last executing test programs: 935.746323ms ago: executing program 3: socket$inet_dccp(0x2, 0x6, 0x0) 903.027944ms ago: executing program 0: socket$pptp(0x18, 0x1, 0x2) 895.114242ms ago: executing program 4: socket$inet_smc(0x2b, 0x1, 0x0) 889.08454ms ago: executing program 3: socket$igmp6(0xa, 0x3, 0x2) 874.8251ms ago: executing program 1: socket$phonet_pipe(0x23, 0x5, 0x2) 865.865685ms ago: executing program 3: socket$inet6_udplite(0xa, 0x2, 0x88) 843.974212ms ago: executing program 0: socket$inet6_tcp(0xa, 0x1, 0x0) 843.400925ms ago: executing program 4: socket$vsock_stream(0x28, 0x1, 0x0) 834.896704ms ago: executing program 1: epoll_pwait(0xffffffffffffffff, &(0x7f0000000000), 0x0, 0x0, &(0x7f0000000000), 0x0) 818.909679ms ago: executing program 1: syz_init_net_socket$ax25(0x3, 0x2, 0x0) 812.730087ms ago: executing program 4: syz_init_net_socket$bt_l2cap(0x1f, 0x1, 0x0) 797.979612ms ago: executing program 2: syz_init_net_socket$rose(0xb, 0x5, 0x0) 794.000453ms ago: executing program 0: socket$nl_rdma(0x10, 0x3, 0x14) 780.894017ms ago: executing program 1: socket$key(0xf, 0x3, 0x2) 779.891644ms ago: executing program 4: socket$tipc(0x1e, 0x2, 0x0) 768.544545ms ago: executing program 0: socket$packet(0x11, 0x2, 0x300) 766.8106ms ago: executing program 3: openat(0xffffffffffffff9c, &(0x7f0000000040)='/dev/ppp', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000080)='/dev/ppp', 0x1, 0x0) openat(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/ppp', 0x2, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000100)='/dev/ppp', 0x800, 0x0) 760.316384ms ago: executing program 2: socket$nl_sock_diag(0x10, 0x3, 0x4) 748.155436ms ago: executing program 3: poll(&(0x7f0000000000), 0x0, 0x0) 743.245327ms ago: executing program 1: socket$isdn(0x22, 0x3, 0x0) 739.084745ms ago: executing program 4: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) 725.14325ms ago: executing program 0: openat(0xffffffffffffff9c, &(0x7f0000000040)='/proc/cmdline', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000080)='/proc/cmdline', 0x1, 0x0) openat(0xffffffffffffff9c, &(0x7f00000000c0)='/proc/cmdline', 0x2, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000100)='/proc/cmdline', 0x800, 0x0) 715.415793ms ago: executing program 2: socket$l2tp(0x2, 0x2, 0x73) 713.454363ms ago: executing program 3: syz_init_net_socket$nfc_raw(0x27, 0x3, 0x0) 710.93311ms ago: executing program 4: socket$inet6_icmp_raw(0xa, 0x3, 0x3a) 704.799344ms ago: executing program 1: syz_init_net_socket$netrom(0x6, 0x5, 0x0) 691.694427ms ago: executing program 0: socket$nl_xfrm(0x10, 0x3, 0x6) 688.943025ms ago: executing program 2: socket$caif_seqpacket(0x25, 0x5, 0x0) 627.861001ms ago: executing program 2: socket$nl_route(0x10, 0x3, 0x0) 0s ago: executing program 2: mmap(&(0x7efffffff000/0x1000)=nil, 0x1000, 0x0, 0x32, 0xffffffffffffffff, 0x0) mmap(&(0x7f0000000000/0x1000000)=nil, 0x1000000, 0x7, 0x32, 0xffffffffffffffff, 0x0) mmap(&(0x7f0001000000/0x1000)=nil, 0x1000, 0x0, 0x32, 0xffffffffffffffff, 0x0) kernel console output (not intermixed with test programs): Warning: Permanently added '10.128.1.189' (ED25519) to the list of known hosts. 