On Wed, Aug 13, 2025 at 03:38:32PM +0200, Jiri Olsa wrote: > From: Jiri Olsa <olsajiri@xxxxxxxxx> > > syzbot reported an verifier bug [1] where the helper func pointer > could be NULL due to disabled config option. > > As Alexei suggested we could check on that in get_helper_proto > directly. Excluding tail_call helper from the check, because it > is NULL by design and valid in all configs. > > [1] https://lore.kernel.org/bpf/68904050.050a0220.7f033.0001.GAE@xxxxxxxxxx/ > Reported-by: syzbot+a9ed3d9132939852d0df@xxxxxxxxxxxxxxxxxxxxxxxxx The same bug was reported before by the kernel test robot at https://lore.kernel.org/oe-lkp/202507160818.68358831-lkp@xxxxxxxxx, so I guess we'll need: Reported-by: kernel test robot <oliver.sang@xxxxxxxxx> Closes: https://lore.kernel.org/oe-lkp/202507160818.68358831-lkp@xxxxxxxxx With that, Acked-by: Paul Chaignon <paul.chaignon@xxxxxxxxx> [...]
