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Date:      Wed, 15 Feb 2012 23:30:30 -0500
From:      Arnaud Lacombe <lacombar@gmail.com>
To:        Vijay Singh <vijju.singh@gmail.com>
Cc:        freebsd-hackers@freebsd.org
Subject:   Re: Panic in 8.1 in softclock(): mutex Giant not owned at ../../../../sys/kern/kern_mutex.c:185
Message-ID:  <CACqU3MUqEz2iTrUQDkbsbC9ta_EpaKcnQj7mAxfevTMFbqGJTA@mail.gmail.com>
In-Reply-To: <CALCNsJRVsuRxX6u_oOqymBGhSjCe7EwihiT88PGaiWQbOZ_TxQ@mail.gmail.com>
References:  <CALCNsJQEyr17UN6f7bz=6Qqs6=j_Otdk66NhUh8HbtbyvacT=Q@mail.gmail.com> <201111081005.43851.jhb@freebsd.org> <CALCNsJRVsuRxX6u_oOqymBGhSjCe7EwihiT88PGaiWQbOZ_TxQ@mail.gmail.com>
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Hi,

Vijay Singh wrote;
> In the code below:
> (kgdb-amd64-6.8-48) l
> 402                                     if (c_lock != NULL) {
> 403                                             if (c_lock == &Giant.lock_object) {
> 404                                                     mtx_lock(&Giant);
> 405                                                     mtx_assert(&Giant, MA_OWNED);
> 406                                             } else {
> 407                                                     class->lc_lock(c_lock, sharedlock);
> 408                                             }
>
Out of curiosity, where does your code comes from ? The same snippet
from the  `release/8.1.0' branch does not refer to `Giant' at all, it
only reads:

               if (c_lock != NULL) {
                       class->lc_lock(c_lock, sharedlock);

Thanks,
 - Arnaud
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