PANIC: "kernel BUG at include/asm/spinlock.h:133!" on RHEL4.4

Solution Verified - Updated -

Issue

  • Server is rebooting sometimes daily.  Disabled ASR for error and the reboots are caused by kernel panics.
        Sep 16 09:55:25 hostname1 kernel:  [<c01041f5>] kernel_thread_helper+0x5/0xb 
        Sep 16 09:55:25 hostname1 kernel: Code: 00 75 09 f0 81 02 00 00 00 01 30 c9 89 c8 c3 53 89 c3 81 78 04 ad 4e ad de 74 18 ff 74 24 04 68 ee 4c 2e c0 e8 1c 14 e5 ff 58 5a <0f> 0b 85 00 a8 3d 2e c0 f0 fe 0b 79 09 f3 90 80 3b 00 7e f9 eb 
        Sep 16 09:55:25 hostname1 kernel:  <0>Fatal exception: panic in 5 seconds

Environment

  • Red Hat Enterprise Linux 4 update 4
  • Kernel version 2.6.9-34.0.2
  • NFS server with multiple clients connecting of unknown NFS connection versions

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