[syzbot] Monthly bpf report (Mar 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, 3 new issues were detected and 2 were fixed.
In total, 12 issues are still open and 207 have been fixed so far.

Some of the still happening issues:

Ref Crashes Repro Title
<1> 175     No    KMSAN: uninit-value in bpf_prog_run_generic_xdp
                  https://syzkaller.appspot.com/bug?extid=0e6ddb1ef80986bdfe64
<2> 94      Yes   KMSAN: uninit-value in ___bpf_prog_run (4)
                  https://syzkaller.appspot.com/bug?extid=853242d9c9917165d791
<3> 43      Yes   BUG: unable to handle kernel NULL pointer dereference in sk_msg_recvmsg
                  https://syzkaller.appspot.com/bug?extid=84f695756ed0c4bb3aba
<4> 4       Yes   KMSAN: uninit-value in strnchr
                  https://syzkaller.appspot.com/bug?extid=9b8be5e35747291236c8
<5> 3       Yes   INFO: rcu detected stall in sys_unshare (9)
                  https://syzkaller.appspot.com/bug?extid=872bccd9a68c6ba47718

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