diff options
| author | Li Chen <chenl311@chinatelecom.cn> | 2025-06-20 20:02:31 +0800 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.com> | 2025-06-20 15:34:36 +0200 |
| commit | 4051ead99888f101be92c7ce90d2de09aac6fd1c (patch) | |
| tree | 59a2d804ef25d93b1dfd6fb56af8504f91ffe14a /include/linux/hid.h | |
| parent | 37a9acb971c2f338e7a1b602b0ee40ad70668e81 (diff) | |
HID: rate-limit hid_warn to prevent log flooding
Syzkaller can create many uhid devices that trigger
repeated warnings like:
"hid-generic xxxx: unknown main item tag 0x0"
These messages can flood the system log, especially if a crash occurs
(e.g., with a slow UART console, leading to soft lockups). To mitigate
this, convert `hid_warn()` to use `dev_warn_ratelimited()`.
This helps reduce log noise and improves system stability under fuzzing
or faulty device scenarios.
Signed-off-by: Li Chen <chenl311@chinatelecom.cn>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
Diffstat (limited to 'include/linux/hid.h')
| -rw-r--r-- | include/linux/hid.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/hid.h b/include/linux/hid.h index 568a9d8c749b..7f260e0e2049 100644 --- a/include/linux/hid.h +++ b/include/linux/hid.h @@ -1239,6 +1239,8 @@ void hid_quirks_exit(__u16 bus); dev_notice(&(hid)->dev, fmt, ##__VA_ARGS__) #define hid_warn(hid, fmt, ...) \ dev_warn(&(hid)->dev, fmt, ##__VA_ARGS__) +#define hid_warn_ratelimited(hid, fmt, ...) \ + dev_warn_ratelimited(&(hid)->dev, fmt, ##__VA_ARGS__) #define hid_info(hid, fmt, ...) \ dev_info(&(hid)->dev, fmt, ##__VA_ARGS__) #define hid_dbg(hid, fmt, ...) \ |