2024/06/20 18:27:16 fuzzer started 2024/06/20 18:27:16 dialing manager at 10.128.0.169:30019 [ 55.978948][ T5094] cgroup: Unknown subsys name 'net' [ 56.207045][ T5094] cgroup: Unknown subsys name 'rlimit' 2024/06/20 18:27:18 starting 5 executor processes [ 57.392156][ T5112] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 57.783934][ T5134] UDPLite: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list [ 58.651152][ T5243] UDPLite6: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list [ 59.550041][ T989] [ 59.552565][ T989] ============================= [ 59.557435][ T989] WARNING: suspicious RCU usage [ 59.562467][ T989] 6.10.0-rc3-syzkaller-00755-ga012f9a752a5 #0 Not tainted [ 59.569985][ T989] ----------------------------- [ 59.575016][ T989] net/netfilter/ipset/ip_set_core.c:1200 suspicious rcu_dereference_protected() usage! [ 59.584799][ T989] [ 59.584799][ T989] other info that might help us debug this: [ 59.584799][ T989] [ 59.595199][ T989] 2024/06/20 18:27:20 SYZFATAL: failed to recv *flatrpc.HostMessageRaw: EOF [ 59.595199][ T989] rcu_scheduler_active = 2, debug_locks = 1 [ 59.603786][ T989] 3 locks held by kworker/u8:5/989: [ 59.609061][ T989] #0: ffff888015edd948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 [ 59.620497][ T989] #1: ffffc90004667d00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 [ 59.631849][ T989] #2: ffffffff8f5da110 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 [ 59.641733][ T989] [ 59.641733][ T989] stack backtrace: [ 59.647744][ T989] CPU: 1 PID: 989 Comm: kworker/u8:5 Not tainted 6.10.0-rc3-syzkaller-00755-ga012f9a752a5 #0 [ 59.657922][ T989] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 [ 59.668020][ T989] Workqueue: netns cleanup_net [ 59.672823][ T989] Call Trace: [ 59.676102][ T989] [ 59.679028][ T989] dump_stack_lvl+0x241/0x360 [ 59.683798][ T989] ? __pfx_dump_stack_lvl+0x10/0x10 [ 59.689077][ T989] ? __pfx__printk+0x10/0x10 [ 59.693755][ T989] lockdep_rcu_suspicious+0x221/0x340 [ 59.699129][ T989] _destroy_all_sets+0x232/0x5f0 [ 59.704104][ T989] ip_set_net_exit+0x20/0x50 [ 59.708883][ T989] cleanup_net+0x802/0xcc0 [ 59.713358][ T989] ? __pfx_cleanup_net+0x10/0x10 [ 59.718321][ T989] ? process_scheduled_works+0x945/0x1830 [ 59.724123][ T989] process_scheduled_works+0xa2c/0x1830 [ 59.729775][ T989] ? __pfx_process_scheduled_works+0x10/0x10 [ 59.735841][ T989] ? assign_work+0x364/0x3d0 [ 59.740533][ T989] worker_thread+0x86d/0xd70 [ 59.745123][ T989] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 59.751229][ T989] ? __kthread_parkme+0x169/0x1d0 [ 59.756344][ T989] ? __pfx_worker_thread+0x10/0x10 [ 59.761485][ T989] kthread+0x2f0/0x390 [ 59.765676][ T989] ? __pfx_worker_thread+0x10/0x10 [ 59.770896][ T989] ? __pfx_kthread+0x10/0x10 [ 59.775585][ T989] ret_from_fork+0x4b/0x80 [ 59.780020][ T989] ? __pfx_kthread+0x10/0x10 [ 59.784608][ T989] ret_from_fork_asm+0x1a/0x30 [ 59.789383][ T989]