https://bugzilla.novell.com/show_bug.cgi?id=679484 https://bugzilla.novell.com/show_bug.cgi?id=679484#c0 Summary: kernel oops/crash when unplugging USB audio device Classification: openSUSE Product: openSUSE 11.4 Version: Final Platform: x86-64 OS/Version: Other Status: NEW Severity: Critical Priority: P5 - None Component: Kernel AssignedTo: kernel-maintainers@forge.provo.novell.com ReportedBy: jnelson-suse@jamponi.net QAContact: qa@suse.de Found By: --- Blocker: --- User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:2.0b12) Gecko/20110222 Firefox/4.0b12 I can reliably cause my kernel to crash and burn (nothing but the "capslock key flashing -- magic sysrq doesn't even work) by unplugging one of my USB audio headsets. Hit ratio is at least 1 in 3. The kernel as of this writing is: 2.6.37.1-1.2-desktop After a bit of help, I got kdump working and here is the output from using 'crash' on the kernel dump: crash> bt PID: 3430 TASK: ffff88011fd54380 CPU: 1 COMMAND: "udevd" #0 [ffff8800bfd03a90] machine_kexec at ffffffff81026ebf #1 [ffff8800bfd03ad0] crash_kexec at ffffffff810a2e8a #2 [ffff8800bfd03ba0] oops_end at ffffffff81525448 #3 [ffff8800bfd03bc0] do_page_fault at ffffffff81527675 #4 [ffff8800bfd03cc0] page_fault at ffffffff815247cf [exception RIP: snd_complete_urb+115] RIP: ffffffffa0926ff3 RSP: ffff8800bfd03d78 RFLAGS: 00010002 RAX: 0000000000000200 RBX: 0000000000000000 RCX: 0000000000000002 RDX: ffff88010c94b1c0 RSI: ffff88010c94b1c0 RDI: ffff88010c94b1c0 RBP: ffff88011147c2a8 R8: 0000000000000000 R9: 0000000000000001 R10: 0000000000000000 R11: 000000000b5e4000 R12: ffff88011147c3e8 R13: 0000000000000000 R14: ffff88010c94b1c0 R15: ffff88013088e230 ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018 #5 [ffff8800bfd03d70] unmap_urb_for_dma at ffffffff813854a3 #6 [ffff8800bfd03da0] usb_hcd_giveback_urb at ffffffff8138566d #7 [ffff8800bfd03dc0] uhci_giveback_urb at ffffffff813a60c6 #8 [ffff8800bfd03e30] uhci_scan_qh at ffffffff813a632a #9 [ffff8800bfd03e60] uhci_scan_schedule at ffffffff813a6833 #10 [ffff8800bfd03e90] uhci_irq at ffffffff813a8ea5 #11 [ffff8800bfd03ec0] usb_hcd_irq at ffffffff81384e2c #12 [ffff8800bfd03ee0] handle_IRQ_event at ffffffff810c96eb #13 [ffff8800bfd03f40] handle_fasteoi_irq at ffffffff810cc319 #14 [ffff8800bfd03f70] handle_irq at ffffffff810058b5 #15 [ffff8800bfd03f80] do_IRQ at ffffffff810054fe --- <IRQ stack> --- #16 [ffff880106bf3c98] ret_from_intr at ffffffff81524593 [exception RIP: _atomic_dec_and_lock] RIP: ffffffff8125f8b0 RSP: ffff880106bf3d40 RFLAGS: 00000286 RAX: 00000000000000f1 RBX: ffff880137802800 RCX: 0000000000000000 RDX: ffff8801309af788 RSI: ffffffff81a02280 RDI: ffff880137802800 RBP: ffffffff8152458e R8: 0000000000629400 R9: 0000000000000000 R10: 2e313a313a302d62 R11: 0000000000000206 R12: ffffffff811684a3 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000003 ORIG_RAX: ffffffffffffffb6 CS: 0010 SS: 0018 #17 [ffff880106bf3d40] dput at ffffffff81166c7e #18 [ffff880106bf3d60] link_path_walk at ffffffff8115efed #19 [ffff880106bf3e00] path_walk at ffffffff8115f7ea #20 [ffff880106bf3e40] do_path_lookup at ffffffff8115f97b #21 [ffff880106bf3e70] user_path_parent at ffffffff8115fa65 #22 [ffff880106bf3eb0] do_unlinkat at ffffffff8115fae7 #23 [ffff880106bf3f80] system_call_fastpath at ffffffff81002f8b RIP: 00007fa7b200faf7 RSP: 00007fff2f5970a0 RFLAGS: 00010246 RAX: 0000000000000057 RBX: ffffffff81002f8b RCX: 00007fff2f59b0fa RDX: 0000000000000000 RSI: 0000000000629407 RDI: 00007fff2f59f100 RBP: 00000000006298f0 R8: 0000000000629400 R9: 0000000000000000 R10: 2e313a313a302d62 R11: 0000000000000206 R12: 0000000000621010 R13: 0000000000629400 R14: 00000000006274a0 R15: 000000000000020d ORIG_RAX: 0000000000000057 CS: 0033 SS: 002b crash> Reproducible: Always Steps to Reproduce: 1. 2. 3. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.