From: "J. R. Okajima" <hooanon05-/E1597aS9LR3+QwDJ9on6Q@public.gmane.org>
To: Trond Myklebust
<Trond.Myklebust-HgOvQuBEEgTQT0dZR+AlfA@public.gmane.org>
Cc: linux-nfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Wu Fengguang
<fengguang.wu-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
Peter Zijlstra <peterz-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>,
Jan Kara <jack-AlSwsSmVLrQ@public.gmane.org>,
Steve Rago <sar-a+KepyhlMvJWk0Htik3J/w@public.gmane.org>,
Jens Axboe <jens.axboe-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>,
Peter Staubach <staubach-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
Arjan van de Ven <arjan-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>,
Ingo Molnar <mingo-X9Un+BFzKDI@public.gmane.org>,
linux-fsdevel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>,
Al Viro <viro-3bDd1+5oDREiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
Subject: Re: [PATCH 10/12] NFS: Simplify nfs_wb_page()
Date: Thu, 11 Mar 2010 13:45:56 +0900 [thread overview]
Message-ID: <22120.1268282756@jrobl> (raw)
In-Reply-To: <1268252300.3096.81.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
Trond Myklebust:
> OK. Does the following patch fix the deadlock for you?
Thanx for the patch, but it didn't work.
BUG: unable to handle kernel NULL pointer dereference at 0000000000000010
IP: [<ffffffff811cb860>] nfs_clear_page_tag_locked+0x20/0x80
PGD 1e641067 PUD 135a3067 PMD 0
Oops: 0000 [#1] PREEMPT SMP
last sysfs file: /sys/fs/aufs/si_fa7907d8bbb32280/br1
CPU 0
Modules linked in: aufs configs nfsd exportfs nls_iso8859_1 nls_cp437 [last unloaded: aufs]
Pid: 308, comm: nfsiod Not tainted 2.6.33aufsD #730 IPM41/Pegatron
RIP: 0010:[<ffffffff811cb860>] [<ffffffff811cb860>] nfs_clear_page_tag_locked+0x20/0x80
RSP: 0018:ffff88001f26bd10 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff86b47850
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88001b87e7c0
RBP: ffff88001f26bd30 R08: fdb3fbf8f8168244 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffff88001b87e7c0
R13: ffff88001f277110 R14: 0000000000000000 R15: ffff88001f2772f8
FS: 0000000000000000(0000) GS:ffff88000bc00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000000000000010 CR3: 000000001de5a000 CR4: 00000000000406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process nfsiod (pid: 308, threadinfo ffff88001f26a000, task ffff88001fe92040)
Stack:
ffff88001b87e7c0 0000000000000000 ffff88001b87e7c0 ffff88001f277110
<0> ffff88001f26bd70 ffffffff811d1464 ffff88001f2772ec 0000000000000000
<0> ffff88001f277118 ffff88001f277110 ffffffff8162b980 ffffffff81435e20
Call Trace:
[<ffffffff811d1464>] nfs_commit_release+0x74/0x210
[<ffffffff81435e20>] ? rpc_async_release+0x0/0x20
[<ffffffff81435c82>] rpc_release_calldata+0x12/0x20
[<ffffffff81435cea>] rpc_free_task+0x3a/0xa0
[<ffffffff81435e30>] rpc_async_release+0x10/0x20
[<ffffffff8106bd84>] worker_thread+0x2d4/0x420
[<ffffffff8106bd31>] ? worker_thread+0x281/0x420
[<ffffffff81070ca0>] ? autoremove_wake_function+0x0/0x40
[<ffffffff8106bab0>] ? worker_thread+0x0/0x420
[<ffffffff810706d6>] kthread+0x96/0xb0
[<ffffffff8100b5a4>] kernel_thread_helper+0x4/0x10
[<ffffffff81464f14>] ? restore_args+0x0/0x30
[<ffffffff81070640>] ? kthread+0x0/0xb0
