From d33d105b85d6099e2499c536fb6fbb2dc65ea644 Mon Sep 17 00:00:00 2001 From: David Sterba Date: Fri, 15 Mar 2019 16:46:55 +0100 Subject: [PATCH] btrfs: tests: don't leak fs_info in extent_io bitmap tests The fs_info is not freed at the end of the function and leaks. The function is called twice so there can be up to 2x sizeof(struct btrfs_fs_info) of leaked memory. Fortunatelly this affects only testing builds, the size could be 16k with several debugging features enabled. Signed-off-by: David Sterba --- fs/btrfs/tests/extent-io-tests.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/fs/btrfs/tests/extent-io-tests.c b/fs/btrfs/tests/extent-io-tests.c index 74f69df..24003e9 100644 --- a/fs/btrfs/tests/extent-io-tests.c +++ b/fs/btrfs/tests/extent-io-tests.c @@ -378,8 +378,8 @@ static int test_eb_bitmaps(u32 sectorsize, u32 nodesize) { struct btrfs_fs_info *fs_info; unsigned long len; - unsigned long *bitmap; - struct extent_buffer *eb; + unsigned long *bitmap = NULL; + struct extent_buffer *eb = NULL; int ret; test_msg("running extent buffer bitmap tests"); @@ -400,14 +400,15 @@ static int test_eb_bitmaps(u32 sectorsize, u32 nodesize) bitmap = kmalloc(len, GFP_KERNEL); if (!bitmap) { test_err("couldn't allocate test bitmap"); - return -ENOMEM; + ret = -ENOMEM; + goto out; } eb = __alloc_dummy_extent_buffer(fs_info, 0, len); if (!eb) { test_err("couldn't allocate test extent buffer"); - kfree(bitmap); - return -ENOMEM; + ret = -ENOMEM; + goto out; } ret = __test_eb_bitmaps(bitmap, eb, len); @@ -419,14 +420,15 @@ static int test_eb_bitmaps(u32 sectorsize, u32 nodesize) eb = __alloc_dummy_extent_buffer(NULL, nodesize / 2, len); if (!eb) { test_err("couldn't allocate test extent buffer"); - kfree(bitmap); - return -ENOMEM; + ret = -ENOMEM; + goto out; } ret = __test_eb_bitmaps(bitmap, eb, len); out: free_extent_buffer(eb); kfree(bitmap); + btrfs_free_dummy_fs_info(fs_info); return ret; } -- 2.7.4