From: Matthias Andree <matthias.andree@gmx.de>
To: Linux-Kernel mailing list <linux-kernel@vger.kernel.org>
Subject: khubd crash on scanner disconnect
Date: Fri, 30 Jan 2004 18:36:56 +0100 [thread overview]
Message-ID: <20040130173656.GA4570@merlin.emma.line.org> (raw)
Hi,
I have just caught this khubd NULL dereference simply by unplugging my
scanner. Kernel is a current 2.6.2-rc2 from BK, PNP enabled:
usb 1-1: USB disconnect, address 2
Unable to handle kernel NULL pointer dereference at virtual address 0000001e
printing eip:
c0299a9c
*pde = 00000000
Oops: 0000 [#1]
CPU: 0
EIP: 0060:[<c0299a9c>] Not tainted
EFLAGS: 00010282
EIP is at disconnect_scanner+0x2c/0x5f
eax: ffffffff ebx: d3d25094 ecx: c03d76d8 edx: 00000030
esi: 00000000 edi: d3cb28c0 ebp: d3dc1e24 esp: d3dc1e14
ds: 007b es: 007b ss: 0068
Process khubd (pid: 5, threadinfo=d3dc0000 task=d3f8e040)
Stack: d3d25080 c03d76d8 d3d25080 c03d7740 d3dc1e40 c02824f6 d3d25080 d3d25080
d3d25094 d3d25094 c03d7760 d3dc1e58 c023b456 d3d25094 d3d250c0 d3cb28fc
d3cb28e8 d3dc1e74 c02993ec d3d25094 d3d25080 d3cb28fc c03d766c 00000000
Call Trace:
[<c02824f6>] usb_unbind_interface+0x76/0x80
[<c023b456>] device_release_driver+0x66/0x70
[<c02993ec>] destroy_scanner+0x7c/0xe0
[<c01e3225>] kobject_cleanup+0x95/0xa0
[<c02824f6>] usb_unbind_interface+0x76/0x80
[<c023b456>] device_release_driver+0x66/0x70
[<c023b5cd>] bus_remove_device+0x6d/0xb0
[<c023a394>] device_del+0x74/0xd0
[<c0288a20>] usb_disable_device+0x90/0xc0
[<c0282fd4>] usb_disconnect+0xd4/0x120
[<c028562f>] hub_port_connect_change+0x22f/0x350
[<c0285041>] hub_port_status+0x41/0xb0
[<c02859c6>] hub_events+0x276/0x330
[<c0285ad3>] hub_thread+0x53/0x110
[<c011f6c0>] default_wake_function+0x0/0x20
[<c0285a80>] hub_thread+0x0/0x110
[<c01092a9>] kernel_thread_helper+0x5/0xc
Code: 80 7e 1e 00 75 16 85 f6 74 21 8d 46 3c 8b 5d f8 8b 75 fc 89
--
Matthias Andree
Encrypt your mail: my GnuPG key ID is 0x052E7D95
next reply other threads:[~2004-01-30 17:38 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-01-30 17:36 Matthias Andree [this message]
2004-01-30 19:14 ` khubd crash on scanner disconnect Greg KH
2004-01-30 19:32 ` Prakash K. Cheemplavam
2004-01-31 0:44 ` Greg KH
2004-01-31 14:30 ` Matthias Andree
2004-01-31 16:58 ` Matthias Andree
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