./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1988575485

<...>
Warning: Permanently added '10.128.0.122' (ECDSA) to the list of known hosts.
execve("./syz-executor1988575485", ["./syz-executor1988575485"], 0x7ffee3934f10 /* 10 vars */) = 0
brk(NULL)                               = 0x555555996000
brk(0x555555996c40)                     = 0x555555996c40
arch_prctl(ARCH_SET_FS, 0x555555996300) = 0
uname({sysname="Linux", nodename="syzkaller", ...}) = 0
readlink("/proc/self/exe", "/root/syz-executor1988575485", 4096) = 28
brk(0x5555559b7c40)                     = 0x5555559b7c40
brk(0x5555559b8000)                     = 0x5555559b8000
mprotect(0x7f3667b34000, 16384, PROT_READ) = 0
mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000
mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000
mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000
socket(AF_INET, SOCK_DCCP, IPPROTO_IP)  = 3
setsockopt(3, SOL_SOCKET, SO_REUSEPORT, [-192], 4) = 0
listen(3, 0)                            = 0
exit_group(0)                           = ?
syzkaller login: [   50.236734][ T3609] 
[   50.239175][ T3609] =============================
[   50.244329][ T3609] WARNING: suspicious RCU usage
[   50.249182][ T3609] 5.19.0-syzkaller-05408-g94ce3b64c62d #0 Not tainted
[   50.255975][ T3609] -----------------------------
[   50.260821][ T3609] include/net/sock.h:592 suspicious rcu_dereference_check() usage!
[   50.268752][ T3609] 
[   50.268752][ T3609] other info that might help us debug this:
[   50.268752][ T3609] 
[   50.279011][ T3609] 
[   50.279011][ T3609] rcu_scheduler_active = 2, debug_locks = 1
[   50.287124][ T3609] 5 locks held by syz-executor198/3609:
[   50.292675][ T3609]  #0: ffff888074413e10 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: __sock_release+0x86/0x280
[   50.303273][ T3609]  #1: ffff88814aa48b30 (sk_lock-AF_INET){+.+.}-{0:0}, at: dccp_close+0x7e/0xd50
[   50.312532][ T3609]  #2: ffff8880267f0450 (&h->lhash2[i].lock){+.+.}-{2:2}, at: inet_unhash+0x345/0x680
[   50.322174][ T3609]  #3: ffffffff8d7a9a78 (reuseport_lock){+...}-{2:2}, at: reuseport_detach_sock+0x22/0x4a0
[   50.332265][ T3609]  #4: ffff88814aa48db8 (clock-AF_INET){++..}-{2:2}, at: bpf_sk_reuseport_detach+0x26/0x190
[   50.342423][ T3609] 
[   50.342423][ T3609] stack backtrace:
[   50.348344][ T3609] CPU: 0 PID: 3609 Comm: syz-executor198 Not tainted 5.19.0-syzkaller-05408-g94ce3b64c62d #0
[   50.358485][ T3609] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
[   50.368536][ T3609] Call Trace:
[   50.371804][ T3609]  <TASK>
[   50.374725][ T3609]  dump_stack_lvl+0xcd/0x134
[   50.379308][ T3609]  bpf_sk_reuseport_detach+0x156/0x190
[   50.384760][ T3609]  reuseport_detach_sock+0x8c/0x4a0
[   50.389946][ T3609]  ? rwlock_bug.part.0+0x90/0x90
[   50.394874][ T3609]  reuseport_stop_listen_sock+0x6d/0x500
[   50.400510][ T3609]  inet_unhash+0x3b1/0x680
[   50.404927][ T3609]  dccp_set_state+0x2af/0x3a0
[   50.409613][ T3609]  dccp_close+0xa23/0xd50
[   50.413950][ T3609]  ? dccp_recvmsg+0x9d0/0x9d0
[   50.418627][ T3609]  ? down_write+0xde/0x150
[   50.423031][ T3609]  ? ip_mc_drop_socket+0x16/0x260
[   50.428045][ T3609]  ? locks_remove_file+0x2f7/0x570
[   50.433147][ T3609]  inet_release+0x12e/0x280
[   50.437643][ T3609]  __sock_release+0xcd/0x280
[   50.442230][ T3609]  sock_close+0x18/0x20
[   50.446376][ T3609]  __fput+0x277/0x9d0
[   50.450346][ T3609]  ? __sock_release+0x280/0x280
[   50.455192][ T3609]  task_work_run+0xdd/0x1a0
[   50.459694][ T3609]  do_exit+0xade/0x29d0
[   50.463849][ T3609]  ? mm_update_next_owner+0x7a0/0x7a0
[   50.469229][ T3609]  ? _raw_spin_unlock_irq+0x1f/0x40
[   50.474516][ T3609]  ? _raw_spin_unlock_irq+0x1f/0x40
[   50.479807][ T3609]  do_group_exit+0xd2/0x2f0
[   50.484313][ T3609]  __x64_sys_exit_group+0x3a/0x50
[   50.489334][ T3609]  do_syscall_64+0x35/0xb0
[   50.493750][ T3609]  entry_SYSCALL_64_after_hwframe+0x63/0xcd
[   50.499639][ T3609] RIP: 0033:0x7f3667ac6639
[   50.504052][ T3609] Code: Unable to access opcode bytes at RIP 0x7f3667ac660f.
[   50.511438][ T3609] RSP: 002b:00007ffec86879d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   50.519897][ T3609] RAX: ffffffffffffffda RBX: 00007f3667b3a270 RCX: 00007f3667ac6639
[   50.527872][ T3609] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000
+++ exited with 0 +++
[   50.535846][ T3609] RBP: