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Date: Tue, 9 Jun 2009 15:02:13 -0400 (EDT)
From: Mike Dresser <mdresser_l@windsormachine.com>
To: Mathias Kretschmer <posting@blx4.net>
cc: "Rafael J. Wysocki" <rjw@sisk.pl>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       Kernel Testers List <kernel-testers@vger.kernel.org>,
       Alex Samad <alex@samad.com.au>, Dave Chinner <david@fromorbit.com>
Subject: Re: [Bug #13375] Kernel crash with 2.6.29 + nfs + xfs (radix-tree)
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Mine crashed last night, nothing was logged in the local logfiles, but 
fortunately remote syslog got it

Jun  9 01:24:07 x kernel: ------------[ cut here ]------------
Jun  9 01:24:07 x kernel: kernel BUG at lib/radix-tree.c:485!
Jun  9 01:24:07 x kernel: invalid opcode: 0000 [#1] SMP
Jun  9 01:24:07 x kernel: last sysfs file: /sys/class/scsi_host/host0/stats
Jun  9 01:24:07 x kernel: CPU 0
Jun  9 01:24:07 x kernel: Pid: 338, comm: kswapd0 Not tainted 2.6.30-rc8 #2 S2895
Jun  9 01:24:07 x kernel: RIP: 0010:[<ffffffff803a5a04>]  [<ffffffff803a5a04>] radix_tree_tag_set+0x6b/0x9c
Jun  9 01:24:07 x kernel: RSP: 0018:ffff88016e1e9c58  EFLAGS: 00010246
Jun  9 01:24:07 x kernel: RAX: 0000000000000038 RBX: 0000000000000000 RCX: 0000000000000038
Jun  9 01:24:07 x kernel: RDX: 0000000000000000 RSI: 00000000002faaf8 RDI: ffff88016c3b8220
Jun  9 01:24:07 x kernel: RBP: ffff88016e1e9c60 R08: 0000000000000000 R09: ffff8800927460b8
Jun  9 01:24:07 x kernel: R10: 0000000000000001 R11: 0000000000000000 R12: ffff8800666e61c0
Jun  9 01:24:07 x kernel: R13: ffff88016dc21c00 R14: ffff8800666e62c8 R15: ffff88016c3b821c
Jun  9 01:24:07 x kernel: FS:  00007fda3776f6e0(0000) GS:ffff880028028000(0000) knlGS:0000000000000000
Jun  9 01:24:07 x kernel: CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
Jun  9 01:24:07 x kernel: CR2: 00007fda368758e0 CR3: 0000000000201000 CR4: 00000000000006e0
Jun  9 01:24:07 x kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
Jun  9 01:24:07 x kernel: DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Jun  9 01:24:07 x kernel: Process kswapd0 (pid: 338, threadinfo ffff88016e1e8000, task ffff88016f245fa0)
Jun  9 01:24:07 x kernel: Stack:
Jun  9 01:24:07 x kernel:  ffff88016c3b81e0 ffff88016e1e9ca0 ffffffff8038dcd6 ffff88016e1e9d40
Jun  9 01:24:07 x kernel:  ffff8800666e6350 ffff8800666e61c0 0000000000000048 ffff88016e1e9d40
Jun  9 01:24:07 x kernel:  0000000000000080 ffff88016e1e9cc0 ffffffff8037f2d2 ffff8800666e6350
Jun  9 01:24:07 x kernel: Call Trace:
Jun  9 01:24:07 x kernel:  [<ffffffff8038dcd6>] xfs_inode_set_reclaim_tag+0x71/0x93
Jun  9 01:24:07 x kernel:  [<ffffffff8037f2d2>] xfs_reclaim+0x106/0x10d
Jun  9 01:24:07 x kernel:  [<ffffffff8038c51e>] xfs_fs_destroy_inode+0x37/0x58
Jun  9 01:24:07 x kernel:  [<ffffffff8029dde0>] destroy_inode+0x32/0x47
Jun  9 01:24:07 x kernel:  [<ffffffff8029dec9>] dispose_list+0xd4/0x102
Jun  9 01:24:07 x kernel:  [<ffffffff8029e0f0>] shrink_icache_memory+0x1f9/0x22f
Jun  9 01:24:07 x kernel:  [<ffffffff80269660>] shrink_slab+0xdf/0x154
Jun  9 01:24:07 x kernel:  [<ffffffff80269e13>] kswapd+0x48d/0x62c
Jun  9 01:24:07 x kernel:  [<ffffffff80267765>] ? isolate_pages_global+0x0/0x219
Jun  9 01:24:07 x kernel:  [<ffffffff802481b8>] ? autoremove_wake_function+0x0/0x38
Jun  9 01:24:07 x kernel:  [<ffffffff80269986>] ? kswapd+0x0/0x62c
Jun  9 01:24:07 x kernel:  [<ffffffff80269986>] ? kswapd+0x0/0x62c
Jun  9 01:24:07 x kernel:  [<ffffffff80247e1a>] kthread+0x56/0x83
Jun  9 01:24:07 x kernel:  [<ffffffff8020c9ba>] child_rip+0xa/0x20
Jun  9 01:24:07 x kernel:  [<ffffffff80247dc4>] ? kthread+0x0/0x83
Jun  9 01:24:07 x kernel:  [<ffffffff8020c9b0>] ? child_rip+0x0/0x20
Jun  9 01:24:07 x kernel: Code: 18 02 00 00 48 d3 e8 89 c1 83 e1 3f 41 0f a3 0c 11 19 c0 85 c0 75 07 49 8d 04 11 0f ab 08 48 63 c1 4d 8b 44 c0 18 4d 85 c0 75 04 <0f> 0b eb fe 41 83 eb 06 41 ff ca 45$
Jun  9 01:24:07 x kernel: RIP  [<ffffffff803a5a04>] radix_tree_tag_set+0x6b/0x9c
Jun  9 01:24:07 x kernel:  RSP <ffff88016e1e9c58>
Jun  9 01:24:07 x kernel: ---[ end trace a0564fe308c3b2b4 ]---

CONFIG_XFS_DEBUG was on for this one.

I've noticed it's always kswapd0 that dies?

Mike

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