So I don't think this is a kernel related issue. The error message "error while loading shared library" is being emitted from the libc "fatal_error" shared library dynamic loader from init and an exit() is being called, causing the kernel to report that init has exited, which leads to the stack dump and the shutdown failure.
I suspect that there is some kind of race on shutdown causing systemd to be unable to load a necessary shared library (perhaps the file system is unmounted prematurely?) causing process 1 fail and hence to exit. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-azure in Ubuntu. https://bugs.launchpad.net/bugs/1822118 Title: Kernel Panic while rebooting cloud instance Status in linux-azure package in Ubuntu: In Progress Bug description: Description: In the event a particular Azure cloud instance is rebooted it's possible that it may never recover and the instance will break indefinitely. In My case, it was a kernel panic. See specifics below.. Series: Disco Instance Size: Basic_A3 Region: (Default) US-WEST-2 Kernel Version: 4.18.0-1013-azure #13-Ubuntu SMP Thu Feb 28 22:54:16 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux I had a simple script to reboot an instance (X) amount of times, I chose 50, so the machine would power cycle by issuing a "reboot" from the terminal prompt just as a user would. Once the machine came up, it captured dmesg and other bits then rebooted again until it reached 50. After the 4th attempt, my script timed out, I took a look at the instance console log and the following displayed on the console. [ OK ] Reached target Reboot. /shutdown: error while loading shared libra[ 89.498980] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00007f00 [ 89.498980] [ 89.500042] CPU: 0 PID: 1 Comm: shutdown Not tainted 4.18.0-1013-azure #13-Ubuntu [ 89.508026] Hardware name: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS 090007 06/02/2017 [ 89.508026] Call Trace: [ 89.508026] dump_stack+0x63/0x8a [ 89.508026] panic+0xe7/0x247 [ 89.508026] do_exit.cold.23+0x26/0x75 [ 89.508026] do_group_exit+0x43/0xb0 [ 89.508026] __x64_sys_exit_group+0x18/0x20 [ 89.508026] do_syscall_64+0x5a/0x110 [ 89.508026] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 89.508026] RIP: 0033:0x7f7bf0154d86 [ 89.508026] Code: Bad RIP value. [ 89.508026] RSP: 002b:00007ffd6be693b8 EFLAGS: 00000206 ORIG_RAX: 00000000000000e7 [ 89.508026] RAX: ffffffffffffffda RBX: 00007f7bf015e420 RCX: 00007f7bf0154d86 [ 89.508026] RDX: 000000000000007f RSI: 000000000000003c RDI: 000000000000007f [ 89.508026] RBP: 00007f7bef9449c0 R08: 00000000000000e7 R09: 00000000ffffffff [ 89.508026] R10: 00007ffd6be6974c R11: 0000000000000206 R12: 0000000000000018 [ 89.508026] R13: 00007f7bef944ac8 R14: 00007f7bef944a00 R15: 0000000000000000 [ 89.508026] Kernel Offset: 0x16000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 89.508026] ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x00007f00 [ 89.508026] ]--- this only occurred once in my testing. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-azure/+bug/1822118/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
