last executing test programs: 199.824446ms ago: executing program 0: syz_init_net_socket$nfc_raw(0x27, 0x3, 0x0) 198.645252ms ago: executing program 2: syz_init_net_socket$802154_raw(0x24, 0x3, 0x0) 196.407729ms ago: executing program 3: socket$inet_smc(0x2b, 0x1, 0x0) 177.129438ms ago: executing program 4: socket$inet_sctp(0x2, 0x1, 0x84) 174.456591ms ago: executing program 1: socket$can_bcm(0x1d, 0x2, 0x2) 173.982102ms ago: executing program 0: socket$inet_mptcp(0x2, 0x1, 0x106) 161.014838ms ago: executing program 3: pwritev(0xffffffffffffffff, &(0x7f0000000000), 0x0, 0x0, 0x0) 160.217534ms ago: executing program 2: socket$inet6_udp(0xa, 0x2, 0x0) 145.718061ms ago: executing program 1: pwrite64(0xffffffffffffffff, &(0x7f0000000000), 0x0, 0x0) 142.439144ms ago: executing program 0: socket$nl_xfrm(0x10, 0x3, 0x6) 137.140705ms ago: executing program 4: socket$inet6(0xa, 0x1, 0x0) 134.515728ms ago: executing program 3: sendfile(0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0x0) 129.47039ms ago: executing program 2: socket$igmp(0x2, 0x3, 0x2) 108.360813ms ago: executing program 1: syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) 103.473353ms ago: executing program 4: socket(0x1e, 0x2, 0x0) 101.834713ms ago: executing program 0: clock_gettime(0x0, &(0x7f0000000000)) 101.341564ms ago: executing program 3: socket$inet6_icmp_raw(0xa, 0x3, 0x3a) 96.459268ms ago: executing program 2: socket$nl_generic(0x10, 0x3, 0x10) 72.105ms ago: executing program 0: socket$igmp6(0xa, 0x3, 0x2) 71.314546ms ago: executing program 1: pread64(0xffffffffffffffff, &(0x7f0000000000), 0x0, 0x0) 70.908757ms ago: executing program 4: epoll_create1(0x0) 69.695003ms ago: executing program 3: socket$pptp(0x18, 0x1, 0x2) 54.144271ms ago: executing program 2: socket$xdp(0x2c, 0x3, 0x0) 42.534655ms ago: executing program 4: socket$nl_rdma(0x10, 0x3, 0x14) 39.53074ms ago: executing program 0: syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1) 36.157345ms ago: executing program 2: openat(0xffffffffffffff9c, &(0x7f0000000040)='/dev/ppp', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000080)='/dev/ppp', 0x1, 0x0) openat(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/ppp', 0x2, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000100)='/dev/ppp', 0x800, 0x0) 26.424569ms ago: executing program 1: pselect6(0x0, &(0x7f0000000000), &(0x7f0000000000), &(0x7f0000000000), &(0x7f0000000000), &(0x7f0000000000)) 23.749477ms ago: executing program 3: getuid() 8.52295ms ago: executing program 4: socket$key(0xf, 0x3, 0x2) 0s ago: executing program 1: socket$unix(0x1, 0x1, 0x0) kernel console output (not intermixed with test programs): Warning: Permanently added '10.128.0.142' (ED25519) to the list of known hosts. 