Xen guest (DomU) kernel panicked after a failed attempt to detach a disk and a `fdisk` was performed on guest.
Issue
- Xen guest (DomU) kernel panicked after a failed attempt to detach a disk and a
fdiskwas performed on guest with the following RIP:
Unable to handle kernel NULL pointer dereference at 0000000000000010 RIP:
[<ffffffff88076016>] :xenblk:blkif_release+0x2d/0x53
PGD cadcb067 PUD 69749067 PMD 0
Oops: 0000 [1] SMP
last sysfs file: /block/ram0/dev
CPU 0
Modules linked in: oracleasm(U) lockd sunrpc ib_iser libiscsi2 scsi_transport_iscsi2 scsi_transport_iscsi ib_srp rds ib_sdp ib_ipoib ipoib_helper ipv6 xfrm_nalgo crypto_api rdma_ucm rdma_cm ib_ucm ib_uverbs ib_umad ib_cm iw_cm ib_addr ib_sa ib_mad ib_core dm_multipath scsi_dh scsi_mod parport_pc lp parport pcspkr xennet dm_raid45 dm_message dm_region_hash dm_mem_cache dm_snapshot dm_zero dm_mirror dm_log dm_mod xenblk ext3 jbd uhci_hcd ohci_hcd ehci_hcd
Pid: 9612, comm: fdisk Tainted: G ---- 2.6.18-308.el5xen #1
RIP: e030:[<ffffffff88076016>] [<ffffffff88076016>] :xenblk:blkif_release+0x2d/0x53
..
Process fdisk (pid: 9612, threadinfo ffff8800b70d0000, task ffff8800fd7fd860)
..
Call Trace:
[<ffffffff802da05c>] __blkdev_put+0x6d/0x169
[<ffffffff80213580>] __fput+0xd3/0x1bd
[<ffffffff80224425>] filp_close+0x5c/0x64
[<ffffffff8021e577>] sys_close+0x88/0xbd
[<ffffffff8025f2f9>] tracesys+0xab/0xb6
...
<0>Kernel panic - not syncing: Fatal exception
Environment
- Red Hat Enterprise Linux 5.8
- Xen
Subscriber exclusive content
A Red Hat subscription provides unlimited access to our knowledgebase of over 48,000 articles and solutions.
Welcome! Check out the Getting Started with Red Hat page for quick tours and guides for common tasks.
