Date: Tue, 17 Feb 2015 17:10:43 +0000 From: "hiren (hiren panchasara)" <phabric-noreply@FreeBSD.org> To: freebsd-net@freebsd.org Subject: [Differential] [Commented On] D1711: Changes to the callout code to restore active semantics and also add a test-framework and test to validate thecallout code (and potentially for use by other tests). Message-ID: <adfde4d970a8ad4006ae6f10b3e9407d@localhost.localdomain> In-Reply-To: <differential-rev-PHID-DREV-vhk6ww63dvpj6egspuyt-req@FreeBSD.org> References: <differential-rev-PHID-DREV-vhk6ww63dvpj6egspuyt-req@FreeBSD.org>
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hiren added a comment.
>>! In D1711#88, @rrs wrote:
> Hans:
>
> I don't get your call sequence, I sent you an email on it..
>
> Hiren:
>
> Can you go up the call chain and dump the callout structure
> c in
> 0xffffffff80760064 in callout_lock (c=0xfffff8000d81dc98) at /usr/src/sys/kern/kern_timeout.c:530
(kgdb) frame 4
#4 0xffffffff80760064 in callout_lock (c=0xfffff8000d81dc98) at /usr/src/sys/kern/kern_timeout.c:530
530 CC_LOCK(cc);
(kgdb) p *c
$1 = {c_links = {le = {le_next = 0x0, le_prev = 0xfffffe0000804db8}, sle = {sle_next = 0x0}, tqe = {tqe_next = 0x0, tqe_prev = 0xfffffe0000804db8}},
c_time = 903238992575048, c_precision = 241591893750, c_arg = 0xfffff8000d81dc00, c_func = 0xffffffff8082a610 <arptimer>, c_lock = 0x0, c_flags = 22,
c_cpu = 0}
>
> There is something funny here, because the lock's listed (which is what the spin lock panic was on)
> are all mtx_lock=4.. which means they are un-locked.
REVISION DETAIL
https://reviews.freebsd.org/D1711
To: rrs, gnn, rwatson, lstewart, jhb, kostikbel, sbruno, imp, adrian, hselasky
Cc: julian, hiren, jhb, kostikbel, emaste, delphij, neel, erj, freebsd-net
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