[syzbot] Monthly net report (Sep 2025)

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, 8 new issues were detected and 6 were fixed.
In total, 107 issues are still open and 1615 have already been fixed.

Some of the still happening issues:

Ref  Crashes Repro Title
<1>  13347   Yes   BUG: workqueue lockup (5)
                   https://syzkaller.appspot.com/bug?extid=f0b66b520b54883d4b9d
<2>  11498   Yes   KASAN: slab-use-after-free Read in __ethtool_get_link_ksettings
                   https://syzkaller.appspot.com/bug?extid=5fe14f2ff4ccbace9a26
<3>  7829    Yes   WARNING: suspicious RCU usage in dev_deactivate_queue
                   https://syzkaller.appspot.com/bug?extid=ca9ad1d31885c81155b6
<4>  7624    Yes   KMSAN: uninit-value in eth_type_trans (2)
                   https://syzkaller.appspot.com/bug?extid=0901d0cc75c3d716a3a3
<5>  3337    Yes   INFO: task hung in linkwatch_event (4)
                   https://syzkaller.appspot.com/bug?extid=2ba2d70f288cf61174e4
<6>  2653    Yes   WARNING in rcu_check_gp_start_stall
                   https://syzkaller.appspot.com/bug?extid=111bc509cd9740d7e4aa
<7>  1860    Yes   INFO: task hung in del_device_store
                   https://syzkaller.appspot.com/bug?extid=6d10ecc8a97cc10639f9
<8>  1782    Yes   KMSAN: uninit-value in bpf_prog_run_generic_xdp
                   https://syzkaller.appspot.com/bug?extid=0e6ddb1ef80986bdfe64
<9>  1540    Yes   INFO: task hung in addrconf_dad_work (5)
                   https://syzkaller.appspot.com/bug?extid=82ccd564344eeaa5427d
<10> 1383    No    KASAN: use-after-free Read in __xfrm_state_insert
                   https://syzkaller.appspot.com/bug?extid=409c1e76795047429447

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