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Commit 89b171ac authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Darrick J. Wong
Browse files

xfs: fix iclog allocation size 



Properly allocate the space for the bio_vecs instead of just one byte
per bio_vec.

Fixes: 79b54d9b ("xfs: use bios directly to write log buffers")
Reported-by: default avatar <syzbot+b75afdbe271a0d7ac4f6@syzkaller.appspotmail.com>
Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarDarrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: default avatarDarrick J. Wong <darrick.wong@oracle.com>
parent 250d4b4c

fs/xfs/xfs_log.c

+2 −1
Original line number Diff line number Diff line
@@ -1411,7 +1411,8 @@ xlog_alloc_log( 
	 */

	ASSERT(log->l_iclog_size >= 4096);

	for (i = 0; i < log->l_iclog_bufs; i++) {

		size_t bvec_size = howmany(log->l_iclog_size, PAGE_SIZE);

		size_t bvec_size = howmany(log->l_iclog_size, PAGE_SIZE) *

				sizeof(struct bio_vec);



		iclog = kmem_zalloc(sizeof(*iclog) + bvec_size, KM_MAYFAIL);

		if (!iclog)