last executing test programs:
455.470919ms ago: executing program 1:
getsockopt(0xffffffffffffffff, 0x0, 0x0, &(0x7f0000000000), &(0x7f0000000000))
449.78523ms ago: executing program 2:
ioctl(0xffffffffffffffff, 0x0, &(0x7f0000000000))
391.956799ms ago: executing program 0:
epoll_wait(0xffffffffffffffff, &(0x7f0000000000), 0x0, 0x0)
118.907931ms ago: executing program 2:
bind(0xffffffffffffffff, &(0x7f0000000000), 0x0)
27.534436ms ago: executing program 1:
connect(0xffffffffffffffff, &(0x7f0000000000), 0x0)
0s ago: executing program 0:
getpeername(0xffffffffffffffff, &(0x7f0000000000), &(0x7f0000000000))
kernel console output (not intermixed with test programs):
Warning: Permanently added '10.128.10.7' (ED25519) to the list of known hosts.
2024/06/16 16:14:57 fuzzer started
2024/06/16 16:14:57 dialing manager at 10.128.0.163:30035
[ 56.391732][ T5090] cgroup: Unknown subsys name 'net'
[ 56.680920][ T5090] cgroup: Unknown subsys name 'rlimit'
[ 57.819336][ T5091] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
[ 57.835054][ T5091] syz-executor (5091) used greatest stack depth: 19416 bytes left
2024/06/16 16:15:05 starting 3 executor processes
[ 64.880606][ T2787]
[ 64.883205][ T2787] =============================
[ 64.888514][ T2787] WARNING: suspicious RCU usage
[ 64.893372][ T2787] 6.10.0-rc3-syzkaller-00688-g934c29999b57 #0 Not tainted
[ 64.900907][ T2787] -----------------------------
[ 64.905880][ T2787] net/netfilter/ipset/ip_set_core.c:1200 suspicious rcu_dereference_protected() usage!
[ 64.916850][ T2787]
[ 64.916850][ T2787] other info that might help us debug this:
[ 64.916850][ T2787]
[ 64.928367][ T2787]
2024/06/16 16:15:06 SYZFATAL: failed to recv *flatrpc.HostMessageRaw: EOF
[ 64.928367][ T2787] rcu_scheduler_active = 2, debug_locks = 1
[ 64.936887][ T2787] 3 locks held by kworker/u8:6/2787:
[ 64.942899][ T2787] #0: ffff888015edd948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[ 64.954845][ T2787] #1: ffffc90009b6fd00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[ 64.966173][ T2787] #2: ffffffff8f5db650 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0
[ 64.976024][ T2787]
[ 64.976024][ T2787] stack backtrace:
[ 64.982477][ T2787] CPU: 0 PID: 2787 Comm: kworker/u8:6 Not tainted 6.10.0-rc3-syzkaller-00688-g934c29999b57 #0
[ 64.992940][ T2787] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
[ 65.003153][ T2787] Workqueue: netns cleanup_net
[ 65.007943][ T2787] Call Trace:
[ 65.011391][ T2787]
[ 65.014327][ T2787] dump_stack_lvl+0x241/0x360
[ 65.019094][ T2787] ? __pfx_dump_stack_lvl+0x10/0x10
[ 65.024383][ T2787] ? __pfx__printk+0x10/0x10
[ 65.029019][ T2787] lockdep_rcu_suspicious+0x221/0x340
[ 65.034521][ T2787] _destroy_all_sets+0x232/0x5f0
[ 65.039520][ T2787] ip_set_net_exit+0x20/0x50
[ 65.044235][ T2787] cleanup_net+0x802/0xcc0
[ 65.048715][ T2787] ? __pfx_cleanup_net+0x10/0x10
[ 65.054022][ T2787] ? process_scheduled_works+0x945/0x1830
