Bug 132594
| Summary: | USB subsystem causes page fault and crashes | ||
|---|---|---|---|
| Product: | Base System | Reporter: | Martin Lesser <ml-freebsd> |
| Component: | usb | Assignee: | freebsd-usb (Nobody) <usb> |
| Status: | Open --- | ||
| Severity: | Affects Only Me | ||
| Priority: | Normal | ||
| Version: | 7.1-RELEASE | ||
| Hardware: | Any | ||
| OS: | Any | ||
For bugs matching the following criteria: Status: In Progress Changed: (is less than) 2014-06-01 Reset to default assignee and clear in-progress tags. Mail being skipped |
Infrequently the system crashes when - printing to an USB-printer - inserting or removing USB-sticks I have two savecores from such crashes (lines #7 and #8 are probably the problematic ones?): (kgdb) backtrace #0 doadump () at pcpu.h:196 #1 0xc054e2b3 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:418 #2 0xc054e4be in panic (fmt=Variable "fmt" is not available. ) at /usr/src/sys/kern/kern_shutdown.c:574 #3 0xc078e38c in trap_fatal (frame=0xe5aeac0c, eva=0) at /usr/src/sys/i386/i386/trap.c:939 #4 0xc078e610 in trap_pfault (frame=0xe5aeac0c, usermode=0, eva=0) at /usr/src/sys/i386/i386/trap.c:852 #5 0xc078efa9 in trap (frame=0xe5aeac0c) at /usr/src/sys/i386/i386/trap.c:530 #6 0xc0777d4b in calltrap () at /usr/src/sys/i386/i386/exception.s:159 #7 0xc04d7419 in usbd_setup_xfer (xfer=0x0, pipe=0x0, priv=0xc56ed600, buffer=0xc805c000, length=4096, flags=5, timeout=10, callback=0xc09d6480 <ulpt_read_cb>) at /usr/src/sys/dev/usb/usbdi.c:547 #8 0xc09d646d in ulpt_tick (xsc=0xc56ed600) at /usr/src/sys/modules/ulpt/../../dev/usb/ulpt.c:773 #9 0xc055fe07 in softclock (dummy=0x0) at /usr/src/sys/kern/kern_timeout.c:274 #10 0xc052e19b in ithread_loop (arg=0xc549f830) at /usr/src/sys/kern/kern_intr.c:1088 #11 0xc052adc6 in fork_exit (callout=0xc052dff0 <ithread_loop>, arg=0xc549f830, frame=0xe5aead38) at /usr/src/sys/kern/kern_fork.c:804 #12 0xc0777dc0 in fork_trampoline () at /usr/src/sys/i386/i386/exception.s:264 What else information can I submit to help to solve this problem? Fix: Not using USB-devices on my system ;-)