last executing test programs: 881.548488ms ago: executing program 4: getsockopt(0xffffffffffffffff, 0x0, 0x0, &(0x7f0000000000), &(0x7f0000000000)) 839.015792ms ago: executing program 4: openat(0xffffffffffffff9c, &(0x7f0000000040)='/dev/dlm-monitor', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000080)='/dev/dlm-monitor', 0x1, 0x0) openat(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/dlm-monitor', 0x2, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000100)='/dev/dlm-monitor', 0x800, 0x0) 779.272061ms ago: executing program 4: fcntl$F_GET_FILE_RW_HINT(0xffffffffffffffff, 0x40d, &(0x7f0000000000)) 512.034981ms ago: executing program 0: time(&(0x7f0000000000)) 485.128168ms ago: executing program 0: execveat(0xffffffffffffffff, &(0x7f0000000000), &(0x7f0000000000), &(0x7f0000000000), 0x0) 455.493535ms ago: executing program 0: openat(0xffffffffffffff9c, &(0x7f0000000040)='/selinux/validatetrans', 0x1, 0x0) 437.913248ms ago: executing program 0: rseq(&(0x7f0000000000), 0x0, 0x0, 0x0) 414.064575ms ago: executing program 0: mq_open(&(0x7f0000000000), 0x0, 0x0, &(0x7f0000000000)) 403.714662ms ago: executing program 0: pause() 292.696644ms ago: executing program 3: socket$hf(0x13, 0x2, 0x0) 204.335852ms ago: executing program 3: preadv2(0xffffffffffffffff, &(0x7f0000000000), 0x0, 0x0, 0x0, 0x0) 199.648664ms ago: executing program 4: openat(0xffffffffffffff9c, &(0x7f0000000040)='/dev/raw-gadget', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000080)='/dev/raw-gadget', 0x1, 0x0) openat(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/raw-gadget', 0x2, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000100)='/dev/raw-gadget', 0x800, 0x0) 198.913277ms ago: executing program 2: llistxattr(&(0x7f0000000000), &(0x7f0000000000), 0x0) 189.475749ms ago: executing program 2: openat(0xffffffffffffff9c, &(0x7f0000000040)='/dev/autofs', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000080)='/dev/autofs', 0x1, 0x0) openat(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/autofs', 0x2, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000100)='/dev/autofs', 0x800, 0x0) 180.825605ms ago: executing program 3: openat(0xffffffffffffff9c, &(0x7f0000000040)='/dev/md0', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000080)='/dev/md0', 0x1, 0x0) openat(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/md0', 0x2, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000100)='/dev/md0', 0x800, 0x0) 161.02106ms ago: executing program 2: openat(0xffffffffffffff9c, &(0x7f0000000040)='/dev/video37', 0x2, 0x0) 151.153476ms ago: executing program 3: socket$nl_xfrm(0x10, 0x3, 0x6) 117.429395ms ago: executing program 3: rt_sigaction(0x0, &(0x7f0000000000), 0x0, 0x0, &(0x7f0000000000)) 110.340756ms ago: executing program 1: execve(&(0x7f0000000000), &(0x7f0000000000), &(0x7f0000000000)) 103.715674ms ago: executing program 2: getgroups(0x0, &(0x7f0000000000)) 82.053375ms ago: executing program 1: pkey_mprotect(0x0, 0x0, 0x0, 0xffffffffffffffff) 65.107938ms ago: executing program 3: openat(0xffffffffffffff9c, &(0x7f0000000040)='/dev/ocfs2_control', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000080)='/dev/ocfs2_control', 0x1, 0x0) openat(0xffffffffffffff9c, &(0x7f00000000c0)='/dev/ocfs2_control', 0x2, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000100)='/dev/ocfs2_control', 0x800, 0x0) 63.215912ms ago: executing program 1: close(0xffffffffffffffff) 60.662384ms ago: executing program 2: