b30
 zio_execute() at zio_execute+0xc3/frame 0xffffff98a38d2b70
 taskqueue_run_locked() at taskqueue_run_locked+0x74/frame 0xffffff98a38d2bc0
 taskqueue_thread_loop() at taskqueue_thread_loop+0x46/frame 0xffffff98a38d2be0
 fork_exit() at fork_exit+0x11f/frame 0xffffff98a38d2c30
 fork_trampoline() at fork_trampoline+0xe/frame 0xffffff98a38d2c30
 --- trap 0, rip = 0, rsp = 0xffffff98a38d2cf0, rbp = 0 ---
 
 No debugger or dump partition configured, so all I could do is let it
 reboot.
 
 -GAWollman
>Unformatted:
