I think it didn't happen on older kernel because the report size 192 >
128 so the code bailed early.
Try this:
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 9993b692598f..860e21ec6a49 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1301,10 +1301,10 @@ static u32 __extract(u8 *report, unsigned offset, int n)
u32 hid_field_extract(const struct hid_device *hid, u8 *report,
unsigned offset, unsigned n)
{
- if (n > 32) {
- hid_warn(hid, "hid_field_extract() called with n (%d) > 32!
(%s)\n",
+ if (n > 256) {
+ hid_warn(hid, "hid_field_extract() called with n (%d) > 256!
(%s)\n",
n, current->comm);
- n = 32;
+ n = 256;
}
return __extract(report, offset, n);
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1818547
Title:
hid-sensor-hub spamming dmesg in 4.20
Status in linux package in Ubuntu:
Confirmed
Bug description:
Dmesg is a constant barrage of the same error:
```
[ 406.165461] hid-sensor-hub 001F:8086:22D8.0002: hid_field_extract() called
with n (192) > 32! (kworker/5:1)
```
This does not occur in 4.19 but does occur in all mainline 4.20
releases including 4.20.13 (linux-image-unsigned-4.20.13-042013).
Tested with both Ubuntu's included libinput 1.10 and an updated
libinput 1.12.
Hardware (from lspci) includes a synaptic touchpad. Having the xorg
synaptic driver installed makes no difference.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1818547/+subscriptions
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