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Date: Tue, 26 Sep 2017 10:15:36 +0800
From: kernel test robot <xiaolong.ye@...el.com>
To: Eric Biggers <ebiggers3@...il.com>
Cc: x86@...nel.org, linux-kernel@...r.kernel.org,
kernel-hardening@...ts.openwall.com,
Andy Lutomirski <luto@...nel.org>,
Dave Hansen <dave.hansen@...ux.intel.com>,
Dmitry Vyukov <dvyukov@...gle.com>,
Fenghua Yu <fenghua.yu@...el.com>, Ingo Molnar <mingo@...nel.org>,
Kevin Hao <haokexin@...il.com>, Oleg Nesterov <oleg@...hat.com>,
Wanpeng Li <wanpeng.li@...mail.com>,
Yu-cheng Yu <yu-cheng.yu@...el.com>,
Michael Halcrow <mhalcrow@...gle.com>,
Eric Biggers <ebiggers@...gle.com>, stable@...r.kernel.org,
lkp@...org
Subject: [lkp-robot] [x86/fpu] 14e633085a:
Kernel_panic-not_syncing:Attempted_to_kill_init!exitcode=
FYI, we noticed the following commit:
commit: 14e633085ab2716f757f0c3d994efe14e5fe604e ("x86/fpu: don't let userspace set bogus xcomp_bv")
url: https://github.com/0day-ci/linux/commits/Eric-Biggers/x86-fpu-prevent-leaking-FPU-registers-via-invalid-FPU-state/20170922-225341
in testcase: boot
on test machine: qemu-system-x86_64 -enable-kvm -m 420M
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
+-----------------------------------------------------------+------------+------------+
| | dc1fb16d0a | 14e633085a |
+-----------------------------------------------------------+------------+------------+
| boot_successes | 10 | 0 |
| boot_failures | 0 | 4 |
| Kernel_panic-not_syncing:Attempted_to_kill_init!exitcode= | 0 | 4 |
+-----------------------------------------------------------+------------+------------+
[ 6.272786] init: Console is alive
[ 6.273405] init: - watchdog -
[ 6.275390] kmodloader (122) used greatest stack depth: 14352 bytes left
[ 7.274437] init: - preinit -
[ 7.286014] init[1] bad frame in 32bit sigreturn frame:00000000fff5eb2c ip:f7f369b5 sp:fff5f08c orax:ffffffffffffffff in libuClibc-0.9.33.2.so[f7f2c000+4f000]
[ 7.288482] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
[ 7.288482]
[ 7.289898] CPU: 0 PID: 1 Comm: init Not tainted 4.14.0-rc1-00021-g14e6330 #38
[ 7.290988] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.3-20161025_171302-gandalf 04/01/2014
[ 7.292562] Call Trace:
[ 7.292960] dump_stack+0x61/0x7e
[ 7.293485] panic+0xd3/0x20f
[ 7.293967] do_exit+0x4f2/0x983
[ 7.294440] do_group_exit+0x45/0xb0
[ 7.294966] get_signal+0x4b8/0x4e4
[ 7.295483] do_signal+0x23/0x5bc
[ 7.295964] ? force_sig_info+0xc6/0xd5
[ 7.296521] ? force_sig+0x11/0x13
[ 7.297027] ? signal_fault+0xb8/0xc1
[ 7.297557] exit_to_usermode_loop+0x3a/0x72
[ 7.298178] do_int80_syscall_32+0xe9/0xfe
[ 7.298784] entry_INT80_compat+0x2a/0x40
[ 7.299374] RIP: 0023:0xf7f369b5
[ 7.299848] RSP: 002b:00000000fff5f08c EFLAGS: 00000246
[ 7.300587] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00000000f7fb670c
[ 7.301609] RDX: 000000000000000a RSI: 0000000000000f9f RDI: 0000000000000fa0
[ 7.302624] RBP: 00000000fff5f0f8 R08: 0000000000000000 R09: 0000000000000000
[ 7.303631] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[ 7.304666] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[ 7.305677] Kernel Offset: 0x7000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
Elapsed time: 10
To reproduce:
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email
Thanks,
Xiaolong
View attachment "config-4.14.0-rc1-00021-g14e6330" of type "text/plain" (125960 bytes)
View attachment "job-script" of type "text/plain" (4038 bytes)
Download attachment "dmesg.xz" of type "application/x-xz" (12848 bytes)
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