From: Richard Weinberger <richard@nod.at>
To: "Wiedemer, Thorsten (Lawo AG)" <Thorsten.Wiedemer@lawo.com>
Cc: "linux-mtd@lists.infradead.org" <linux-mtd@lists.infradead.org>
Subject: Re: UBI leb_write_unlock NULL pointer Oops (continuation)
Date: Mon, 03 Feb 2014 12:02:05 +0100 [thread overview]
Message-ID: <52EF772D.8080207@nod.at> (raw)
In-Reply-To: <D7B1B5F4F3F27A4CB073BF422331203F2A18997F8B@Exchange1.lawo.de>
Hi,
Am 03.02.2014 11:31, schrieb Wiedemer, Thorsten (Lawo AG):
> Hi,
>
> here the log of the kernel oops:
>
> Dec 25 03:59:22 kernel: Unable to handle kernel NULL pointer dereference at virtual address 0000000c
> Dec 25 03:59:22 kernel: pgd = c7148000
> Dec 25 03:59:22 kernel: [0000000c] *pgd=8709b831, *pte=00000000, *ppte=00000000
> Dec 25 03:59:22 kernel: Internal error: Oops: 17 [#1] PREEMPT ARM
> Dec 25 03:59:22 kernel: Modules linked in:
> Dec 25 03:59:22 kernel: CPU: 0 Tainted: G O (3.6.11 #1)
> Dec 25 03:59:22 kernel: PC is at __up_write+0x3c/0x1a8
> Dec 25 03:59:22 kernel: LR is at __up_write+0x24/0x1a8
> Dec 25 03:59:22 kernel: pc : [<c0229400>] lr : [<c02293e8>] psr: a0000093
> Dec 25 03:59:22 kernel: sp : c7225cc8 ip : 00020000 fp : c79fba00
> Dec 25 03:59:22 kernel: r10: 00000523 r9 : 00000001 r8 : c7b33000
> Dec 25 03:59:22 kernel: r7 : c793a800 r6 : c7bd473c r5 : c7bd4738 r4 : c7bd4720
> Dec 25 03:59:22 kernel: r3 : 00000000 r2 : 00000002 r1 : 00000001 r0 : 00000002
> Dec 25 03:59:22 kernel: Flags: NzCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment user
> Dec 25 03:59:22 kernel: Control: 0005317f Table: 87148000 DAC: 00000015
> Dec 25 03:59:22 kernel: Process Master (pid: 739, stack limit = 0xc7224270)
> Dec 25 03:59:22 kernel: Stack: (0xc7225cc8 to 0xc7226000)
> Dec 25 03:59:22 kernel: 5cc0: c7b33000 60000013 00001000 c7bd4720 c7224038 00000523
> Dec 25 03:59:22 kernel: 5ce0: c793a800 c7b33000 00000001 00000523 c79fba00 c02d0618 0001e800 0000071c
> Dec 25 03:59:22 kernel: 5d00: 00000523 00000000 c793a800 c02d0d10 00000800 00000523 00000001 c7271700
> Dec 25 03:59:22 kernel: 5d20: 00000000 c7b33000 00000000 c7b2f1a8 00000a28 00000523 00000001 c01e03e4
> Dec 25 03:59:22 kernel: 5d40: 00000000 00000800 00000523 00000001 00000080 c7b33000 c7592a90 c7abd504
> Dec 25 03:59:22 kernel: 5d60: c7abd4b4 c02cfbd4 00000800 00000800 c7b2f000 c7b33000 00000800 00000523
> Dec 25 03:59:22 kernel: 5d80: c7abd508 c01da97c 00000800 c7abd4b4 c7b33000 c7abd490 c7b2f000 c7abd490
> Dec 25 03:59:22 kernel: 5da0: c7b2f000 00000800 00000538 c01db54c 00000800 00000000 c7abd4b4 00000001
> Dec 25 03:59:22 kernel: 5dc0: 00000090 c7b2f000 c7abd490 c01dcc00 00000000 c7592a90 c7b2f000 c7592aec
> Dec 25 03:59:22 kernel: 5de0: 00000000 00000725 c72850a0 c7592a90 00000001 c01d1238 00000724 00000000
> Dec 25 03:59:22 kernel: 5e00: 00000000 00000724 00000000 00000725 00000000 c00eee08 00000724 00000000
> Dec 25 03:59:22 kernel: 5e20: 00000000 c7225ec8 c72850a0 00000000 00000000 c0096b68 00000725 00000000
> Dec 25 03:59:22 kernel: 5e40: 00000000 00000000 c7b2f000 c7225ec8 00000001 c7225ec0 00000000 c7592bd0
> Dec 25 03:59:22 kernel: 5e60: b427e578 c01d2444 00000000 00000000 7e711374 0000000b 0009e016 c7592a90
