[syzbot] Monthly bpf report (Jun 2024)

[syzbot]

Hello bpf maintainers/developers,

This is a 31-day syzbot report for the bpf subsystem.
All related reports/information can be found at:
https://syzkaller.appspot.com/upstream/s/bpf

During the period, 11 new issues were detected and 4 were fixed.
In total, 53 issues are still open and 252 have been fixed so far.

Some of the still happening issues:

Ref  Crashes Repro Title
<1>  8630    Yes   possible deadlock in task_fork_fair
                   https://syzkaller.appspot.com/bug?extid=1a93ee5d329e97cfbaff
<2>  8113    Yes   KASAN: slab-out-of-bounds Read in btf_datasec_check_meta
                   https://syzkaller.appspot.com/bug?extid=cc32304f6487ebff9b70
<3>  869     Yes   possible deadlock in sock_map_delete_elem
                   https://syzkaller.appspot.com/bug?extid=4ac2fe2b496abca8fa4b
<4>  733     Yes   WARNING in bpf_map_lookup_percpu_elem
                   https://syzkaller.appspot.com/bug?extid=dce5aae19ae4d6399986
<5>  385     Yes   possible deadlock in __bpf_ringbuf_reserve
                   https://syzkaller.appspot.com/bug?extid=850aaf14624dc0c6d366
<6>  165     Yes   KMSAN: uninit-value in ___bpf_prog_run (4)
                   https://syzkaller.appspot.com/bug?extid=853242d9c9917165d791
<7>  153     Yes   general protection fault in dev_map_enqueue (2)
                   https://syzkaller.appspot.com/bug?extid=cca39e6e84a367a7e6f6
<8>  136     Yes   possible deadlock in __queue_map_get
                   https://syzkaller.appspot.com/bug?extid=8bdfc2c53fb2b63e1871
<9>  89      Yes   WARNING in __xdp_reg_mem_model
                   https://syzkaller.appspot.com/bug?extid=f534bd500d914e34b59e
<10> 88      Yes   BUG: unable to handle kernel NULL pointer dereference in sk_msg_recvmsg
                   https://syzkaller.appspot.com/bug?extid=84f695756ed0c4bb3aba

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