[PATCH] HID: core: demote warning to debug level

Ben Hutchings <[email protected]> Sun, 16 Aug 2026 11:10:40 +0200

Newsgroups	org.kernel.vger.linux-input,org.kernel.vger.linux-kernel
Message-ID	<[email protected]>

From: Matteo Croce <[email protected]>

The log level for short  messages was changed from debug to warning,
flooding syslog on systems with devices that regularly send
short reports, in my case an UPS:

    $ dmesg |grep -c 'Event data for report .* was too short'
    35

Demote it back to debug level.

Fixes: 0a3fe972a7cb ("HID: core: Mitigate potential OOB by removing bogus memset()")
Signed-off-by: Matteo Croce <[email protected]>
[bwh: Re-sending this fix which was applied and then lost in a mis-
 merge.  Add a second Fixes trailer so this should reach all stable
 branches that have the warning.]
Fixes: 2c85c61d1332 ("HID: pass the buffer size to hid_report_raw_event")
Cc: [email protected]
Signed-off-by: Ben Hutchings <[email protected]>
---
This was originally posted at
<https://lore.kernel.org/linux-input/[email protected]/>
and applied to the hid tree as commit d0ff08d946c8, but then it was
lost in merge commit aa776949fb77 "Merge branch 'for-7.2/wiimote' into
for-linus".

Ben.

 drivers/hid/hid-core.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index cf123347a2af..605530ec2e9c 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -2079,8 +2079,8 @@ int hid_report_raw_event(struct hid_device *hid, enum hid_report_type type, u8 *
 		rsize = max_buffer_size;
 
 	if (bsize < rsize) {
-		hid_warn_ratelimited(hid, "Event data for report %d was too short (%d vs %zu)\n",
-				     report->id, rsize, bsize);
+		hid_dbg_ratelimited(hid, "Event data for report %d was too short (%d vs %zu)\n",
+				    report->id, rsize, bsize);
 		return -EINVAL;
 	}

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