2024/06/18 07:04:53 fuzzer started 2024/06/18 07:04:53 dialing manager at 10.128.0.169:30019 [ 59.653951][ T5087] cgroup: Unknown subsys name 'net' [ 60.005392][ T5087] cgroup: Unknown subsys name 'rlimit' 2024/06/18 07:04:55 starting 5 executor processes [ 61.097151][ T5095] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 61.110975][ T5095] syz-executor (5095) used greatest stack depth: 18672 bytes left [ 62.121607][ T5197] UDPLite: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list [ 62.342404][ T5229] UDPLite6: UDP-Lite is deprecated and scheduled to be removed in 2025, please contact the netdev mailing list [ 63.370842][ T12] [ 63.373544][ T12] ============================= [ 63.378679][ T12] WARNING: suspicious RCU usage [ 63.384267][ T12] 6.10.0-rc3-syzkaller-00699-g0d9bb144276e #0 Not tainted [ 63.391897][ T12] ----------------------------- [ 63.396876][ T12] net/netfilter/ipset/ip_set_core.c:1200 suspicious rcu_dereference_protected() usage! [ 63.407135][ T12] [ 63.407135][ T12] other info that might help us debug this: [ 63.407135][ T12] [ 63.417547][ T12] 2024/06/18 07:04:57 SYZFATAL: failed to recv *flatrpc.HostMessageRaw: EOF [ 63.417547][ T12] rcu_scheduler_active = 2, debug_locks = 1 [ 63.425841][ T12] 3 locks held by kworker/u8:1/12: [ 63.431592][ T12] #0: ffff888015edd948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 [ 63.442800][ T12] #1: ffffc90000117d00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 [ 63.454316][ T12] #2: ffffffff8f5db650 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 [ 63.463985][ T12] [ 63.463985][ T12] stack backtrace: [ 63.470225][ T12] CPU: 0 PID: 12 Comm: kworker/u8:1 Not tainted 6.10.0-rc3-syzkaller-00699-g0d9bb144276e #0 [ 63.480397][ T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 [ 63.490730][ T12] Workqueue: netns cleanup_net [ 63.495907][ T12] Call Trace: [ 63.499296][ T12] [ 63.502338][ T12] dump_stack_lvl+0x241/0x360 [ 63.507051][ T12] ? __pfx_dump_stack_lvl+0x10/0x10 [ 63.512545][ T12] ? __pfx__printk+0x10/0x10 [ 63.517263][ T12] lockdep_rcu_suspicious+0x221/0x340 [ 63.523106][ T12] _destroy_all_sets+0x232/0x5f0 [ 63.528268][ T12] ip_set_net_exit+0x20/0x50 [ 63.533335][ T12] cleanup_net+0x802/0xcc0 [ 63.537967][ T12] ? __pfx_cleanup_net+0x10/0x10 [ 63.543122][ T12] ? process_scheduled_works+0x945/0x1830 [ 63.549148][ T12] process_scheduled_works+0xa2c/0x1830 [ 63.554764][ T12] ? __pfx_process_scheduled_works+0x10/0x10 [ 63.561326][ T12] ? assign_work+0x364/0x3d0 [ 63.565943][ T12] worker_thread+0x86d/0xd70 [ 63.570666][ T12] ? __kthread_parkme+0x169/0x1d0 [ 63.575811][ T12] ? __pfx_worker_thread+0x10/0x10 [ 63.580946][ T12] kthread+0x2f0/0x390 [ 63.585119][ T12] ? __pfx_worker_thread+0x10/0x10 [ 63.590321][ T12] ? __pfx_kthread+0x10/0x10 [ 63.594903][ T12] ret_from_fork+0x4b/0x80 [ 63.599576][ T12] ? __pfx_kthread+0x10/0x10 [ 63.604838][ T12] ret_from_fork_asm+0x1a/0x30 [ 63.609615][ T12] [ 63.641331][ T185] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 63.649645][ T185] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 63.793930][ T12] [ 63.796343][ T12] ============================= [ 63.801661][ T12] WARNING: suspicious RCU usage [ 63.806537][ T12] 6.10.0-rc3-syzkaller-00699-g0d9bb144276e #0 Not tainted [ 63.813953][ T12] ----------------------------- [ 63.818817][ T12] net/netfilter/ipset/ip_set_core.c:1211 suspicious rcu_dereference_protected() usage! [ 63.828755][ T12] [ 63.828755][ T12] other info that might help us debug this: [ 63.828755][ T12] [ 63.839354][ T12] [ 63.839354][ T12] rcu_sch