El Fri, 23 Oct 2015 17:45:57 +0800 Rui Xiang <rui.xi...@huawei.com> escribió: > Hi，list > > I encounter a panic about init process. > > Kernel panic - not syncing: Attempted to kill init! > exitcode=0x00000007 > > Pid: 1, comm: init Tainted: G R O 3.4.24.19-0.11-default #1 > Call Trace: > [<ffffffff8144dd24>] panic+0xc1/0x1e2 > [<ffffffff8104483b>] do_exit+0x7db/0x8d0 > [<ffffffff81044c7a>] do_group_exit+0x3a/0xa0 > [<ffffffff8105394b>] get_signal_to_deliver+0x1ab/0x5e0 > [<ffffffff81002270>] do_signal+0x60/0x5f0 > [<ffffffff8145bf97>] ? do_page_fault+0x4a7/0x4d0 > [<ffffffff81170d2c>] ? poll_select_copy_remaining+0xec/0x140 > [<ffffffff81002885>] do_notify_resume+0x65/0x80 > [<ffffffff8124ca7e>] ? trace_hardirqs_on_thunk+0x3a/0x3c > [<ffffffff814587ab>] retint_signal+0x4d/0x92 > > The system has a little memory left, then reboot it, and get the > panic. >
Have you tried?: 1. Deleting the file etc/ld.so.cache 2. Doing a `sync' 3. Reboot > In our host, kswapd would be wake up while using a lot of memory, and > then reclaim some pages from init process. If we execute *"reboot"* > or *"reboot -f"* to reboot host through sysvinit, reboot process will > call sys_reboot and shut down the sas driver(disk), then will trigger > the panic of init process. > > As follow, > > HOST reboot > process init process use a lot of memory > wake up kswapd > reclaim some pages > (these pages are code segment > or data segment of init process) > from init thread (pid=1) > reboot > sys_reboot > shutdown > disk driver init thread read data from disk > > page_fault > > filemap_fault > > readpage > failed because the disk is closed return VM_FAULT_SIGBUS > > send > signal SIGBUS do_signal > > do_exit > > trigger > the panic > > > It seems that reboot or force reboot through *sysvinit* have the > problem. Furthermore, using reboot -f in *systemd* should also have > this problem, right? > > And is that a bug for current reboot process in sysvinit or systemd? > > All comments are welcome, thanks. > > -- GPG pub ID = 0x3AAF1CEC203A99D5 Key servers = hkps.pool.sks-keyservers.net - keys.gnupg.net Key fingerprint = 35BD B9D4 6B56 B5FA CB64 7C9B 3AAF 1CEC 203A 99D5
pgphm1Q7nBb8V.pgp
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