From: Liu Bo <liub.liubo@gmail.com>
To: linux-usb@vger.kernel.org
Cc: LKML <linux-kernel@vger.kernel.org>
Subject: [BUG Report] BUG: unable to handle kernel NULL pointer dereference at
Date: Mon, 13 Aug 2012 17:11:40 +0800 [thread overview]
Message-ID: <5028C4CC.9070301@gmail.com> (raw)
Hi all,
I'm using mainline upstream 3.6.0-rc1 compiled based on Fedora-16.
When I unplug my mobile usb card, I hit this:
[ 247.017258] BUG: unable to handle kernel NULL pointer dereference at (null)
[ 247.017378] IP: [<ffffffffa03bf27f>] stop_read_write_urbs+0x3f/0x90 [usb_wwan]
[ 247.017484] PGD 0
[ 247.017518] Oops: 0000 [#1] SMP
[ 247.017572] Modules linked in: cdc_ether usbnet mii option usb_wwan usb_storage tcp_lp fuse lockd rfcomm bnep ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ext3 jbd arc4 iwldvm mac80211 snd_hda_codec_hdmi snd_hda_codec_conexant btusb bluetooth i915 snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm snd_timer snd_page_alloc thinkpad_acpi snd iwlwifi cfg80211 soundcore e1000e rfkill wmi drm_kms_helper drm i2c_i801 i2c_algo_bit i2c_core lpc_ich mfd_core pcspkr coretemp tpm_tis tpm tpm_bios joydev uinput crc32c_intel ghash_clmulni_intel sunrpc microcode video sdhci_pci sdhci mmc_core
[ 247.018728] CPU 0
[ 247.018762] Pid: 34, comm: khubd Not tainted 3.6.0-rc1+ #2 LENOVO 4291HA6/4291HA6
[ 247.018860] RIP: 0010:[<ffffffffa03bf27f>] [<ffffffffa03bf27f>] stop_read_write_urbs+0x3f/0x90 [usb_wwan]
[ 247.018991] RSP: 0018:ffff88021441dba0 EFLAGS: 00010286
[ 247.019080] RAX: 0000000000000000 RBX: 0000000000000000 RCX: dead000000200200
[ 247.019212] RDX: ffff8801f6225228 RSI: ffff8801f190f678 RDI: ffff8801f6224a10
[ 247.019350] RBP: ffff88021441dbd0 R08: ffff8801f6224a28 R09: ffffea0007c66800
[ 247.019489] R10: ffffffff812ceb05 R11: 5347203a30425355 R12: ffff880212a1a780
[ 247.019629] R13: ffff880212a1a780 R14: 0000000000000000 R15: 0000000000000000
[ 247.019771] FS: 0000000000000000(0000) GS:ffff88021e200000(0000) knlGS:0000000000000000
[ 247.019928] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[ 247.020045] CR2: 0000000000000000 CR3: 00000002129ed000 CR4: 00000000000407f0
[ 247.020184] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 247.020309] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 247.020450] Process khubd (pid: 34, threadinfo ffff88021441c000, task ffff880214b25c00)
[ 247.020605] Stack:
[ 247.020649] ffff88021441dbb0 ffff880212a1a780 ffff8801f61fb830 ffff8801f6224800
[ 247.020822] 0000000000000001 ffff880212a1a788 ffff88021441dbe0 ffffffffa03bf2de
[ 247.020991] ffff88021441dc30 ffffffff81463b8d ffff8801fab7a448 ffff8801f6220800
[ 247.021163] Call Trace:
[ 247.021228] [<ffffffffa03bf2de>] usb_wwan_disconnect+0xe/0x10 [usb_wwan]
[ 247.021370] [<ffffffff81463b8d>] usb_serial_disconnect+0xdd/0x130
[ 247.021506] [<ffffffff8143165d>] usb_unbind_interface+0x5d/0x1b0
[ 247.021635] [<ffffffff813b19bc>] __device_release_driver+0x7c/0xe0
[ 247.021739] [<ffffffff813b1a4c>] device_release_driver+0x2c/0x40
[ 247.021822] [<ffffffff813b1373>] bus_remove_device+0xe3/0x150
[ 247.021900] [<ffffffff813adf00>] device_del+0x120/0x1b0
[ 247.021974] [<ffffffff8142f030>] usb_disable_device+0xb0/0x280
[ 247.022066] [<ffffffff81425d4d>] usb_disconnect+0x9d/0x140
[ 247.022143] [<ffffffff81428901>] hub_thread+0xba1/0x1720
[ 247.022218] [<ffffffff810807b0>] ? remove_wait_queue+0x50/0x50
[ 247.022297] [<ffffffff81427d60>] ? usb_remote_wakeup+0x70/0x70
[ 247.022375] [<ffffffff8107ff03>] kthread+0x93/0xa0
[ 247.022443] [<ffffffff81618944>] kernel_thread_helper+0x4/0x10
[ 247.022520] [<ffffffff8107fe70>] ? flush_kthread_worker+0xb0/0xb0
[ 247.022601] [<ffffffff81618940>] ? gs_change+0x13/0x13
[ 247.022667] Code: 66 90 80 7f 1a 00 49 89 fd 74 5a 49 89 fc 31 db 0f 1f 40 00 49 8b 7c 24 20 45 31 f6 48 81 c7 10 02 00 00 e8 24 25 ff e0 49 89 c7 <4b> 8b 3c 37 49 83 c6 08 e8 a4 e0 06 e1 49 83 fe 20 75 ed 45 30
[ 247.023188] RIP [<ffffffffa03bf27f>] stop_read_write_urbs+0x3f/0x90 [usb_wwan]
[ 247.026877] RSP <ffff88021441dba0>
[ 247.030500] CR2: 0000000000000000
[ 247.055642] ---[ end trace d12afd8ebf250ae7 ]---
thanks,
liubo
next reply other threads:[~2012-08-13 9:11 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-13 9:11 Liu Bo [this message]
2012-08-13 10:01 ` [BUG Report] BUG: unable to handle kernel NULL pointer dereference at Bjørn Mork
2012-08-13 10:19 ` Liu Bo
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=5028C4CC.9070301@gmail.com \
--to=liub.liubo@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-usb@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.