diff options
| author | Colin Ian King <colin.i.king@gmail.com> | 2024-10-24 12:04:31 +0100 |
|---|---|---|
| committer | Mikulas Patocka <mpatocka@redhat.com> | 2024-11-20 11:38:04 +0100 |
| commit | 51f0659f8777fe8ba9feef26e1d34f18edd1687c (patch) | |
| tree | 58615b44bc89d6b4bebb59f0a955585be8c7e56a /drivers | |
| parent | b0e6210e7e616cdd045492576b92417aebcdde99 (diff) | |
dm ioctl: rate limit a couple of ioctl based error messages
It is possible to spam the kernel log with a misbehaving user process that
is passing incorrect dm ioctls to /dev/mapper/control. Use a rate limit
on these error messages to reduce the noise.
These errors were hit when running the stress-ng's device test.
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Acked-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/md/dm-ioctl.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c index f299ff393a6a..d42eac944eb5 100644 --- a/drivers/md/dm-ioctl.c +++ b/drivers/md/dm-ioctl.c @@ -1912,7 +1912,7 @@ static int check_version(unsigned int cmd, struct dm_ioctl __user *user, if ((kernel_params->version[0] != DM_VERSION_MAJOR) || (kernel_params->version[1] > DM_VERSION_MINOR)) { - DMERR("ioctl interface mismatch: kernel(%u.%u.%u), user(%u.%u.%u), cmd(%d)", + DMERR_LIMIT("ioctl interface mismatch: kernel(%u.%u.%u), user(%u.%u.%u), cmd(%d)", DM_VERSION_MAJOR, DM_VERSION_MINOR, DM_VERSION_PATCHLEVEL, kernel_params->version[0], @@ -1961,7 +1961,7 @@ static int copy_params(struct dm_ioctl __user *user, struct dm_ioctl *param_kern if (unlikely(param_kernel->data_size < minimum_data_size) || unlikely(param_kernel->data_size > DM_MAX_TARGETS * DM_MAX_TARGET_PARAMS)) { - DMERR("Invalid data size in the ioctl structure: %u", + DMERR_LIMIT("Invalid data size in the ioctl structure: %u", param_kernel->data_size); return -EINVAL; } |