https://github.com/torvalds/linux
Revision c26b5aa8ef0d46035060fded475e6ab957b9f69f authored by Andreas Gruenbacher on 11 November 2018, 11:15:21 UTC, committed by Linus Torvalds on 16 November 2018, 17:35:09 UTC
GFS2 passes the inode buffer head (dibh) from gfs2_iomap_begin to
gfs2_iomap_end in iomap->private.  It sets that private pointer in
gfs2_iomap_get.  Users of gfs2_iomap_get other than gfs2_iomap_begin
would have to release iomap->private, but this isn't done correctly,
leading to a leak of buffer head references.

To fix this, move the code for setting iomap->private from
gfs2_iomap_get to gfs2_iomap_begin.

Fixes: 64bc06bb32 ("gfs2: iomap buffered write support")
Cc: stable@vger.kernel.org # v4.19+
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
1 parent e7445ce
History
Tip revision: c26b5aa8ef0d46035060fded475e6ab957b9f69f authored by Andreas Gruenbacher on 11 November 2018, 11:15:21 UTC
gfs2: Fix iomap buffer head reference counting bug
Tip revision: c26b5aa
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