re: kern/49710: i386 radeondrmkms panic when starting Xorg

[matthew green <mrg%eterna.com.au@localhost>]

The following reply was made to PR kern/49710; it has been noted by GNATS.

From: matthew green <mrg%eterna.com.au@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/49710: i386 radeondrmkms panic when starting Xorg
Date: Sat, 07 Mar 2015 18:35:55 +1100

 > trap type 1 code 0 eip c02516b4 cs 8 eflags 202 cr2 bbae74f8 ilevel 8 esp da780f6c
 > curlwp 0xc38e0d40 pid 73 lid 1 lowest kstack 0xdb4d72c0
 > Stopped in pid 73.1 (Xorg) at   netbsd:breakpoint+0x4:  popl    %ebp
 > db{0}> bt                                                           
 > breakpoint(c0aebac0,3f8,5,c0b3e400,c0b3e400,c046b3ee,c34b0608,c34b0580,c34de164,
 > c34df000) at netbsd:breakpoint+0x4                                             
 > comintr(c34b04c8,db4d9c58,0,0,0,0,0,0,0,0) at netbsd:comintr+0x5d5
 > --- switch to interrupt stack ---                                 
 > Xintr_legacy4() at netbsd:Xintr_legacy4+0xc3
 > --- interrupt ---                           
 > mutex_spin_enter(c2fddb54,c2fddb50,32,bffb,0,0,c0000000,1003fff,c2fdd8c0,db4d9d7
                    ^^^^^^^^
 > 0) at netbsd:mutex_spin_enter+0x31                                             
 > radeon_fence_wait_seq(c2fdd870,c2fdd000,5,0,5,0,0,0,0,0) at netbsd:radeon_fence_
 > wait_seq+0x125                                                                 
 > radeon_fence_wait(c3b1fabc,1,1,c96210,1,c2fdd701,c3b1fabc,c3836184,0,c383610c) a
 
 can you reproduce this?  if so, please also run "show lock c2fddb54"
 from ddb -- where the first argument to mutex_spin_enter is the
 argument to show lock.
 
 this seems like a deadlock, and the above will show info about the
 lock being waited on.
 
 
 .mrg.