Re: Reader / writer lock error: rw_vector_enter: locking against myself

[Matthias Scheler <tron%zhadum.org.uk@localhost>]

On Wed, Jul 16, 2008 at 01:07:36PM +1000, Sarton O'Brien wrote:
> kernel only a hour old produces the following and then locks up:
> 
>                     Loaded initial symtab at 0xffffffff8063dba4, strtab at 
> 0xffffffff80688b08, # entries 12714
> Reader / writer lock error: rw_vector_enter: locking against myself
> 
> lock address : 0xffffffff805afe48
> current cpu  :                  0
> current lwp  : 0xffffffff805739a0
> owner/count  : 0xffffffff805739a0 flags    : 0x0000000000000004

Same problem here:

booting hd0a:netbsd - starting in 0
9645560+475008+778208 [682968+442629]=0xc78400
Reader / writer lock error: rw_vector_enter: locking against myself

lock address : 0xffffffff80bf1fc8
current cpu  :                  0
current lwp  : 0xffffffff80b52ba0
owner/count  : 0xffffffff80b52ba0 flags    : 0x0000000000000004

panic: lock error
fatal breakpoint trap in supervisor mode
trap type 1 code 0 rip ffffffff804d51d5 cs 8 rflags 246 cr2  ffff800009bb90b4 
cpl 8 rsp ffffffff80d7c6f0
Stopped in pid 0.1 (system) at  netbsd:breakpoint+0x5:  leave
db{0}> bt
breakpoint() at netbsd:breakpoint+0x5
panic() at netbsd:panic+0x260
lockdebug_abort() at netbsd:lockdebug_abort+0x42
rw_vector_enter() at netbsd:rw_vector_enter+0x252
uvm_fault_internal() at netbsd:uvm_fault_internal+0xc8
trap() at netbsd:trap+0x603
--- trap (number 0) ---

        Kind regards

-- 
Matthias Scheler                                  http://zhadum.org.uk/