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oops on umount

To: linux-xfs@xxxxxxxxxxx
Subject: oops on umount
From: Jens Axboe <axboe@xxxxxxx>
Date: Thu, 30 Mar 2000 16:04:33 +0200
Sender: owner-linux-xfs@xxxxxxxxxxx
User-agent: Mutt/1.1.9i

Gave xfs a test spin today. It survived a fair amount of abuse, before
crashing on umount. Here's the oops:

cpu: 0, clocks: 833065, slice: 277688
cpu: 1, clocks: 833065, slice: 277688
CPU:    0
EIP:    0010:[<c0128fba>]
EFLAGS: 00000097
eax: ffffffff   ebx: a85471c7   ecx: cdb90698   edx: 00000000
esi: c0141e84   edi: cdb90640   ebp: c2879c00   esp: c2879bf8
ds: 0018   es: 0018   ss: 0018
Process umount (pid: 308, stackpage=c2879000)
Stack: cdb90698 cdb90698 c2879c1c c0141e87 cdb90698 00000246 00000286 c2879cb0 
       00000282 c2879c50 c0143fdc cdb90640 00000246 00000286 c2879cb0 00000000 
       00000200 332bb600 00000000 00000000 00000286 c2879cb0 c2879cb0 c01438f7 
Call Trace: [<c0141e87>] [<c0143fdc>] [<c01438f7>] [<c0143390>] [<c01bf9d8>] 
[<c0142e70>] [<c018534f>] 
       [<c01ae2f0>] [<c01a0cef>] [<c019fc56>] [<c01ad43a>] [<c019b6dc>] 
[<c01b3eba>] [<c01b440b>] [<c01c3f2d>] 
       [<c01c0efa>] [<c015e634>] [<c015c186>] [<c014d6fc>] [<c014d877>] 
[<c014d9fe>] [<c014da9a>] [<c010bcf0>] 
Code: 19 c0 85 c0 75 f6 0f 31 29 d8 50 6a 01 56 51 e8 de fe ff ff 

>>EIP: c0128fba <_spin_lock_+32/50>
Trace: c0141e87 <pagebuf_hold+5b/cc>
Trace: c0143fdc <pagebuf_segment_apply+38/134>
Trace: c01438f7 <pagebuf_iorequest+43f/574>
Trace: c0143390 <_page_buf_page_apply+0/128>
Trace: c01bf9d8 <xfs_bdstrat_cb+c/14>
Trace: c0142e70 <pagebuf_iostart+158/1e0>
Trace: c018534f <xfs_buf_item_push+33/54>
Trace: c01ae2f0 <xfs_trans_push_ail+160/468>
Trace: c01c0efa <linvfs_put_inode+16/1c>
Code:  c0128fba <_spin_lock_+32/50>            00000000 <_EIP>: <===
Code:  c0128fba <_spin_lock_+32/50>               0:    19 c0                   
sbb    %eax,%eax <===
Code:  c0128fbc <_spin_lock_+34/50>               2:    85 c0                   
test   %eax,%eax
Code:  c0128fbe <_spin_lock_+36/50>               4:    75 f6                   
jne     c0128fb6 <_spin_lock_+2e/50>
Code:  c0128fc0 <_spin_lock_+38/50>               6:    0f 31                   
Code:  c0128fc2 <_spin_lock_+3a/50>               8:    29 d8                   
sub    %ebx,%eax
Code:  c0128fc4 <_spin_lock_+3c/50>               a:    50                      
push   %eax
Code:  c0128fc5 <_spin_lock_+3d/50>               b:    6a 01                   
push   $0x1
Code:  c0128fc7 <_spin_lock_+3f/50>               d:    56                      
push   %esi
Code:  c0128fc8 <_spin_lock_+40/50>               e:    51                      
push   %ecx
Code:  c0128fc9 <_spin_lock_+41/50>               f:    e8 de fe ff ff          
call    c0128eac <lstat_update_time+0/c0>

Looks like it tried to grab a spin lock in use and got caught by
the nmi watchdog.

In addition, this showed up when the partition was full:

xfs_iomap_write returning ERROR 28
write, delalloc. add some code here

*  Jens Axboe <axboe@xxxxxxx>
*  Linux CD/DVD-ROM, SuSE Labs
*  http://kernel.dk

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