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Date: Tue, 16 Jun 2020 11:31:59 -0400 From: Waiman Long <longman@...hat.com> To: Chris Mason <clm@...com>, Josef Bacik <josef@...icpanda.com>, David Sterba <dsterba@...e.com> Cc: linux-kernel@...r.kernel.org, linux-btrfs@...r.kernel.org, Waiman Long <longman@...hat.com> Subject: [PATCH] btrfs: Use kfree() in btrfs_ioctl_get_subvol_info() In btrfs_ioctl_get_subvol_info(), there is a classic case where kzalloc() was incorrectly paired with kzfree(). According to David Sterba, there isn't any sensitive information in the subvol_info that needs to be cleared before freeing. So kzfree() isn't really needed, use kfree() instead. Reported-by: David Sterba <dsterba@...e.cz> Signed-off-by: Waiman Long <longman@...hat.com> --- fs/btrfs/ioctl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index 168deb8ef68a..e8f7c5f00894 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -2692,7 +2692,7 @@ static int btrfs_ioctl_get_subvol_info(struct file *file, void __user *argp) btrfs_put_root(root); out_free: btrfs_free_path(path); - kzfree(subvol_info); + kfree(subvol_info); return ret; } -- 2.18.1
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