RHEL 6: Panic with RIP ext4_ext_put_in_cache due to BUG_ON(len == 0)
Issue
- System got kernel panic at "kernel BUG at fs/ext4/extents.c:1973!"
kernel BUG at fs/ext4/extents.c:1973!
....
Pid: 13206, comm: save Tainted: P --------------- 2.6.32-279.9.1.el6.x86_64 #1 Dell Inc. PowerEdge 2950/0J250G
RIP: 0010:[<ffffffffa06d9436>] [<ffffffffa06d9436>] ext4_ext_put_in_cache+0x86/0x90 [ext4]
- RHEV3.1 hypervisor or system with RHEL6.4 kernel panics with
kernel BUG at fs/ext4/extents.c:1992!
...
Pid: 28625, comm: dsmc Not tainted 2.6.32-358.2.1.el6.x86_64 #1 Red Hat RHEV Hypervisor
RIP: 0010:[<ffffffffa00b8b66>] [<ffffffffa00b8b66>] ext4_ext_put_in_cache+0x86/0x90 [ext4]
Environment
- Red Hat Enterprise Linux 6
- Any kernel prior to kernel-2.6.32-431.el6 likely affected
- seen on the following kernels: 2.6.32-279.9.1.el6, 2.6.32-358.2.1.el6
- RHEV-H
- Version prior to rhev-hypervisor6-6.5-20131115.0.3.2.iso
- Ext4 filesystem
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