[fedora-virt] Xen pv_ops domU :: BUG() in remove_from_page_cache()

[Mark McLoughlin]

Hi,

2.6.29-rc3 x86_64 guest on x86_64 RHEL5.3 host:

  https://bugzilla.redhat.com/484295

kernel BUG at mm/filemap.c:123!                    
invalid opcode: 0000 [#1] SMP DEBUG_PAGEALLOC      
last sysfs file: /sys/devices/vbd-51712/block/xvda/xvda2/dev
CPU 0                                                       
Modules linked in: ipv6 xts lrw gf128mul sha256_generic cbc dm_crypt
dm_round_robin dm_multipath btrfs zlib_deflate libcrc32c xfs exportfs jfs
reiserfs gfs2 msdos linear raid10 raid456 async_xor async_memcpy async_tx xor
raid1 raid0 xen_netfront xen_blkfront iscsi_ibft iscsi_tcp libiscsi_tcp
libiscsi scsi_transport_iscsi ext2 ext4 jbd2 crc16 squashfs pcspkr nfs lockd
nfs_acl auth_rpcgss sunrpc vfat fat cramfs  
Pid: 975, comm: sh Tainted: G    B   W  2.6.29-0.66.rc3.fc11.x86_64 #1          
RIP: e030:[<ffffffff810a8b9e>]  [<ffffffff810a8b9e>]
__remove_from_page_cache+0x40/0xde                                              
RSP: e02b:ffff88007081f928  EFLAGS: 00010002                                    
RAX: 000000000000000d RBX: ffffe20002e9b900 RCX: 0000000000000005               
RDX: ffff88000000ac48 RSI: fffffffffffffff0 RDI: ffff880000009700               
RBP: ffff88007081f938 R08: 0000000000000009 R09: ffff88007fc010c8               
R10: ffffffff81087cc0 R11: ffff88007fa0b328 R12: ffff88007ba2d160               
R13: 000000000000003a R14: 0000000000000002 R15: ffff88007081f9e8               
FS:  00007f0a1576d6f0(0000) GS:ffffffff81934000(0000) knlGS:0000000000000000    
CS:  e033 DS: 0000 ES: 0000 CR0: 000000008005003b                               
CR2: 00007f6308fd5580 CR3: 0000000001001000 CR4: 0000000000000660               
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000               
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000000               
Process sh (pid: 975, threadinfo ffff88007081e000, task ffff880070dda390)       
Stack:                                                                          
 ffff88007ba2d178 ffffe20002e9b900 ffff88007081f958 ffffffff810a8c67            
 ffffe20002e9b900 000000000000003a ffff88007081f978 ffffffff810b0b27            
 0000000000000002 ffffe20002e9b900 ffff88007081fa78 ffffffff810b0c2b            
Call Trace:                                                                     
 [<ffffffff810a8c67>] remove_from_page_cache+0x2b/0x38                          
 [<ffffffff810b0b27>] truncate_complete_page+0x4c/0x61                          
 [<ffffffff810b0c2b>] truncate_inode_pages_range+0xef/0x36e                     
 [<ffffffff810b0eb7>] truncate_inode_pages+0xd/0x12                             
 [<ffffffff810f0937>] dispose_list+0x3b/0xf8                                    
 [<ffffffff810f0ce1>] invalidate_inodes+0xdc/0xfa                               
 [<ffffffff810e0dea>] generic_shutdown_super+0x4a/0xe8                          
 [<ffffffff810e0eaa>] kill_block_super+0x22/0x3a                                
 [<ffffffff810e0f91>] deactivate_super+0x68/0x7d                                
 [<ffffffff810f3f6d>] mntput_no_expire+0x10d/0x14e                              
 [<ffffffff810dfd22>] __fput+0x18a/0x197                                        
 [<ffffffff810dfd47>] fput+0x18/0x1a                                            
 [<ffffffff810c0ae1>] remove_vma+0x4f/0x85                                      
 [<ffffffff810c0c32>] exit_mmap+0x11b/0x13d                                     
 [<ffffffff8104800f>] mmput+0x45/0xa4                                           
 [<ffffffff8104bf97>] exit_mm+0x114/0x120                                       
 [<ffffffff8104dc12>] do_exit+0x1da/0x8b4                                       
 [<ffffffff8106ef5b>] ? lock_acquired+0x29e/0x2ae                               
 [<ffffffff81057ef5>] ? get_signal_to_deliver+0x61/0x2b8                        
 [<ffffffff8104e36b>] do_group_exit+0x7f/0xaf                                   
 [<ffffffff81383349>] ? _spin_unlock_irq+0x32/0x37                              
 [<ffffffff8105812e>] get_signal_to_deliver+0x29a/0x2b8                         
 [<ffffffff81010498>] do_notify_resume+0x90/0x8a4                               
 [<ffffffff8138338e>] ? _spin_unlock_irqrestore+0x40/0x57                       
 [<ffffffff8106c6a7>] ? trace_hardirqs_off_caller+0x1f/0xac                     
 [<ffffffff81383395>] ? _spin_unlock_irqrestore+0x47/0x57                       
 [<ffffffff8106d609>] ? trace_hardirqs_on_caller+0x1f/0x153                     
 [<ffffffff81209bc7>] ? tty_ldisc_deref+0x69/0x6e                               
 [<ffffffff81202b5c>] ? tty_read+0x87/0xba                                      
 [<ffffffff81011381>] ? sysret_signal+0x5/0x109                                 
 [<ffffffff8106d609>] ? trace_hardirqs_on_caller+0x1f/0x153                     
 [<ffffffff81011417>] sysret_signal+0x9b/0x109                                  
Code: 24 08 e8 3a ad 0e 00 48 c7 43 18 00 00 00 00 49 ff 8c 24 c8 00 00 00 be
09 00 00 00 48 89 df e8 e9 f3 00 00 8b 43 0c 85 c0 78 04 <0f> 0b eb fe 48 89 df
e8 b7 35 03 00 f6 03 10 0f 84 84 00 00 00        
RIP  [<ffffffff810a8b9e>] __remove_from_page_cache+0x40/0xde                    
 RSP <ffff88007081f928>                                              

Cheers,
Mark.