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Date: Mon, 20 Mar 2017 17:37:04 +0800
From: kernel test robot <fengguang.wu@...el.com>
To: "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Cc: LKP <lkp@...org>, linux-mm@...ck.org,
linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
Ingo Molnar <mingo@...nel.org>, wfg@...ux.intel.com
Subject: [x86/mm/gup] 2947ba054a: kernel BUG at
include/linux/pagemap.h:151!
Greetings,
0day kernel testing robot got the below dmesg and the first bad commit is
https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/mm
commit 2947ba054a4dabbd82848728d765346886050029
Author: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
AuthorDate: Fri Mar 17 00:39:06 2017 +0300
Commit: Ingo Molnar <mingo@...nel.org>
CommitDate: Sat Mar 18 09:48:03 2017 +0100
x86/mm/gup: Switch GUP to the generic get_user_page_fast() implementation
This patch provides all required callbacks required by the generic
get_user_pages_fast() code and switches x86 over - and removes
the platform specific implementation.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Aneesh Kumar K . V <aneesh.kumar@...ux.vnet.ibm.com>
Cc: Borislav Petkov <bp@...en8.de>
Cc: Catalin Marinas <catalin.marinas@....com>
Cc: Dann Frazier <dann.frazier@...onical.com>
Cc: Dave Hansen <dave.hansen@...el.com>
Cc: H. Peter Anvin <hpa@...or.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Rik van Riel <riel@...hat.com>
Cc: Steve Capper <steve.capper@...aro.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: linux-arch@...r.kernel.org
Cc: linux-mm@...ck.org
Link: http://lkml.kernel.org/r/20170316213906.89528-1-kirill.shutemov@linux.intel.com
[ Minor readability edits. ]
Signed-off-by: Ingo Molnar <mingo@...nel.org>
73e10a6181 mm/gup: Provide callback to check if __GUP_fast() is allowed for the range
2947ba054a x86/mm/gup: Switch GUP to the generic get_user_page_fast() implementation
5b781c7e31 x86/tls: Forcibly set the accessed bit in TLS segments
319d085f9d Merge branch 'linus'
+------------------------------------------+------------+------------+------------+------------+
| | 73e10a6181 | 2947ba054a | 5b781c7e31 | 319d085f9d |
+------------------------------------------+------------+------------+------------+------------+
| boot_successes | 58 | 10 | 15 | 0 |
| boot_failures | 0 | 10 | 8 | 4 |
| kernel_BUG_at_include/linux/pagemap.h | 0 | 10 | 8 | 4 |
| invalid_opcode:#[##] | 0 | 10 | 8 | 4 |
| EIP:gup_pte_range | 0 | 10 | 8 | 4 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 10 | 8 | 4 |
+------------------------------------------+------------+------------+------------+------------+
[ 103.861936] trinity-c0 (17680) used greatest stack depth: 6220 bytes left
[ 104.871508] VFS: Warning: trinity-c0 using old stat() call. Recompile your binary.
[ 104.875821] VFS: Warning: trinity-c0 using old stat() call. Recompile your binary.
[ 105.093534] VFS: Warning: trinity-c0 using old stat() call. Recompile your binary.
[ 105.094331] ------------[ cut here ]------------
[ 105.094649] kernel BUG at include/linux/pagemap.h:151!
[ 105.095129] invalid opcode: 0000 [#1] DEBUG_PAGEALLOC
[ 105.095483] Modules linked in:
[ 105.095678] CPU: 0 PID: 17704 Comm: trinity-c0 Not tainted 4.11.0-rc2-00251-g2947ba0 #2
[ 105.096175] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.3-20161025_171302-gandalf 04/01/2014
[ 105.096801] task: 8538c000 task.stack: 85382000
[ 105.097120] EIP: gup_pte_range+0x3d6/0x5d0
[ 105.097384] EFLAGS: 00010046 CPU: 0
[ 105.097598] EAX: 80000000 EBX: 87c722b4 ECX: 8538a5b8 EDX: 00000000
[ 105.098048] ESI: 87c722b4 EDI: 0a085067 EBP: 85383dcc ESP: 85383db4
[ 105.098470] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068
[ 105.098867] CR0: 80050033 CR2: 00000001 CR3: 0d3a2000 CR4: 001406d0
[ 105.099310] DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
[ 105.099695] DR6: fffe0ff0 DR7: 00000400
[ 105.099946] Call Trace:
[ 105.100102] __get_user_pages_fast+0x184/0xce0
[ 105.100432] ? iov_iter_copy_from_user_atomic+0x112/0x630
[ 105.100846] get_user_pages_fast+0xe6/0x100
[ 105.101146] get_futex_key+0xb9/0xb40
[ 105.101391] ? sched_clock_cpu+0x4b/0x220
