On 2025-02-26 10:39:04 [+0100], Ricardo Cañuelo Navarro wrote:
> A private syzbot instance reported "KASAN: slab-use-after-free Read in
> dev_map_enqueue" under some runtime environments.
>
> Upstream patch fecef4cd42c6 ("tun: Assign missing bpf_net_context")
> fixes the issue. In order to bring this patch to stable v6.6 it's also
> necessary to bring upstream patch 401cb7dae813 ("net: Reference
> bpf_redirect_info via task_struct on PREEMPT_RT.") as a dependency.
Just to be clear: A problem exists in v6.6 independent of my doing and
401cb7dae813 happens to fix it? The commit fecef4cd42c6 is a fixup for
401cb7dae813.
If so, can you share syzbot's reproducer and/or backtrace/ report?
Sebastian
