[ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.216' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 133.620975][ T8230] ===================================================== [ 133.627927][ T8230] BUG: KMSAN: uninit-value in do_mbind+0x2d1b/0x38c0 [ 133.634617][ T8230] CPU: 0 PID: 8230 Comm: syz-executor736 Not tainted 5.12.0-rc6-syzkaller #0 [ 133.643468][ T8230] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 133.653597][ T8230] Call Trace: [ 133.656881][ T8230] dump_stack+0x24c/0x2e0 [ 133.661202][ T8230] kmsan_report+0xfb/0x1e0 [ 133.665713][ T8230] __msan_warning+0x5c/0xa0 [ 133.670202][ T8230] do_mbind+0x2d1b/0x38c0 [ 133.674658][ T8230] __se_sys_mbind+0x3a6/0x3c0 [ 133.679477][ T8230] __x64_sys_mbind+0x6e/0x90 [ 133.684065][ T8230] do_syscall_64+0x9f/0x140 [ 133.688582][ T8230] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 133.694476][ T8230] RIP: 0033:0x4456f9 [ 133.698368][ T8230] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 133.718159][ T8230] RSP: 002b:00007ffba6b01308 EFLAGS: 00000246 ORIG_RAX: 00000000000000ed [ 133.726597][ T8230] RAX: ffffffffffffffda RBX: 00000000004ca408 RCX: 00000000004456f9 [ 133.734570][ T8230] RDX: 0000000000002001 RSI: 0000000000800000 RDI: 0000000020001000 [ 133.742551][ T8230] RBP: 00000000004ca400 R08: 0000000000000007 R09: 0000000000000000 [ 133.750536][ T8230] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004ca40c [ 133.758504][ T8230] R13: 00007ffe836a899f R14: 00007ffba6b01400 R15: 0000000000022000 [ 133.766468][ T8230] [ 133.768780][ T8230] Uninit was created at: [ 133.773141][ T8230] kmsan_internal_poison_shadow+0x66/0xd0 [ 133.778859][ T8230] kmsan_slab_alloc+0x8e/0xe0 [ 133.783610][ T8230] kmem_cache_alloc+0x895/0x1030 [ 133.788667][ T8230] do_mbind+0x8d5/0x38c0 [ 133.792908][ T8230] __se_sys_mbind+0x3a6/0x3c0 [ 133.797587][ T8230] __x64_sys_mbind+0x6e/0x90 [ 133.802179][ T8230] do_syscall_64+0x9f/0x140 [ 133.806685][ T8230] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 133.812649][ T8230] ===================================================== [ 133.819557][ T8230] Disabling lock debugging due to kernel taint [ 133.825684][ T8230] Kernel panic - not syncing: panic_on_kmsan set ... [ 133.832333][ T8230] CPU: 0 PID: 8230 Comm: syz-executor736 Tainted: G B 5.12.0-rc6-syzkaller #0 [ 133.842637][ T8230] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 133.852688][ T8230] Call Trace: [ 133.855967][ T8230] dump_stack+0x24c/0x2e0 [ 133.860286][ T8230] panic+0x4c6/0xea7 [ 133.864167][ T8230] ? add_taint+0x17c/0x210 [ 133.868560][ T8230] kmsan_report+0x1de/0x1e0 [ 133.873045][ T8230] __msan_warning+0x5c/0xa0 [ 133.877529][ T8230] do_mbind+0x2d1b/0x38c0 [ 133.881845][ T8230] __se_sys_mbind+0x3a6/0x3c0 [ 133.886508][ T8230] __x64_sys_mbind+0x6e/0x90 [ 133.891081][ T8230] do_syscall_64+0x9f/0x140 [ 133.895568][ T8230] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 133.901443][ T8230] RIP: 0033:0x4456f9 [ 133.905317][ T8230] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 [ 133.924999][ T8230] RSP: 002b:00007ffba6b01308 EFLAGS: 00000246 ORIG_RAX: 00000000000000ed [ 133.933403][ T8230] RAX: ffffffffffffffda RBX: 00000000004ca408 RCX: 00000000004456f9 [ 133.941354][ T8230] RDX: 0000000000002001 RSI: 0000000000800000 RDI: 0000000020001000 [ 133.949310][ T8230] RBP: 00000000004ca400 R08: 0000000000000007 R09: 0000000000000000 [ 133.957273][ T8230] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004ca40c [ 133.965228][ T8230] R13: 00007ffe836a899f R14: 00007ffba6b01400 R15: 0000000000022000 [ 133.974669][ T8230] Kernel Offset: disabled [ 133.978980][ T8230] Rebooting in 86400 seconds..