[syzbot] Monthly net report (Nov 2025)

syzbot
2025-11-17T07:50:30Z

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 7 were fixed.
In total, 99 issues are still open and 1640 have already been fixed.

Some of the still happening issues:

Ref Crashes Repro Title
<1> 20003 Yes WARNING in xfrm6_tunnel_net_exit (4)
https://syzkaller.appspot.com/bug?extid=3df59a64502c71cab3d5
<2> 15678 Yes KASAN: slab-use-after-free Read in __ethtool_get_link_ksettings
https://syzkaller.appspot.com/bug?extid=5fe14f2ff4ccbace9a26
<3> 14160 Yes BUG: workqueue lockup (5)
https://syzkaller.appspot.com/bug?extid=f0b66b520b54883d4b9d
<4> 7864 Yes KMSAN: uninit-value in eth_type_trans (2)
https://syzkaller.appspot.com/bug?extid=0901d0cc75c3d716a3a3
<5> 3393 Yes INFO: task hung in linkwatch_event (4)
https://syzkaller.appspot.com/bug?extid=2ba2d70f288cf61174e4
<6> 2760 Yes WARNING in rcu_check_gp_start_stall
https://syzkaller.appspot.com/bug?extid=111bc509cd9740d7e4aa
<7> 1916 Yes KMSAN: uninit-value in bpf_prog_run_generic_xdp
https://syzkaller.appspot.com/bug?extid=0e6ddb1ef80986bdfe64
<8> 1894 Yes INFO: task hung in del_device_store
https://syzkaller.appspot.com/bug?extid=6d10ecc8a97cc10639f9
<9> 1580 Yes INFO: task hung in addrconf_dad_work (5)
https://syzkaller.appspot.com/bug?extid=82ccd564344eeaa5427d
<10> 1537 Yes INFO: task hung in synchronize_rcu (4)
https://syzkaller.appspot.com/bug?extid=222aa26d0a5dbc2e84fe

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