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| author | Mike Snitzer <snitzer@redhat.com> | 2021-01-07 02:19:05 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-01-19 20:22:38 +0300 |
| commit | a4cc93ec99d189964ad09fc8f51e99d5a414d986 (patch) | |
| tree | d31b4ffb218e6e61832281edd295a51ce7ebebc5 /drivers/md | |
| parent | f6ced16ce529dda32000b154e254f84118ffbd8e (diff) | |
| download | linux-a4cc93ec99d189964ad09fc8f51e99d5a414d986.tar.xz | |
dm: eliminate potential source of excessive kernel log noise
commit 0378c625afe80eb3f212adae42cc33c9f6f31abf upstream.
There wasn't ever a real need to log an error in the kernel log for
ioctls issued with insufficient permissions. Simply return an error
and if an admin/user is sufficiently motivated they can enable DM's
dynamic debugging to see an explanation for why the ioctls were
disallowed.
Reported-by: Nir Soffer <nsoffer@redhat.com>
Fixes: e980f62353c6 ("dm: don't allow ioctls to targets that don't map to whole devices")
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/dm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 6c755eb0263f..13237b85cfec 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -515,7 +515,7 @@ static int dm_blk_ioctl(struct block_device *bdev, fmode_t mode, * subset of the parent bdev; require extra privileges. */ if (!capable(CAP_SYS_RAWIO)) { - DMWARN_LIMIT( + DMDEBUG_LIMIT( "%s: sending ioctl %x to DM device without required privilege.", current->comm, cmd); r = -ENOIOCTLCMD; |