Subject: bin/29151: fsck_lfs dumps core with assertion "bp->b_count == size"
To: None <gnats-admin@netbsd.org, netbsd-bugs@netbsd.org>
From: Pavel Cahyna <pavel.cahyna@st.mff.cuni.cz>
List: netbsd-bugs
Date: 01/28/2005 22:28:00
>Number: 29151
>Category: bin
>Synopsis: fsck_lfs dumps core with assertion "bp->b_count == size"
>Confidential: no
>Severity: serious
>Priority: high
>Responsible: bin-bug-people
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Fri Jan 28 22:28:00 +0000 2005
>Originator: Pavel Cahyna
>Release: NetBSD 2.0_BETA i386
>Organization:
>Environment:
System: NetBSD 2.0_BETA (GENERIC_DIAGNOSTIC s patchem D. Reeda - PR#26839) #4: Wed Oct 6 10:13:10 CEST 2004
pavel@pc.martani.n2.repy.czf:/mnt/obj/kompilace/jadra/compile/GENERIC_DIAGNOSTIC
>Description:
Today when browsing with mozilla (which have its cache on a LFS filesystem) the system got frozen.
X were completely dead, the machine answered pings but no ssh connectin to it was possible. Sometimes
I could hear some disk activity, but not constantly. After some time, I reset it. Then fsck complained:
fsck_lfs: Partial segment at 0x501800 data checksum mismatch: given 0xc45f, computed 0xf9d9
** /dev/rsd2h
** Last Mounted on
** Phase 0 - Check Segment Summaries and Inode Free List
** Phase 1 - Check Blocks and Sizes
** Phase 2 - Check Pathnames
** Phase 3 - Check Connectivity
** Phase 4 - Check Reference Counts
** Phase 5 - Check Segment Block Accounting
** Phase 6 - Roll Forward
roll forward? [yn]
** Phase 6b - Recheck Segment Block Accounting
avail given as 3083864, should be 3085912
fix? [yn]
211225 files, 3741108 used, 3310559 free
WRITE CHANGES TO DISK? [yn] assertion "bp->b_bcount == size" failed: file "/autobuild/netbsd-2-0/src/sbin/fsck_lfs/bufcache.c", line 184, function "getblk"
WRITING CHANGES TO DISK
fsck: /dev/rsd2h: Abort trap
# gdb /sbin/fsck_lfs /fsck_lfs.core
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This GDB was configured as "i386--netbsdelf"...(no debugging symbols found)...
Core was generated by `fsck_lfs'.
Program terminated with signal 6, Aborted.
warning: current_sos: Can't read pathname for load map: Input/output error
Reading symbols from /lib/libc.so.12...(no debugging symbols found)...done.
Loaded symbols for /lib/libc.so.12
#0 0x48089fab in kill () from /lib/libc.so.12
(gdb) where
#0 0x48089fab in kill () from /lib/libc.so.12
#1 0x480fea87 in abort () from /lib/libc.so.12
#2 0x480d1356 in __assert13 () from /lib/libc.so.12
#3 0x08049467 in getblk ()
#4 0x08054053 in lfs_writeinode ()
#5 0x08055c82 in lfs_writevnodes ()
#6 0x08053d9b in lfs_segwrite ()
#7 0x08056d88 in ckfini ()
#8 0x0804e024 in checkfilesys ()
#9 0x0804de52 in main ()
#10 0x08048fc2 in ___start ()
>How-To-Repeat:
unknown. The filesystem image and the core dump can be provided.
>Fix:
unknown.