svn commit: r238765 - head/sys/dev/e1000

[Garrett Cooper]

On Tue, Jul 31, 2012 at 8:13 AM, Andrey Zonov <andrey at zonov.org> wrote:
> On 7/28/12 2:09 AM, Adrian Chadd wrote:
>>
>> Hi,
>>
>> Can you please revert this commit for now?
>>
>> * it has some netmap stuff in it that isn't related to the commit;
>> * it's causing panics due to lock recursion;
>
>
> I can confirm panics with the latest HEAD running under ESX.
>
> _mtx_lock_sleep: recursed on non-recursive mutex em0 @
> /usr/src/sys/dev/e1000/if_lem.c:881
>
> Tracing pid 12 tid 100030 td 0xfffffe0002960480
> kdb_enter() at kdb_enter+0x3b
> panic() at panic+0x1d1
> _mtx_lock_sleep() at _mtx_lock_sleep+0x35f
> _mtx_lock_flags() at _mtx_lock_flags+0x111
> lem_start() at lem_start+0x34
> if_transmit() at if_transmit+0xd6
> ether_output_frame() at ether_output_frame+0x45
> ether_output() at ether_output+0x548
> arpintr() at arpintr+0x10c1
> netisr_dispatch_src() at netisr_dispatch_src+0x152
> ether_demux() at ether_demux+0x18d
> ether_nh_input() at ether_nh_input+0x290
> netisr_dispatch_src() at netisr_dispatch_src+0x152
> lem_intr() at lem_intr+0x3ba
> intr_event_execute_handlers() at intr_event_execute_handlers+0x6a
> ithread_loop() at ithread_loop+0xab
> fork_exit() at fork_exit+0x135
> fork_trampoline() at fork_trampoline+0xe
> --- trap 0, rip = 0, rsp = 0xffffff8000301cb0, rbp = 0 ---

    http://lists.freebsd.org/pipermail/freebsd-current/2012-July/035593.html

Cheers,
-Garrett