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Date: Tue, 10 Oct 2017 20:15:13 +0800
From: kernel test robot <xiaolong.ye@...el.com>
To: Josh Poimboeuf <jpoimboe@...hat.com>
Cc: Ingo Molnar <mingo@...nel.org>, Andy Lutomirski <luto@...nel.org>,
Borislav Petkov <bp@...en8.de>,
Brian Gerst <brgerst@...il.com>,
Denys Vlasenko <dvlasenk@...hat.com>,
"H. Peter Anvin" <hpa@...or.com>, Jiri Slaby <jslaby@...e.cz>,
Linus Torvalds <torvalds@...ux-foundation.org>,
Mike Galbraith <efault@....de>,
Peter Zijlstra <peterz@...radead.org>,
Thomas Gleixner <tglx@...utronix.de>,
LKML <linux-kernel@...r.kernel.org>, lkp@...org
Subject: [lkp-robot] [x86/kconfig] 81d3871900: BUG:unable_to_handle_kernel
FYI, we noticed the following commit (built with gcc-4.8):
commit: 81d387190039c14edac8de2b3ec789beb899afd9 ("x86/kconfig: Consolidate unwinders into multiple choice selection")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
in testcase: boot
on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -m 512M
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
+------------------------------------------+------------+------------+
| | a34a766ff9 | 81d3871900 |
+------------------------------------------+------------+------------+
| boot_successes | 24 | 5 |
| boot_failures | 12 | 31 |
| BUG:kernel_hang_in_test_stage | 12 | 1 |
| BUG:unable_to_handle_kernel | 0 | 30 |
| Oops:#[##] | 0 | 30 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 30 |
+------------------------------------------+------------+------------+
[ 5.324797] BUG: unable to handle kernel paging request at ffff88001c4b0000
[ 5.326126] IP: slob_free+0x2bf/0x3d7
[ 5.328023] PGD 17d9c067
[ 5.328023] P4D 17d9c067
[ 5.328023] PUD 17d9d067
[ 5.328023] PMD 1f91e067
[ 5.328023] PTE 800000001c4b0060
[ 5.328023]
[ 5.328023] Oops: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC
[ 5.328023] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.13.0-rc1-00044-g81d3871 #1
[ 5.328023] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
[ 5.328023] task: ffff8800002fa000 task.stack: ffffc900000d0000
[ 5.328023] RIP: 0010:slob_free+0x2bf/0x3d7
[ 5.328023] RSP: 0000:ffffc900000d3d58 EFLAGS: 00010002
[ 5.328023] RAX: 0000000000000027 RBX: ffff88001c4affb0 RCX: 0000000000000000
[ 5.328023] RDX: ffff88001c4af000 RSI: 0000000000000000 RDI: ffff88001c4afffe
[ 5.328023] RBP: ffff88001c4afffe R08: 0000000000000001 R09: 0000000000000000
[ 5.328023] R10: ffffea000069a420 R11: ffff88001ffdb000 R12: ffff88001c4aff5c
[ 5.328023] R13: 0000000000000027 R14: 0000000000000027 R15: 0000000000000027
[ 5.328023] FS: 0000000000000000(0000) GS:ffff88001f600000(0000) knlGS:0000000000000000
[ 5.328023] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5.328023] CR2: ffff88001c4b0000 CR3: 0000000016211000 CR4: 00000000000406b0
[ 5.328023] Call Trace:
[ 5.328023] ? link_target+0xb2/0xc7
[ 5.328023] kfree+0x158/0x1b6
[ 5.328023] link_target+0xb2/0xc7
[ 5.328023] new_node+0x32b/0x4d1
[ 5.328023] gcov_event+0x33e/0x546
[ 5.328023] ? gcov_persist_setup+0xbb/0xbb
[ 5.328023] gcov_enable_events+0x3c/0x89
[ 5.328023] gcov_fs_init+0x134/0x191
[ 5.328023] do_one_initcall+0x10e/0x2df
[ 5.328023] kernel_init_freeable+0x3ec/0x559
[ 5.328023] ? rest_init+0x145/0x145
[ 5.328023] kernel_init+0xc/0x1a8
[ 5.328023] ret_from_fork+0x2a/0x40
[ 5.328023] Code: e8 8d f7 ff ff 48 ff 05 c9 8c 91 02 85 c0 75 51 49 0f bf c5 48 ff 05 c2 8c 91 02 48 8d 3c 43 48 39 ef 75 3d 48 ff 05 ba 8c 91 02 <8b> 6d 00 66 85 ed 7e 09 48 ff 05 b3 8c 91 02 eb 05 bd 01 00 00
[ 5.328023] RIP: slob_free+0x2bf/0x3d7 RSP: ffffc900000d3d58
[ 5.328023] CR2: ffff88001c4b0000
[ 5.328023] ---[ end trace f8ee1579929b04f0 ]---
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-4.13.0-rc1-00044-g81d3871" of type "text/plain" (90605 bytes)
View attachment "job-script" of type "text/plain" (4150 bytes)
Download attachment "dmesg.xz" of type "application/x-xz" (7952 bytes)
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