> Dec 25 03:59:22 kernel: 5e80: 00000000 00100000 00000000 00000000 00000000 000000a0 c7225f88 c72850a0
> Dec 25 03:59:22 kernel: 5ea0: fffffdee 00000725 c71c20a0 c7224000 00000000 c00c41a0 00000000 00000000
> Dec 25 03:59:22 kernel: 5ec0: ae59a748 00000725 00000000 00000000 00000000 00000001 ffffffff c72850a0
> Dec 25 03:59:22 kernel: 5ee0: 00000000 00000000 00000000 00000000 c71c20a0 00000000 00000000 00000000
> Dec 25 03:59:22 kernel: 5f00: 00000725 00000000 00000000 00000000 00000725 00000000 00000725 00000000
> Dec 25 03:59:22 kernel: 5f20: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
> Dec 25 03:59:22 kernel: 5f40: 00000000 00000000 c72850a0 ae59a748 c7225f88 ae59a748 00000725 c00c48c0
> Dec 25 03:59:22 kernel: 5f60: c72850a0 c00c5d04 00000000 00000000 c72850a0 ae59a748 00000725 c00c4bbc
> Dec 25 03:59:22 kernel: 5f80: 00000022 00000001 00000000 00000000 00000725 00000725 b427e500 00000004
> Dec 25 03:59:22 kernel: 5fa0: c0012f48 c0012dc0 00000725 00000725 0000002b ae59a748 00000725 b45a2ab0
> Dec 25 03:59:22 kernel: 5fc0: 00000725 00000725 b427e500 00000004 b427e670 b427e62c b45be628 b427e578
> Dec 25 03:59:22 kernel: 5fe0: 00000000 b427e460 b6c652a8 b6c65a24 80000010 0000002b 00000000 00000000
> Dec 25 03:59:22 kernel: [<c0229400>] (__up_write+0x3c/0x1a8) from [<c02d0618>] (leb_write_unlock+0x74/0xf0)
> Dec 25 03:59:22 kernel: [<c02d0618>] (leb_write_unlock+0x74/0xf0) from [<c02d0d10>] (ubi_eba_write_leb+0x94/0x820)
> Dec 25 03:59:22 kernel: [<c02d0d10>] (ubi_eba_write_leb+0x94/0x820) from [<c02cfbd4>] (ubi_leb_write+0xc4/0xe8)
> Dec 25 03:59:22 kernel: [<c02cfbd4>] (ubi_leb_write+0xc4/0xe8) from [<c01da97c>] (ubifs_leb_write+0x9c/0x144)
> Dec 25 03:59:22 kernel: [<c01da97c>] (ubifs_leb_write+0x9c/0x144) from [<c01db54c>] (ubifs_wbuf_sync_nolock+0xf0/0x360)
> Dec 25 03:59:22 kernel: [<c01db54c>] (ubifs_wbuf_sync_nolock+0xf0/0x360) from [<c01dcc00>] (ubifs_sync_wbufs_by_inode+0xac/0xe8)
> Dec 25 03:59:22 kernel: [<c01dcc00>] (ubifs_sync_wbufs_by_inode+0xac/0xe8) from [<c01d1238>] (ubifs_fsync+0x78/0xb4)
> Dec 25 03:59:22 kernel: [<c01d1238>] (ubifs_fsync+0x78/0xb4) from [<c00eee08>] (generic_write_sync+0x70/0xa0)
> Dec 25 03:59:22 kernel: [<c00eee08>] (generic_write_sync+0x70/0xa0) from [<c0096b68>] (generic_file_aio_write+0xb0/0xd4)
> Dec 25 03:59:22 kernel: [<c0096b68>] (generic_file_aio_write+0xb0/0xd4) from [<c01d2444>] (ubifs_aio_write+0xf8/0x18c)
> Dec 25 03:59:22 kernel: [<c01d2444>] (ubifs_aio_write+0xf8/0x18c) from [<c00c41a0>] (do_sync_write+0x9c/0xd0)
> Dec 25 03:59:22 kernel: [<c00c41a0>] (do_sync_write+0x9c/0xd0) from [<c00c48c0>] (vfs_write+0x9c/0x148)
> Dec 25 03:59:22 kernel: [<c00c48c0>] (vfs_write+0x9c/0x148) from [<c00c4bbc>] (sys_write+0x38/0x78)
> Dec 25 03:59:22 kernel: [<c00c4bbc>] (sys_write+0x38/0x78) from [<c0012dc0>] (ret_fast_syscall+0x0/0x2c)
> Dec 25 03:59:22 kernel: Code: e4863004 e5953004 e1560003 0a00002a (e593200c)
> Dec 25 03:59:22 kernel: ---[ end trace 3a4c18efd3a1d78b ]---
> Dec 25 03:59:22 kernel: note: Master[739] exited with preempt_count 2
>
> This was a remote log via udp, so the lines were a bit misordered and theoretically there may be missing lines. But I reordered it and I think it's complete.
