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authorMike Snitzer <snitzer@redhat.com>2021-01-07 02:19:05 +0300
committerMike Snitzer <snitzer@redhat.com>2021-01-08 23:56:35 +0300
commit0378c625afe80eb3f212adae42cc33c9f6f31abf (patch)
tree49b93c8b1a3b25e541dab9adffb6b450e301d88b /drivers/md
parentfcc42338375a1e67b8568dbb558f8b784d0f3b01 (diff)
downloadlinux-0378c625afe80eb3f212adae42cc33c9f6f31abf.tar.xz
dm: eliminate potential source of excessive kernel log noise
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>
Diffstat (limited to 'drivers/md')
-rw-r--r--drivers/md/dm.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c
index b3c3c8b4cb42..7bac564f3faa 100644
--- a/drivers/md/dm.c
+++ b/drivers/md/dm.c
@@ -562,7 +562,7 @@ 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;