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Date: Fri, 2 Mar 2018 15:17:57 +0800
From: kernel test robot <fengguang.wu@...el.com>
To: Ilya Smith <blackzert@...il.com>
Cc: akpm@...ux-foundation.org, dan.j.williams@...el.com, mhocko@...e.com,
kirill.shutemov@...ux.intel.com, jack@...e.cz, jglisse@...hat.com,
hughd@...gle.com, willy@...radead.org, deller@....de,
aarcange@...hat.com, oleg@...hat.com, linux-mm@...ck.org,
linux-kernel@...r.kernel.org, kernel-hardening@...ts.openwall.com,
Ilya Smith <blackzert@...il.com>, lkp@...org
Subject: 097eb0af45: kernel_BUG_at_mm/hugetlb.c
FYI, we noticed the following commit (built with gcc-7):
commit: 097eb0af45c0010f9d5cbbc5f623058b3a275950 ("Randomization of address chosen by mmap.")
url: https://github.com/0day-ci/linux/commits/Ilya-Smith/Randomization-of-address-chosen-by-mmap/20180302-092859
base: git://git.cmpxchg.org/linux-mmotm.git master
in testcase: trinity
with following parameters:
runtime: 300s
test-description: Trinity is a linux system call fuzz tester.
test-url: http://codemonkey.org.uk/projects/trinity/
on test machine: qemu-system-x86_64 -enable-kvm -cpu host -smp 2 -m 1G
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
+------------------------------------------+------------+------------+
| | 745388a346 | 097eb0af45 |
+------------------------------------------+------------+------------+
| boot_successes | 6 | 9 |
| boot_failures | 0 | 4 |
| kernel_BUG_at_mm/hugetlb.c | 0 | 4 |
| invalid_opcode:#[##] | 0 | 4 |
| RIP:__unmap_hugepage_range | 0 | 4 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 4 |
+------------------------------------------+------------+------------+
[ 21.297686] kernel BUG at mm/hugetlb.c:3329!
[ 21.299026] invalid opcode: 0000 [#1] PREEMPT SMP PTI
[ 21.300197] CPU: 1 PID: 507 Comm: trinity-c3 Not tainted 4.16.0-rc2-mm1-00153-g097eb0a #101
[ 21.304957] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014
[ 21.306766] RIP: 0010:__unmap_hugepage_range+0x5f/0x274
[ 21.308305] RSP: 0018:ffffa333c0bf7d20 EFLAGS: 00010206
[ 21.309410] RAX: 00000000001fffff RBX: ffff8d51ff3a1170 RCX: 0000000000000009
[ 21.310950] RDX: 00007f6e7bf10000 RSI: ffff8d51ff3a1170 RDI: ffffa333c0bf7df0
[ 21.312471] RBP: 00007f6e7c110000 R08: 0000000000000000 R09: 00007f6e7c110000
[ 21.313961] R10: ffffa333c0bf7cc0 R11: 0000000000000000 R12: 00007f6e7bf10000
[ 21.315541] R13: ffffa333c0bf7df0 R14: ffff8d51fe8e06f8 R15: ffffffffa4ad4d20
[ 21.317080] FS: 0000000000000000(0000) GS:ffff8d51f5800000(0000) knlGS:0000000000000000
[ 21.318828] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 21.320055] CR2: 0000560f12c38000 CR3: 000000002a816000 CR4: 00000000000006e0
[ 21.322177] DR0: 00007f66fb684000 DR1: 0000000000000000 DR2: 0000000000000000
[ 21.324102] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[ 21.325642] Call Trace:
[ 21.326268] __unmap_hugepage_range_final+0x9/0x13
[ 21.327314] unmap_single_vma+0x8d/0xcd
[ 21.328143] unmap_vmas+0x30/0x3d
[ 21.328840] exit_mmap+0x93/0x13d
[ 21.329553] mmput+0x64/0xe5
[ 21.330227] do_exit+0x3f1/0x995
[ 21.330908] do_group_exit+0xad/0xad
[ 21.331691] SyS_exit_group+0xb/0xb
[ 21.332450] do_syscall_64+0x6d/0x103
[ 21.333246] entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[ 21.334358] RIP: 0033:0x6f45afc331c8
[ 21.335126] RSP: 002b:00007ffd436fcaa8 EFLAGS: 00000202 ORIG_RAX: 00000000000000e7
[ 21.336525] RAX: ffffffffffffffda RBX: 4a4a4a4a4a4a4a4a RCX: 00006f45afc331c8
[ 21.337836] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000
[ 21.339366] RBP: 00006bd156196064 R08: 00000000000000e7 R09: ffffffffffffff98
[ 21.340895] R10: 0000000000000207 R11: 0000000000000202 R12: 0000000000000045
[ 21.342406] R13: 000000000000001a R14: 0000560f120153a0 R15: 00000000cccccccd
[ 21.343895] Code: 07 00 00 4c 8b 78 58 b8 00 10 00 00 41 8b 4f 08 48 d3 e0 f6 46 52 40 48 89 04 24 75 02 0f 0b 49 8b 47 10 48 f7 d0 48 85 d0 74 02 <0f> 0b 4c 85 c8 74 02 0f 0b 8b 04 24 48 8b 6e 40 49 89 fc 4c 89
[ 21.346557] RIP: __unmap_hugepage_range+0x5f/0x274 RSP: ffffa333c0bf7d20
[ 21.348945] 01 00 00 00 48 00 00 00 04 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 08 00 00 00 00 00 00 00 39 f2 07 05 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 21.348955]
[ 21.350744] ---[ end trace 685bd0bde9f67ae5 ]---
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,
lkp
View attachment "config-4.16.0-rc2-mm1-00153-g097eb0a" of type "text/plain" (128670 bytes)
View attachment "job-script" of type "text/plain" (3811 bytes)
Download attachment "dmesg.xz" of type "application/x-xz" (15684 bytes)
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