On Tue, Oct 22, 2024 at 02:36 AM GMT, Ruan Bonan wrote: > I used Syzkaller and found that there is KASAN: null-ptr-deref (general protection fault in > sock_map_link_update_prog) in net/core/sock_map.c in v6.12.0-rc2, which also causes a KASAN: > slab-use-after-free at the same time. It looks like a concurrency bug in the BPF related subsystems. The > reproducer is available, and I have reproduced this bug with it manually. Currently I can only reproduce this > bug with root privilege. > > The detailed reports, config file, and reproducer program are attached in this e-mail. If you need further > details, please let me know. Thanks for the report. I was also able to reproduce the KASAN splat with the attached repro locally and will investigate futher. I have a small ask - please use plain text for mailing the list in the future - https://useplaintext.email/ -jkbs