[ 65.059754][ T2787] process_scheduled_works+0xa2c/0x1830
[ 65.065503][ T2787] ? __pfx_process_scheduled_works+0x10/0x10
[ 65.071618][ T2787] ? assign_work+0x364/0x3d0
[ 65.076232][ T2787] worker_thread+0x86d/0xd70
[ 65.080875][ T2787] ? __kthread_parkme+0x169/0x1d0
[ 65.085901][ T2787] ? __pfx_worker_thread+0x10/0x10
[ 65.091182][ T2787] kthread+0x2f0/0x390
[ 65.095249][ T2787] ? __pfx_worker_thread+0x10/0x10
[ 65.100357][ T2787] ? __pfx_kthread+0x10/0x10
[ 65.105025][ T2787] ret_from_fork+0x4b/0x80
[ 65.109544][ T2787] ? __pfx_kthread+0x10/0x10
[ 65.114132][ T2787] ret_from_fork_asm+0x1a/0x30
[ 65.118927][ T2787]
[ 65.158363][ T2787]
[ 65.160859][ T2787] =============================
[ 65.165745][ T2787] WARNING: suspicious RCU usage
[ 65.170859][ T2787] 6.10.0-rc3-syzkaller-00688-g934c29999b57 #0 Not tainted
[ 65.178427][ T2787] -----------------------------
[ 65.183303][ T2787] net/netfilter/ipset/ip_set_core.c:1211 suspicious rcu_dereference_protected() usage!
[ 65.193030][ T2787]
[ 65.193030][ T2787] other info that might help us debug this:
[ 65.193030][ T2787]
[ 65.203637][ T2787]
[ 65.203637][ T2787] rcu_scheduler_active = 2, debug_locks = 1
[ 65.212542][ T2787] 3 locks held by kworker/u8:6/2787:
[ 65.218090][ T2787] #0: ffff888015edd948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[ 65.229341][ T2787] #1: ffffc90009b6fd00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[ 65.240427][ T2787] #2: ffffffff8f5db650 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0
[ 65.252034][ T2787]
[ 65.252034][ T2787] stack backtrace:
[ 65.259274][ T2787] CPU: 0 PID: 2787 Comm: kworker/u8:6 Not tainted 6.10.0-rc3-syzkaller-00688-g934c29999b57 #0
[ 65.270325][ T2787] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
[ 65.280688][ T2787] Workqueue: netns cleanup_net
[ 65.285580][ T2787] Call Trace:
[ 65.288956][ T2787]
[ 65.291882][ T2787] dump_stack_lvl+0x241/0x360
[ 65.296590][ T2787] ? __pfx_dump_stack_lvl+0x10/0x10
[ 65.301794][ T2787] ? __pfx__printk+0x10/0x10
[ 65.306541][ T2787] lockdep_rcu_suspicious+0x221/0x340
[ 65.312185][ T2787] _destroy_all_sets+0x53f/0x5f0
[ 65.317985][ T2787] ip_set_net_exit+0x20/0x50
[ 65.322865][ T2787] cleanup_net+0x802/0xcc0
[ 65.327300][ T2787] ? __pfx_cleanup_net+0x10/0x10
[ 65.332393][ T2787] ? process_scheduled_works+0x945/0x1830
[ 65.338387][ T2787] process_scheduled_works+0xa2c/0x1830
[ 65.344193][ T2787] ? __pfx_process_scheduled_works+0x10/0x10
[ 65.350236][ T2787] ? assign_work+0x364/0x3d0
[ 65.354962][ T2787] worker_thread+0x86d/0xd70
[ 65.359680][ T2787] ? __kthread_parkme+0x169/0x1d0
[ 65.364737][ T2787] ? __pfx_worker_thread+0x10/0x10
[ 65.369882][ T2787] kthread+0x2f0/0x390
[ 65.373966][ T2787] ? __pfx_worker_thread+0x10/0x10
[ 65.379080][ T2787] ? __pfx_kthread+0x10/0x10
[ 65.383836][ T2787] ret_from_fork+0x4b/0x80
[ 65.388386][ T2787] ? __pfx_kthread+0x10/0x10
[ 65.393227][ T2787] ret_from_fork_asm+0x1a/0x30
[ 65.398408][ T2787]