Bug 7819
| Summary: | Kernel oopses unplugging USB adapter in 2.6.20-rc3 | ||
|---|---|---|---|
| Product: | v4l-dvb | Reporter: | Cijoml Cijomlovic Cijomlov (cijoml) |
| Component: | dvb-core | Assignee: | dvb-core (v4l-dvb_dvb-core) |
| Status: | CLOSED PATCH_ALREADY_AVAILABLE | ||
| Severity: | normal | CC: | bunk, Markus.Rechberger |
| Priority: | P2 | ||
| Hardware: | i386 | ||
| OS: | Linux | ||
| Kernel Version: | 2.6.20-rc3 | Subsystem: | |
| Regression: | --- | Bisected commit-id: | |
Does it still happen with 2.6.20-rc5? Is this also present on 2.6.19? Yes it is present also in 2.6.19. Let me compile -rc5 to verify :) This is a known bug that has always been present. dvb-core is not hot-unpluggable. This causes a kernel oops if a dvb usb device is removed while the device is open. Hi, device wasn't playing any stream - it was just plugged in and later removed. No running mplayer/kaffeine/mythtv application. Hi, can you retry with following repository? http://mcentral.de/hg/~mrec/v4l-dvb-stable/ Markus |
Most recent kernel where this bug did *NOT* occur: unknown Distribution: usb 5-3: USB disconnect, address 3 BUG: unable to handle kernel paging request at virtual address 00100100 printing eip: c027aed9 *pde = 3735b067 *pte = 00000000 Oops: 0000 [#1] PREEMPT Modules linked in: ppp_deflate zlib_deflate bsd_comp ppp_async ppp_generic slhc bnep rfcomm hidp l2cap lp fuse eeprom hci_usb bluetooth 8250_pci eth1394 dvb_usb_dtt200u dvb_usb dvb_core dvb_pll usbhid 8250 serial_core snd_intel8x0 snd_intel8x0m snd_ac97_codec hostap_cs hostap ieee80211_crypt ac97_bus 8139too snd_pcm snd_timer snd ohci1394 ieee1394 irda mii crc_ccitt snd_page_alloc ohci_hcd ehci_hcd uhci_hcd parport_pc parport psmouse ide_cd i2c_i801 cdrom iTCO_wdt iTCO_vendor_support pcspkr rtc CPU: 0 EIP: 0060:[<c027aed9>] Not tainted VLI EFLAGS: 00010206 (2.6.20-rc3 #3) EIP is at evdev_disconnect+0x87/0xae eax: 00000000 ebx: 000ffcf0 ecx: c1968000 edx: f7220000 esi: f7f76640 edi: c1b6e000 ebp: c1b6e6c4 esp: c1969e78 ds: 007b es: 007b ss: 0068 Process khubd (pid: 132, ti=c1968000 task=c1908030 task.ti=c1968000) Stack: 00000000 f78be0f8 f7f76670 c02792ed 00000000 f7e5d000 f7ee5218 fca40420 f7a28400 fca9819b f7e5d000 fca972da fca3f502 f7ee5218 fca40420 f7a28400 fca97386 f7ee5218 fca40420 f7ee5200 c026d012 ffffffed f7ee5218 fca4044c Call Trace: [<c02792ed>] input_unregister_device+0x89/0x13a [<fca9819b>] dvb_usb_remote_exit+0x33/0x3e [dvb_usb] [<fca972da>] dvb_usb_exit+0xb/0x87 [dvb_usb] [<fca97386>] dvb_usb_device_exit+0x30/0x44 [dvb_usb] [<c026d012>] usb_unbind_interface+0x3e/0x7c [<c0245b4f>] __device_release_driver+0x6e/0x84 [<c0245ee4>] device_release_driver+0x1d/0x32 [<c02455f6>] bus_remove_device+0x5b/0x69 [<c0244232>] device_del+0xfa/0x152 [<c026ac89>] usb_disable_device+0x5c/0xbb [<c02678a8>] usb_disconnect+0x82/0x114 [<c0268353>] hub_thread+0x375/0xa76 [<c02d7a4b>] __sched_text_start+0x4a3/0x546 [<c0114528>] __wake_up_common+0x31/0x4f [<c012821b>] autoremove_wake_function+0x0/0x35 [<c0267fde>] hub_thread+0x0/0xa76 [<c0128160>] kthread+0xa0/0xc8 [<c01280c0>] kthread+0x0/0xc8 [<c0103813>] kernel_thread_helper+0x7/0x10 ======================= Code: e8 77 a7 e9 ff 8b 5e 4c eb 1b 8d 83 08 04 00 00 b9 06 00 02 00 ba 1d 00 00 00 e8 fd 60 ee ff 8b 9b 10 04 00 00 81 eb 10 04 00 00 <8b> 83 10 04 00 00 0f 18 00 90 8d 93 10 04 00 00 8d 46 4c 39 c2 EIP: [<c027aed9>] evdev_disconnect+0x87/0xae SS:ESP 0068:c1969e78 Hardware Environment: Acer TravelMate 240, Leadtek DVB-T adapter Software Environment: Debian Testing, 2.6.20-rc3 Problem Description: kernel oopses removing dongle from usb port Steps to reproduce: unplug adapter