>
> Would be great if you have some hints.
How reliable can you reproduce this?
Last time Artem thought that it looks like a memory corruption.
Maybe due to a race. Can you reproduce this without preemption? CONFIG_PREEMPT_NONE=y?
Thanks,
//richard
next prev parent reply other threads:[~2014-02-03 11:02 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-03 8:51 UBI leb_write_unlock NULL pointer Oops (continuation) Wiedemer, Thorsten (Lawo AG)
2014-02-03 9:38 ` Richard Weinberger
2014-02-03 10:31 ` AW: " Wiedemer, Thorsten (Lawo AG)
2014-02-03 11:02 ` Richard Weinberger [this message]
2014-02-03 12:51 ` Wiedemer, Thorsten (Lawo AG)
2014-02-03 13:56 ` Richard Weinberger
2014-02-04 7:22 ` Artem Bityutskiy
2014-02-04 7:46 ` Richard Weinberger
2014-02-04 7:54 ` Artem Bityutskiy
2014-02-04 15:45 ` UBI leb_write_unlock NULL pointer Oops (continuation) on ARM926 Bill Pringlemeir
2014-02-04 15:45 ` Bill Pringlemeir
2014-02-04 17:05 ` Bill Pringlemeir
2014-02-04 17:05 ` Bill Pringlemeir
2014-02-04 19:57 ` Bill Pringlemeir
2014-02-04 19:57 ` Bill Pringlemeir
2014-02-04 20:07 ` Richard Weinberger
2014-02-04 20:07 ` Richard Weinberger
2014-02-04 17:01 ` AW: UBI leb_write_unlock NULL pointer Oops (continuation) Wiedemer, Thorsten (Lawo AG)
2014-02-04 17:52 ` Wiedemer, Thorsten (Lawo AG)
2014-02-05 8:29 ` Richard Weinberger
2014-02-05 21:45 ` Bill Pringlemeir
2014-02-05 22:13 ` Richard Weinberger
2014-02-05 22:23 ` Bill Pringlemeir
2014-02-06 13:05 ` AW: " Wiedemer, Thorsten (Lawo AG)
2014-02-06 16:00 ` Bill Pringlemeir
2014-02-11 8:01 ` Wiedemer, Thorsten (Lawo AG)
2014-02-11 15:25 ` Bill Pringlemeir
2014-02-12 15:18 ` AW: " Wiedemer, Thorsten (Lawo AG)
2014-02-12 17:46 ` Richard Weinberger
2014-02-12 18:11 ` AW: AW: " Bill Pringlemeir
2014-02-12 18:21 ` Bill Pringlemeir
2014-02-12 20:48 ` Richard Weinberger
2014-02-14 17:11 ` Bill Pringlemeir
2014-02-18 8:25 ` Ziegler, Emanuel (Lawo AG)
2014-02-19 11:09 ` Ziegler, Emanuel (Lawo AG)
2014-02-20 15:21 ` AW: AW: AW: " Wiedemer, Thorsten (Lawo AG)
2014-02-20 17:26 ` Bill Pringlemeir
2014-02-20 17:38 ` Bill Pringlemeir
2014-02-21 8:55 ` AW: AW: AW: " Wiedemer, Thorsten (Lawo AG)
2014-02-21 9:28 ` Quiniou, Benoit (Lawo AG)
2014-02-21 17:53 ` AW: " Bill Pringlemeir
2014-02-21 18:12 ` Richard Weinberger
2014-02-21 19:45 ` Bill Pringlemeir
2014-02-22 0:49 ` Bill Pringlemeir
2014-02-22 8:32 ` Richard Weinberger
2014-02-24 15:09 ` Bill Pringlemeir
2014-02-24 15:36 ` Richard Weinberger
2014-02-24 15:45 ` Bill Pringlemeir
2014-02-24 15:48 ` Bill Pringlemeir
2014-03-05 20:57 ` Richard Weinberger
2014-03-05 21:30 ` Bill Pringlemeir
2014-03-05 21:42 ` Bill Pringlemeir
2014-03-05 23:11 ` Richard Weinberger
2014-03-05 23:12 ` Richard Weinberger
2014-02-04 19:49 ` Andrew Ruder
2014-02-05 8:39 ` AW: " Wiedemer, Thorsten (Lawo AG)
2014-02-05 20:13 ` Andrew Ruder
2015-10-16 12:17 ` Wojciech Nizinski
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