From: huang ying <huang.ying.caritas@gmail.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: mm-commits@vger.kernel.org, LKML <linux-kernel@vger.kernel.org>,
linux-mm@kvack.org, linux-fsdevel@vger.kernel.org,
linux-next@vger.kernel.org,
Stephen Rothwell <sfr@canb.auug.org.au>,
mhocko@suse.cz, Mark Brown <broonie@kernel.org>
Subject: Re: mmotm 2017-06-23-15-03 uploaded
Date: Tue, 27 Jun 2017 14:45:57 +0800 [thread overview]
Message-ID: <CAC=cRTNJe5Bo-1E+3oJEbWM8Yt5SyZOhnUiC9U5OK0GWrp1E0g@mail.gmail.com> (raw)
In-Reply-To: <594d905d.geNp0UO7DULvNDPS%akpm@linux-foundation.org>
On Sat, Jun 24, 2017 at 6:04 AM, <akpm@linux-foundation.org> wrote:
> * mm-page_allocc-eliminate-unsigned-confusion-in-__rmqueue_fallback.patch
After git bisecting, find the above patch will cause the following bug
on i386 with memory eater + swap.
[ 10.657876] BUG: unable to handle kernel paging request at 001fe2b8
[ 10.658412] IP: set_pfnblock_flags_mask+0x50/0x80
[ 10.658779] *pde = 00000000
[ 10.658779]
[ 10.659126] Oops: 0000 [#1] SMP
[ 10.659372] CPU: 0 PID: 1403 Comm: usemem Not tainted 4.12.0-rc6-mm1+ #12
[ 10.659888] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS 1.10.2-1 04/01/2014
[ 10.660522] task: f54a4c40 task.stack: f54ee000
[ 10.660878] EIP: set_pfnblock_flags_mask+0x50/0x80
[ 10.661246] EFLAGS: 00010006 CPU: 0
[ 10.661517] EAX: 0007f8ae EBX: 00000000 ECX: 00000009 EDX: 00000200
[ 10.661994] ESI: 001fe2b8 EDI: 00000e00 EBP: f54efd8c ESP: f54efd80
[ 10.662473] DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
[ 10.662891] CR0: 80050033 CR2: 001fe2b8 CR3: 356a3000 CR4: 00000690
[ 10.663378] Call Trace:
[ 10.663577] set_pageblock_migratetype+0x31/0x40
[ 10.663933] __rmqueue+0x367/0x560
[ 10.664197] get_page_from_freelist+0x5b7/0x8e0
[ 10.664546] __alloc_pages_nodemask+0x31a/0x1000
[ 10.664913] ? handle_mm_fault+0x1e8/0x840
[ 10.665230] handle_mm_fault+0x71d/0x840
[ 10.665537] __do_page_fault+0x175/0x400
[ 10.665848] ? vmalloc_sync_all+0x190/0x190
[ 10.666173] do_page_fault+0xb/0x10
[ 10.666446] common_exception+0x64/0x6a
[ 10.666742] EIP: 0x8005e04c
[ 10.666959] EFLAGS: 00010246 CPU: 0
[ 10.667229] EAX: 07d47400 EBX: 80063000 ECX: bfc964d8 EDX: 67179000
[ 10.667705] ESI: 07d47400 EDI: 07d47400 EBP: 00000000 ESP: bfc962cc
[ 10.668180] DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 007b
[ 10.668595] ? vmalloc_sync_all+0x190/0x190
[ 10.668922] Code: 8b 5b 28 25 00 fc ff ff 29 c1 89 c8 b9 1f 00 00
00 2b 4d 08 c1 e8 0a c1 e0 02 89 c6 c1 e8 05 83 e6 1f 29 f1 8d 34 83
d3 e7 d3 e2 <8b> 1e f7 d7 eb 0c 8d 76 00 8d bc 27 00 00 00 00 89 c3 89
d9 89
[ 10.670369] EIP: set_pfnblock_flags_mask+0x50/0x80 SS:ESP: 0068:f54efd80
[ 10.670881] CR2: 00000000001fe2b8
[ 10.671140] ---[ end trace f51518af57e6b531 ]---
I think this comes from the signed and unsigned int comparison on
i386. The gcc version is,
gcc (Debian 6.3.0-18) 6.3.0 20170516
Best Regards,
Huang, Ying
next prev parent reply other threads:[~2017-06-27 6:46 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-23 22:04 mmotm 2017-06-23-15-03 uploaded akpm
2017-06-27 6:45 ` huang ying [this message]
2017-06-27 7:01 ` Vlastimil Babka
2017-06-27 7:03 ` Vlastimil Babka
2017-06-27 7:38 ` Rasmus Villemoes
2017-06-27 20:40 ` Andrew Morton
2017-06-27 21:56 ` Stephen Rothwell
2017-06-27 22:00 ` Stephen Rothwell
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