./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1279608213 <...> DUID 00:04:dc:6c:a8:75:19:b8:f7:30:df:f1:e8:1e:24:9d:66:1e forked to background, child pid 3185 [ 26.946342][ T3186] 8021q: adding VLAN 0 to HW filter on device bond0 [ 26.956938][ T3186] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.189' (ECDSA) to the list of known hosts. execve("./syz-executor1279608213", ["./syz-executor1279608213"], 0x7ffc5c7105f0 /* 10 vars */) = 0 brk(NULL) = 0x5555560de000 brk(0x5555560dec40) = 0x5555560dec40 arch_prctl(ARCH_SET_FS, 0x5555560de300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor1279608213", 4096) = 28 brk(0x5555560ffc40) = 0x5555560ffc40 brk(0x555556100000) = 0x555556100000 mprotect(0x7f42291e3000, 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 openat(AT_FDCWD, "/dev/char/2:21", O_RDWR) = 3 ioctl(3, TIOCSETD, [21]) = 0 syzkaller login: [ 49.056918][ T3606] INFO: trying to register non-static key. [ 49.062767][ T3606] The code is fine but needs lockdep annotation, or maybe [ 49.069851][ T3606] you didn't initialize this object before use? [ 49.076082][ T3606] turning off the locking correctness validator. [ 49.082382][ T3606] CPU: 1 PID: 3606 Comm: syz-executor127 Not tainted 6.0.0-rc1-syzkaller-00399-g15b3f48a4339 #0 [ 49.092777][ T3606] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 [ 49.102845][ T3606] Call Trace: [ 49.106123][ T3606] [ 49.109054][ T3606] dump_stack_lvl+0xcd/0x134 [ 49.113648][ T3606] register_lock_class+0xf1b/0x1120 [ 49.118835][ T3606] ? is_dynamic_key.part.0+0x130/0x130 [ 49.124282][ T3606] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 49.130265][ T3606] ? __lock_acquire+0xbc3/0x56d0 [ 49.135204][ T3606] __lock_acquire+0x109/0x56d0 [ 49.139972][ T3606] ? find_held_lock+0x2d/0x110 [ 49.144757][ T3606] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 49.150754][ T3606] ? lock_downgrade+0x6e0/0x6e0 [ 49.155628][ T3606] lock_acquire+0x1ab/0x570 [ 49.160131][ T3606] ? gsmld_write+0x5e/0x140 [ 49.164637][ T3606] ? lock_release+0x780/0x780 [ 49.169313][ T3606] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 49.175300][ T3606] ? _copy_mc_to_iter+0x1430/0x1430 [ 49.180500][ T3606] ? _raw_spin_lock_irqsave+0x4e/0x50 [ 49.185900][ T3606] _raw_spin_lock_irqsave+0x39/0x50 [ 49.191107][ T3606] ? gsmld_write+0x5e/0x140 [ 49.195609][ T3606] gsmld_write+0x5e/0x140 [ 49.199941][ T3606] file_tty_write.constprop.0+0x499/0x8f0 [ 49.205666][ T3606] ? gsmtty_tiocmget+0xd0/0xd0 [ 49.210448][ T3606] vfs_write+0x9e9/0xdd0 [ 49.214693][ T3606] ? vfs_read+0x930/0x930 [ 49.219025][ T3606] ? find_held_lock+0x2d/0x110 [ 49.223793][ T3606] ? lock_downgrade+0x6e0/0x6e0 [ 49.228643][ T3606] ? __fget_light+0x20a/0x270 [ 49.233323][ T3606] ksys_write+0x127/0x250 [ 49.237668][ T3606] ? __ia32_sys_read+0xb0/0xb0 [ 49.242431][ T3606] ? lockdep_hardirqs_on+0x79/0x100 [ 49.247635][ T3606] ? _raw_spin_unlock_irq+0x2a/0x40 [ 49.252833][ T3606] ? ptrace_notify+0xfa/0x140 [ 49.257514][ T3606] do_syscall_64+0x35/0xb0 [ 49.261952][ T3606] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 49.267848][ T3606] RIP: 0033:0x7f4229177289 [ 49.272266][ T3606] 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 [ 49.291886][ T3606] RSP: 002b:00007ffd01a33fd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 write(3, NULL, 0) = 0 exit_group(0) = ? +++ exited with 0 +++ [ 49.300298][ T3606] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f4229177289