Properly allocate the space for the bio_vecs instead of just one byte
per bio_vec.
Fixes: 991fc1d2e65e ("xfs: use bios directly to write log buffers")
Reported-by: syzbot+b75afdbe271a0d7ac4f6@xxxxxxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
fs/xfs/xfs_log.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c
index 0f849b4095d6..e230f3c18ceb 100644
--- a/fs/xfs/xfs_log.c
+++ b/fs/xfs/xfs_log.c
@@ -1415,7 +1415,8 @@ 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)
--
2.20.1
