Hi all, I have a laptop configured as AP running on centos 6.3 with vanilla kernel 3.6.6. I got a system crash and with kdump configured I now have a vmcore to analize. Unfortunally the kernel that went on panic have debuginfo disabled. I recompiled the same kernel with debuginfo enabled and all the output I post here is based on the latter. I say this to explain the warning from crash command: WARNING: kernel version inconsistency between vmlinux and dumpfile I post here only the backtrace. If anyone is interested in investigation I will post more info. Just let me know what should I extract. regards Luigi --- here the backtrace --- [root@pack ~]# crash /boot/vmlinux-3.6.6-v2.bz2 /var/crash/127.0.0.1-2012-11-06-11\:30\:19/vmcore crash 6.1.0 Copyright (C) 2002-2012 Red Hat, Inc. Copyright (C) 2004, 2005, 2006, 2010 IBM Corporation Copyright (C) 1999-2006 Hewlett-Packard Co Copyright (C) 2005, 2006, 2011, 2012 Fujitsu Limited Copyright (C) 2006, 2007 VA Linux Systems Japan K.K. Copyright (C) 2005, 2011 NEC Corporation Copyright (C) 1999, 2002, 2007 Silicon Graphics, Inc. Copyright (C) 1999, 2000, 2001, 2002 Mission Critical Linux, Inc. This program is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Enter "help copying" to see the conditions. This program has absolutely no warranty. Enter "help warranty" for details. GNU gdb (GDB) 7.3.1 Copyright (C) 2011 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-unknown-linux-gnu"... WARNING: kernel version inconsistency between vmlinux and dumpfile crash: cannot determine thread return address KERNEL: /boot/vmlinux-3.6.6-v2.bz2 DUMPFILE: /var/crash/127.0.0.1-2012-11-06-11:30:19/vmcore [PARTIAL DUMP] CPUS: 2 DATE: Tue Nov 6 11:30:11 2012 UPTIME: 00:39:45 LOAD AVERAGE: 0.03, 0.02, 0.05 TASKS: 72 NODENAME: pack.this.lan RELEASE: 3.6.6-v1 VERSION: #1 SMP Mon Nov 5 12:42:37 CET 2012 MACHINE: x86_64 (1695 Mhz) MEMORY: 2 GB PANIC: "" PID: 0 COMMAND: "swapper/1" TASK: ffff88007b0aaf80 (1 of 2) [THREAD_INFO: ffff88007b0d2000] CPU: 1 STATE: TASK_RUNNING (PANIC) crash> bt PID: 0 TASK: ffff88007b0aaf80 CPU: 1 COMMAND: "swapper/1" #0 [ffff88007dd03ae0] machine_kexec at ffffffff8101eaef #1 [ffff88007dd03b30] do_kimage_alloc at ffffffff81074f93 #2 [ffff88007dd03c60] do_general_protection at ffffffff81003984 #3 [ffff88007dd03c68] rate_control_get_rate at ffffffffa03d26a6 [mac80211] #4 [ffff88007dd03d18] __lru_cache_add at ffffffff810a36d0 #5 [ffff88007dd03d48] skb_copy_and_csum_datagram at ffffffff8120994b #6 [ffff88007dd03d88] skb_copy_datagram_iovec at ffffffff81209fc8 #7 [ffff88007dd03da8] ath5k_txbuf_free_skb at ffffffffa042b2ba [ath5k] #8 [ffff88007dd03dc8] ath5k_beacon_update at ffffffffa042beff [ath5k] #9 [ffff88007dd03e68] ath5k_beacon_send at ffffffffa042c3cf [ath5k] #10 [ffff88007dd03e98] ath5k_tasklet_beacon at ffffffffa042c4a9 [ath5k] #11 [ffff88007dd03eb8] __tasklet_hrtimer_trampoline at ffffffff81034912 #12 [ffff88007dd03ed8] __tasklet_schedule at ffffffff81035000 #13 [ffff88007dd03f00] ack_apic_level at ffffffff8101c0a1 #14 [ffff88007dd03f70] run_ksoftirqd at ffffffff81034e05 #15 [ffff88007dd03f80] fixup_irqs at ffffffff81003e91 --- <IRQ stack> --- #16 [ffff88007b0d3e28] bad_gs at ffffffff812a50e7 [exception RIP: poll_idle+20] RIP: ffffffff8100afa4 RSP: ffff88007b0d3ed8 RFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000006464 RSI: 0000000000000086 RDI: ffffffff81716a88 RBP: ffff88007b0d3ed8 R8: 0000000000000000 R9: 0000000000000001 R10: 0000000000000000 R11: 0140000000000000 R12: 00000000ffffffff R13: ffff88007b0d3ef4 R14: 0000000000000004 R15: 0000000000011a80 ORIG_RAX: ffffffffffffff8e CS: 0010 SS: 0018 #17 [ffff88007b0d3ee0] arch_randomize_brk at ffffffff8100b0b4 #18 [ffff88007b0d3f10] exit_idle at ffffffff8100b296 #19 [ffff88007b0d3f30] __mutex_lock_slowpath at ffffffff8129fa9f crash> -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
