Bug 21212

Summary: ext3 panic
Product: [Retired] Red Hat High Availability Server Reporter: Sam Varshavchik <mrsam>
Component: ext3Assignee: Stephen Tweedie <sct>
Status: CLOSED RAWHIDE QA Contact: Wil Harris <wil>
Severity: medium Docs Contact:
Priority: medium    
Version: beta   
Target Milestone: ---   
Target Release: ---   
Hardware: i386   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
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Clone Of: Environment:
Last Closed: 2000-11-22 00:36:31 UTC Type: ---
Regression: --- Mount Type: ---
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Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Sam Varshavchik 2000-11-22 00:36:29 UTC 
Got a kernel panic at system shutdown, after initscripts said "Unmounting
file systems".

This is with the released ext3 kernel RPMs, i586 version, with the root
partition on ext3:

Assertion failure in journal_flush() at journal.c: line 819
"journal->j_head == journal->j_fail"
Unable to handle kernel NULL pointer dereference at virtual address
00000000
current->tss.cr3 = 021c9000, %cr3 = 021c9000
*pde = 0000000


I shut down the system immediately after extreme load (this was a poor
PII-200, and I just installed glibc, glibc-devel, and openssh errata). 
After the system rebooted, I verified that the installed packages were OK.
Comment 1 Stephen Tweedie 2000-11-22 10:01:54 UTC 
It's a known problem with remounting a filesystem readonly, and is fixed in more
recent versions. There is no risk of data corruption from it.