last executing test programs:
432.535962ms ago: executing program 2:
sendmsg(0xffffffffffffffff, &(0x7f0000000000), 0x0)
347.650085ms ago: executing program 1:
connect(0xffffffffffffffff, &(0x7f0000000000), 0x0)
321.32884ms ago: executing program 0:
ioctl(0xffffffffffffffff, 0x0, &(0x7f0000000000))
73.148329ms ago: executing program 2:
write(0xffffffffffffffff, &(0x7f0000000000), 0x0)
0s ago: executing program 1:
setsockopt(0xffffffffffffffff, 0x0, 0x0, &(0x7f0000000000), 0x0)
kernel console output (not intermixed with test programs):
Warning: Permanently added '10.128.0.22' (ED25519) to the list of known hosts.
2024/06/18 13:55:14 fuzzer started
2024/06/18 13:55:14 dialing manager at 10.128.0.163:30035
[ 59.763983][ T5094] cgroup: Unknown subsys name 'net'
[ 60.065427][ T5094] cgroup: Unknown subsys name 'rlimit'
[ 61.222581][ T5110] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 61.236338][ T5110] syz-executor (5110) used greatest stack depth: 18800 bytes left
2024/06/18 13:55:22 starting 3 executor processes
[ 67.886953][ T2419]
[ 67.889470][ T2419] =============================
[ 67.894799][ T2419] WARNING: suspicious RCU usage
[ 67.899685][ T2419] 6.10.0-rc3-syzkaller-00705-g8c379e3ce404 #0 Not tainted
[ 67.907096][ T2419] -----------------------------
[ 67.911969][ T2419] net/netfilter/ipset/ip_set_core.c:1200 suspicious rcu_dereference_protected() usage!
[ 67.921715][ T2419]
[ 67.921715][ T2419] other info that might help us debug this:
[ 67.921715][ T2419]
[ 67.932268][ T2419]
2024/06/18 13:55:23 SYZFATAL: failed to recv *flatrpc.HostMessageRaw: EOF
[ 67.932268][ T2419] rcu_scheduler_active = 2, debug_locks = 1
[ 67.940626][ T2419] 3 locks held by kworker/u8:7/2419:
[ 67.946132][ T2419] #0: ffff888015edd948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[ 67.957177][ T2419] #1: ffffc90009557d00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[ 67.968092][ T2419] #2: ffffffff8f5db750 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0
[ 67.977672][ T2419]
[ 67.977672][ T2419] stack backtrace:
[ 67.984082][ T2419] CPU: 0 PID: 2419 Comm: kworker/u8:7 Not tainted 6.10.0-rc3-syzkaller-00705-g8c379e3ce404 #0
[ 67.994366][ T2419] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
[ 68.004543][ T2419] Workqueue: netns cleanup_net
[ 68.009342][ T2419] Call Trace:
[ 68.012616][ T2419]
[ 68.015569][ T2419] dump_stack_lvl+0x241/0x360
[ 68.020271][ T2419] ? __pfx_dump_stack_lvl+0x10/0x10
[ 68.025498][ T2419] ? __pfx__printk+0x10/0x10
[ 68.030125][ T2419] lockdep_rcu_suspicious+0x221/0x340
[ 68.035506][ T2419] _destroy_all_sets+0x232/0x5f0
[ 68.040477][ T2419] ip_set_net_exit+0x20/0x50
[ 68.045163][ T2419] cleanup_net+0x802/0xcc0
[ 68.049768][ T2419] ? __pfx_cleanup_net+0x10/0x10
[ 68.054721][ T2419] ? process_scheduled_works+0x945/0x1830
[ 68.060465][ T2419] process_scheduled_works+0xa2c/0x1830
[ 68.066333][ T2419] ? __pfx_process_scheduled_works+0x10/0x10
[ 68.072327][ T2419] ? assign_work+0x364/0x3d0
[ 68.076987][ T2419] worker_thread+0x86d/0xd70
[ 68.081651][ T2419] ? __kthread_parkme+0x169/0x1d0
[ 68.086744][ T2419] ? __pfx_worker_thread+0x10/0x10
[ 68.091896][ T2419] kthread+0x2f0/0x390
[ 68.095992][ T2419] ? __pfx_worker_thread+0x10/0x10
[ 68.101148][ T2419] ? __pfx_kthread+0x10/0x10
[ 68.105791][ T2419] ret_from_fork+0x4b/0x80
[ 68.110363][ T2419] ? __pfx_kthread+0x10/0x10
[ 68.114989][ T2419] ret_from_fork_asm+0x1a/0x30
[ 68.119805][ T2419]
[ 68.152948][ T2419]
[ 68.156146][ T2419] =============================
[ 68.161023][ T2419] WARNING: suspicious RCU usage
[ 68.166286][ T2419] 6.10.0-rc3-syzkaller-00705-g8c379e3ce404 #0 Not tainted
[ 68.173459][ T2419] -----------------------------
[ 68.178879][ T2419] net/netfilter/ipset/ip_set_core.c:1211 suspicious rcu_dereference_protected() usage!
