Re: linux-2.6.0 + reiser4 oops

[Hans Reiser <reiser@namesys.com>]

Thanks Mark, the weekend has already started here in Moscow, but 
Vladimir will look into this on Monday.  Thanks for the report.

Hans

markw@osdl.org wrote:

> I was testing our DBT-2 workload on linux-2.6.0 with LVM2 and reiser4
> and got the following oops when I attempted to create a database with
> PostgreSQL.  Let me know if I can provide any additional information:
>
> Unable to handle kernel NULL pointer dereference at virtual address 00000000
> printing eip:                                                       
> c014c607      
> *pde = 00104001
> *pte = 00000000
> Oops: 0000 [#1]
> CPU:    7      
> EIP:    0060:[<c014c607>]    Not tainted
> EFLAGS: 00010086                        
> EIP is at page_address+0x17/0xd0
> eax: 00000000   ebx: 00000000   ecx: ea5c58e0   edx: ea21bf20
> esi: f69df200   edi: 00000000   ebp: 00000001   esp: f59abb84
> ds: 007b   es: 007b   ss: 0068                               
> Process ktxnmgrd:run (pid: 16798, threadinfo=f59aa000 task=f5983960)
> Stack: 00000001 e8d77260 f69df200 00000000 00000001 c027fed6 00000000 ea5c58e0 
>       00000020 00000000 00002980 00000000 00000000 00000008 00000020 e8d77260 
>       f69df200 00000020 ea5c5be0 00000020 c02803ff f69df200 ea5c58e0 f7fc7260 
> Call Trace:                                                                    
> [<c027fed6>] __make_request+0x226/0x5e0
> [<c02803ff>] generic_make_request+0x16f/0x1f0
> [<c02f303d>] __map_bio+0x3d/0x120            
> [<c02f32f6>] __clone_and_map+0xc6/0x310
> [<c011fae0>] autoremove_wake_function+0x0/0x50
> [<c02f35c8>] __split_bio+0x88/0x100           
> [<c022000c>] try_by_label+0x2c/0x40
> [<c02f3703>] dm_request+0xc3/0xe0  
> [<c02803ff>] generic_make_request+0x16f/0x1f0
> [<c0165807>] bio_alloc+0xd7/0x1c0            
> [<c02804d4>] submit_bio+0x54/0xa0
> [<c01ece88>] jnode_extent_write+0x3c8/0x430
> [<c01ed157>] alloc_wandered_blocks+0x77/0xc0
> [<c01ed5e2>] reiser4_write_logs+0x1b2/0x300 
> [<c01e464d>] commit_current_atom+0x17d/0x260
> [<c01e50bd>] try_commit_txnh+0xed/0x1b0     
> [<c01e51b8>] commit_txnh+0x38/0xd0     
> [<c011f651>] .text.lock.sched+0x10f/0x12e
> [<c01e385f>] txn_end+0x3f/0x50           
> [<c01e4b57>] commit_some_atoms+0x187/0x220
> [<c01f38f6>] scan_mgr+0x36/0x57           
> [<c01f3528>] ktxnmgrd+0x1a8/0x290
> [<c01f3380>] ktxnmgrd+0x0/0x290  
> [<c01072e9>] kernel_thread_helper+0x5/0xc
>                                          
> Code: 8b 03 a9 00 01 00 00 75 30 8b 0d 8c 33 4a c0 29 cb c1 fb 03 
> <6>note: ktxnmgrd:run[16798] exited with preempt_count 1         
> Debug: sleeping function called from invalid context at include/linux/rwsem.h:43
> in_atomic():1, irqs_disabled():0                                               
> Call Trace:                     
> [<c011f3eb>] __might_sleep+0xab/0xd0
> [<c0122928>] printk+0x178/0x1d0     
> [<c0122ef0>] profile_exit_task+0x20/0x60
> [<c0124a88>] do_exit+0x78/0x4b0         
> [<c010a8bc>] die+0xfc/0x100    
> [<c011a4a9>] do_page_fault+0x1f9/0x58f
> [<c0143180>] __alloc_pages+0xc0/0x370 
> [<c0141c61>] mempool_alloc+0x91/0x190
> [<c011fae0>] autoremove_wake_function+0x0/0x50
> [<c0141c61>] mempool_alloc+0x91/0x190         
> [<c011fae0>] autoremove_wake_function+0x0/0x50
> [<c011fae0>] autoremove_wake_function+0x0/0x50
> [<c011a2b0>] do_page_fault+0x0/0x58f          
> [<c010a205>] error_code+0x2d/0x38   
> [<c014c607>] page_address+0x17/0xd0
> [<c027fed6>] __make_request+0x226/0x5e0
> [<c02803ff>] generic_make_request+0x16f/0x1f0
> [<c02f303d>] __map_bio+0x3d/0x120            
> [<c02f32f6>] __clone_and_map+0xc6/0x310
> [<c011fae0>] autoremove_wake_function+0x0/0x50
> [<c02f35c8>] __split_bio+0x88/0x100           
> [<c022000c>] try_by_label+0x2c/0x40
> [<c02f3703>] dm_request+0xc3/0xe0  
> [<c02803ff>] generic_make_request+0x16f/0x1f0
> [<c0165807>] bio_alloc+0xd7/0x1c0            
> [<c02804d4>] submit_bio+0x54/0xa0
> [<c01ece88>] jnode_extent_write+0x3c8/0x430
> [<c01ed157>] alloc_wandered_blocks+0x77/0xc0
> [<c01ed5e2>] reiser4_write_logs+0x1b2/0x300 
> [<c01e464d>] commit_current_atom+0x17d/0x260
> [<c01e50bd>] try_commit_txnh+0xed/0x1b0     
> [<c01e51b8>] commit_txnh+0x38/0xd0     
> [<c011f651>] .text.lock.sched+0x10f/0x12e
> [<c01e385f>] txn_end+0x3f/0x50           
> [<c01e4b57>] commit_some_atoms+0x187/0x220
> [<c01f38f6>] scan_mgr+0x36/0x57           
> [<c01f3528>] ktxnmgrd+0x1a8/0x290
> [<c01f3380>] ktxnmgrd+0x0/0x290  
> [<c01072e9>] kernel_thread_helper+0x5/0xc
>
>
>  


--
Hans



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