BUG 820228 - ASSERT trip in qa 017

[pv@xxxxxxxxxxxxx (dxm@xxxxxxxxxxxx)]

View Incident: 
http://co-op.engr.sgi.com/BugWorks/code/bwxquery.cgi?search=Search&wlong=1&view_type=Bug&wi=820228

Submitter : dxm                       Submitter Domain : engr               
Assigned Engineer : nb                Assigned Domain : sgi.com             
Assigned Group : xfs-linux            Category : software                   
Customer Reported : F                 Priority : 2                          
Project : xfs-linux                   Status : open                         
Description :
repeatable assertion trip in qa 017. looks like 013 can
also trip it.

looks like it got introduced sometime between april 4 and 
april 5 aest.(ie not there after the 2.4.3 merge, not there 
after the group quota, there this morning)


XFS assertion failed: tp->t_blk_res_used <= tp->t_blk_res, file: xfs_trans.c, 
line: 335
kernel BUG at debug.c:48!

Entering kdb (current=0xc752c000, pid 7515) on processor 0 Oops: invalid 
operand
due to oops @ 0xc8880d7d
eax = 0x0000001a ebx = 0xc5485ba0 ecx = 0x00000001 edx = 0x00000001 
esi = 0xffffffff edi = 0xc752db60 esp = 0xc752d930 eip = 0xc8880d7d 
ebp = 0xc752d93c xss = 0x00000018 xcs = 0x00000010 eflags = 0x00010282 
xds = 0x00000018 xes = 0x00000018 origeax = 0xffffffff &regs = 0xc752d8fc
[0]kdb> bt
    EBP       EIP         Function(args)
0xc752d93c 0xc8880d7d [xfs_support]assfail+0x2d (0xc89200a0, 0xc891fef6, 0x14f)
                               xfs_support .text 0xc8880060 0xc8880d50 
0xc8880d84
0xc752d958 0xc88eead6 [xfs]xfs_trans_mod_sb+0x142 (0xc5485ba0, 0x4, 0xffffffff)
                               xfs .text 0xc8886060 0xc88ee994 0xc88eec30
0xc752d974 0xc8892630 [xfs]xfs_alloc_ag_vextent+0x278 (0xc752db60)
                               xfs .text 0xc8886060 0xc88923b8 0xc889264c
0xc752d9a0 0xc8895131 [xfs]xfs_alloc_vextent+0x3c1 (0xc752db60)
                               xfs .text 0xc8886060 0xc8894d70 0xc889525c
0xc752dbb0 0xc88a54ac [xfs]xfs_bmap_alloc+0x1930 (0xc752dce0)
                               xfs .text 0xc8886060 0xc88a3b7c 0xc88a577c
0xc752dd2c 0xc88a9790 [xfs]xfs_bmapi+0x884 (0xc5485ba0, 0xc6b74940, 0x29, 0x0, 
0x1)
                               xfs .text 0xc8886060 0xc88a8f0c 0xc88aa8b8
0xc752de6c 0xc890524d [xfs]xfs_strategy+0x729 (0xc6b74958, 0x29000, 0x0, 
0x1000, 0x10002)
                               xfs .text 0xc8886060 0xc8904b24 0xc8905698
0xc752dea0 0xc8903183 [xfs]linvfs_pb_bmap+0x63 (0xc18e29e0, 0x29000, 0x0, 
0x1000, 0xc752dee0)
                               xfs .text 0xc8886060 0xc8903120 0xc8903190
0xc752defc 0xc887a954 [pagebuf]pagebuf_delalloc_convert+0x44 (0xc18e29e0, 
0xc10d70b4, 0x10002, 0xc8903120)
                               pagebuf .text 0xc8876060 0xc887a910 0xc887aa00
0xc752df40 0xc8879641 [pagebuf]pagebuf_write_full_page+0x69 (0xc10d70b4, 
0xc8903120)
                               pagebuf .text 0xc8876060 0xc88795d8 0xc8879764
0xc752df50 0xc8903341 [xfs]linvfs_write_full_page_nounlock+0x11 (0xc10d70b4)
                               xfs .text 0xc8886060 0xc8903330 0xc8903350
0xc752df68 0xc013356c _write_buffer+0x7c (0xc6578420, 0xc752c000)
                               kernel .text 0xc0100000 0xc01334f0 0xc01335c0
0xc752df98 0xc0133776 sync_buffers+0x1b6 (0x0, 0x0)
                               kernel .text 0xc0100000 0xc01335c0 0xc01337c4
0xc752dfb0 0xc0133801 fsync_dev+0x11 (0x0)
                               kernel .text 0xc0100000 0xc01337f0 0xc0133884
0xc752dfbc 0xc013388e sys_sync+0xa (0x804ec28, 0x65d12b9a, 0x65d12b9a, 
0x4000ae60, 0xbffffb2c)
                               kernel .text 0xc0100000 0xc0133884 0xc0133894
           0xc01070d7 system_call+0x33
                               kernel .text 0xc0100000 0xc01070a4 0xc01070dc