Re: try KMGUARD

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

Another kmem-related panic:
fatal protection fault in supervisor mode
trap type 4 code 0 rip ffffffff804c65e7 cs 8 rflags 10206 cr2  7f7fe8701020 cpl 
8 rsp fffffe810b42dbd0
kernel: protection fault trap, code=0
Stopped in pid 0.76 (system) at netbsd:mutex_tryenter+0xa:      movq    0(%rdi),
%rax
db{5}> sh reg
ds          a800
es          0
fs          0
gs          61f8
rdi         1000000000018
rsi         fffffffe
rbp         fffffe810b42dbe0
rbx         1000000000018
rdx         ffffffff
rcx         ffffffff
rax         ec
r8          fffffe810b46a800
r9          1
r10         0
r11         0
r12         1
r13         1000000000018
r14         76
r15         74
rip         ffffffff804c65e7    mutex_tryenter+0xa
cs          8
rflags      10206
rsp         fffffe810b42dbd0
ss          10
netbsd:mutex_tryenter+0xa:      movq    0(%rdi),%rax
db{5}>  tr
mutex_tryenter() at netbsd:mutex_tryenter+0xa
vmem_rehash_all() at netbsd:vmem_rehash_all+0x56
workqueue_worker() at netbsd:workqueue_worker+0x7f

Looks like vmem_list is corrupted.
Using 'show all vmems', the fault occurs in vmem 0xffffffff80e5ba00 'kmem'

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--