今天公司一台安裝 FC7 的 Linux 主機突然出現無法連線的問題,也無法遠端 SSH 登入,到本機查看,發現下列訊息.....
BUG: warning at kernel/softirq.c:138/local_bh_enbale() (Not tainted)
[<c042b0cf>] local_bh_enable+0x45/0x92
[<c06002bd>] cond_resched_softirq+0x2c/0x42
[<c059adf3>] release_sock+0x4f/0x9d
[<c05c670d>] tcp_sendmsg+0x90b/0x9f9
[<c04808a3>] core_sys_select+0x1df/0x2f3
[<c05dec95>] init_sendmsg+0x3b/0x45
[<c0598731>] sock_aio_write+0xf6/0x102
[<c045b740>] generic_file_aio_write+0x5e/0xb3
[<c043ad9a>] clocksource_get_next+0x39/0x3f
[<c04754ee>] do_sync_write+0xc7/0x10a
[<c042e38b>] do_timer+0x4f2/0x6f3
[<c0436e71>] autoremove_wake_function+0x0/0x35
[<c0475d47>] vfs_write+0xbc/0x154
[<c0476342>] sys_write+0x41/0x67
[<c0404f70>] syscall_call+0x7/0x5
=======================
[<c042b0cf>] local_bh_enable+0x45/0x92
[<c06002bd>] cond_resched_softirq+0x2c/0x42
[<c059adf3>] release_sock+0x4f/0x9d
[<c05c670d>] tcp_sendmsg+0x90b/0x9f9
[<c04808a3>] core_sys_select+0x1df/0x2f3
[<c05dec95>] init_sendmsg+0x3b/0x45
[<c0598731>] sock_aio_write+0xf6/0x102
[<c045b740>] generic_file_aio_write+0x5e/0xb3
[<c043ad9a>] clocksource_get_next+0x39/0x3f
[<c04754ee>] do_sync_write+0xc7/0x10a
[<c042e38b>] do_timer+0x4f2/0x6f3
[<c0436e71>] autoremove_wake_function+0x0/0x35
[<c0475d47>] vfs_write+0xbc/0x154
[<c0476342>] sys_write+0x41/0x67
[<c0404f70>] syscall_call+0x7/0x5
=======================
clocksource tsc unstable
連本機都無法登入,只能強制重新開機,上網問了一下 google,發現這個問題大部出現在 Kernel 2.6.21-1.3189.fc7,很多人都建議升級 Kernel,目前已將 Kernel 升級至 kernel.i686 2.6.22.4-65.fc7,後續再觀察看看囉。
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