last executing test programs:
457.296692ms ago: executing program 1:
write(0xffffffffffffffff, &(0x7f0000000000), 0x0)
331.919817ms ago: executing program 2:
setsockopt(0xffffffffffffffff, 0x0, 0x0, &(0x7f0000000000), 0x0)
244.839769ms ago: executing program 0:
ioctl(0xffffffffffffffff, 0x0, &(0x7f0000000000))
204.666684ms ago: executing program 1:
bpf$BPF_BTF_GET_FD_BY_ID(0x13, &(0x7f0000000000), 0x0)
0s ago: executing program 2:
sendmsg(0xffffffffffffffff, &(0x7f0000000000), 0x0)
kernel console output (not intermixed with test programs):
Warning: Permanently added '10.128.1.224' (ED25519) to the list of known hosts.
2024/06/16 21:52:40 fuzzer started
2024/06/16 21:52:40 dialing manager at 10.128.0.163:30035
syzkaller login: [ 56.367398][ T5089] cgroup: Unknown subsys name 'net'
[ 56.605315][ T5089] cgroup: Unknown subsys name 'rlimit'
[ 57.777796][ T5091] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
2024/06/16 21:52:48 starting 3 executor processes
[ 64.895283][ T12]
[ 64.897840][ T12] =============================
[ 64.903414][ T12] WARNING: suspicious RCU usage
[ 64.908311][ T12] 6.10.0-rc3-syzkaller-00688-g934c29999b57 #0 Not tainted
[ 64.915531][ T12] -----------------------------
[ 64.920418][ T12] net/netfilter/ipset/ip_set_core.c:1200 suspicious rcu_dereference_protected() usage!
[ 64.930208][ T12]
[ 64.930208][ T12] other info that might help us debug this:
[ 64.930208][ T12]
[ 64.940708][ T12]
2024/06/16 21:52:49 SYZFATAL: failed to recv *flatrpc.HostMessageRaw: EOF
[ 64.940708][ T12] rcu_scheduler_active = 2, debug_locks = 1
[ 64.948949][ T12] 3 locks held by kworker/u8:1/12:
[ 64.954366][ T12] #0: ffff888015edd948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[ 64.965413][ T12] #1: ffffc90000117d00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[ 64.976213][ T12] #2: ffffffff8f5db650 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0
[ 64.986044][ T12]
[ 64.986044][ T12] stack backtrace:
[ 64.991964][ T12] CPU: 0 PID: 12 Comm: kworker/u8:1 Not tainted 6.10.0-rc3-syzkaller-00688-g934c29999b57 #0
[ 65.002054][ T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
[ 65.012198][ T12] Workqueue: netns cleanup_net
[ 65.017105][ T12] Call Trace:
[ 65.020387][ T12]
[ 65.023345][ T12] dump_stack_lvl+0x241/0x360
[ 65.028024][ T12] ? __pfx_dump_stack_lvl+0x10/0x10
[ 65.033216][ T12] ? __pfx__printk+0x10/0x10
[ 65.037817][ T12] lockdep_rcu_suspicious+0x221/0x340
[ 65.043193][ T12] _destroy_all_sets+0x232/0x5f0
[ 65.048130][ T12] ip_set_net_exit+0x20/0x50
[ 65.052719][ T12] cleanup_net+0x802/0xcc0
[ 65.057140][ T12] ? __pfx_cleanup_net+0x10/0x10
[ 65.062080][ T12] ? process_scheduled_works+0x945/0x1830
[ 65.067791][ T12] process_scheduled_works+0xa2c/0x1830
[ 65.073432][ T12] ? __pfx_process_scheduled_works+0x10/0x10
[ 65.079492][ T12] ? assign_work+0x364/0x3d0
[ 65.084249][ T12] worker_thread+0x86d/0xd70
[ 65.088841][ T12] ? __kthread_parkme+0x169/0x1d0
[ 65.093859][ T12] ? __pfx_worker_thread+0x10/0x10
[ 65.098958][ T12] kthread+0x2f0/0x390
[ 65.103017][ T12] ? __pfx_worker_thread+0x10/0x10
[ 65.108116][ T12] ? __pfx_kthread+0x10/0x10
[ 65.112782][ T12] ret_from_fork+0x4b/0x80
[ 65.117201][ T12] ? __pfx_kthread+0x10/0x10
[ 65.121866][ T12] ret_from_fork_asm+0x1a/0x30
[ 65.126840][ T12]
[ 65.149712][ T12]
[ 65.152206][ T12] =============================
[ 65.157295][ T12] WARNING: suspicious RCU usage
[ 65.162539][ T12] 6.10.0-rc3-syzkaller-00688-g934c29999b57 #0 Not tainted
[ 65.169677][ T12] -----------------------------
[ 65.174896][ T12] net/netfilter/ipset/ip_set_core.c:1211 suspicious rcu_dereference_protected() usage!
[ 65.184648][ T12]
[ 65.184648][ T12] other info that might help us debug this:
[ 65.184648][ T12]
[ 65.195077][ T12]
[ 65.195077][ T12] rcu_scheduler_active = 2, debug_locks = 1
[ 65.203338][ T12] 3 locks held by kworker/u8:1/12:
[ 65.208542][ T12] #0: ffff888015edd948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[ 65.219588][ T12] #1: ffffc90000117d00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[ 65.230354][ T12] #2: ffffffff8f5db650 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0
[ 65.240374][ T12]
[ 65.240374][ T12] stack backtrace:
[ 65.246553][ T12] CPU: 0 PID: 12 Comm: kworker/u8:1 Not tainted 6.10.0-rc3-syzkaller-00688-g934c29999b57 #0
[ 65.256930][ T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
[ 65.267126][ T12] Workqueue: netns cleanup_net
[ 65.271925][ T12] Call Trace:
[ 65.275320][ T12]
[ 65.278437][ T12] dump_stack_lvl+0x241/0x360
[ 65.283339][ T12] ? __pfx_dump_stack_lvl+0x10/0x10
[ 65.288587][ T12] ? __pfx__printk+0x10/0x10
[ 65.293227][ T12] lockdep_rcu_suspicious+0x221/0x340
[ 65.298631][ T12] _destroy_all_sets+0x53f/0x5f0
[ 65.303608][ T12] ip_set_net_exit+0x20/0x50
[ 65.308235][ T12] cleanup_net+0x802/0xcc0
[ 65.312706][ T12] ? __pfx_cleanup_net+0x10/0x10
[ 65.317775][ T12] ? process_scheduled_works+0x945/0x1830
[ 65.323522][ T12] process_scheduled_works+0xa2c/0x1830
[ 65.329211][ T12] ? __pfx_process_scheduled_works+0x10/0x10
[ 65.335317][ T12] ? assign_work+0x364/0x3d0
[ 65.339914][ T12] worker_thread+0x86d/0xd70
[ 65.344540][ T12] ? __kthread_parkme+0x169/0x1d0
[ 65.349575]