[<ffffffff8100b5a0>] ? kernel_thread_helper+0x0/0x10
Code: 29 00 0f 0b eb fe 0f 1f 44 00 00 55 48 89 e5 48 83 ec 20 4c 89 65 f0 48 89 5d e8 4c 89 6d f8 49 89 fc 48 8b 47 18 48 83 7f 10 00 <48> 8b 40 10 4c 8b 68 40 74 46 49 8d 9d b0 00 00 00 48 89 df e8
RIP [<ffffffff811cb860>] nfs_clear_page_tag_locked+0x20/0x80
RSP <ffff88001f26bd10>
CR2: 0000000000000010
---[ end trace 1265485acdc49b9d ]---
J. R. Okajima
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next prev parent reply other threads:[~2010-03-11 4:45 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-25 22:15 [PATCH 00/12] Re: [PATCH] improve the performance of large sequential write NFS workloads Trond Myklebust
2010-01-25 22:15 ` [PATCH 05/12] VM/NFS: The VM must tell the filesystem when to free reclaimable pages Trond Myklebust
2010-01-25 22:15 ` [PATCH 11/12] NFS: Clean up nfs_sync_mapping Trond Myklebust
[not found] ` <20100125221544.16750.70574.stgit-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2010-01-25 22:15 ` [PATCH 02/12] VM: Don't call bdi_stat(BDI_UNSTABLE) on non-nfs backing-devices Trond Myklebust
2010-01-25 22:15 ` [PATCH 08/12] NFS: Simplify nfs_wb_page_cancel() Trond Myklebust
2010-01-25 22:15 ` [PATCH 10/12] NFS: Simplify nfs_wb_page() Trond Myklebust
[not found] ` <20100125221545.16750.19154.stgit-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2010-03-10 18:51 ` J. R. Okajima
2010-03-10 19:31 ` Trond Myklebust
[not found] ` <1268249482.3096.76.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2010-03-10 20:18 ` Trond Myklebust
[not found] ` <1268252300.3096.81.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2010-03-11 4:45 ` J. R. Okajima [this message]
2010-03-11 14:26 ` Trond Myklebust
[not found] ` <1268317582.3354.9.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2010-03-12 4:22 ` J. R. Okajima
2010-03-17 16:49 ` Christoph Hellwig
2010-03-17 17:26 ` Trond Myklebust
2010-03-17 17:52 ` Jeff Layton
2010-03-17 17:58 ` Trond Myklebust
[not found] ` <1268848682.8335.5.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2010-03-17 18:08 ` Jeff Layton
2010-01-25 22:15 ` [PATCH 09/12] NFS: Replace __nfs_write_mapping with sync_inode() Trond Myklebust
[not found] ` <20100125221545.16750.63968.stgit-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2010-01-26 11:21 ` Christoph Hellwig
[not found] ` <20100126112148.GA25170-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
2010-01-26 14:02 ` Trond Myklebust
2010-01-26 23:17 ` Trond Myklebust
2010-01-25 22:15 ` [PATCH 06/12] NFS: Run COMMIT as an asynchronous RPC call when wbc->for_background is set Trond Myklebust
2010-01-25 22:15 ` [PATCH 04/12] NFS: Reduce the number of unnecessary COMMIT calls Trond Myklebust
2010-01-25 22:15 ` [PATCH 03/12] NFS: Cleanup - move nfs_write_inode() into fs/nfs/write.c Trond Myklebust
2010-01-25 22:15 ` [PATCH 07/12] NFS: Ensure inode is always marked I_DIRTY_DATASYNC, if it has unstable pages Trond Myklebust
2010-01-25 22:15 ` [PATCH 01/12] VM: Split out the accounting of unstable writes from BDI_RECLAIMABLE Trond Myklebust
2010-01-25 22:15 ` [PATCH 12/12] NFS: Remove requirement for inode->i_mutex from nfs_invalidate_mapping Trond Myklebust
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