Hi David, Thanks for responding and we will give that commit a try to see if it fixes the problem. Shantanu >________________________________ > From: David Howells <dhowells@xxxxxxxxxx> >To: Shantanu Goel <sgoel01@xxxxxxxxx> >Cc: dhowells@xxxxxxxxxx; "linux-cachefs@xxxxxxxxxx" <linux-cachefs@xxxxxxxxxx> >Sent: Wednesday, September 11, 2013 11:46 AM >Subject: Re: kernel BUG at fs/fscache/cookie.c:547 > > >Shantanu Goel <sgoel01@xxxxxxxxx> wrote: > >> We have fscache deployed on several hosts and recently hit the bug below >> on a couple of hosts. We searched the mailing lists to see if it had >> been reported but did not find anything similar. We would appreciate >> any insight you might have into this problem. >> We are running the 3.9.11 + fscache-20130702 branch from dhowells git tree as referenced here >> https://www.redhat.com/archives/linux-cachefs/2013-July/msg00002.html. >> ... >> Sep 6 17:22:37 kernel BUG at fs/fscache/cookie.c:547! >> ... >> Sep 6 17:22:37 RIP: 0010:[<ffffffffa041387e>] [<ffffffffa041387e>] >> __fscache_cookie_put+0x4e/0x60 [fscache] >> ... >> Sep 6 17:22:37 Call Trace: >> Sep 6 17:22:37 [<ffffffffa0413dd9>] __fscache_relinquish_cookie+0x109/0x260 [fscache] >> Sep 6 17:22:37 [<ffffffffa043c461>] nfs_fscache_release_super_cookie+0x31/0xb0 [nfs] > >My suspicion is that you need to apply a fixup that got applied to >kernel/wait.c to fix wait_on_atomic_t(): > > commit 42577ca8c3616baaafdd8f167b2e1fb959026081 > Author: David Howells <dhowells@xxxxxxxxxx> > Date: Tue Jul 23 16:49:24 2013 +0100 > Fix __wait_on_atomic_t() to call the action func if the counter != 0 > >Alternatively, this commit and the commit set that you applied are all in >linux-3.11 now. > >David > > > -- Linux-cachefs mailing list Linux-cachefs@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cachefs
