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[Bug 650640] New: tar segfaults with using --listed-incremental
  • From: bugzilla_noreply@xxxxxxxxxx
  • Date: Tue, 2 Nov 2010 09:04:45 +0000
  • Message-id: <bug-650640-21960@xxxxxxxxxxxxxxxxxxxxxxxx/>

https://bugzilla.novell.com/show_bug.cgi?id=650640

https://bugzilla.novell.com/show_bug.cgi?id=650640#c0


Summary: tar segfaults with using --listed-incremental
Classification: openSUSE
Product: openSUSE 11.3
Version: Final
Platform: x86-64
OS/Version: openSUSE 11.3
Status: NEW
Severity: Critical
Priority: P5 - None
Component: Kernel
AssignedTo: kernel-maintainers@xxxxxxxxxxxxxxxxxxxxxx
ReportedBy: Curt.Blank@xxxxxxxxxxxxxx
QAContact: qa@xxxxxxx
Found By: ---
Blocker: ---


User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.10)
Gecko/20100914 SUSE/3.6.10-0.3.1 Firefox/3.6.10

openSuSE 11.3
Kernel 2.6.34.7-0.5-default
tar 1.23
Filesystem ext4

Not sure if Kernel is the right Component for this but I am seeing a kernel
error in messages so I thought I'd start there.

When I run

tar -vv -cRf test.tar --listed-incremental=root.db --one-file-system -b 256
--totals / > test.log

and root.db does not exist tar completes successfully. If root.db exists from a
previous run tar segfaults and I see this in messages:

Nov 2 03:34:48 router kernel: [21938.384366] tar[29989]: segfault at 0 ip
000000000042e390 sp 00007fffc30ad078 error 4 in tar[400000+58000]

This is 100% repeatable whether I output to a file or a SCSI tape drive, delete
root.db it runs fine, if root.db exists from a previous run it segfaults.

If I backup /opt or any other ext4 filesystem thus mount point I do not have
this problem, seems to only occur when attempting to do an incremental backup
of / (root). This just started occurring with openSuSE 11.3 install done two
days ago worked fine up to then on 11.2, 11.1, 11.0, 10.x etc.




Reproducible: Always

Steps to Reproduce:
1. Run tar
2. Run tar
3. Run tar
Actual Results:
See Details

Expected Results:
Um, for it to work and not segfault...

I consider this Critical because it is preventing me from backing up the root
partition incrementally, the alternative, doing a full every day uses a lot of
tape.

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