Re: kern/52602: Panic when trying to list probes after dtrace_sdt.kmod has been loaded

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

The following reply was made to PR kern/52602; it has been noted by GNATS.

From: Paul Goyette <paul%whooppee.com@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: kern-bug-people%netbsd.org@localhost, gnats-admin%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost
Subject: Re: kern/52602: Panic when trying to list probes after dtrace_sdt.kmod
 has been loaded
Date: Mon, 9 Oct 2017 06:13:39 +0800 (+08)

 >> Description:
 > system panics with
 > uvm_fault(0xc12f7b40, 0xdc41f000, 1) -> 0xe
 > uvm_fault(0xc12f7b40, 0xdc41f000, 1) -> 0xe
 > fatal page fault in supervisor mode
 > trap type 6 code 0 eip 0xc011d265 cs 0x8 eflag 0x10246 cr2 0xdc41f007 ilevel 0 esp 0xc0f777c8
 > curlwp 0xc4c902a0 pid 34 lid 1 lowest kstack 0xdcc032c8
 > kernel: supervisor trap mode page fault, code=0
 > Stopped in pid 34.1 (dtrace) at netbsd:trap+0x9e6: movzbl 0(%eax),%ecx
 
 
 Hmmm, runs fine in qemu with a 8.99.3 kernel from Oct 10 sources.
 
 >> How-To-Repeat:
 > modload dtrace_sdt.kmod
 > run dtrace -l
 
 Presumably, the actual commands you execute to reproduce this bug are:
 
  	modload dtrace_sdt
  	dtrace -l
 
 If I try to run "modload dtrace_sdt.kmod" I get a "no such file or 
 directory" error (since the ".kmod" suffix and module-path prefix are 
 automatically added by the modload code).
 
 
 
 
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 | Paul Goyette     | PGP Key fingerprint:     | E-mail addresses:          |
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