On Thu, Dec 5, 2024 at 11:33 AM Jiri Olsa <olsajiri@xxxxxxxxx> wrote: > > On Wed, Dec 04, 2024 at 04:53:05PM +0100, Laura Nao wrote: > > On 11/15/24 18:17, Laura Nao wrote: > > > I managed to reproduce the issue locally and I've uploaded the vmlinux[1] > > > (stripped of DWARF data) and vmlinux.raw[2] files, as well as one of the > > > modules[3] and its btf data[4] extracted with: > > > > > > bpftool -B vmlinux btf dump file cros_kbd_led_backlight.ko > cros_kbd_led_backlight.ko.raw > > > > > > Looking again at the logs[5], I've noticed the following is reported: > > > > > > [ 0.415885] BPF: type_id=115803 offset=177920 size=1152 > > > [ 0.416029] BPF: > > > [ 0.416083] BPF: Invalid offset > > > [ 0.416165] BPF: > > > > > > There are two different definitions of rcu_data in '.data..percpu', one > > > is a struct and the other is an integer: > > > > > > type_id=115801 offset=177920 size=1152 (VAR 'rcu_data') > > > type_id=115803 offset=177920 size=1152 (VAR 'rcu_data') > > > > > > [115801] VAR 'rcu_data' type_id=115572, linkage=static > > > [115803] VAR 'rcu_data' type_id=1, linkage=static > > > > > > [115572] STRUCT 'rcu_data' size=1152 vlen=69 > > > [1] INT 'long unsigned int' size=8 bits_offset=0 nr_bits=64 encoding=(none) > > > > > > I assume that's not expected, correct? > > > > > > I'll dig a bit deeper and report back if I can find anything else. > > > > I ran a bisection, and it appears the culprit commit is: > > https://lore.kernel.org/all/20241021080856.48746-2-ubizjak@xxxxxxxxx/ > > which tree are you using, I can't see this in linu-next ? The offending commit is now part of linus tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=001217defda86d0d6a5a9e6cf77a6b813857e7e3 Uros.