openat(0xffffffffffffff9c, &(0x7f0000000040)='/sys/kernel/debug/bluetooth/6lowpan_control', 0x2, 0x0) 43.424271ms ago: executing program 1: io_setup(0x0, &(0x7f0000000000)) 29.293941ms ago: executing program 1: open(&(0x7f0000000000), 0x0, 0x0) 11.575447ms ago: executing program 2: lookup_dcookie(0x0, &(0x7f0000000000), 0x0) 0s ago: executing program 1: recvfrom(0xffffffffffffffff, &(0x7f0000000000), 0x0, 0x0, 0x0, 0x0) kernel console output (not intermixed with test programs): Warning: Permanently added '10.128.0.252' (ED25519) to the list of known hosts. 2024/06/14 07:35:38 fuzzer started 2024/06/14 07:35:38 dialing manager at 10.128.0.169:30001 [ 59.391670][ T5093] cgroup: Unknown subsys name 'net' [ 59.654823][ T5093] cgroup: Unknown subsys name 'rlimit' 2024/06/14 07:35:40 starting 5 executor processes [ 60.749129][ T5102] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 61.962721][ T5228] mmap: syz-executor.1 (5228) uses deprecated remap_file_pages() syscall. See Documentation/mm/remap_file_pages.rst. [ 62.159250][ T2892] [ 62.162157][ T2892] ============================= [ 62.167492][ T2892] WARNING: suspicious RCU usage [ 62.172384][ T2892] 6.10.0-rc3-syzkaller-00099-gd20f6b3d747c #0 Not tainted [ 62.179832][ T2892] ----------------------------- [ 62.184711][ T2892] net/netfilter/ipset/ip_set_core.c:1200 suspicious rcu_dereference_protected() usage! [ 62.195443][ T2892] [ 62.195443][ T2892] other info that might help us debug this: [ 62.195443][ T2892] [ 62.206184][ T2892] 2024/06/14 07:35:41 SYZFATAL: failed to recv *flatrpc.HostMessageRaw: EOF [ 62.206184][ T2892] rcu_scheduler_active = 2, debug_locks = 1 [ 62.215311][ T2892] 3 locks held by kworker/u8:13/2892: [ 62.221578][ T2892] #0: ffff888015ed5948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 [ 62.232863][ T2892] #1: ffffc90009bcfd00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 [ 62.243766][ T2892] #2: ffffffff8f5db250 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 [ 62.253603][ T2892] [ 62.253603][ T2892] stack backtrace: [ 62.260915][ T2892] CPU: 1 PID: 2892 Comm: kworker/u8:13 Not tainted 6.10.0-rc3-syzkaller-00099-gd20f6b3d747c #0 [ 62.271366][ T2892] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 [ 62.281511][ T2892] Workqueue: netns cleanup_net [ 62.286316][ T2892] Call Trace: [ 62.289601][ T2892] [ 62.292589][ T2892] dump_stack_lvl+0x241/0x360 [ 62.297290][ T2892] ? __pfx_dump_stack_lvl+0x10/0x10 [ 62.302850][ T2892] ? __pfx__printk+0x10/0x10 [ 62.307458][ T2892] lockdep_rcu_suspicious+0x221/0x340 [ 62.312855][ T2892] _destroy_all_sets+0x232/0x5f0 [ 62.317828][ T2892] ip_set_net_exit+0x20/0x50 [ 62.322461][ T2892] cleanup_net+0x802/0xcc0 [ 62.326996][ T2892] ? __pfx_cleanup_net+0x10/0x10 [ 62.332041][ T2892] ? process_scheduled_works+0x945/0x1830 [ 62.337952][ T2892] process_scheduled_works+0xa2c/0x1830 [ 62.343551][ T2892] ? __pfx_process_scheduled_works+0x10/0x10 [ 62.349726][ T2892] ? assign_work+0x364/0x3d0 [ 62.354316][ T2892] worker_thread+0x86d/0xd70 [ 62.358910][ T2892] ? _raw_spin_unlock_irqrestore+0xdd/0x140 [ 62.364808][ T2892] ? __kthread_parkme+0x169/0x1d0 [ 62.369834][ T2892] ? __pfx_worker_thread+0x10/0x10 [ 62.374955][ T2892] kthread+0x2f0/0x390 [ 62.379047][ T2892] ? __pfx_worker_thread+0x10/0x10 [ 62.384147][ T2892] ? __pfx_kthread+0x10/0x10 [ 62.388739][ T2892] ret_from_fork+0x4b/0x80 [ 62.393420][ T2892] ? __pfx_kthread+0x10/0x10 [ 62.398466][ T2892] ret_from_fork_asm+0x1a/0x30 [ 62.403254][ T2892]