Date: Sat, 29 Jul 2000 10:30:03 +0200 (CEST) From: Alexander Leidinger <Alexander@Leidinger.net> To: current@freebsd.org Subject: Panic in xpt_setup_ccb (cam_xpt.c) Message-ID: <200007290830.KAA00512@Magelan.Leidinger.net>
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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
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