last executing test programs:
463.002768ms ago: executing program 0:
ioctl(0xffffffffffffffff, 0x0, &(0x7f0000000000))
384.00801ms ago: executing program 1:
getsockopt(0xffffffffffffffff, 0x0, 0x0, &(0x7f0000000000), &(0x7f0000000000))
377.681891ms ago: executing program 2:
setsockopt(0xffffffffffffffff, 0x0, 0x0, &(0x7f0000000000), 0x0)
98.348864ms ago: executing program 0:
sendmsg(0xffffffffffffffff, &(0x7f0000000000), 0x0)
20.049426ms ago: executing program 2:
write(0xffffffffffffffff, &(0x7f0000000000), 0x0)
0s ago: executing program 1:
writev(0xffffffffffffffff, &(0x7f0000000000), 0x0)
kernel console output (not intermixed with test programs):
Warning: Permanently added '10.128.1.135' (ED25519) to the list of known hosts.
2024/06/17 07:25:32 fuzzer started
2024/06/17 07:25:33 dialing manager at 10.128.0.163:30035
syzkaller login: [ 54.955187][ T5089] cgroup: Unknown subsys name 'net'
[ 55.217674][ T5089] cgroup: Unknown subsys name 'rlimit'
[ 56.397310][ T5112] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
2024/06/17 07:25:40 starting 3 executor processes
[ 62.696346][ T2470]
[ 62.698867][ T2470] =============================
[ 62.704162][ T2470] WARNING: suspicious RCU usage
[ 62.709373][ T2470] 6.10.0-rc3-syzkaller-00688-g934c29999b57 #0 Not tainted
[ 62.716512][ T2470] -----------------------------
[ 62.721625][ T2470] net/netfilter/ipset/ip_set_core.c:1200 suspicious rcu_dereference_protected() usage!
[ 62.731645][ T2470]
[ 62.731645][ T2470] other info that might help us debug this:
[ 62.731645][ T2470]
[ 62.742330][ T2470]
[ 62.742330][ T2470] rcu_scheduler_active = 2, debug_locks = 1
[ 62.750943][ T2470] 3 locks held by kworker/u8:9/2470:
[ 62.756253][ T2470] #0: ffff888015edd948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[ 62.767517][ T2470] #1: ffffc900099bfd00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[ 62.778202][ T2470] #2: ffffffff8f5db650 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0
[ 62.788044][ T2470]
[ 62.788044][ T2470] stack backtrace:
[ 62.794179][ T2470] CPU: 1 PID: 2470 Comm: kworker/u8:9 Not tainted 6.10.0-rc3-syzkaller-00688-g934c29999b57 #0
[ 62.804449][ T2470] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
[ 62.814618][ T2470] Workqueue: netns cleanup_net
[ 62.819438][ T2470] Call Trace:
[ 62.822744][ T2470]
[ 62.825844][ T2470] dump_stack_lvl+0x241/0x360
[ 62.830563][ T2470] ? __pfx_dump_stack_lvl+0x10/0x10
[ 62.835802][ T2470] ? __pfx__printk+0x10/0x10
[ 62.840480][ T2470] lockdep_rcu_suspicious+0x221/0x340
2024/06/17 07:25:41 SYZFATAL: failed to recv *flatrpc.HostMessageRaw: EOF
[ 62.845906][ T2470] _destroy_all_sets+0x232/0x5f0
[ 62.851069][ T2470] ip_set_net_exit+0x20/0x50
[ 62.855699][ T2470] cleanup_net+0x802/0xcc0
[ 62.860161][ T2470] ? __pfx_cleanup_net+0x10/0x10
[ 62.865148][ T2470] ? process_scheduled_works+0x945/0x1830
[ 62.870897][ T2470] process_scheduled_works+0xa2c/0x1830
[ 62.876501][ T2470] ? __pfx_process_scheduled_works+0x10/0x10
[ 62.882522][ T2470] ? assign_work+0x364/0x3d0
[ 62.887146][ T2470] worker_thread+0x86d/0xd70
[ 62.891816][ T2470] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 62.897724][ T2470] ? __kthread_parkme+0x169/0x1d0
[ 62.902773][ T2470] ? __pfx_worker_thread+0x10/0x10
[ 62.907893][ T2470] kthread+0x2f0/0x390
[ 62.911996][ T2470] ? __pfx_worker_thread+0x10/0x10
[ 62.917107][ T2470] ? __pfx_kthread+0x10/0x10
[ 62.921696][ T2470] ret_from_fork+0x4b/0x80
[ 62.926199][ T2470] ? __pfx_kthread+0x10/0x10
[ 62.930790][ T2470] ret_from_fork_asm+0x1a/0x30
[ 62.935673][ T2470]
[ 62.939471][ T2470]
[ 62.941832][ T2470] =============================
[ 62.946783][ T2470] WARNING: suspicious RCU usage
[ 62.951941][ T2470] 6.10.0-rc3-syzkaller-00688-g934c29999b57 #0 Not tainted
[ 62.959306][ T2470] -----------------------------
[ 62.964178][ T2470] net/netfilter/ipset/ip_set_core.c:1211 suspicious rcu_dereference_protected() usage!
[ 62.973979][ T2470]
[ 62.973979][ T2470] other info that might help us debug this:
[ 62.973979][ T2470]
[ 62.984390][ T2470]
[ 62.984390][ T2470] rcu_scheduler_active = 2, debug_locks = 1
[ 62.992743][ T2470] 3 locks held by kworker/u8:9/2470:
[ 62.998246][ T2470] #0: ffff888015edd948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830
[ 63.009617][ T2470] #1: ffffc900099bfd00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830
[ 63.020266][ T2470] #2: ffffffff8f5db650 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0
[ 63.030121][ T2470]
[ 63.030121][ T2470] stack backtrace:
[ 63.036468][ T2470] CPU: 0 PID: 2470 Comm: kworker/u8:9 Not tainted 6.10.0-rc3-syzkaller-00688-g934c29999b57 #0
[ 63.046822][ T2470] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
[ 63.057171][ T2470] Workqueue: netns cleanup_net
[ 63.062064][ T2470] Call Trace:
[ 63.065365][ T2470]
[ 63.068305][ T2470] dump_stack_lvl+0x241/0x360
[ 63.073891][ T2470] ? __pfx_dump_stack_lvl+0x10/0x10
[ 63.079115][ T2470] ? __pfx__printk+0x10/0x10
[ 63.083735][ T2470] lockdep_rcu_suspicious+0x221/0x340
[ 63.089126][ T2470] _destroy_all_sets+0x53f/0x5f0
[ 63.094093][ T2470] ip_set_net_exit+0x20/0x50
[ 63.098705][ T2470] cleanup_net+0x802/0xcc0
[ 63.103148][ T2470] ? __pfx_cleanup_net+0x10/0x10
[ 63.108126][ T2470] ? process_scheduled_works+0x945/0x1830
[ 63.113961][ T2470] process_scheduled_works+0xa2c/0x1830
[ 63.119652][ T2470] ? __pfx_process_scheduled_works+0x10/0x10
[ 63.125658][ T2470] ? assign_work+0x364/0x3d0
[ 63.130346][ T2470] worker_thread+0x86d/0xd70
[ 63.135021][ T2470] ? _raw_spin_unlock_irqrestore+0xdd/0x140
[ 63.141000][ T2470] ? __kthread_parkme+0x169/0x1d0
[ 63.146053][ T2470] ? __pf