Red Hat Bugzilla – Bug 168854
Kernel panic when removing logical volume with name length greater than 16 characters
Last modified: 2007-11-30 17:07:20 EST
Description of problem: Attempting to remove logical volume with a name length
greater than 16 characters causes a kernel panic.
Version-Release number of selected component (if applicable):
How reproducible: Every time
Steps to Reproduce:
1. Create a logical volume with a name greater than 16 characters long
2. lmremove the lv just created
Actual results: Kernel paniced
Expected results: LV removed
This looks like the same issue that Ben Marzinski fixed
before where a pointer was dereferenced to and invalid
low memory address causing a panic. This panic stack
is coming from the thread, clvmd, that called the unlink()
system call (i.e. so the clvmd app was removing a file
from a directory).
e1000: eth6: e1000_watchdog: NIC Link is Down
<1>Unable to handle kernel NULL pointer dereference at
Stack traceback for pid 2589
0x00000100e58e77f0 2589 1 1 1 R 0x00000100e58e7bf0 *clvmd
RSP RIP Function (args)
0x100e52c7e50 0xffffffff801e54ed rb_first+0xa
0x100e52c7e68 0xffffffff8016dc0d mpol_free_shared_policy+0x35
0x100e52c7e88 0xffffffff801707e7 shmem_destroy_inode+0x11
0x100e52c7e98 0xffffffff8018a593 destroy_inode+0x42 (0xffffffff8018ba72)
0x100e52c7ea8 0xffffffff8018bb9f generic_delete_inode+0x12d (0x0)
0x100e52c7ec8 0xffffffff8018a9e1 iput+0x78
0x100e52c7ed8 0xffffffff8018226a sys_unlink+0x105
Since this was a kernel panic, exactly which kernel was it from?
Reassign to agk. It should be assigned to RHEL4/kernel but I can't seem to do that.
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.