[ 105.101678] futex_requeue+0xf4/0xf80
[ 105.101955] ? kvm_sched_clock_read+0x2f/0x60
[ 105.102304] ? sched_clock_cpu+0x4b/0x220
[ 105.102556] do_futex+0x219/0x9b0
[ 105.102782] ? _raw_spin_unlock_irq+0x55/0xa0
[ 105.103147] ? do_setitimer+0x241/0x2e0
[ 105.103406] SyS_futex+0xd4/0x230
[ 105.103633] do_fast_syscall_32+0xdc/0x350
[ 105.103882] entry_SYSENTER_32+0x47/0x71
[ 105.104218] EIP: 0x6f72ace9
[ 105.104424] EFLAGS: 00000216 CPU: 0
[ 105.104637] EAX: ffffffda EBX: 6e96e000 ECX: 00000004 EDX: ffcaf288
[ 105.105012] ESI: 6e96e004 EDI: 6e96e004 EBP: c2000002 ESP: 7782628c
[ 105.105477] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b
[ 105.105830] Code: 76 ae 83 01 83 15 64 76 ae 83 00 0f 0b 83 05 68 76 ae 83 01 83 15 6c 76 ae 83 00 66 90 83 05 70 76 ae 83 01 83 15 74 76 ae 83 00 <0f> 0b 83 05 78 76 ae 83 01 83 15 7c 76 ae 83 00 66 90 83 05 80
[ 105.107091] EIP: gup_pte_range+0x3d6/0x5d0 SS:ESP: 0068:85383db4
[ 105.107491] ---[ end trace 0e829f50b87a4d13 ]---
[ 105.107810] Kernel panic - not syncing: Fatal exception
# HH:MM RESULT GOOD BAD GOOD_BUT_DIRTY DIRTY_NOT_BAD
git bisect start a41ec77333b436e39e3714ff6e4d2f0aa21aba33 97da3854c526d3a6ee05c849c96e48d21527606c --
git bisect good 964b23d17dbf0d2e7b178c9012ec44e8b92d42ef # 13:34 G 18 0 0 0 Merge 'linux-review/M-boumba-Cedric-Madianga/dt-bindings-i2c-stm32-Document-the-STM32F7-I2C-bindings/20170320-035116' into devel-spot-201703201131
git bisect good 84d0399460caf825e18c0a3d13c6586b588842c5 # 14:00 G 18 0 2 2 Merge 'saeed/net-rc' into devel-spot-201703201131
git bisect bad 7decaba89f3fb34d6734d5535d115959f038bacf # 14:16 B 0 7 18 0 Merge 'linux-review/Mark-Salter/Revert-tty-serial-pl011-add-ttyAMA-for-matching-pl011-console/20170319-171312' into devel-spot-201703201131
git bisect bad 0225f629890fffa831d45586ef9da07990e4d30e # 14:37 B 0 1 12 0 Merge 'linux-review/Hans-de-Goede/extcon-Allow-registering-a-single-notifier-for-all-cables-on-an-extcon_dev/20170319-204610' into devel-spot-201703201131
git bisect bad 99ef1e42dda6c901beaa7a57a104b4b68f2b3b28 # 14:51 B 0 1 12 0 Merge 'tip/x86/mm' into devel-spot-201703201131
git bisect good f06bdd4001c257792c54dce9427399f2896470af # 15:10 G 17 0 1 1 x86/mm: Adapt MODULES_END based on fixmap section size
git bisect good e7884f8ead4a301b04687a3238527b06feef8ea0 # 15:26 G 18 0 0 0 mm/gup: Move permission checks into helpers
git bisect good b59f65fa076a8eac2ff3a8ab7f8e1705b9fa86cb # 15:40 G 18 0 1 1 mm/gup: Implement the dev_pagemap() logic in the generic get_user_pages_fast() function
git bisect bad 2947ba054a4dabbd82848728d765346886050029 # 15:52 B 0 5 16 0 x86/mm/gup: Switch GUP to the generic get_user_page_fast() implementation
git bisect good 73e10a61817dfc97fe7418bfad1f608e562d7348 # 16:13 G 18 0 0 0 mm/gup: Provide callback to check if __GUP_fast() is allowed for the range
# first bad commit: [2947ba054a4dabbd82848728d765346886050029] x86/mm/gup: Switch GUP to the generic get_user_page_fast() implementation
git bisect good 73e10a61817dfc97fe7418bfad1f608e562d7348 # 16:17 G 53 0 0 0 mm/gup: Provide callback to check if __GUP_fast() is allowed for the range
# extra tests with CONFIG_DEBUG_INFO_REDUCED
git bisect bad 2947ba054a4dabbd82848728d765346886050029 # 16:32 B 8 10 0 0 x86/mm/gup: Switch GUP to the generic get_user_page_fast() implementation
# extra tests on HEAD of linux-devel/devel-spot-201703201131
git bisect bad a41ec77333b436e39e3714ff6e4d2f0aa21aba33 # 16:33 B 7 5 0 0 0day head guard for 'devel-spot-201703201131'
# extra tests on tree/branch tip/x86/mm
git bisect bad 5b781c7e317fcf9f74475dc82bfce2e359dfca13 # 16:53 B 0 1 12 0 x86/tls: Forcibly set the accessed bit in TLS segments
# extra tests with first bad commit reverted
git bisect good ebfa79a64457cb162e3ab9fd6d26cfdefd03e604 # 17:14 G 18 0 0 0 Revert "x86/mm/gup: Switch GUP to the generic get_user_page_fast() implementation"
# extra tests on tree/branch tip/master
git bisect bad 319d085f9de0d78317b08f0aa199ac10e2b0f3c2 # 17:35 B 0 4 15 0 Merge branch 'linus'
---
0-DAY kernel test infrastructure Open Source Technology Center
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