./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3170183430 <...> DUID 00:04:ce:8e:a7:1a:d5:92:ad:c3:fd:35:80:c9:2b:13:ab:38 forked to background, child pid 3177 [ 26.268526][ T3178] 8021q: adding VLAN 0 to HW filter on device bond0 [ 26.284341][ T3178] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.80' (ECDSA) to the list of known hosts. execve("./syz-executor3170183430", ["./syz-executor3170183430"], 0x7ffc3511af20 /* 10 vars */) = 0 brk(NULL) = 0x5555568df000 brk(0x5555568dfc40) = 0x5555568dfc40 arch_prctl(ARCH_SET_FS, 0x5555568df300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor3170183430", 4096) = 28 brk(0x555556900c40) = 0x555556900c40 brk(0x555556901000) = 0x555556901000 mprotect(0x7f8902cfb000, 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: [ 49.709202][ T3599] [ 49.711780][ T3599] ============================= [ 49.716606][ T3599] WARNING: suspicious RCU usage [ 49.721509][ T3599] 5.18.0-rc5-syzkaller-01392-g01f4685797a5 #0 Not tainted [ 49.728647][ T3599] ----------------------------- [ 49.733482][ T3599] include/net/bonding.h:353 suspicious rcu_dereference_check() usage! [ 49.742058][ T3599] [ 49.742058][ T3599] other info that might help us debug this: [ 49.742058][ T3599] [ 49.752347][ T3599] [ 49.752347][ T3599] rcu_scheduler_active = 2, debug_locks = 1 [ 49.760456][ T3599] 1 lock held by syz-executor317/3599: [ 49.765895][ T3599] #0: ffff88801de78130 (sk_lock-AF_INET){+.+.}-{0:0}, at: sock_setsockopt+0x1e3/0x2ec0 [ 49.775676][ T3599] [ 49.775676][ T3599] stack backtrace: [ 49.781584][ T3599] CPU: 0 PID: 3599 Comm: syz-executor317 Not tainted 5.18.0-rc5-syzkaller-01392-g01f4685797a5 #0 [ 49.792061][ T3599] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.802094][ T3599] Call Trace: [ 49.805354][ T3599] [ 49.808267][ T3599] dump_stack_lvl+0xcd/0x134 [ 49.812844][ T3599] bond_ethtool_get_ts_info+0x32c/0x3a0 [ 49.818373][ T3599] ? bond_poll_controller+0x440/0x440 [ 49.823727][ T3599] __ethtool_get_ts_info+0x173/0x240 [ 49.828999][ T3599] ethtool_get_phc_vclocks+0x99/0x110 [ 49.834356][ T3599] ? __ethtool_get_ts_info+0x240/0x240 [ 49.839806][ T3599] sock_set_timestamping+0x3a3/0x7e0 [ 49.845079][ T3599] ? sock_set_timestamp+0xc0/0xc0 [ 49.850088][ T3599] ? mark_held_locks+0x9f/0xe0 [ 49.854836][ T3599] ? __local_bh_enable_ip+0xa0/0x120 [ 49.860106][ T3599] sock_setsockopt+0x543/0x2ec0 [ 49.864944][ T3599] ? sock_set_timestamping+0x7e0/0x7e0 [ 49.870392][ T3599] ? aa_sk_perm+0x30f/0xaa0 [ 49.874880][ T3599] ? aa_af_perm+0x230/0x230 [ 49.879368][ T3599] ? rwlock_bug.part.0+0x90/0x90 [ 49.884289][ T3599] ? _raw_spin_lock_irq+0x41/0x50 [ 49.889303][ T3599] ? __sys_setsockopt+0x51b/0x6a0 [ 49.894311][ T3599] __sys_setsockopt+0x55e/0x6a0 [ 49.899144][ T3599] ? __ia32_sys_recv+0x100/0x100 [ 49.904064][ T3599] ? lock_downgrade+0x6e0/0x6e0 [ 49.908904][ T3599] ? _raw_spin_unlock_irq+0x1f/0x40 [ 49.914088][ T3599] ? lockdep_hardirqs_on+0x79/0x100 [ 49.919272][ T3599] __x64_sys_setsockopt+0xba/0x150 [ 49.924367][ T3599] do_syscall_64+0x35/0xb0 [ 49.928772][ T3599] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 49.934665][ T3599] RIP: 0033:0x7f8902c8eb39 [ 49.939062][ T3599] 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 setsockopt(3, SOL_SOCKET, SO_TIMESTAMPING_NEW, [33024], 4) = -1 EINVAL (Invalid argument) exit_group(0) = ? +++ exited with 0 +++ [ 49.958648][ T3599