panic quitting Xorg, nvidia-driver-340.46, 10.1-RELEASE/amd64

Jan Henrik Sylvester me at
Sun Nov 16 23:09:48 UTC 2014

I am getting panics shutting down for a few days now. The only
significant changes I remember are 10.1-RELEASE/amd64 (updated from RC4,
RC3, ...) and nvidia-driver-340.46 (updated from 331.67_1). Since I had
no problems with any 10.1-RCx, I suspect nvidia-driver to be the problem.

nvidia-driver-340.46 was forcibly installed alongside libglesv2-10.3.2
and libEGL-10.3.2, which are required by kde-workspace-4.11.13. I tried
with the conflicting files present from any of the two packages and got
a panic in both cases.

The panic can be triggered pretty reliably by "service kdm4 stop" and on
any shutdown or reboot with Xorg (+kdm4) still running.

Before I start testing without nvidia, trying to downgrade
nvidia-driver, trying without kdm4, etc.:

Is this problem known? Can the new conflict have anything to do with the
problem? Is there anything useful in the panic message I wrote down below?

Fatal trap 12: page fault while in kernel mode
cpuid = 3; apic id = 85
fault virtual address   = 0x0
fault code              = supervisor read instruction, page not present
instruction pointer     = 0x20:0x0
stack pointer           = 0x28:0xfffffe022fbd97c0
frame pointer           = 0x28:0xfffffe00024e5fe8
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags        = interrupt enabled, resume, IOPL = 0
current process         = 1107 (Xorg)
trap number             = 12
panic: page fault
cpuid = 3
KDB: stack backtrace:
#0 0xffffffff80963000 at kdb_backtrace+0x60
#1 0xffffffff80928125 at panic+0x155
#2 0xffffffff80d24f1f at trap_fatal+0x38f
#3 0xffffffff80d25238 at trap_pfault+0x308
#4 0xffffffff80d2489a at trap+0x47a
#5 0xffffffff80d0a782 at calltrap+0x8

Jan Henrik

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