Commit 8606a1a9 authored by Darrick J. Wong's avatar Darrick J. Wong Committed by Linus Torvalds

mm: kvfree the swap cluster info if the swap file is unsatisfactory

If initializing a small swap file fails because the swap file has a
problem (holes, etc.) then we need to free the cluster info as part of
cleanup.  Unfortunately a previous patch changed the code to use kvzalloc
but did not change all the vfree calls to use kvfree.

Found by running generic/357 from xfstests.

Link: http://lkml.kernel.org/r/20170831233515.GR3775@magnolia
Fixes: 54f180d3 ("mm, swap: use kvzalloc to allocate some swap data structures")
Signed-off-by: default avatarDarrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: default avatar"Huang, Ying" <ying.huang@intel.com>
Acked-by: default avatarDavid Rientjes <rientjes@google.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: <stable@vger.kernel.org>	[4.12+]
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent f19360f0
...@@ -3290,7 +3290,7 @@ SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags) ...@@ -3290,7 +3290,7 @@ SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags)
p->flags = 0; p->flags = 0;
spin_unlock(&swap_lock); spin_unlock(&swap_lock);
vfree(swap_map); vfree(swap_map);
vfree(cluster_info); kvfree(cluster_info);
if (swap_file) { if (swap_file) {
if (inode && S_ISREG(inode->i_mode)) { if (inode && S_ISREG(inode->i_mode)) {
inode_unlock(inode); inode_unlock(inode);
......
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