[syzbot] Monthly bpf report (Jan 2026)

[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, 6 new issues were detected and 0 were fixed.
In total, 26 issues are still open and 316 have already been fixed.

Some of the still happening issues:

Ref Crashes Repro Title
<1> 12832   Yes   WARNING in reg_bounds_sanity_check (2)
                  https://syzkaller.appspot.com/bug?extid=c950cc277150935cc0b5
<2> 101     No    INFO: task hung in dev_map_free (3)
                  https://syzkaller.appspot.com/bug?extid=9bb2e1829da8582dcffa
<3> 34      No    KMSAN: uninit-value in handle_bug
                  https://syzkaller.appspot.com/bug?extid=ba80855313e6fa65717a
<4> 29      No    KCSAN: data-race in __htab_map_lookup_elem / bpf_lru_pop_free
                  https://syzkaller.appspot.com/bug?extid=ad4661d6ca888ce7fe11
<5> 21      Yes   inconsistent lock state in bpf_lru_push_free
                  https://syzkaller.appspot.com/bug?extid=c69a0a2c816716f1e0d5
<6> 4       Yes   INFO: rcu detected stall in task_work_add
                  https://syzkaller.appspot.com/bug?extid=f2cf09711ff194bc2c22
<7> 3       Yes   KMSAN: uninit-value in bpf_prog_test_run_skb
                  https://syzkaller.appspot.com/bug?extid=619b9ef527f510a57cfc

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