Jan Kara 419e9c38aa iomap: Fix pipe page leakage during splicing ... When splicing using iomap_dio_rw() to a pipe, we may leak pipe pages because bio_iov_iter_get_pages() records that the pipe will have full extent worth of data however if file size is not block size aligned iomap_dio_rw() returns less than what bio_iov_iter_get_pages() set up and splice code gets confused leaking a pipe page with the file tail. Handle the situation similarly to the old direct IO implementation and revert iter to actually returned read amount which makes iter consistent with value returned from iomap_dio_rw() and thus the splice code is happy. Fixes: ff6a9292e6 ("iomap: implement direct I/O") CC: stable@vger.kernel.org Reported-by: syzbot+991400e8eba7e00a26e1@syzkaller.appspotmail.com Signed-off-by: Jan Kara <jack@suse.cz> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Christoph Hellwig <hch@lst.de>		2019-11-22 08:36:02 -08:00
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apply.c	iomap: trace iomap_appply results	2019-11-22 08:36:00 -08:00
buffered-io.c	iomap: Fix overflow in iomap_page_mkwrite	2019-11-07 07:28:18 -08:00
direct-io.c	iomap: Fix pipe page leakage during splicing	2019-11-22 08:36:02 -08:00
fiemap.c	iomap: iomap_bmap should check iomap_apply return value	2019-11-08 07:44:12 -08:00
Makefile	iomap: lift common tracing code from xfs to iomap	2019-10-21 08:51:59 -07:00
seek.c	iomap: use a srcmap for a read-modify-write I/O	2019-10-21 08:51:59 -07:00
swapfile.c	iomap: use a srcmap for a read-modify-write I/O	2019-10-21 08:51:59 -07:00
trace.c	iomap: lift common tracing code from xfs to iomap	2019-10-21 08:51:59 -07:00
trace.h	iomap: trace iomap_appply results	2019-11-22 08:36:00 -08:00