./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2015138553

<...>
forked to background, child pid 3184
[   26.421188][ T3185] 8021q: adding VLAN 0 to HW filter on device bond0
[   26.432401][ T3185] eql: remember to turn off Van-Jacobson compression on your slave devices
Starting sshd: [   26.765814][ T3277] sshd (3277) used greatest stack depth: 22472 bytes left
OK

syzkaller
Warning: Permanently added '10.128.1.104' (ECDSA) to the list of known hosts.
execve("./syz-executor2015138553", ["./syz-executor2015138553"], 0x7ffd9ddc84b0 /* 10 vars */) = 0
brk(NULL)                               = 0x555556689000
brk(0x555556689c40)                     = 0x555556689c40
arch_prctl(ARCH_SET_FS, 0x555556689300) = 0
uname({sysname="Linux", nodename="syzkaller", ...}) = 0
readlink("/proc/self/exe", "/root/syz-executor2015138553", 4096) = 28
brk(0x5555566aac40)                     = 0x5555566aac40
brk(0x5555566ab000)                     = 0x5555566ab000
mprotect(0x7f81752ea000, 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
bpf(BPF_PROG_LOAD, {prog_type=BPF_PROG_TYPE_SOCKET_FILTER, insn_cnt=3, insns=0x200003c0, license="syzkaller", log_level=1, log_size=195, log_buf="", kern_version=KERNEL_VERSION(0, 0, 0), prog_flags=0, prog_name="", prog_ifindex=0, expected_attach_type=BPF_CGROUP_INET_INGRESS}, 72) = 3
socket(AF_INET, SOCK_DGRAM, IPPROTO_IP) = 4
setsockopt(4, SOL_SOCKET, SO_REUSEPORT, [22459], 4) = 0
setsockopt(4, SOL_SOCKET, SO_ATTACH_REUSEPORT_EBPF, [3], 4) = 0
exit_group(0)                           = ?
syzkaller login: [   49.060220][ T3606] 
[   49.062702][ T3606] =============================
[   49.067534][ T3606] WARNING: suspicious RCU usage
[   49.072461][ T3606] 5.19.0-syzkaller-11980-ge34cfee65ec8 #0 Not tainted
[   49.079226][ T3606] -----------------------------
[   49.084121][ T3606] include/net/sock.h:592 suspicious rcu_dereference_check() usage!
[   49.092043][ T3606] 
[   49.092043][ T3606] other info that might help us debug this:
[   49.092043][ T3606] 
[   49.102319][ T3606] 
[   49.102319][ T3606] rcu_scheduler_active = 2, debug_locks = 1
[   49.110411][ T3606] 3 locks held by syz-executor201/3606:
[   49.116006][ T3606]  #0: ffff8880710a5c10 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: __sock_release+0x86/0x280
[   49.126625][ T3606]  #1: ffffffff8d7bb7b8 (reuseport_lock){+...}-{2:2}, at: reuseport_detach_sock+0x22/0x4a0
[   49.136726][ T3606]  #2: ffff888145bf61f8 (clock-AF_INET){++..}-{2:2}, at: bpf_sk_reuseport_detach+0x26/0x190
[   49.146903][ T3606] 
[   49.146903][ T3606] stack backtrace:
[   49.152832][ T3606] CPU: 1 PID: 3606 Comm: syz-executor201 Not tainted 5.19.0-syzkaller-11980-ge34cfee65ec8 #0
[   49.162990][ T3606] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
[   49.173032][ T3606] Call Trace:
[   49.176302][ T3606]  <TASK>
[   49.179223][ T3606]  dump_stack_lvl+0xcd/0x134
[   49.183810][ T3606]  bpf_sk_reuseport_detach+0x156/0x190
[   49.189262][ T3606]  reuseport_detach_sock+0x8c/0x4a0
[   49.194449][ T3606]  ? netlink_has_listeners+0x21c/0x3d0
[   49.199897][ T3606]  __sk_free+0x130/0x460
[   49.204131][ T3606]  sk_common_release+0x292/0x390
[   49.209059][ T3606]  inet_release+0x12e/0x270
[   49.213556][ T3606]  __sock_release+0xcd/0x280
[   49.218133][ T3606]  sock_close+0x18/0x20
[   49.222361][ T3606]  __fput+0x277/0x9d0
[   49.226333][ T3606]  ? __sock_release+0x280/0x280
[   49.231180][ T3606]  task_work_run+0xdd/0x1a0
[   49.235672][ T3606]  do_exit+0xad5/0x29b0
[   49.239819][ T3606]  ? mm_update_next_owner+0x7a0/0x7a0
[   49.245179][ T3606]  ? _raw_spin_unlock_irq+0x1f/0x40
[   49.250370][ T3606]  ? _raw_spin_unlock_irq+0x1f/0x40
[   49.255559][ T3606]  do_group_exit+0xd2/0x2f0
[   49.260049][ T3606]  __x64_sys_exit_group+0x3a/0x50
[   49.265062][ T3606]  do_syscall_64+0x35/0xb0
[   49.269469][ T3606]  entry_SYSCALL_64_after_hwframe+0x63/0xcd
[   49.275356][ T3606] RIP: 0033:0x7f817527c7f9
[   49.279758][ T3606] Code: Unable to access opcode bytes at RIP 0x7f817527c7cf.
[   49.287107][ T3606] RSP: 002b:00007fffbd2f3058 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   49.295521][ T3606] RAX: ffffffffffffffda RBX: 00007f81752f0270 RCX: 00007f817527c7f9
[   49.303478][ T3606] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000
+++ exited with 0 +++
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