Anton Lindqvist (anton@) "Add kcov(4), a kernel code coverage tracing driver. It's used in conjunction with the #syzkaller kernel fuzzer. So far, 8 distinct panics have been found and fixed. This effort will continue." #OpenBSD marc.info/?l=openbsd-cvs…

Slides for my "Fuzzing the OpenBSD Kernel" presentation held at the Stockholm BSD meetup this evening: mptre.github.io/talks/obsd-fuz…

Anton Lindqvist (anton@) "Add kubsan(4), a undefined behavior sanitizer for the kernel. It's capable of detecting undefined behavior at runtime and all findings are printed to the system console, including the offending line in the source code." #OpenBSD marc.info/?l=openbsd-cvs…

Support for remote coverage had been added to #OpenBSD's kcov(4) kernel code coverage tracing driver. Full commit: marc.info/?l=openbsd-cvs… #syzkaller #fuzzing HT Anton Lindqvist ☺️

anton@ modified sys/dev/kcov.c: Collect coverage from interrupts. Currently limited to remote sections which allows coverage of timeouts executed from softclock to be collected. During boot, a dedicated coverage buffer per CPU is allocated which is used to collect coverage in...

anton@ changed s*: Add uhidpp(4), a driver for Logitech HID++ devices. Currently limited to exposing battery sensors for HID++ 2.0 devices. Most of the code is derived from the hid-logitech-hidpp Linux driver. Thanks to Ville Valkonen <weezeldinga at gmail dot com> for testing...

kernel normal form formatter github.com/mptre/knfmt

anton@ changed sys: Add ucc(4), a driver for USB HID Consumer Control keyboards. Such keyboard is a pseudo device which is used to expose audio and application launch keys. My prime motivation is to get the volume mute, increment and decrement keys to just work on my keyboard...

Should remove the need to tweak irq for com at isa attachments using either config(8) or bsd.re-config(5).

The volume keys on my Logitech headset finally does the right thing. github.com/openbsd/src/co…

Battery sensors for more Logitech devices should now be supported in -current.

New quite packed release of knfmt. Most notably, it can interoperate with clang-format. Only a subset of its style options are currently supported. github.com/mptre/knfmt/re…