linux-kernel - Re: [brcmfmac] BUG: unable to handle kernel paging request at ffffffff82196446

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Message-ID: <5236CC49.7000206@broadcom.com>
Date:	Mon, 16 Sep 2013 11:15:53 +0200
From:	"Arend van Spriel" <arend@...adcom.com>
To:	"Fengguang Wu" <fengguang.wu@...el.com>
cc:	"Hante Meuleman" <meuleman@...adcom.com>,
	"John W. Linville" <linville@...driver.com>,
	linux-kernel@...r.kernel.org, linux-wireless@...r.kernel.org,
	brcm80211-dev-list@...adcom.com
Subject: Re: [brcmfmac] BUG: unable to handle kernel paging request at
 ffffffff82196446

On 09/02/2013 12:23 PM, Fengguang Wu wrote:
> Greetings,
>
> I got the below dmesg and the first bad commit is

Hi Fengguang,

I could not reproduce this issue. Could you retest with the attached 
patch file applied and let me know if that fixes the problem?

Regards,
Arend

> commit 668761ac01d6f5a36b8e5a24d4e154550e2c4c3b
> Author: Hante Meuleman <meuleman@...adcom.com>
> Date:   Fri Apr 12 10:55:55 2013 +0200
>
>      brcmfmac: define and use platform specific data for SDIO.
>
>      This patch adds support for platform specific data for SDIO
>      fullmac devices. Currently OOB interrupts are configured by Kconfig
>      BRCMFMAC_SDIO_OOB but that is now determined dynamically by checking
>      availibility of platform data.
>
>      Cc: Hauke Mehrtens <hauke@...ke-m.de>
>      Reviewed-by: Arend Van Spriel <arend@...adcom.com>
>      Reviewed-by: Franky (Zhenhui) Lin <frankyl@...adcom.com>
>      Reviewed-by: Pieter-Paul Giesberts <pieterpg@...adcom.com>
>      Reviewed-by: Piotr Haber <phaber@...adcom.com>
>      Signed-off-by: Hante Meuleman <meuleman@...adcom.com>
>      Signed-off-by: Arend van Spriel <arend@...adcom.com>
>      Signed-off-by: John W. Linville <linville@...driver.com>
>
>
> [   48.966342] Switched to clocksource tsc
> [   48.970002] kernel tried to execute NX-protected page - exploit attempt? (uid: 0)
> [   48.970851] BUG: unable to handle kernel paging request at ffffffff82196446
> [   48.970957] IP: [<ffffffff82196446>] classes_init+0x26/0x26
> [   48.970957] PGD 1e76067 PUD 1e77063 PMD f388063 PTE 8000000002196163
> [   48.970957] Oops: 0011 [#1]
> [   48.970957] CPU: 0 PID: 17 Comm: kworker/0:1 Not tainted 3.11.0-rc7-00444-gc52dd7f #23
> [   48.970957] Workqueue: events brcmf_driver_init
> [   48.970957] task: ffff8800001d2000 ti: ffff8800001d4000 task.ti: ffff8800001d4000
> [   48.970957] RIP: 0010:[<ffffffff82196446>]  [<ffffffff82196446>] classes_init+0x26/0x26
> [   48.970957] RSP: 0000:ffff8800001d5d40  EFLAGS: 00000286
> [   48.970957] RAX: 0000000000000001 RBX: ffffffff820c5620 RCX: 0000000000000000
> [   48.970957] RDX: 0000000000000001 RSI: ffffffff816f7380 RDI: ffffffff820c56c0
> [   48.970957] RBP: ffff8800001d5d50 R08: ffff8800001d2508 R09: 0000000000000002
> [   48.970957] R10: 0000000000000000 R11: 0001f7ce298c5620 R12: ffff8800001c76b0
> [   48.970957] R13: ffffffff81e91d40 R14: 0000000000000000 R15: ffff88000e0ce300
> [   48.970957] FS:  0000000000000000(0000) GS:ffffffff81e84000(0000) knlGS:0000000000000000
> [   48.970957] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> [   48.970957] CR2: ffffffff82196446 CR3: 0000000001e75000 CR4: 00000000000006b0
> [   48.970957] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [   48.970957] DR3: 0000000000000000 DR6: 0000000000000000 DR7: 0000000000000000
> [   48.970957] Stack:
> [   48.970957]  ffffffff816f7df8 ffffffff820c5620 ffff8800001d5d60 ffffffff816eeec9
> [   48.970957]  ffff8800001d5de0 ffffffff81073dc5 ffffffff81073d68 ffff8800001d5db8
