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Date: Sun, 31 Jul 2005 17:02:01 +0200 From: Guillaume Pelat <[EMAIL PROTECTED]> To: linux-kernel@vger.kernel.org Cc: [EMAIL PROTECTED] Subject: 2.6.13-rc4 - kernel panic - BUG at net/ipv4/tcp_output.c:918 Hi, I've been trying to upgrade kernel from 2.6.12.3 to 2.6.13-rc4 on a rather loaded http server, but i'm currently having a kernel panic a few minutes only after booting. The bug was reproductible (the crash happened after every reboot, with the same backtrace). Here is the error log: ------------[ cut here ]------------ kernel BUG at net/ipv4/tcp_output.c:918! invalid operand: 0000 [#1] CPU: 0 EIP: 0060:[<c027dd56>] Not tainted VLI EFLAGS: 00010293 (2.6.13-rc4-endy) EIP is at tcp_tso_should_defer+0xd6/0xf0 eax: 00000007 ebx: f1258080 ecx: 00000007 edx: f297f800 esi: 00000008 edi: 00000004 ebp: c031fd80 esp: c031fd70 ds: 007b es: 007b ss: 0068 Process swapper (pid: 0, threadinfo=c031e000 task=c02dbb80) Stack: f5f547b8 f1258080 00000008 f297f800 c031fdb8 c027de4b f297f800 f297f800 f1258080 00000009 f297f800 d039250c 00000000 00000002 00000002 f297f800 f297f800 00000100 c031fddc c027e192 f297f800 00000218 00000001 f5fd4034 Call Trace: [<c0102e5f>] show_stack+0x7f/0xa0 [<c0103002>] show_registers+0x152/0x1c0 [<c01031f8>] die+0xc8/0x140 [<c0103325>] do_trap+0xb5/0xc0 [<c010366c>] do_invalid_op+0xbc/0xd0 [<c0102aa3>] error_code+0x4f/0x54 [<c027de4b>] tcp_write_xmit+0xdb/0x3f0 [<c027e192>] __tcp_push_pending_frames+0x32/0xd0 [<c027c04e>] tcp_rcv_state_process+0x2be/0x9c0 [<c0283ee9>] tcp_v4_do_rcv+0x99/0x120 [<c02844e2>] tcp_v4_rcv+0x572/0x750 [<c026a62b>] ip_local_deliver+0xcb/0x1d0 [<c026aa52>] ip_rcv+0x322/0x4a0 [<c0256a97>] netif_receive_skb+0x137/0x1a0 [<c0256b8f>] process_backlog+0x8f/0x110 [<c0256c82>] net_rx_action+0x72/0x100 [<c01172dc>] __do_softirq+0x8c/0xa0 [<c011731a>] do_softirq+0x2a/0x30 [<c01173d5>] irq_exit+0x35/0x40 [<c01044fc>] do_IRQ+0x3c/0x70 [<c0102a46>] common_interrupt+0x1a/0x20 [<c0100997>] cpu_idle+0x57/0x60 [<c010024b>] _stext+0x2b/0x30 [<c0320847>] start_kernel+0x147/0x170 [<c0100199>] 0xc0100199 Code: 89 f8 0f af c2 3b 45 f0 0f 47 45 f0 31 d2 89 45 f0 f7 f3 31 d2 39 c1 73 ce ba 01 00 00 00 eb c7 6b c2 03 31 d2 39 c1 77 be eb ee <0f> 0b 96 03 ae 54 2d c0 e9 76 ff ff ff 8b ba 78 02 00 00 eb eb <0>Kernel panic - not syncing: Fatal exception in interrupt Some infos about my system: My network card is an e1000. root # cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 15 model : 3 model name : Intel(R) Pentium(R) 4 CPU 3.00GHz stepping : 3 cpu MHz : 2995.045 cache size : 1024 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 5 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dtsacpi mmx fxsr sse sse2 ss ht tm pbe pni monitor ds_cpl cid bogomips : 5914.62 http00 root # uname -a Linux http00 2.6.13-rc4 #1 Thu May 19 14:19:19 CEST 2005 i686 Intel(R) Pentium(R) 4 CPU 3.00GHz GenuineIntel GNU/Linux You can find dmesg, lspci and config at the following address: http://82.196.5.50/20050731/config.txt http://82.196.5.50/20050731/dmesg.txt http://82.196.5.50/20050731/lspci.txt http://82.196.5.50/20050731/sysctl.txt Best regards, Guillaume Pelat - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html