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Date:      Sat, 29 Jul 2000 12:55:17 -0700 (PDT)
From:      Matthew Jacob <mjacob@feral.com>
To:        Alexander Leidinger <Alexander@Leidinger.net>
Cc:        current@FreeBSD.ORG
Subject:   Re: Panic in xpt_setup_ccb (cam_xpt.c)
Message-ID:  <Pine.BSF.4.10.10007291254340.67255-100000@beppo.feral.com>
In-Reply-To: <200007290830.KAA00512@Magelan.Leidinger.net>

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What hardware?

On Sat, 29 Jul 2000, Alexander Leidinger wrote:

> Hi,
> 
> while trying to read (dd if=/dev/cd0c) from a damaged cd (the surface is
> a little bit damaged), I've got a panic:
> ---snip---
> #0  boot (howto=260) at ../../kern/kern_shutdown.c:303
> #1  0xc01a0f19 in panic (fmt=0xc029aa60 "lockmgr: pid %d, not %s %d unlocking")
>     at ../../kern/kern_shutdown.c:553
> #2  0xc019b194 in lockmgr (lkp=0xc14f4a00, flags=65542, interlkp=0xd0e2e22c, 
>     p=0xd0313ba0) at ../../kern/kern_lock.c:382
> #3  0xc01cf2af in vop_stdunlock (ap=0xd0d2ecc8) at ../../kern/vfs_default.c:255
> #4  0xc022b641 in ufs_vnoperate (ap=0xd0d2ecc8)
>     at ../../ufs/ufs/ufs_vnops.c:2301
> #5  0xc01d22aa in vput (vp=0xd0e2e1c0) at vnode_if.h:794
> #6  0xc0222ea7 in ffs_sync (mp=0xc1046a00, waitfor=2, cred=0xc0b3f980, 
>     p=0xc037f0a0) at ../../ufs/ffs/ffs_vfsops.c:955
> #7  0xc01d4295 in sync (p=0xc037f0a0, uap=0x0) at ../../kern/vfs_syscalls.c:551
> #8  0xc01a094f in boot (howto=256) at ../../kern/kern_shutdown.c:225
> #9  0xc01a0f19 in panic (fmt=0xc02babef "page fault")
>     at ../../kern/kern_shutdown.c:553
> #10 0xc0265846 in trap_fatal (frame=0xd0d2ee10, eva=68)
>     at ../../i386/i386/trap.c:929
> #11 0xc02654f9 in trap_pfault (frame=0xd0d2ee10, usermode=0, eva=68)
>     at ../../i386/i386/trap.c:822
> #12 0xc02650bf in trap (frame={tf_fs = 16, tf_es = -791543792, 
>       tf_ds = -1072562160, tf_edi = 1, tf_esi = -1056803840, 
>       tf_ebp = -791482800, tf_isp = -791482820, tf_ebx = 0, tf_edx = 64, 
>       tf_ecx = -791482776, tf_eax = 1, tf_trapno = 12, tf_err = 0, 
>       tf_eip = -1072541595, tf_cs = 8, tf_eflags = 2163330, 
>       tf_esp = -791482664, tf_ss = -1072555584}) at ../../i386/i386/trap.c:427
> #13 0xc0125065 in xpt_setup_ccb (ccb_h=0xd0d2ee68, path=0x40, priority=1)
>     at ../../cam/cam_xpt.c:3734
> #14 0xc01219c0 in cam_release_devq (path=0x40, relsim_flags=0, openings=0, 
>     timeout=0, getcount_only=0) at ../../cam/cam_periph.c:855
> ---Type <return> to continue, or q <return> to quit---
> #15 0xc0121b37 in camperiphdone (periph=0xc1021480, done_ccb=0xc1027400)
>     at ../../cam/cam_periph.c:1021
> #16 0xc0127997 in camisr (queue=0xc03189b0) at ../../cam/cam_xpt.c:6328
> #17 0xc01277a9 in swi_cambio () at ../../cam/cam_xpt.c:6231
> #18 0xc025b900 in splz_swi ()
> #19 0xc01a7451 in softclock () at ../../kern/kern_timeout.c:131
> #20 0xc025b85f in doreti_swi ()
> Cannot access memory at address 0x91992874.
> (kgdb) up 13
> #13 0xc0125065 in xpt_setup_ccb (ccb_h=0xd0d2ee68, path=0x40, priority=1)
>     at ../../cam/cam_xpt.c:3734
> 3734            ccb_h->path = path;
> (kgdb) 
> (kgdb) print path
> $1 = (struct cam_path *) 0x0
> (kgdb) print ccb_h
> $2 = (struct ccb_hdr *) 0x0
> (kgdb) up          
> #14 0xc01219c0 in cam_release_devq (path=0x40, relsim_flags=0, openings=0, 
>     timeout=0, getcount_only=0) at ../../cam/cam_periph.c:855
> 855             xpt_setup_ccb(&crs.ccb_h, path,
> (kgdb) print path
> $5 = (struct cam_path *) 0x40
> (kgdb) print *path
> Cannot access memory at address 0x40.
> ---snip---
> 
> It's a kernel from yesterday.
> 
> Bye,
> Alexander.
> 
> -- 
>    If Bill Gates had a dime for every time a Windows box crashed...
>                 ...Oh, wait a minute, he already does.
> 
> http://www.Leidinger.net                       Alexander @ Leidinger.net
>   GPG fingerprint = 7423 F3E6 3A7E B334 A9CC  B10A 1F5F 130A A638 6E7E
> 
> 
> 
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