[syzbot] Monthly net report (Mar 2026)

[syzbot]

Hello net maintainers/developers,

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

During the period, 5 new issues were detected and 12 were fixed.
In total, 86 issues are still open and 1711 have already been fixed.

Some of the still happening issues:

Ref Crashes Repro Title
<1> 8474 Yes KMSAN: uninit-value in eth_type_trans (2)
https://syzkaller.appspot.com/bug?extid=0901d0cc75c3d716a3a3
<2> 3481 Yes INFO: task hung in linkwatch_event (4)
https://syzkaller.appspot.com/bug?extid=2ba2d70f288cf61174e4
<3> 2911 Yes WARNING in rcu_check_gp_start_stall
https://syzkaller.appspot.com/bug?extid=111bc509cd9740d7e4aa
<4> 2768 Yes INFO: task hung in synchronize_rcu (4)
https://syzkaller.appspot.com/bug?extid=222aa26d0a5dbc2e84fe
<5> 2101 Yes KMSAN: uninit-value in bpf_prog_run_generic_xdp
https://syzkaller.appspot.com/bug?extid=0e6ddb1ef80986bdfe64
<6> 1995 Yes INFO: task hung in del_device_store
https://syzkaller.appspot.com/bug?extid=6d10ecc8a97cc10639f9
<7> 1650 Yes INFO: task hung in addrconf_dad_work (5)
https://syzkaller.appspot.com/bug?extid=82ccd564344eeaa5427d
<8> 1201 Yes possible deadlock in hsr_dev_xmit (2)
https://syzkaller.appspot.com/bug?extid=fbf74291c3b7e753b481
<9> 626 Yes INFO: rcu detected stall in tc_modify_qdisc
https://syzkaller.appspot.com/bug?extid=9f78d5c664a8c33f4cce
<10> 609 Yes INFO: task hung in switchdev_deferred_process_work (3)
https://syzkaller.appspot.com/bug?extid=d6bbe0f5705cb8a5aa2b

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