(switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface). On Mon, 29 Jun 2009 16:15:02 GMT bugzilla-daemon@xxxxxxxxxxxxxxxxxxx wrote: > http://bugzilla.kernel.org/show_bug.cgi?id=13675 > > Summary: sierra_close sometimes crashes upon device removal > Product: Drivers > Version: 2.5 > Kernel Version: 2.6.31-rc1-git5 > Platform: All > OS/Version: Linux > Tree: Mainline > Status: NEW > Severity: normal > Priority: P1 > Component: USB > AssignedTo: greg@xxxxxxxxx > ReportedBy: peter@xxxxxxxxxxxxxxxxxxxx > Regression: Yes 2.6.28->2.6.29 regression. Might be usb-serial, might be serial/tty layer? > > First time submitting a kernel.org bug. Apologies for anything I've missed. > > I think was this introduced in 2.6.29. I do not see this in 2.6.28.x kernels. > > I am seeing this on both AMD Geode and Via C7 platforms. > > In this system there are other processes which may be attempting to read > related /sys files or the device node itself. In this case, I am removing an > AT&T Mercury USB Modem: > > usb 1-3: USB disconnect, address 3 > sierra ttyUSB4: resubmit read urb failed.(-19) > sierra ttyUSB4: resubmit read urb failed.(-19) > sierra ttyUSB0: Sierra USB modem converter now disconnected from ttyUSB0 > sierra 1-3:1.0: device disconnected > sierra ttyUSB1: Sierra USB modem converter now disconnected from ttyUSB1 > sierra 1-3:1.1: device disconnected > sierra ttyUSB2: Sierra USB modem converter now disconnected from ttyUSB2 > sierra 1-3:1.2: device disconnected > sierra ttyUSB3: Sierra USB modem converter now disconnected from ttyUSB3 > sierra 1-3:1.3: device disconnected > sierra ttyUSB4: Sierra USB modem converter now disconnected from ttyUSB4 > sierra 1-3:1.4: device disconnected > sierra ttyUSB5: Sierra USB modem converter now disconnected from ttyUSB5 > sierra 1-3:1.5: device disconnected > sierra ttyUSB6: Sierra USB modem converter now disconnected from ttyUSB6 > sierra 1-3:1.6: device disconnected > BUG: unable to handle kernel NULL pointer dereference at 00000040 > IP: [<c02fe3f4>] sierra_close+0x14/0xc0 > *pde = 00000000 > Oops: 0002 [#1] > last sysfs file: /sys/devices/pci0000:00/0000:00:0e.0/usb1/1-3/idProduct > Modules linked in: coop_gateways(P) sctp > > Pid: 4, comm: events/0 Tainted: P (2.6.31-rc1-git5 #11) > EIP: 0060:[<c02fe3f4>] EFLAGS: 00010282 CPU: 0 > EIP is at sierra_close+0x14/0xc0 > EAX: cfa62c00 EBX: ced278c0 ECX: 00000000 EDX: c02fe3e0 > ESI: c055b6c0 EDI: 00000000 EBP: cf83bf04 ESP: cf83bef4 > DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 > Process events/0 (pid: 4, ti=cf83a000 task=cf8391b0 task.ti=cf83a000) > Stack: > cfa62c00 cfa62c00 c055b6c0 cfa62ce8 cf83bf18 c02f95cd cfa62c00 ffffffff > <0> ced9c000 cf83bf24 c02faee1 00000296 cf83bf50 c0267606 ced9c098 00000000 > <0> 00000000 00000001 00000000 ced9c10a ced9c1e4 ced9c1e0 cf803ce0 cf83bfa0 > Call Trace: > [<c02f95cd>] ? serial_do_down+0x4d/0x60 > [<c02faee1>] ? serial_hangup+0x11/0x30 > [<c0267606>] ? do_tty_hangup+0xc6/0x330 > [<c012dc0c>] ? worker_thread+0x13c/0x240 > [<c012dbaa>] ? worker_thread+0xda/0x240 > [<c0267540>] ? do_tty_hangup+0x0/0x330 > [<c0131510>] ? autoremove_wake_function+0x0/0x50 > [<c012dad0>] ? worker_thread+0x0/0x240 > [<c01312c4>] ? kthread+0x74/0x80 > [<c0131250>] ? kthread+0x0/0x80 > [<c010345b>] ? kernel_thread_helper+0x7/0x1c > Code: 8b 1c 24 8b 74 24 04 89 ec 5d c3 8d b6 00 00 00 00 8d bf 00 00 00 00 55 > 89 e5 57 56 53 83 ec 04 89 45 f0 8b 18 8b b8 20 02 00 00 <c7> 47 40 00 00 00 00 > c7 47 44 00 00 00 00 8b 0b 85 c9 74 77 8d > EIP: [<c02fe3f4>] sierra_close+0x14/0xc0 SS:ESP 0068:cf83bef4 > CR2: 0000000000000040 > ---[ end trace af1048799077b9ee ]--- -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
