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(parent: 5037108) | patch
dm: cope with access beyond end of device in dm_merge_bvec
authorMikulas Patocka <mpatocka@redhat.com>
Wed, 1 Oct 2008 13:39:24 +0000 (14:39 +0100)
committerAlasdair G Kergon <agk@redhat.com>
Wed, 1 Oct 2008 13:39:24 +0000 (14:39 +0100)
commitb01cd5ac43b00c49759c126c21e7d22c7e80b245
treeccfda9067457032999a5d2d6ed5203caa2422937tree | snapshot
parent5037108acd4dc40c210321cc83b0bf8352eda95acommit | diff
dm: cope with access beyond end of device in dm_merge_bvec

If for any reason dm_merge_bvec() is given an offset beyond the end of the
device, avoid an oops and always allow one page to be added to an empty bio.
We'll reject the I/O later after the bio is submitted.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
drivers/md/dm.c diff | blob | history
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