Kdump fails after issuing sysrq-c when isolcpus is set.

Solution Unverified - Updated -

Issue

  • System encountered a kernel panic in sched_init_smp
      Kernel BUG at kernel/sched.c:7048
      invalid opcode: 0000 [1] SMP
      last sysfs file:
      CPU 0
      Modules linked in:
      Pid: 1, comm: swapper Not tainted 2.6.18-128.el5 #1
      RIP: 0010:[<ffffffff803f9359>]  [<ffffffff803f9359>] sched_init_smp+0x93/0xa3
.....
      Process swapper (pid: 1, threadinfo ffff810001ca8000, task ffff810001ca37a0)
.....
      Call Trace:
       [<ffffffff803e79e0>] init+0x183/0x2f7
       [<ffffffff8005dfb1>] child_rip+0xa/0x11
       [<ffffffff8017161b>] acpi_ds_init_one_object+0x0/0x80
       [<ffffffff803e785d>] init+0x0/0x2f7
       [<ffffffff8005dfa7>] child_rip+0x0/0x11

Environment

  • Red Hat Enterprise Linux 5.3

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