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Date: Wed, 29 Oct 2008 21:50:03 GMT
Message-Id: <200810292150.m9TLo3tN071905@freefall.freebsd.org>
To: freebsd-scsi@FreeBSD.org
From: Kirk Strauser <kirk@strauser.com>
Cc: 
Subject: Re: kern/128452: [sa] [panic] Accessing SCSI tape drive randomly
	crashes my amd64 system
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The following reply was made to PR kern/128452; it has been noted by GNATS.

From: Kirk Strauser <kirk@strauser.com>
To: bug-followup@FreeBSD.org,
 kirk@strauser.com
Cc:  
Subject: Re: kern/128452: [sa] [panic] Accessing SCSI tape drive randomly crashes my amd64 system
Date: Wed, 29 Oct 2008 16:44:50 -0500

 --Apple-Mail-39-48870811
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 And another crash, this time while running "sudo dd if=/dev/zero of=/ 
 dev/sa0 bs=1m count=100":
 
 
 (kgdb) bt
 #0  doadump () at pcpu.h:195
 #1  0x0000000000000004 in ?? ()
 #2  0xffffffff80487e41 in boot (howto=260) at /usr/src/sys/kern/ 
 kern_shutdown.c:418
 #3  0xffffffff80488272 in panic (fmt=0x104 <Address 0x104 out of  
 bounds>)
      at /usr/src/sys/kern/kern_shutdown.c:572
 #4  0xffffffff8067c354 in ufs_dirbad (ip=Variable "ip" is not available.
 ) at /usr/src/sys/ufs/ufs/ufs_lookup.c:607
 #5  0xffffffff8067d51d in ufs_lookup (ap=0xffffffffb16e47a0)
      at /usr/src/sys/ufs/ufs/ufs_lookup.c:297
 #6  0xffffffff804ef854 in vfs_cache_lookup (ap=Variable "ap" is not  
 available.
 ) at vnode_if.h:83
 #7  0xffffffff8077fb2f in VOP_LOOKUP_APV (vop=0xffffffff80a00000,  
 a=0xffffffffb16e4860)
      at vnode_if.c:99
 #8  0xffffffff804f59ac in lookup (ndp=0xffffffffb16e4970) at  
 vnode_if.h:57
 #9  0xffffffff804f6884 in namei (ndp=0xffffffffb16e4970) at /usr/src/ 
 sys/kern/vfs_lookup.c:219
 #10 0xffffffff8050323c in kern_stat (td=0xffffff006bc0f370,
      path=0x5a7c08 <Address 0x5a7c08 out of bounds>, pathseg=Variable  
 "pathseg" is not available.
 )
      at /usr/src/sys/kern/vfs_syscalls.c:2113
 #11 0xffffffff8050347c in stat (td=Variable "td" is not available.
 ) at /usr/src/sys/kern/vfs_syscalls.c:2097
 #12 0xffffffff8074037c in syscall (frame=0xffffffffb16e4c80) at /usr/ 
 src/sys/amd64/amd64/trap.c:907
 #13 0xffffffff8072763b in Xfast_syscall () at /usr/src/sys/amd64/amd64/ 
 exception.S:330
 #14 0x0000000800bdd57c in ?? ()
 Previous frame inner to this frame (corrupt stack?)
 
 
 
