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Message-ID: <20170627033414.chxwdvlvc2smnm3s@wfg-t540p.sh.intel.com>
Date: Tue, 27 Jun 2017 11:34:14 +0800
From: Fengguang Wu <fengguang.wu@...el.com>
To: "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Cc: Ingo Molnar <mingo@...nel.org>, linux-kernel@...r.kernel.org,
LKP <lkp@...org>
Subject: c88d71508e ("x86/boot/64: Rewrite startup_64() in C"): BUG: kernel
reboot-without-warning in boot stage
Hi Kirill,
FYI this bug is still active in tip/master:
https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/mm
commit c88d71508e36b514413464bd2e01f96f34583a0e
Author: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
AuthorDate: Tue Jun 6 14:31:26 2017 +0300
Commit: Ingo Molnar <mingo@...nel.org>
CommitDate: Tue Jun 13 08:56:54 2017 +0200
x86/boot/64: Rewrite startup_64() in C
The patch write most of startup_64 logic in C.
This is preparation for 5-level paging enabling.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Andy Lutomirski <luto@...capital.net>
Cc: Andy Lutomirski <luto@...nel.org>
Cc: Borislav Petkov <bp@...en8.de>
Cc: Brian Gerst <brgerst@...il.com>
Cc: Dave Hansen <dave.hansen@...el.com>
Cc: Denys Vlasenko <dvlasenk@...hat.com>
Cc: H. Peter Anvin <hpa@...or.com>
Cc: Josh Poimboeuf <jpoimboe@...hat.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: linux-arch@...r.kernel.org
Cc: linux-mm@...ck.org
Link: http://lkml.kernel.org/r/20170606113133.22974-8-kirill.shutemov@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@...nel.org>
34bbb0009f x86/boot/compressed: Enable 5-level paging during decompression stage
c88d71508e x86/boot/64: Rewrite startup_64() in C
4a06370bcb x86/mmap, ASLR: Do not treat unlimited-stack tasks as legacy mmap
db0a91afe9 Merge branch 'irq/core'
a73468728f Add linux-next specific files for 20170623
+----------------------------------------------------+------------+------------+------------+------------+---------------+
| | 34bbb0009f | c88d71508e | 4a06370bcb | db0a91afe9 | next-20170623 |
+----------------------------------------------------+------------+------------+------------+------------+---------------+
| boot_successes | 119 | 0 | 0 | 0 | 0 |
| boot_failures | 1 | 26 | 41 | 25 | 83 |
| WARNING:at_mm/page_alloc.c:#__alloc_pages_slowpath | 1 | | | | |
| BUG:kernel_reboot-without-warning_in_boot_stage | 0 | 26 | 41 | 25 | 83 |
+----------------------------------------------------+------------+------------+------------+------------+---------------+
Decompressing Linux... Parsing ELF... Performing relocations... done.
Booting the kernel.
# HH:MM RESULT GOOD BAD GOOD_BUT_DIRTY DIRTY_NOT_BAD
git bisect start 8b613ccb9d932ec8d5f72dd9a5b8e5616f3a0941 v4.11 --
git bisect good deac8429d62ca19c1571853e2a18f60e760ee04c # 02:42 G 11 0 0 0 Merge tag 'sound-fix-4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
git bisect good f56f88ee3fa1c3080f6ba122a597e75f0d5ab969 # 02:56 G 11 0 0 0 Merge branch 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect good 42211f6cb6d7c3a39fe9b2892a93e4c065149d5f # 03:10 G 11 0 0 0 Merge branch 'for-linus' of git://git.kernel.dk/linux-block
git bisect good 6d53cefb18e4646fb4bf62ccb6098fb3808486df # 03:30 G 11 0 0 0 compiler, clang: properly override 'inline' for clang
git bisect good f7f5712fcaba9543708804f01fa347fc3936c04a # 03:35 G 10 0 0 0 Merge branch 'ras/core'
git bisect good a4a635ee9c874867a07154f0d21109612ee5592b # 04:05 G 11 0 0 0 Merge branch 'timers/nohz'
git bisect good 514808e1b992ea2201e933b061bdb659957754eb # 04:12 G 11 0 0 0 Merge branch 'x86/boot'
git bisect bad d8c2c6b7e2506350646af1e4e8b1472f114fbc6c # 04:20 B 0 11 81 36 Merge branch 'x86/mm'
git bisect good bbf79d21bd4627a01ca8721c9373752819f8e4cc # 04:35 G 11 0 0 0 x86/ldt: Rename ldt_struct::size to ::nr_entries
git bisect good 919a02d1280a3845bac70e6b7891ca070f21a60a # 04:45 G 11 0 0 0 x86/boot/efi: Define __KERNEL32_CS GDT on 64-bit configurations
git bisect bad 032370b9c81f44b3aaadf3115d550f4b6b5fa2b9 # 04:51 B 0 11 78 30 x86/boot/64: Add support of additional page table level during early boot
git bisect bad c88d71508e36b514413464bd2e01f96f34583a0e # 04:51 B 0 26 67 0 x86/boot/64: Rewrite startup_64() in C
git bisect good 34bbb0009f3b7a5eef1ab34f14e5dbf7b8fc389c # 05:07 G 16 0 0 2 x86/boot/compressed: Enable 5-level paging during decompression stage
# first bad commit: [c88d71508e36b514413464bd2e01f96f34583a0e] x86/boot/64: Rewrite startup_64() in C
git bisect good 34bbb0009f3b7a5eef1ab34f14e5dbf7b8fc389c # 05:12 G 47 0 0 2 x86/boot/compressed: Enable 5-level paging during decompression stage
# extra tests on HEAD of linux-review/jglisse-redhat-com/x86-mm-hotplug-fix-BUG_ON-after-hotremove-by-not-freeing-pud-v3/20170626-012348
git bisect bad 5bf715cc5f1a53ee61f1ac08eec750dc190bec79 # 05:12 B 0 25 51 0 x86/mm/hotplug: fix BUG_ON() after hotremove by not freeing pud v3
# extra tests on tree/branch tip/x86/mm
git bisect bad 4a06370bcb674af88679a4f2c5c87c3e40688935 # 05:13 B 0 41 94 0 x86/mmap, ASLR: Do not treat unlimited-stack tasks as legacy mmap
# extra tests on tree/branch tip/master
git bisect bad db0a91afe937a3001c4f177ba1c262fe7b9d0ab6 # 05:13 B 0 25 62 0 Merge branch 'irq/core'
# extra tests on tree/branch linux-next/master
git bisect bad a73468728fd8f34ccbd7c60f0808024ae491f4d6 # 05:15 B 0 83 178 0 Add linux-next specific files for 20170623
---
0-DAY kernel test infrastructure Open Source Technology Center
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