LOR - COM LOCK

[Adrian Chadd]

On 11 October 2011 23:49, Edgar Martinez <emartinez at kbcnetworks.com> wrote:

> Kernel page fault with the following non-sleepable locks held:
> exclusive sleep mutex ath1_scan_lock (ath1_scan_lock) r = 0 (0xc5912778) locked @ /usr/src/sys/net80211/ieee80211_node.c:2158

Right, the "lock held" isn't important though. What's the actual panic.

> Fatal trap 12: page fault while in kernel mode
> fault virtual address   = 0xc5c83008
> fault code              = supervisor read, page not present
> instruction pointer     = 0x20:0xc06520ac
> stack pointer           = 0x28:0xcead8964
> frame pointer           = 0x28:0xcead8974
> code segment            = base 0x0, limit 0xfffff, type 0x1b
>                        = DPL 0, pres 1, def32 1, gran 1
> processor eflags        = interrupt enabled, resume, IOPL = 0
> current process         = 75563 (hostapd)
> [ thread pid 75563 tid 100057 ]
> Stopped at      0xc06520ac = ieee80211_free_node_debug+0xc:     movl    0x8(%esi),%edi

Hm, in the debugger, what's "nt" ? Is it NULL?



Adrian