From: Konstantin Khlebnikov <koct9i@gmail.com>
To: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: Stefan Priebe - Profihost AG <s.priebe@profihost.ag>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
Sasha Levin <sasha.levin@oracle.com>,
Hugh Dickins <hughd@google.com>
Subject: Re: kernel 3.18.10: THP refcounting bug
Date: Wed, 1 Apr 2015 23:10:45 +0300 [thread overview]
Message-ID: <CALYGNiP=1LqATiTe9cgdEhhGFDYe_U-iLG9DwX6isCFicOekLQ@mail.gmail.com> (raw)
In-Reply-To: <20150401134132.GB17886@node.dhcp.inet.fi>
On Wed, Apr 1, 2015 at 4:41 PM, Kirill A. Shutemov <kirill@shutemov.name> wrote:
> On Wed, Apr 01, 2015 at 01:53:51PM +0200, Stefan Priebe - Profihost AG wrote:
>> Hi,
>>
>> while using 3.18.9 i got several times the following stack trace:
>>
>> kernel BUG at mm/filemap.c:203!
>> invalid opcode: 0000 [#1] SMP
>> Modules linked in: dm_mod netconsole usbhid sd_mod sg ata_generic
>> virtio_net virtio_scsi uhci_hcd ehci_hcd usbcore virtio_pci usb_common
>> virtio_ring ata_piix virtio floppy
>> CPU: 3 PID: 1 Comm: busybox Tainted: G B 3.18.9 #1
As I see this isn't first oops -> kernel already tainted with 'B'
Bad-page-state.
Please look at first splash where is no 'B' flag.
>> Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
>> rel-1.7.5.1-0-g8936dbb-20141113_115728-nilsson.home.kraxel.org 04/01/2014
>> task: ffff880137b98000 ti: ffff880137b94000 task.ti: ffff880137b94000
>> RIP: 0010:[<ffffffff81134495>] [<ffffffff81134495>]
>> __delete_from_page_cache+0x2b5/0x2c0
>> RSP: 0018:ffff880137b97be8 EFLAGS: 00010046
>> RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00000000ffffffd0
>> RDX: 0000000000000030 RSI: 000000000000000a RDI: ffff88013f9696c0
>> RBP: ffff880137b97c38 R08: 0000000000000000 R09: ffffea0002e927c0
>> R10: ffff8800bba92da0 R11: ffff880137b97c00 R12: ffffea0002e92480
>> R13: ffff8800bba8c4c8 R14: 0000000000000000 R15: ffff8800bba8c4d0
>> FS: 00007f5a79e0b700(0000) GS:ffff880139060000(0000) knlGS:0000000000000000
>> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>> CR2: 00000000023c3138 CR3: 00000000b84ba000 CR4: 00000000000006e0
>> Stack:
>> 000000000000000e ffff880137b97d48 ffff8800bba92da0 ffff8800bba92dc8
>> ffff880137b97c68 ffffea0002e92480 ffff8800bba8c4c8 0000000000000000
>> 0000000000000000 0000000000000000 ffff880137b97c68 ffffffff81134604
>> Call Trace:
>> [<ffffffff81134604>] delete_from_page_cache+0x44/0x70
>> [<ffffffff811413cb>] truncate_inode_page+0x5b/0x90
>> [<ffffffff811415a4>] truncate_inode_pages_range+0x1a4/0x6c0
>> [<ffffffff81141b45>] truncate_inode_pages+0x15/0x20
>> [<ffffffff81141c4c>] truncate_inode_pages_final+0x3c/0x50
>> [<ffffffff811bb83c>] evict+0x16c/0x180
>> [<ffffffff811bbed5>] iput+0x105/0x190
>> [<ffffffff811b0c19>] do_unlinkat+0x189/0x2b0
>> [<ffffffff811b1a46>] SyS_unlink+0x16/0x20
>> [<ffffffff815f6592>] system_call_fastpath+0x12/0x17
>> Code: 66 0f 1f 44 00 00 48 8b 75 c0 4c 89 ff e8 e4 5d 1f 00 84 c0 0f 85
>> 5e fe ff ff e9 41 fe ff ff 0f 1f 80 00 00 00 00 e8 75 70 4b 00 <0f> 0b
>> 66 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 83 e2 fd 48
>> RIP [<ffffffff81134495>] __delete_from_page_cache+0x2b5/0x2c0
>> RSP <ffff880137b97be8>
>> ---[ end trace a4727cb71335dbd4 ]---
>>
>> Is this a known bug?
>
> +Hugh, Konstantin.
>
> Nothing I recognize. Looks somewhat like[1], but not really.
>
> Do you have a way to reproduce? What fs it was?
>
> [1] lkml.kernel.org/g/20140603042121.GA27177@redhat.com
>
> --
> Kirill A. Shutemov
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next prev parent reply other threads:[~2015-04-01 20:10 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <551BBE1A.4040404@profihost.ag>
[not found] ` <20150401113122.GA17153@node.dhcp.inet.fi>
2015-04-01 11:53 ` kernel 3.18.10: THP refcounting bug Stefan Priebe - Profihost AG
2015-04-01 13:41 ` Kirill A. Shutemov
2015-04-01 20:09 ` Hugh Dickins
2015-04-01 20:10 ` Konstantin Khlebnikov [this message]
[not found] ` <551BDB8F.4070707@profihost.ag>
[not found] ` <551C12CC.3000803@oracle.com>
[not found] ` <551C39EE.90504@profihost.ag>
2015-04-01 20:13 ` Sasha Levin
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