last executing test programs:
491.677913ms ago: executing program 2:
getsockopt(0xffffffffffffffff, 0x0, 0x0, &(0x7f0000000000), &(0x7f0000000000))
327.218278ms ago: executing program 1:
sendmsg(0xffffffffffffffff, &(0x7f0000000000), 0x0)
269.565488ms ago: executing program 0:
ioctl(0xffffffffffffffff, 0x0, &(0x7f0000000000))
247.207311ms ago: executing program 2:
recvmsg(0xffffffffffffffff, &(0x7f0000000000), 0x0)
0s ago: executing program 0:
setsockopt(0xffffffffffffffff, 0x0, 0x0, &(0x7f0000000000), 0x0)
kernel console output (not intermixed with test programs):
Warning: Permanently added '10.128.1.142' (ED25519) to the list of known hosts.
2024/06/18 07:06:16 fuzzer started
2024/06/18 07:06:16 dialing manager at 10.128.0.163:30035
[ 58.625831][ T5091] cgroup: Unknown subsys name 'net'
[ 58.946506][ T5091] cgroup: Unknown subsys name 'rlimit'
[ 60.105750][ T5094] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
2024/06/18 07:06:23 starting 3 executor processes
[ 66.071106][ T11]
[ 66.073590][ T11] =============================
[ 66.078988][ T11] WARNING: suspicious RCU usage
[ 66.083868][ T11] 6.10.0-rc3-syzkaller-00700-gefb459303dd5 #0 Not tainted
[ 66.091345][ T11] -----------------------------
[ 66.096316][ T11] net/netfilter/ipset/ip_set_core.c:1200 suspicious rcu_dereference_protected() usage!
[ 66.106443][ T11]
[ 66.106443][ T11] other info that might help us debug this:
[ 66.106443][ T11]
[ 66.116762][ T11]
[ 66.116762][ T11] rcu_scheduler_active = 2, debug_locks = 1
[ 66.125064][ T11] 3 locks held by kworker/u8:0/11:
[ 66.130259][ T11] #0: ffff888015edd948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[ 66.141872][ T11] #1: ffffc90000107d00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[ 66.152607][ T11] #2: ffffffff8f5db650 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0
[ 66.162542][ T11]
[ 66.162542][ T11] stack backtrace:
[ 66.169084][ T11] CPU: 1 PID: 11 Comm: kworker/u8:0 Not tainted 6.10.0-rc3-syzkaller-00700-gefb459303dd5 #0
[ 66.179353][ T11] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
[ 66.189442][ T11] Workqueue: netns cleanup_net
[ 66.194261][ T11] Call Trace:
[ 66.197560][ T11]
[ 66.200510][ T11] dump_stack_lvl+0x241/0x360
[ 66.205225][ T11] ? __pfx_dump_stack_lvl+0x10/0x10
[ 66.210463][ T11] ? __pfx__printk+0x10/0x10
[ 66.215102][ T11] lockdep_rcu_suspicious+0x221/0x340
[ 66.220521][ T11] _destroy_all_sets+0x232/0x5f0
[ 66.225513][ T11] ip_set_net_exit+0x20/0x50
[ 66.230159][ T11] cleanup_net+0x802/0xcc0
[ 66.234633][ T11] ? __pfx_cleanup_net+0x10/0x10
[ 66.239765][ T11] ? process_scheduled_works+0x945/0x1830
[ 66.245509][ T11] process_scheduled_works+0xa2c/0x1830
[ 66.251109][ T11] ? __pfx_process_scheduled_works+0x10/0x10
[ 66.257102][ T11] ? assign_work+0x364/0x3d0
[ 66.261725][ T11] worker_thread+0x86d/0xd70
[ 66.266365][ T11] ? __kthread_parkme+0x169/0x1d0
2024/06/18 07:06:24 SYZFATAL: failed to recv *flatrpc.HostMessageRaw: EOF
[ 66.271484][ T11] ? __pfx_worker_thread+0x10/0x10
[ 66.276610][ T11] kthread+0x2f0/0x390
[ 66.280780][ T11] ? __pfx_worker_thread+0x10/0x10
[ 66.285885][ T11] ? __pfx_kthread+0x10/0x10
[ 66.290501][ T11] ret_from_fork+0x4b/0x80
[ 66.294965][ T11] ? __pfx_kthread+0x10/0x10
[ 66.299575][ T11] ret_from_fork_asm+0x1a/0x30
[ 66.304398][ T11]
[ 66.361838][ T11]
[ 66.364228][ T11] =============================
[ 66.369294][ T11] WARNING: suspicious RCU usage
[ 66.374178][ T11] 6.10.0-rc3-syzkaller-00700-gefb459303dd5 #0 Not tainted
[ 66.381379][ T11] -----------------------------
[ 66.386363][ T11] net/netfilter/ipset/ip_set_core.c:1211 suspicious rcu_dereference_protected() usage!
[ 66.396078][ T11]
[ 66.396078][ T11] other info that might help us debug this:
[ 66.396078][ T11]
[ 66.406496][ T11]
[ 66.406496][ T11] rcu_scheduler_active = 2, debug_locks = 1
[ 66.414594][ T11] 3 locks held by kworker/u8:0/11:
[ 66.419849][ T11] #0: ffff888015edd948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[ 66.430851][ T11] #1: ffffc90000107d00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[ 66.441591][ T11] #2: ffffffff8f5db650 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0
[ 66.451242][ T11]
[ 66.451242][ T11] stack backtrace:
[ 66.457204][ T11] CPU: 0 PID: 11 Comm: kworker/u8:0 Not tainted 6.10.0-rc3-syzkaller-00700-gefb459303dd5 #0
[ 66.467292][ T11] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
[ 66.477367][ T11] Workqueue: netns cleanup_net
[ 66.482163][ T11] Call Trace:
[ 66.485470][ T11]
[ 66.488413][ T11] dump_stack_lvl+0x241/0x360
[ 66.493114][ T11] ? __pfx_dump_stack_lvl+0x10/0x10
[ 66.498326][ T11] ? __pfx__printk+0x10/0x10
[ 66.503036][ T11] lockdep_rcu_suspicious+0x221/0x340
[ 66.508435][ T11] _destroy_all_sets+0x53f/0x5f0
[ 66.513482][ T11] ip_set_net_exit+0x20/0x50
[ 66.518264][ T11] cleanup_net+0x802/0xcc0
[ 66.522822][ T11] ? __pfx_cleanup_net+0x10/0x10
[ 66.527889][ T11] ? process_scheduled_works+0x945/0x1830
[ 66.533638][ T11] process_scheduled_works+0xa2c/0x1830
[ 66.539245][ T11] ? __pfx_process_scheduled_works+0x10/0x10
[ 66.545502][ T11] ? assign_work+0x364/0x3d0
[ 66.550226][ T11] worker_thread+0x86d/0xd70
[ 66.554869][ T11] ? __kthread_parkme+0x169/0x1d0
[ 66.559994][ T11] ? __pfx_worker_thread+0x10/0x10
[ 66.565254][ T11] kthread+0x2f0/0x390
[ 66.569423][ T11] ? __pfx_worker_thread+0x10/0x10
[ 66.574548][ T11] ? __pfx_kthread+0x10/0x10
[ 66.579688][ T11] ret_from_fork+0x4b/0x80
[ 66.584392][ T11] ? __pfx_kthread+0x10/0x10
[ 66.589320][ T11] ret_from_fork_asm+0x1a/0x30
[ 66.594358][ T11]