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(parent: 4fa99b0) | patch
Btrfs: do not overwrite error return value in the get device stats ioctl
authorFilipe Manana <fdmanana@suse.com>
Fri, 14 Dec 2018 19:45:22 +0000 (19:45 +0000)
committerDavid Sterba <dsterba@suse.com>
Mon, 25 Feb 2019 13:13:16 +0000 (14:13 +0100)
commiteee995775444b50a74ac479ee98ff88e6df1b01b
tree8cc665062bed78ba8f9f030a60c70e91e73c02fctree | snapshot
parent4fa99b008fb53ade9bacea51d29b24efee8914a8commit | diff
Btrfs: do not overwrite error return value in the get device stats ioctl

If the call to btrfs_get_dev_stats() failed we would overwrite the error
returned to user space with -EFAULT if the call to copy_to_user() failed
as well. Fix that by calling copy_to_user() only if btrfs_get_dev_stats()
returned success.

Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
fs/btrfs/ioctl.c diff | blob | history
Domain: System / Kernel;