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Date: Sat, 5 May 2018 09:04:29 +0800
From: Fengguang Wu <fengguang.wu@...el.com>
To: Pavel Tatashin <pasha.tatashin@...cle.com>
Cc: Andy Shevchenko <andy.shevchenko@...il.com>,
Andrei Vagin <avagin@...tuozzo.com>,
Steven Sistare <steven.sistare@...cle.com>,
Daniel Jordan <daniel.m.jordan@...cle.com>,
Andrew Morton <akpm@...ux-foundation.org>,
LKML <linux-kernel@...r.kernel.org>,
Thomas Gleixner <tglx@...utronix.de>,
Michal Hocko <mhocko@...e.com>,
Linux Memory Management List <linux-mm@...ck.org>,
mgorman@...hsingularity.net, Ingo Molnar <mingo@...nel.org>,
"Peter Zijlstra (Intel)" <peterz@...radead.org>,
Steven Rostedt <rostedt@...dmis.org>,
Dennis Zhou <dennisszhou@...il.com>,
Ye Xiaolong <xiaolong.ye@...el.com>, LKP <lkp@...org>
Subject: Re: [v2] mm: access to uninitialized struct page
Hi Pavel,
FYI here is 0day's bisect result. The attached dmesg has reproduce
script at the bottom.
[27e2ce5dba4c30db031744c8140675d03d2ae7aa] mm: access to uninitialized struct page
git://git.cmpxchg.org/linux-mmotm.git devel-catchup-201805041701
git bisect start 53eff77ad4b0adaf1ca6e1ecc6acf3804c344531 6da6c0db5316275015e8cc2959f12a17584aeb64 --
git bisect bad 3fc24705ffb48c18b23ce2c229f5018d39b18ab0 # 20:22 B 2Merge 'djwong-xfs/djwong-devel' into devel-catchup-201805041701
git bisect bad 78bd9ee71ffbbe5ab169cbe469503af2dfb913f9 # 20:35 B 2Merge 'linux-review/Geert-Uytterhoeven/dt-bindings-can-rcar_can-Fix-R8A7796-SoC-name/20180504-154952' into devel-catchup-201805041701
git bisect bad 1deba87932c5d0adcffe63d8ce4847f39e864775 # 20:56 B 2Merge 'yhuang/fix_thp_swap' into devel-catchup-201805041701
git bisect good e0997365e1e89e8bc9f5ed4a58a6cd2500b58668 # 21:09 G 20day base guard for 'devel-catchup-201805041701'
git bisect bad 98815bfa9156a8d1da1f1ca5f3748e250fa19a88 # 21:22 B 2Merge 'yhuang/thp_delay_split3_r1a' into devel-catchup-201805041701
git bisect good 6da6c0db5316275015e8cc2959f12a17584aeb64 # 21:22 G 3Linux v4.17-rc3
git bisect bad 97c561bb48a33e135a90573c596bc755ed4eab32 # 21:36 B 2mm, pagemap: Hide swap entry for unprivileged users
git bisect bad 466b08a3a87e8e43af677375a4cf8eb105f50007 # 21:47 B 2mm, swap: fix race between swapoff and some swap operations
git bisect bad 44ea77b7788384a7c27a960ec5752de08e47882a # 21:58 B 2zram-introduce-zram-memory-tracking-fix
git bisect bad 7a53abd52e920e8a2c16ea2cb81439e6e87a7ea4 # 22:06 B 2prctl: add PR_[GS]ET_PDEATHSIG_PROC
git bisect good 1fda92fccc022924575edb98191f1ad2c0477c31 # 22:15 G 2z3fold-fix-reclaim-lock-ups-checkpatch-fixes
git bisect bad 685cc80b632235416b72869247df7d6ae2816d61 # 22:30 B 2mm: migrate: fix double call of radix_tree_replace_slot()
git bisect bad 27e2ce5dba4c30db031744c8140675d03d2ae7aa # 22:55 B 2mm: access to uninitialized struct page
git bisect good 7a0e68e17b8aa41aa33e8c80015e36d47dde390a # 23:11 G 2mm: sections are not offlined during memory hotremove
# extra tests on first bad commit
# bad: [27e2ce5dba4c30db031744c8140675d03d2ae7aa] mm: access to uninitialized struct page
# extra tests on parent commit
# good: [7a0e68e17b8aa41aa33e8c80015e36d47dde390a] mm: sections are not offlined during memory hotremove
tests: 2
testcase/path_params/tbox_group/run: boot/1/vm-vp-quantal-x86_64
7a0e68e17b8aa41a 27e2ce5dba4c30db031744c814
---------------- --------------------------
fail:runs %reproduction fail:runs
| | |
:2 100% 2:2 dmesg.BUG:kernel_reboot-without-warning_in_boot_stage
testcase/path_params/tbox_group/run: boot/1/vm-lkp-nex04-yocto-x86_64
7a0e68e17b8aa41a 27e2ce5dba4c30db031744c814
---------------- --------------------------
:4 100% 4:4 dmesg.BUG:kernel_reboot-without-warning_in_boot_stage
Thanks,
Fengguang
Download attachment "dmesg.xz" of type "application/x-xz" (8764 bytes)
View attachment "config-4.17.0-rc3-00012-g27e2ce5" of type "text/plain" (116141 bytes)
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