> [   48.970957]  0000000000000086 ffffffff820c5620 ffffffff824f7fd0 0000000000000000
> [   48.970957] Call Trace:
> [   48.970957]  [<ffffffff816f7df8>] ? brcmf_sdio_init+0x18/0x70
> [   48.970957]  [<ffffffff816eeec9>] brcmf_driver_init+0x9/0x10
> [   48.970957]  [<ffffffff81073dc5>] process_one_work+0x1d5/0x480
> [   48.970957]  [<ffffffff81073d68>] ? process_one_work+0x178/0x480
> [   48.970957]  [<ffffffff81074188>] worker_thread+0x118/0x3a0
> [   48.970957]  [<ffffffff81074070>] ? process_one_work+0x480/0x480
> [   48.970957]  [<ffffffff8107aa17>] kthread+0xe7/0xf0
> [   48.970957]  [<ffffffff810829f7>] ? finish_task_switch.constprop.57+0x37/0xd0
> [   48.970957]  [<ffffffff8107a930>] ? __kthread_parkme+0x80/0x80
> [   48.970957]  [<ffffffff81a6923a>] ret_from_fork+0x7a/0xb0
> [   48.970957]  [<ffffffff8107a930>] ? __kthread_parkme+0x80/0x80
> [   48.970957] Code: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc <cc> cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc
> [   48.970957] RIP  [<ffffffff82196446>] classes_init+0x26/0x26
> [   48.970957]  RSP <ffff8800001d5d40>
> [   48.970957] CR2: ffffffff82196446
> [   48.970957] ---[ end trace 62980817cd525f14 ]---
>
> git bisect start v3.10 v3.9 --
> git bisect  bad 20b4fb485227404329e41ad15588afad3df23050  # 12:16      9-  Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
> git bisect good 19b344efa35dbc253e2d10403dafe6aafda73c56  # 17:54    800+  Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
> git bisect  bad 20074f357da4a637430aec2879c9d864c5d2c23c  # 18:03      1-  filter: fix va_list build error
> git bisect good 953c96e0d85615d1ab1f100e525d376053294dc2  # 21:38    800+  tg3: Use bool not int
> git bisect  bad 4de41bef3e075dbc787f7c53b3562f23295f1d6d  # 22:21    102-  wil6210: Use cached copy of Tx descriptor
> git bisect good e73dcfbf061b524fe9aaef56cf3c2e234a45ec19  # 01:19    800+  Bluetooth: hidp: fix sending output reports on intr channel
> git bisect good c79490e1b5ebf35415147fe06f02d8e77ccfe6d4  # 07:18    800+  NFC: pn533: Avoid function declarations
> git bisect  bad 06d961a8e210035bff7e82f466107f9ab4a8fd94  # 07:49     55-  mac80211/minstrel: use the new rate control API
> git bisect good 97990a060e6757f48b931a3946b17c1c4362c3fb  # 10:43    800+  nl80211: allow using wdev identifiers to get scan results
> git bisect  bad 31ed07dc1e83b7926ce8ee2215ea21599a215990  # 11:15     77-  brcmfmac: remove ifidx variable from brcmf_fws_process_skb()
> git bisect good 1e9ab4dd258ecbb0f1c377fd4dbe227cdb93d9bd  # 14:16    800+  brcmfmac: setup SDIO reset behavior
> git bisect  bad 668761ac01d6f5a36b8e5a24d4e154550e2c4c3b  # 15:03     38-  brcmfmac: define and use platform specific data for SDIO.
> git bisect good 369508c5656db290f09b32d213effeea6c1431b8  # 18:30    800+  brcmfmac: Add 43143 SDIO support.
> git bisect good 979c29205ffa607c59ba2c9f9c083b967d356c97  # 19:54    800+  brcmfmac: Add drive strength programming for SDIO 43143.
> git bisect good 979c29205ffa607c59ba2c9f9c083b967d356c97  # 05:19   2400+  brcmfmac: Add drive strength programming for SDIO 43143.
> git bisect  bad c52dd7f94c5d5386413cb95462ac802847fa5f3a  # 05:20      0-  Merge remote-tracking branch 'sound/for-linus' into devel-cairo-x86_64-201308281454
> git bisect  bad d9eda0fae1394ea1e1c59c94d4a120ad9c06e64a  # 11:50     27-  Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
> git bisect  bad 797c8d18e6804f054e68555e6cf827827b6a073c  # 12:47      1-  Add linux-next specific files for 20130830
>
> Thanks,
> Fengguang
>


View attachment "0001-brcmfmac-obtain-platform-data-upon-module-initializa.patch" of type "text/plain" (7965 bytes)