Hi Salvatore. Thank you for the reply. Before I got to the bisect, the 7.2.12-1 got out and this version is working again fine regarding the hostapd.
On Wed, 2026-10-21 at 09:07 +0200, Salvatore Bonaccorso wrote: > Control: tags -1 + moreinfo > > Hi Michal, > > On Wed, Oct 21, 2026 at 12:11:43AM +0200, Michal Kaspar wrote: > > Package: src:linux > > Version: 7.2.11-1 > > Severity: normal > > > > Dear Maintainer, > > > > Afeter kernel upgrade to 7.2.11+deb14-amd64 the hostapd stopped > > working. When debuging the problem, I fuound the reason is the > > Mediatek Wireless device failing to set in the AP mode. THe debug > > information from hostapd below. > > After reboot to 7.2.9+deb14-amd64 kernel, the problem went off > > immediately so the changes between these 2 versions must have lead > > to the problem. > > Sorry for that. Could you please bisect the changes between 7.2.9 and > 7.2.11 upstream with the following procedure please, so we can > identify the problemtic change? > > git clone --single-branch -b linux-7.2.y > https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git > cd linux-stable > git checkout v7.2.9 > cp /boot/config-$(uname -r) .config > yes '' | make localmodconfig > make savedefconfig > mv defconfig arch/x86/configs/my_defconfig > > # test 7.2.9 to ensure this is "good" > make my_defconfig > make -j $(nproc) bindeb-pkg > ... install the resulting .deb package and confirm problem does > not exist > > # test 7.2.11 to ensure this is "bad" > git checkout v7.2.11 > make my_defconfig > make -j $(nproc) bindeb-pkg > ... install the resulting .deb package and confirm problem exists > > With that confirmed, the bisection can start: > > git bisect start > git bisect good v7.2.9 > git bisect bad v7.2.11 > > In each bisection step git checks out a state between the oldest > known-bad and the newest known-good commit. In each step test using: > > make my_defconfig > make -j $(nproc) bindeb-pkg > ... install, try to verify if problem exists > > and if the problem is hit run: > > git bisect bad > > and if the problem doesn't trigger run: > > git bisect good > > . Please pay attention to always select the just built kernel for > booting, it won't always be the default kernel picked up by grub. > > Iterate until git announces to have identified the first bad commit. > > Then provide the output of > > git bisect log > > In the course of the bisection you might have to uninstall previous > kernels again to not exhaust the disk space in /boot. Also in the end > uninstall all self-built kernels again. > > Regards, > Salvatore -- Michal Kašpar
