[Bug 204223] [fstests generic/388 on xfs]: 4.19.58 xfs_nocrc / xfs_reflink null pointer dereference at xfs_trans_brelse+0x21

[bugzilla-daemon@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=204223

--- Comment #2 from Luis Chamberlain (mcgrof@kernel.org) ---
I'm able to now trigger the same crash on an "xfs_reflink" configuration:

# xfs_info /dev/loop5
meta-data=/dev/loop5             isize=512    agcount=4, agsize=1310720 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=1, sparse=1, rmapbt=1
         =                       reflink=1
data     =                       bsize=4096   blocks=5242880, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0, ftype=1
log      =internal log           bsize=4096   blocks=3693, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0

With the default configuration it is not crashing.

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