Re: kern/54532: EPYC 7401P panics with page fault trap, code=0

[mlelstv%serpens.de@localhost (Michael van Elst)]

The following reply was made to PR kern/54532; it has been noted by GNATS.

From: mlelstv%serpens.de@localhost (Michael van Elst)
To: gnats-bugs%netbsd.org@localhost
Cc: 
Subject: Re: kern/54532: EPYC 7401P panics with page fault trap, code=0
Date: Sun, 8 Sep 2019 08:16:59 -0000 (UTC)

 alnsn%netbsd.org@localhost writes:
 
 >Output below is typed and it may have typos. I recorded a video and I can
 >send missing pieces or check for typos.
 
 >uvm_fault(0xffffffff815b1a00, 0x0, 4) -> e
 >fatal page fault in supervisor mode
 >trap type 6 code 0x10 rip 0 cs 0x8 rflags 0x10202 cr2 0 ilevel 0x8 rsp 0xffffffff817fb3a8
 >curlwp 0xffffffff81482060 pid 0.1 lowest kstack 0xffffffff817f82c0
 >kernel: page fault trap, code=0
 >Stopped in pid 0.1 (system) at 0:uvm_fault(0xffffffff815b1a00, 0x7fbfc0000000, 1) -> e
 >page fault in supervisor mode
 >trap type 6 code 0 rip 0xffffffff802207c7 cs 0x8 rflags 0x10216 cr2 0x7fbfc0000000 ilevel 0x8 rsp 0xffffffff817fafc0
 >curlwp 0xffffffff81482060 pid 0.1 lowest kstack 0xffffffff817f82c0
 >	kernel: page fault trap, code=0
 >Stopped in pid 0.1 (system) at netbsd:db_disasm+0x65:	testb	$0x1,0(%rcx,%rcx
 >,0)
 >db{0}>
 
 
 Any chance for a backtrace ?
 -- 
 -- 
                                 Michael van Elst
 Internet: mlelstv%serpens.de@localhost
                                 "A potential Snark may lurk in every tree."