From: Michal Sojka Date: Sun, 5 Dec 2010 00:10:22 +0000 (+0100) Subject: Add additional kernel panic info X-Git-Tag: fix-allnoconfig~244^2~2 X-Git-Url: http://rtime.felk.cvut.cz/gitweb/can-benchmark.git/commitdiff_plain/2e8fca1fe9e2a1bcbbf7e7cff5eb019417144721 Add additional kernel panic info --- diff --git a/doc/notes.org b/doc/notes.org index 254ada5..b27d6e2 100644 --- a/doc/notes.org +++ b/doc/notes.org @@ -82,6 +82,187 @@ Call Trace: [c03f3ff0] [00003438] 0x3438 Rebooting in 180 seconds.. +** Current kernel +Unable to handle kernel paging request for instruction fetch +Faulting instruction address: 0x8cd6acc4 +Oops: Kernel access of bad area, sig: 11 [#1] +PREEMPT Shark +Modules linked in: +NIP: 8cd6acc4 LR: c025fdac CTR: 8cd6acc7 +REGS: c03f3bd0 TRAP: 0400 Not tainted (2.6.33.7-00005-ge2f49b5) +MSR: 20009032 CR: 22008028 XER: 0000005f +TASK = c03d6478[0] 'swapper' THREAD: c03f2000 +GPR00: 8cd6acc7 c03f3c80 c03d6478 c79fec00 c78cd4ad 00000048 c79fec44 00000002 +GPR08: 000000e0 00000000 00000001 c03f3c80 42000022 7f33ff4e 80000000 00000042 +GPR16: 00000008 20000000 c909e900 00000001 c03f3d88 c79386e0 00000008 c79fe51c +GPR24: 0000000c c78cd4f9 c7975800 c7949828 c7a33d24 c79fec00 c78cd4ad c03f3c80 +NIP [8cd6acc4] 0x8cd6acc4 +LR [c025fdac] dev_queue_xmit+0xec/0x588 +Call Trace: +[c03f3c80] [c025fd68] dev_queue_xmit+0xa8/0x588 (unreliable) +[c03f3cb0] [c02d5128] can_send+0x9c/0x1a0 +[c03f3cd0] [c02d85ec] can_can_gw_rcv+0x108/0x164 +[c03f3d00] [c02d3fdc] can_rcv_filter+0xf8/0x2e8 +[c03f3d20] [c02d4294] can_rcv+0xc8/0x140 +[c03f3d40] [c025e6f8] netif_receive_skb+0x2a8/0x34c +[c03f3d80] [c020a774] mscan_rx_poll+0x1c0/0x464 +[c03f3de0] [c025f1b8] net_rx_action+0x104/0x238 +[c03f3e30] [c00368c8] __do_softirq+0x128/0x244 +[c03f3e80] [c00075e0] do_softirq+0x64/0x80 +[c03f3e90] [c00365d0] irq_exit+0x98/0xc4 +[c03f3ea0] [c00076d8] do_IRQ+0xdc/0x188 +[c03f3ed0] [c0014d40] ret_from_except+0x0/0x14 +[c03f3f90] [c000aed8] cpu_idle+0x68/0x10c (unreliable) +--- Exception: 501 at cpu_idle+0xfc/0x10c + LR = cpu_idle+0xfc/0x10c +[c03f3fb0] [c0003f34] rest_init+0x98/0xc4 +[c03f3fc0] [c039f914] start_kernel+0x2e0/0x2f8 +[c03f3ff0] [00003438] 0x3438 +Instruction dump: +XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX +XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX +Kernel panic - not syncing: Fatal exception in interrupt +Call Trace: +[c03f3ac0] [c0009cc0] show_stack+0x70/0x1d4 (unreliable) +[c03f3b10] [c02fde74] dump_stack+0x2c/0x44 +[c03f3b20] [c02fdf30] panic+0xa4/0x19c +[c03f3b70] [c0011d90] die+0x184/0x1a0 +--- Exception: c03f3d88 at 0x42000022 + LR = 0x8 +[c03f3ba0] [c0016558] bad_page_fault+0x90/0xe0 (unreliable) +[c03f3bc0] [c0014b48] handle_page_fault+0x7c/0x80 +--- Exception: 400 at 0x8cd6acc4 + LR = dev_queue_xmit+0xec/0x588 +[c03f3c80] [c025fd68] dev_queue_xmit+0xa8/0x588 (unreliable) +[c03f3cb0] [c02d5128] can_send+0x9c/0x1a0 +[c03f3cd0] [c02d85ec] can_can_gw_rcv+0x108/0x164 +[c03f3d00] [c02d3fdc] can_rcv_filter+0xf8/0x2e8 +[c03f3d20] [c02d4294] can_rcv+0xc8/0x140 +[c03f3d40] [c025e6f8] netif_receive_skb+0x2a8/0x34c +[c03f3d80] [c020a774] mscan_rx_poll+0x1c0/0x464 +[c03f3de0] [c025f1b8] net_rx_action+0x104/0x238 +[c03f3e30] [c00368c8] __do_softirq+0x128/0x244 +[c03f3e80] [c00075e0] do_softirq+0x64/0x80 +[c03f3e90] [c00365d0] irq_exit+0x98/0xc4 +[c03f3ea0] [c00076d8] do_IRQ+0xdc/0x188 +[c03f3ed0] [c0014d40] ret_from_except+0x0/0x14 +--- Exception: 501 at cpu_idle+0xfc/0x10c + LR = cpu_idle+0xfc/0x10c +[c03f3f90] [c000aed8] cpu_idle+0x68/0x10c (unreliable) +[c03f3fb0] [c0003f34] rest_init+0x98/0xc4 +[c03f3fc0] [c039f914] start_kernel+0x2e0/0x2f8 +[c03f3ff0] [00003438] 0x3438 + + +*** Disassemble + if (q->enqueue) { +c025fd54: 80 1e 00 00 lwz r0,0(r30) +c025fd58: 2f 80 00 00 cmpwi cr7,r0,0 +c025fd5c: 41 9e 01 94 beq- cr7,c025fef0 + raw_spin_lock_init(&(_lock)->rlock); \ +} while (0) + +static inline void spin_lock(spinlock_t *lock) +{ + raw_spin_lock(&lock->rlock); +c025fd60: 38 60 00 01 li r3,1 +c025fd64: 4b dc 47 cd bl c0024530 +c025fd68: 80 1e 00 4c lwz r0,76(r30) !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! +{ + spinlock_t *root_lock = qdisc_lock(q); + int rc; + + spin_lock(root_lock); + if (unlikely(test_bit(__QDISC_STATE_DEACTIVATED, &q->state))) { +c025fd6c: 3b 3e 00 4c addi r25,r30,76 +c025fd70: 70 09 00 04 andi. r9,r0,4 +c025fd74: 40 82 01 f0 bne- c025ff64 + +*** Corresponding C code +static inline int __dev_xmit_skb(struct sk_buff *skb, struct Qdisc *q, + struct net_device *dev, + struct netdev_queue *txq) +{ + spinlock_t *root_lock = qdisc_lock(q); + int rc; + + spin_lock(root_lock); + +** 2.6.36.1-00006-g2e11adb +Faulting instruction address: 0xc0262358 +Oops: Kernel access of bad area, sig: 11 [#1] +PREEMPT Shark +last sysfs file: /sys/devices/lpb.0/fc000000.flash/mtd/mtd2ro/dev +Modules linked in: +NIP: c0262358 LR: c026218c CTR: 00000000 +REGS: c7ffbd20 TRAP: 0300 Not tainted (2.6.36.1-00006-g2e11adb) +MSR: 00009032 CR: 42008024 XER: 0000005f +DAR: fffffffe, DSISR: 20000000 +TASK = c03e44d0[0] 'swapper' THREAD: c0400000 +GPR00: c7939560 c7ffbdd0 c03e44d0 00000100 00000000 00000060 c798bb64 00000000 +GPR08: 000000e8 00000002 00000001 00000002 42000022 7f33ff4e 80000000 00000042 +GPR16: 00000008 20000000 c909e900 00000001 c7ffbef8 c0404a84 c0404a80 c78b4000 +GPR24: 00000000 c798bb20 c79395c0 c7a77e20 c796f800 c798bb20 fffffffe c7ffbdd0 +NIP [c0262358] dev_queue_xmit+0x200/0x4f0 +LR [c026218c] dev_queue_xmit+0x34/0x4f0 +Call Trace: +[c7ffbdd0] [c026218c] dev_queue_xmit+0x34/0x4f0 (unreliable) +[c7ffbe00] [c02dd1f4] can_send+0x9c/0x1a0 +[c7ffbe20] [c02e07a8] can_can_gw_rcv+0x108/0x164 +[c7ffbe50] [c02dc224] can_rcv_filter+0xf8/0x2e8 +[c7ffbe70] [c02dc4dc] can_rcv+0xc8/0x140 +[c7ffbe90] [c02606f0] __netif_receive_skb+0x2cc/0x338 +[c7ffbed0] [c0260934] netif_receive_skb+0x5c/0x98 +[c7ffbef0] [c020d72c] mscan_rx_poll+0x1c0/0x454 +[c7ffbf50] [c0260c64] net_rx_action+0x104/0x230 +[c7ffbfa0] [c0031350] __do_softirq+0x118/0x22c +[c7ffbff0] [c0011704] call_do_softirq+0x14/0x24 +[c0401e60] [c0006bdc] do_softirq+0x84/0xa8 +[c0401e80] [c0031074] irq_exit+0x88/0xb4 +[c0401e90] [c0006d60] do_IRQ+0xe0/0x234 +[c0401ec0] [c00123d4] ret_from_except+0x0/0x14 +--- Exception: 501 at cpu_idle+0xfc/0x10c + LR = cpu_idle+0xfc/0x10c +[c0401f80] [c000a7a8] cpu_idle+0x68/0x10c (unreliable) +[c0401fa0] [c0003ec0] rest_init+0x9c/0xbc +[c0401fc0] [c03ad91c] start_kernel+0x2c0/0x2d8 +[c0401ff0] [00003438] 0x3438 +Instruction dump: +41920198 817e000c 2f8b0000 419c018c 55693032 55602036 7ca04850 5569043e +b13d0074 801c01c8 7f402a14 83da0004 <801e0000> 2f800000 409efe88 801c00d8 +Kernel panic - not syncing: Fatal exception in interrupt +Call Trace: +[c7ffbc00] [c00095dc] show_stack+0xb0/0x1d4 (unreliable) +[c7ffbc50] [c030664c] dump_stack+0x2c/0x44 +[c7ffbc60] [c0306720] panic+0xbc/0x1fc +[c7ffbcc0] [c000f34c] die+0x1b8/0x1e8 +--- Exception: c7ffbef8 at 0x42000022 + LR = 0x8 +[c7ffbcf0] [c0013b8c] bad_page_fault+0x90/0xe0 (unreliable) +[c7ffbd10] [c00121dc] handle_page_fault+0x7c/0x80 +--- Exception: 300 at dev_queue_xmit+0x200/0x4f0 + LR = dev_queue_xmit+0x34/0x4f0 +[c7ffbe00] [c02dd1f4] can_send+0x9c/0x1a0 +[c7ffbe20] [c02e07a8] can_can_gw_rcv+0x108/0x164 +[c7ffbe50] [c02dc224] can_rcv_filter+0xf8/0x2e8 +[c7ffbe70] [c02dc4dc] can_rcv+0xc8/0x140 +[c7ffbe90] [c02606f0] __netif_receive_skb+0x2cc/0x338 +[c7ffbed0] [c0260934] netif_receive_skb+0x5c/0x98 +[c7ffbef0] [c020d72c] mscan_rx_poll+0x1c0/0x454 +[c7ffbf50] [c0260c64] net_rx_action+0x104/0x230 +[c7ffbfa0] [c0031350] __do_softirq+0x118/0x22c +[c7ffbff0] [c0011704] call_do_softirq+0x14/0x24 +[c0401e60] [c0006bdc] do_softirq+0x84/0xa8 +[c0401e80] [c0031074] irq_exit+0x88/0xb4 +[c0401e90] [c0006d60] do_IRQ+0xe0/0x234 +[c0401ec0] [c00123d4] ret_from_except+0x0/0x14 +--- Exception: 501 at cpu_idle+0xfc/0x10c + LR = cpu_idle+0xfc/0x10c +[c0401f80] [c000a7a8] cpu_idle+0x68/0x10c (unreliable) +[c0401fa0] [c0003ec0] rest_init+0x9c/0xbc +[c0401fc0] [c03ad91c] start_kernel+0x2c0/0x2d8 +[c0401ff0] [00003438] 0x3438 + * write returns ENOBUFS The reason is queuing discipline - the queue is full and pfifo_fast_enqueue returns failure. This failure is propagated down to