[ 68.188844][ T2419]
[ 68.188844][ T2419] other info that might help us debug this:
[ 68.188844][ T2419]
[ 68.199207][ T2419]
[ 68.199207][ T2419] rcu_scheduler_active = 2, debug_locks = 1
[ 68.207368][ T2419] 3 locks held by kworker/u8:7/2419:
[ 68.212780][ T2419] #0: ffff888015edd948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[ 68.224098][ T2419] #1: ffffc90009557d00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[ 68.234748][ T2419] #2: ffffffff8f5db750 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0
[ 68.244431][ T2419]
[ 68.244431][ T2419] stack backtrace:
[ 68.250347][ T2419] CPU: 0 PID: 2419 Comm: kworker/u8:7 Not tainted 6.10.0-rc3-syzkaller-00705-g8c379e3ce404 #0
[ 68.260599][ T2419] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
[ 68.270719][ T2419] Workqueue: netns cleanup_net
[ 68.275521][ T2419] Call Trace:
[ 68.278832][ T2419]
[ 68.281777][ T2419] dump_stack_lvl+0x241/0x360
[ 68.286461][ T2419] ? __pfx_dump_stack_lvl+0x10/0x10
[ 68.291742][ T2419] ? __pfx__printk+0x10/0x10
[ 68.296366][ T2419] lockdep_rcu_suspicious+0x221/0x340
[ 68.301821][ T2419] _destroy_all_sets+0x53f/0x5f0
[ 68.306777][ T2419] ip_set_net_exit+0x20/0x50
[ 68.311472][ T2419] cleanup_net+0x802/0xcc0
[ 68.316016][ T2419] ? __pfx_cleanup_net+0x10/0x10
[ 68.321011][ T2419] ? process_scheduled_works+0x945/0x1830
[ 68.326808][ T2419] process_scheduled_works+0xa2c/0x1830
[ 68.332392][ T2419] ? __pfx_process_scheduled_works+0x10/0x10
[ 68.338410][ T2419] ? assign_work+0x364/0x3d0
[ 68.343011][ T2419] worker_thread+0x86d/0xd70
[ 68.347607][ T2419] ? __kthread_parkme+0x169/0x1d0
[ 68.352624][ T2419] ? __pfx_worker_thread+0x10/0x10
[ 68.357759][ T2419] kthread+0x2f0/0x390
[ 68.361872][ T2419] ? __pfx_worker_thread+0x10/0x10
[ 68.367023][ T2419] ? __pfx_kthread+0x10/0x10
[ 68.371620][ T2419] ret_from_fork+0x4b/0x80
[ 68.376072][ T2419] ? __pfx_kthread+0x10/0x10
[ 68.380710][ T2419] ret_from_fork_asm+0x1a/0x30
[ 68.385497][ T2419]