Re: panic running include/t_paths

[Paul Goyette <paul%vps1.whooppee.com@localhost>]

On Mon, 4 May 2015, Manuel Bouyer wrote:

> Hello,
> since a few days, anita Xen tests of HEAD panics on
> include/t_paths:
> include/t_paths (42/618): 1 test cases
>    paths: uvm_fault(0xc15ef0dc, 0, 1) -> 0xe
> fatal page fault in supervisor mode
> trap type 6 code 0 eip c03ab50a cs 9 eflags 10246 cr2 0 ilevel 0 esp 4300
> curlwp 0xc17d1a80 pid 24550 lid 1 lowest kstack 0xcdb582c0
> panic: trap
> cpu0: Begin traceback...
> vpanic(c04f0421,cdb5ac58,cdb5acdc,c03d4c06,c04f0421,cdb5ace8,cdb5ace8,1,cdb582c0,10246) at netbsd:vpanic+0x11a
> panic(c04f0421,cdb5ace8,cdb5ace8,1,cdb582c0,10246,0,0,4300,cdb5ace8) at netbsd:panic+0x18
> trap() at netbsd:trap+0xbe6
> --- trap (number 6) ---
> sysmonopen(4300,0,1,2000,c17d1a80,0,c11e8e50,c11f18f0,43,c0d8a780) at netbsd:sysmonopen+0x8a
> spec_open(cdb5adb8,cdb5aea4,cdb5aecc,c04b9874,c11f18f0,1,c0d8a780,c104c000,cdb5ae80,c04522c5) at netbsd:spec_open+0x1ec
> VOP_OPEN(c11f18f0,1,c0d8a780,c0d8fcc0,cdb5ae08,c0d8a780,c0596f80,cdb5ae18,c023626d,c1766d00) at netbsd:VOP_OPEN+0x32
> vn_open(cdb5aea4,1,160,cdb5aeb8,c0edc1c0,c1755200,3,0,c1879200,c1075400) at netbsd:vn_open+0x1f5
> do_open(c17d1a80,0,c1879200,0,8049362,cdb5af38,0,c1879200,c17d1a80,cdb5afa8) at netbsd:do_open+0xc0
> do_sys_openat(0,8049362,cdb5af38,c057fbcc,cdb5af9c,c03aade3,c17d1a80,cdb5af68,cdb5af60,c159881c) at netbsd:do_sys_openat+0x6f
> sys_open(c17d1a80,cdb5af68,cdb5af60,c159881c,cdb5afa0,c0586964,cdb5af68,0,0,8049362) at netbsd:sys_open+0x2c
> syscall() at netbsd:syscall+0x83
> --- syscall (number 5) ---
> bb683b07:
> cpu0: End traceback...
>
> This showed up between -04-23 09:30 UTC and 2015-04-24 13:10 UTC
>
> The sysmonopen() in the stack trace could point to sysmon; could the
> recent work on sysmon be the cause of this ?

Quite likely.  Let me see if I can figure out what it happening, and how 
the xen test environment differs from the qemu environment.



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