 
 --Apple-Mail-39-48870811
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 <html><body style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; =
 -webkit-line-break: after-white-space; "><div>And another crash, this =
 time while running "sudo dd if=3D/dev/zero of=3D/dev/sa0 bs=3D1m =
 count=3D100":</div><div><br></div><div><br></div><div>(kgdb) =
 bt</div><div>#0 &nbsp;doadump () at pcpu.h:195</div><div>#1 =
 &nbsp;0x0000000000000004 in ?? ()</div><div>#2 &nbsp;0xffffffff80487e41 =
 in boot (howto=3D260) at =
 /usr/src/sys/kern/kern_shutdown.c:418</div><div>#3 =
 &nbsp;0xffffffff80488272 in panic (fmt=3D0x104 &lt;Address 0x104 out of =
 bounds>)</div><div>&nbsp;&nbsp; &nbsp;at =
 /usr/src/sys/kern/kern_shutdown.c:572</div><div>#4 =
 &nbsp;0xffffffff8067c354 in ufs_dirbad (ip=3DVariable "ip" is not =
 available.</div><div>) at =
 /usr/src/sys/ufs/ufs/ufs_lookup.c:607</div><div>#5 =
 &nbsp;0xffffffff8067d51d in ufs_lookup =
 (ap=3D0xffffffffb16e47a0)</div><div>&nbsp;&nbsp; &nbsp;at =
 /usr/src/sys/ufs/ufs/ufs_lookup.c:297</div><div>#6 =
 &nbsp;0xffffffff804ef854 in vfs_cache_lookup (ap=3DVariable "ap" is not =
 available.</div><div>) at vnode_if.h:83</div><div>#7 =
 &nbsp;0xffffffff8077fb2f in VOP_LOOKUP_APV (vop=3D0xffffffff80a00000, =
 a=3D0xffffffffb16e4860)</div><div>&nbsp;&nbsp; &nbsp;at =
 vnode_if.c:99</div><div>#8 &nbsp;0xffffffff804f59ac in lookup =
 (ndp=3D0xffffffffb16e4970) at vnode_if.h:57</div><div>#9 =
 &nbsp;0xffffffff804f6884 in namei (ndp=3D0xffffffffb16e4970) at =
 /usr/src/sys/kern/vfs_lookup.c:219</div><div>#10 0xffffffff8050323c in =
 kern_stat (td=3D0xffffff006bc0f370,&nbsp;</div><div>&nbsp;&nbsp; =
 &nbsp;path=3D0x5a7c08 &lt;Address 0x5a7c08 out of bounds>, =
 pathseg=3DVariable "pathseg" is not =
 available.</div><div>)</div><div>&nbsp;&nbsp; &nbsp;at =
 /usr/src/sys/kern/vfs_syscalls.c:2113</div><div>#11 0xffffffff8050347c =
 in stat (td=3DVariable "td" is not available.</div><div>) at =
 /usr/src/sys/kern/vfs_syscalls.c:2097</div><div>#12 0xffffffff8074037c =
 in syscall (frame=3D0xffffffffb16e4c80) at =
 /usr/src/sys/amd64/amd64/trap.c:907</div><div>#13 0xffffffff8072763b in =
 Xfast_syscall () at =
 /usr/src/sys/amd64/amd64/exception.S:330</div><div>#14 =
 0x0000000800bdd57c in ?? ()</div><div>Previous frame inner to this frame =
 (corrupt stack?)</div><div><br></div><div =
 apple-content-edited=3D"true"><span class=3D"Apple-style-span" =
 style=3D"border-collapse: separate; border-spacing: 0px 0px; color: =
 rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: =
 normal; font-variant: normal; font-weight: normal; letter-spacing: =
 normal; line-height: normal; text-align: auto; =
 -khtml-text-decorations-in-effect: none; text-indent: 0px; =
 -apple-text-size-adjust: auto; text-transform: none; orphans: 2; =
 white-space: normal; widows: 2; word-spacing: 0px; "><div =
 style=3D"word-wrap: break-word; -khtml-nbsp-mode: space; =
 -khtml-line-break: after-white-space; "><span class=3D"Apple-style-span" =
 style=3D"border-collapse: separate; border-spacing: 0px 0px; color: =
 rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: =
 normal; font-variant: normal; font-weight: normal; letter-spacing: =
 normal; line-height: normal; text-align: auto; =
 -khtml-text-decorations-in-effect: none; text-indent: 0px; =
 -apple-text-size-adjust: auto; text-transform: none; orphans: 2; =
 white-space: normal; widows: 2; word-spacing: 0px; "><br =
 class=3D"Apple-interchange-newline"></span></div></span> =
 </div><br></body></html>=
 
 --Apple-Mail-39-48870811--