./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor387184588 <...> forked to background, child pid 3176 [ 26.288778][ T3177] 8021q: adding VLAN 0 to HW filter on device bond0 [ 26.298873][ T3177] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: [ 26.686874][ T3270] sshd (3270) used greatest stack depth: 22448 bytes left OK syzkaller Warning: Permanently added '10.128.1.72' (ECDSA) to the list of known hosts. execve("./syz-executor387184588", ["./syz-executor387184588"], 0x7ffdc77860f0 /* 10 vars */) = 0 brk(NULL) = 0x555555d8a000 brk(0x555555d8ac40) = 0x555555d8ac40 arch_prctl(ARCH_SET_FS, 0x555555d8a300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor387184588", 4096) = 27 brk(0x555555dabc40) = 0x555555dabc40 brk(0x555555dac000) = 0x555555dac000 mprotect(0x7fa78549f000, 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_RAW, IPPROTO_PIM) = 3 setsockopt(3, SOL_SOCKET, SO_BINDTODEVICE, "\x62\x6f\x6e\x64\x30\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 16) = 0 syzkaller login: [ 48.946736][ T3597] [ 48.949296][ T3597] ============================= [ 48.954602][ T3597] WARNING: suspicious RCU usage [ 48.959439][ T3597] 5.18.0-rc5-syzkaller-00145-g3cc5c6a7829a #0 Not tainted [ 48.966779][ T3597] ----------------------------- [ 48.971607][ T3597] include/net/bonding.h:353 suspicious rcu_dereference_check() usage! [ 48.980049][ T3597] [ 48.980049][ T3597] other info that might help us debug this: [ 48.980049][ T3597] [ 48.990775][ T3597] [ 48.990775][ T3597] rcu_scheduler_active = 2, debug_locks = 1 [ 48.998940][ T3597] 1 lock held by syz-executor387/3597: [ 49.004437][ T3597] #0: ffff88814711a1b0 (sk_lock-AF_INET){+.+.}-{0:0}, at: sock_setsockopt+0x1e3/0x2d60 [ 49.014318][ T3597] [ 49.014318][ T3597] stack backtrace: [ 49.020206][ T3597] CPU: 0 PID: 3597 Comm: syz-executor387 Not tainted 5.18.0-rc5-syzkaller-00145-g3cc5c6a7829a #0 [ 49.030686][ T3597] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.040728][ T3597] Call Trace: [ 49.043994][ T3597] [ 49.046915][ T3597] dump_stack_lvl+0xcd/0x134 [ 49.051582][ T3597] bond_ethtool_get_ts_info+0x32c/0x3a0 [ 49.057113][ T3597] ? bond_poll_controller+0x440/0x440 [ 49.062471][ T3597] __ethtool_get_ts_info+0x173/0x240 [ 49.067748][ T3597] ethtool_get_phc_vclocks+0x99/0x110 [ 49.073108][ T3597] ? __ethtool_get_ts_info+0x240/0x240 [ 49.078556][ T3597] sock_set_timestamping+0x3a3/0x7e0 [ 49.083830][ T3597] ? sock_set_timestamp+0xc0/0xc0 [ 49.088841][ T3597] ? mark_held_locks+0x9f/0xe0 [ 49.093589][ T3597] ? __local_bh_enable_ip+0xa0/0x120 [ 49.098948][ T3597] sock_setsockopt+0x543/0x2d60 [ 49.103786][ T3597] ? sock_set_timestamping+0x7e0/0x7e0 [ 49.109233][ T3597] ? aa_sk_perm+0x30f/0xaa0 [ 49.113726][ T3597] ? aa_af_perm+0x230/0x230 [ 49.118208][ T3597] ? rwlock_bug.part.0+0x90/0x90 [ 49.123136][ T3597] ? _raw_spin_lock_irq+0x41/0x50 [ 49.128152][ T3597] ? __sys_setsockopt+0x51b/0x6a0 [ 49.133248][ T3597] __sys_setsockopt+0x55e/0x6a0 [ 49.138090][ T3597] ? __ia32_sys_recv+0x100/0x100 [ 49.143011][ T3597] ? lock_downgrade+0x6e0/0x6e0 [ 49.147855][ T3597] ? _raw_spin_unlock_irq+0x1f/0x40 [ 49.153042][ T3597] ? lockdep_hardirqs_on+0x79/0x100 [ 49.158234][ T3597] __x64_sys_setsockopt+0xba/0x150 [ 49.163340][ T3597] do_syscall_64+0x35/0xb0 [ 49.167748][ T3597] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 49.173626][ T3597] RIP: 0033:0x7fa785432b39 [ 49.178022][ T3597] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 49.197610][ T3597] RSP: 002b:00007ffc957bfc48 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 49.206003][ T3597] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa785432b39 [ 49.213967][ T3597] RDX: 0000000000000041 RSI: 0000000000000001 RDI: 0000000000000003 [ 49.221920][ T3597] RBP: 00007fa7853f6ce0 R08: 0000000000000004 R09: 0000000000000000 [ 49.229876][ T3597] R10: 0000000020000000 R11: 0000000000000246 R12: 00007fa7853f6d70 [ 49.237825][ T3597] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 setsockopt(3, SOL_SOCKET, SO_TIMESTAMPING_NEW, [33024], 4) = -1 EINVAL (Invalid argument) exit_group(0) = ? +++ exited with 0 +++ [ 49.245786][ T3597]