From 60ccf82f5b6e26e10d41783464ca469c070c7d49 Mon Sep 17 00:00:00 2001 From: Diego Calleja Date: Thu, 1 Sep 2011 16:33:57 +0200 Subject: [PATCH] btrfs: fix memory leak in btrfs_defrag_file kmemleak found this: unreferenced object 0xffff8801b64af968 (size 512): comm "btrfs-cleaner", pid 3317, jiffies 4306810886 (age 903.272s) hex dump (first 32 bytes): 00 82 01 07 00 ea ff ff c0 83 01 07 00 ea ff ff ................ 80 82 01 07 00 ea ff ff c0 87 01 07 00 ea ff ff ................ backtrace: [] kmemleak_alloc+0x5c/0xc0 [] kmem_cache_alloc_trace+0x163/0x240 [] btrfs_defrag_file+0xf0/0xb20 [] btrfs_run_defrag_inodes+0x165/0x210 [] cleaner_kthread+0x177/0x190 [] kthread+0x8d/0xa0 [] kernel_thread_helper+0x4/0x10 [] 0xffffffffffffffff "pages" is not always freed. Fix it removing the unnecesary additional return. Signed-off-by: Diego Calleja --- fs/btrfs/ioctl.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index d2b53eb..8ccc106 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -1140,9 +1140,7 @@ int btrfs_defrag_file(struct inode *inode, struct file *file, btrfs_set_super_incompat_flags(disk_super, features); } - if (!file) - kfree(ra); - return defrag_count; + ret = defrag_count; out_ra: if (!file) -- 2.7.4