Red Hat Bugzilla – Bug 445911
Fedora 7 kernel 220.127.116.11-80.fc7 crashed during boot at iwl4965_irq_tasklet+0xfbf.
Last modified: 2008-06-16 23:07:30 EDT
Description of problem:
Panic during boot.
Version-Release number of selected component (if applicable):
Not reproducible. One off.
Steps to Reproduce:
Reported to Intel wireless buzilla:
From the Intel wireless report:
Fedora 7 kernel 18.104.22.168-80.fc7 crashed during boot at
iwl4965_irq_tasklet+0xfbf. See attached screen shot.
From "objdump -d -r iwl4965.ko":
11a0e: 41 57 push %r15
11a10: 41 56 push %r14
11a12: 41 55 push %r13
129a2: 48 8b 90 d8 00 00 00 mov 0xd8(%rax),%rdx
129a9: 66 8b 42 06 mov 0x6(%rdx),%ax
129ad: 0f b6 f4 movzbl %ah,%esi
129b0: 81 e6 bf 00 00 00 and $0xbf,%esi
129b6: 83 fe 04 cmp $0x4,%esi
129b9: 74 16 je 129d1
129bb: 0f b6 52 04 movzbl 0x4(%rdx),%edx
129bf: 48 c7 c7 00 00 00 00 mov $0x0,%rdi
129c2: R_X86_64_32S .rodata.str1.1+0x4ae3
129c6: 31 c0 xor %eax,%eax
129c8: e8 00 00 00 00 callq 129cd
129c9: R_X86_64_PC32 printk+0xfffffffffffffffc
129cd: 0f 0b ud2a
So the panic message that scrolled off the screen is addressed as:
.rodata.str1.1+0x4ae3. From "readelf --hex-dump .rodata.str1.1 iwl4965.ko":
0x00004ae0 780a003c 333e6977 6c343936 353a2045 x..<3>iwl4965: E
0x00004af0 72726f72 2077726f 6e672063 6f6d6d61 rror wrong comma
0x00004b00 6e642071 75657565 20256420 636f6d6d nd queue %d comm
0x00004b10 616e6420 69642030 7825580a 003c343e and id 0x%X..<4>
Which comes from iwl4965_tx_cmd_complete():
if (txq_id != IWL_CMD_QUEUE_NUM)
IWL_ERROR("Error wrong command queue %d command id 0x%X\n",
BUG_ON(txq_id != IWL_CMD_QUEUE_NUM);
replaces the BUG_ON() with a WARN_ON().
Created attachment 304978 [details]
Photograph of panic traceback
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