![从此系统崩溃跟踪中可以提取哪些信息](https://linux22.com/image/1092224/%E4%BB%8E%E6%AD%A4%E7%B3%BB%E7%BB%9F%E5%B4%A9%E6%BA%83%E8%B7%9F%E8%B8%AA%E4%B8%AD%E5%8F%AF%E4%BB%A5%E6%8F%90%E5%8F%96%E5%93%AA%E4%BA%9B%E4%BF%A1%E6%81%AF.png)
我的 ubuntu (jaunty) 系统最近因这个跟踪而崩溃。我可以从这个跟踪中推断出什么信息?我通过 ssh 登录,并尝试连接到 wifi 网络。ath_tx_start 听起来像是 madwifi 驱动程序中的一个函数。我应该在哪些位置搜索以查找更多跟踪,网络上有没有什么地方可以找到有关崩溃的帮助?
编辑:我刚刚发现机器上的处理器是 geode 处理器,不支持 PAE,并且我安装了 ubuntu 服务器自带的默认内核(使用 PAE)。这会导致崩溃吗?
[ 399.757029] BUG: unable to handle kernel paging request at d0c1510c
[ 399.760789] IP: [<d0cb5312>] ath_tx_start+0x1022/0x1440 [ath_pci]
[ 399.760789] Oops: 0000 [#1]
[ 399.760789] last sysfs file: /sys/devices/pci0000:00/0000:00:0e.0/net/ath0/type
[ 399.760789] Dumping ftrace buffer:
[ 399.760789] (ftrace buffer empty)
[ 399.760789] Modules linked in: wlan_scan_sta ath_rate_sample ath_pci wlan ath_hal(P) ipv6 lp parport loop evdev pcspkr scx200 ext3 jbd mbcache ide_gd_modr
[ 399.760789]
[ 399.760789] Pid: 1918, comm: sshd Tainted: P (2.6.28-6-386 #20-Ubuntu)
[ 399.760789] EIP: 0060:[<d0cb5312>] EFLAGS: 00010046 CPU: 0
[ 399.760789] EIP is at ath_tx_start+0x1022/0x1440 [ath_pci]
[ 399.760789] EAX: 00000240 EBX: 00000000 ECX: 0000001c EDX: d0c147e0
[ 399.760789] ESI: 00000001 EDI: ce5b7878 EBP: ce45de54 ESP: ce45dd64
[ 399.760789] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068
[ 399.760789] Process sshd (pid: 1918, ti=ce45c000 task=cde7cf80 task.ti=ce45c000)
[ 399.760789] Stack:
[ 399.760789] 00000018 ce45de47 ce45de40 ce45de46 c030caf1 ce45dd94 00000246 c030caf1
[ 399.760789] 00000000 ce9569c0 031884a0 00007d2b cee684a0 00000246 ce45ddb0 c0309aec
[ 399.760789] c0340737 00000000 00003fd0 ce0e05d0 ce424000 ce5b6000 ce5b0600 cee6681e
[ 399.760789] Call Trace:
[ 399.760789] [<c030caf1>] ? __kfree_skb+0x31/0x80
[ 399.760789] [<c030caf1>] ? __kfree_skb+0x31/0x80
[ 399.760789] [<c0309aec>] ? release_sock+0x7c/0x90
[ 399.760789] [<c0340737>] ? tcp_cleanup_rbuf+0xe7/0x110
[ 399.760789] [<c0309333>] ? sock_common_recvmsg+0x43/0x60
[ 399.760789] [<c030d53c>] ? dev_alloc_skb+0x1c/0x30
[ 399.760789] [<d0cb57fd>] ? ath_mgtstart+0xcd/0x1e0 [ath_pci]
[ 399.760789] [<c030d53c>] ? dev_alloc_skb+0x1c/0x30
[ 399.760789] [<d0c75ff5>] ? ieee80211_getmgtframe+0x65/0x90 [wlan]
[ 399.760789] [<d0c67ab5>] ? ieee80211_send_nulldata+0x115/0x170 [wlan]
[ 399.760789] [<c01403f3>] ? getnstimeofday+0x53/0x100
[ 399.760789] [<d0c657a1>] ? ieee80211_node_timeout+0x2b1/0x300 [wlan]
[ 399.760789] [<c012f28d>] ? run_timer_softirq+0x11d/0x1e0
[ 399.760789] [<d0c654f0>] ? ieee80211_node_timeout+0x0/0x300 [wlan]
[ 399.760789] [<d0c654f0>] ? ieee80211_node_timeout+0x0/0x300 [wlan]
[ 399.760789] [<c012b037>] ? __do_softirq+0x67/0x110
[ 399.760789] [<c01068f9>] ? timer_interrupt+0x29/0x60
[ 399.760789] [<c012b12d>] ? do_softirq+0x4d/0x50
[ 399.760789] [<c012b21d>] ? irq_exit+0x2d/0x40
[ 399.760789] [<c0106221>] ? do_IRQ+0x71/0x90
[ 399.760789] [<c019915d>] ? sys_read+0x3d/0x70
[ 399.760789] [<c01050b3>] ? common_interrupt+0x23/0x30
[ 399.760789] [<c0380000>] ? atm_del_addr+0x130/0x150
[ 399.760789] Code: 45 f3 8b 55 b8 8d 04 40 0f b7 44 82 2c 01 c3 eb 9d c7 04 24 2d eb cb d0 e8 ec 92 6d ef 0f 0b eb fe 0f b6 45 f3 8b 55 b8 8d 04 40 <0f> b
[ 399.760789] EIP: [<d0cb5312>] ath_tx_start+0x1022/0x1440 [ath_pci] SS:ESP 0068:ce45dd64
[ 399.760789] Kernel panic - not syncing: Fatal exception in interrupt
答案1
问题似乎出在 PAE 上。我使用的是 soekris 4801 机箱,它有一个没有 PAE 扩展的 geode 处理器,但安装的默认内核使用 PAE 扩展,导致我开始使用 wifi 时出现内核崩溃。
通过安装和使用 linux-image-generic 软件包中的通用内核解决了这个问题。或者,也可以从源代码重新编译并安装内核,而无需启用 PAE。