Unmounting of vxfs partition on RHEL 5 can trigger a kernel panic later on, during fdisk or LUN scanning operations

Solution Unverified - Updated -

Issue

  • Unmounting of vxfs partition triggers a kernel panic.
  • On changing the partition system id for /dev/cciss/c0d1p1 from Linux (83)  to Linux LVM(8e) system panics. Before changing the partition id,  the partition was unmounted.
  • Using Red Hat provided LUN scanning script causes a kernel panic in blkdev_releasepage.

Environment

  • Red Hat Enterprise Linux (RHEL) 5
    • kernel 2.6.18-194.11.4.el5
    • kernel < 2.6.18-274.3.1.el5
  • Red Hat Enterprise Linux Desktop (RHEL) 5
    • kernel < 2.6.18-274.3.1.el5
  • Red Hat Enterprise Linux (RHEL) 5.6 Extended Update Support (EUS) or 5.6 Long Life (LL)
    • kernel < 2.6.18-238.31.1.el5

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