https://log.munzzyy.dev/ Embedded and firmware security: kernel drivers, device firmware, and the RF/SDR stack around them. Also the Android apps I ship. Build log: what broke, what I tried, what review caught. en-us Thu, 15 Oct 2026 00:00:00 GMT https://log.munzzyy.dev/posts/a-remote-the-driver-could-not-see.html https://log.munzzyy.dev/posts/a-remote-the-driver-could-not-see.html Thu, 15 Oct 2026 00:00:00 GMT The EMEET C60E's remote zooms the picture, and Linux keeps reporting the old zoom until you unplug the camera. The driver trusts a cache the firmware never tells it to drop. https://log.munzzyy.dev/posts/the-five-minute-freeze.html https://log.munzzyy.dev/posts/the-five-minute-freeze.html Wed, 30 Sep 2026 00:00:00 GMT Location sharing kept stopping on locked Pixels, and every test I ran said it was fixed. None of those tests ran past five minutes, which is when Chromium freezes a hidden page. https://log.munzzyy.dev/posts/a-relay-without-cloudflare.html https://log.munzzyy.dev/posts/a-relay-without-cloudflare.html Wed, 30 Sep 2026 00:00:00 GMT Starling's listing said self-hostable. Someone pointed out that meant self-hostable on Cloudflare, and that the listing never said who hosted the default relay. Both got fixed. https://log.munzzyy.dev/posts/a-second-place-your-location-goes.html https://log.munzzyy.dev/posts/a-second-place-your-location-goes.html Wed, 30 Sep 2026 00:00:00 GMT Someone wanted Starling to also feed their own Reitti and Home Assistant. Sending the data was easy. Making sure the feature can't be turned against the person holding the phone took the thought. https://log.munzzyy.dev/posts/three-apps-under-the-clock.html https://log.munzzyy.dev/posts/three-apps-under-the-clock.html Wed, 30 Sep 2026 00:00:00 GMT A Pixel Fold's outer screen showed Sepia's top bar behind the clock and the camera. Android 15 made every app edge to edge, and three of mine had never noticed. https://log.munzzyy.dev/posts/u-boot-spi-no-wire.html https://munzzyy.github.io/posts/u-boot-spi-no-wire.html Sat, 29 Aug 2026 00:00:00 GMT A U-Boot binding allowed a bus width of zero and nothing downstream understood what that meant. Two patches later, mainline does. https://log.munzzyy.dev/posts/gnu-cpio-overread.html https://munzzyy.github.io/posts/gnu-cpio-overread.html Sat, 29 Aug 2026 00:00:00 GMT A patch got rejected on a correct POSIX argument, which turned out not to be the argument that mattered. Reframing it around malformed input is what got it fixed. https://log.munzzyy.dev/posts/u-boot-never-had-a-btrfs-test.html https://munzzyy.github.io/posts/u-boot-never-had-a-btrfs-test.html Mon, 10 Aug 2026 00:00:00 GMT Writing the filesystem tests U-Boot was missing: a reproducer that had to be synthesized byte by byte, a regression the suite caught, and three patches now in mainline. https://log.munzzyy.dev/posts/two-kernel-patches-for-the-flipper-one.html https://munzzyy.github.io/posts/two-kernel-patches-for-the-flipper-one.html Mon, 10 Aug 2026 00:00:00 GMT A devicetree VBUS fix where my first read was wrong, and a dwc3 gadget fix whose answer had been sitting on the mailing list since 2022.