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Subject: Re: webcamd-4.12.0.1 segfault when using WinTV-HV-950Q
To: youngluc@gmail.com, freebsd-multimedia@freebsd.org
References: <63966a1d-1244-4ea0-0bf8-15b485f63cd4@gmail.com>
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From: Hans Petter Selasky <hps@selasky.org>
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Date: Sun, 17 Dec 2017 10:40:09 +0100
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On 12/17/17 04:03, Lucas Young wrote:
> #0  0x0000000000415262 in timer_exec (arg=0x0) at kernel/linux_timer.c:142
> 142                                     TAILQ_REMOVE(&timer_head, t, 
> entry);
> (gdb) bt
> #0  0x0000000000415262 in timer_exec (arg=0x0) at kernel/linux_timer.c:142
> #1  0x00000008014cfbc5 in pthread_create () from /lib/libthr.so.3
> #2  0x0000000000000000 in ?? ()
> Current language:  auto; currently minimal
> (gdb) p &timer_head
> $1 = (struct timer_head *) 0xc32bf8
> (gdb) p t
> $2 = (struct timer_list *) 0x802843130

Instead of dumping &timer_head, can you dump "timer_head" and the tree 
of elements that follow?

p timer_head

p *t

--HPS