From: Ilija Hadzic <[email protected]> Subject: devpts: plug the memory leak in kill_sb
When devpts is unmounted, there may be a no-longer-used IDR tree hanging off the superblock we are about to kill. This needs to be cleaned up before destroying the SB. The leak is usually not a big deal because unmounting devpts is typically done when shutting down the whole machine. However, shutting down an LXC container instead of a physical machine exposes the problem (the garbage is detectable with kmemleak). Signed-off-by: Ilija Hadzic <[email protected]> Cc: Sukadev Bhattiprolu <[email protected]> Cc: <[email protected]> Signed-off-by: Andrew Morton <[email protected]> --- fs/devpts/inode.c | 1 + 1 file changed, 1 insertion(+) diff -puN fs/devpts/inode.c~devpts-plug-the-memory-leak-in-kill_sb fs/devpts/inode.c --- a/fs/devpts/inode.c~devpts-plug-the-memory-leak-in-kill_sb +++ a/fs/devpts/inode.c @@ -498,6 +498,7 @@ static void devpts_kill_sb(struct super_ { struct pts_fs_info *fsi = DEVPTS_SB(sb); + ida_destroy(&fsi->allocated_ptys); kfree(fsi); kill_litter_super(sb); } _ -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
