On Wed, 9 Feb 2011, Bill Green wrote: > I am running NetBSD 5.1 sparc64 on a Sun Ultra 5. A Samsung USB printer is > connected to the system via an NEC-chipset PCI USB host. Printing via CUPS > using the SPLIX drivers (http://splix.sourceforge.net/) causes a kernel > panic. Printing via CUPS across the network (from hosts with > their own drivers) works without problems. > > As far as I can tell, a component of SPLIX (rastertoqpdl) > crashes with SIGBUS, and this sometimes panics the kernel. I don't know what > the bug in SPLIX is, either. > > I'm attaching below a dmesg, and ddb backtraces from two panics; the second,
[...] > panic: kernel fault > Stopped in pid 0.5 (system) at netbsd:cpu_Debugger+0x4: nop > db> bt > data_access_fault(b5cbaa0, 30, 1476388, 0, 70, 400) at Definitely a kernel problem but don't know the specifics. You need to dump the trapframe. > cpu0: data fault: pc=14becc8 addr=0 > kernel trap 30: data access exception > Stopped in pid 0.5 (system) at netbsd:usbd_setup_xfer+0x8: ldub > [ > %o0 + 0x70], %g3 This one is definitely a NULL pointer dereference in the kernel, probably in usbd_setup_xfer. Eduardo
