RHEL 6: Panic with RIP ext4_ext_put_in_cache due to BUG_ON(len == 0)

Solution Verified - Updated -


  • 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]


  • 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

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.

Current Customers and Partners

Log in for full access

Log In

New to Red Hat?

Learn more about Red Hat subscriptions

Using a Red Hat product through a public cloud?

How to access this content