[ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started System Logging Service. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.29' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 134.710991][ T6371] ===================================================== [ 134.718076][ T6371] BUG: KMSAN: uninit-value in mbind_range+0x1a46/0x1e80 [ 134.725010][ T6371] mbind_range+0x1a46/0x1e80 [ 134.729601][ T6371] do_mbind+0xf42/0x15f0 [ 134.733829][ T6371] __se_sys_mbind+0x437/0xb80 [ 134.738499][ T6371] __x64_sys_mbind+0x19d/0x200 [ 134.743250][ T6371] do_syscall_64+0x54/0xd0 [ 134.747649][ T6371] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 134.753529][ T6371] [ 134.755832][ T6371] Uninit was created at: [ 134.760095][ T6371] kmem_cache_alloc+0x751/0xff0 [ 134.764951][ T6371] do_mbind+0x912/0x15f0 [ 134.769462][ T6371] __se_sys_mbind+0x437/0xb80 [ 134.774168][ T6371] __x64_sys_mbind+0x19d/0x200 [ 134.778945][ T6371] do_syscall_64+0x54/0xd0 [ 134.783449][ T6371] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 134.789357][ T6371] ===================================================== [ 134.796278][ T6371] Disabling lock debugging due to kernel taint [ 134.803020][ T6371] Kernel panic - not syncing: panic_on_kmsan set ... [ 134.809694][ T6371] CPU: 0 PID: 6371 Comm: syz-executor531 Tainted: G B 5.15.0-rc2-syzkaller #0 [ 134.819945][ T6371] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 134.830282][ T6371] Call Trace: [ 134.833554][ T6371] dump_stack_lvl+0x1ff/0x28e [ 134.838224][ T6371] dump_stack+0x25/0x28 [ 134.842582][ T6371] panic+0x44f/0xdeb [ 134.846581][ T6371] ? add_taint+0x187/0x210 [ 134.851344][ T6371] ? add_taint+0x187/0x210 [ 134.855759][ T6371] kmsan_report+0x2ee/0x300 [ 134.860278][ T6371] ? kmsan_get_shadow_origin_ptr+0x90/0xc0 [ 134.866085][ T6371] ? __msan_warning+0xa9/0xf0 [ 134.870766][ T6371] ? mbind_range+0x1a46/0x1e80 [ 134.875523][ T6371] ? do_mbind+0xf42/0x15f0 [ 134.879934][ T6371] ? __se_sys_mbind+0x437/0xb80 [ 134.884779][ T6371] ? __x64_sys_mbind+0x19d/0x200 [ 134.889736][ T6371] ? do_syscall_64+0x54/0xd0 [ 134.894333][ T6371] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 134.900412][ T6371] ? find_vma+0xa6/0x380 [ 134.904672][ T6371] __msan_warning+0xa9/0xf0 [ 134.909172][ T6371] mbind_range+0x1a46/0x1e80 [ 134.913768][ T6371] do_mbind+0xf42/0x15f0 [ 134.918008][ T6371] __se_sys_mbind+0x437/0xb80 [ 134.923103][ T6371] __x64_sys_mbind+0x19d/0x200 [ 134.927868][ T6371] do_syscall_64+0x54/0xd0 [ 134.932295][ T6371] ? syscall_exit_to_user_mode+0xa4/0xc0 [ 134.937919][ T6371] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 134.943815][ T6371] RIP: 0033:0x7f599d9f5829 [ 134.948214][ T6371] 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 [ 134.968167][ T6371] RSP: 002b:00007f599d9a7308 EFLAGS: 00000246 ORIG_RAX: 00000000000000ed [ 134.976684][ T6371] RAX: ffffffffffffffda RBX: 00007f599da7d3e8 RCX: 00007f599d9f5829 [ 134.984642][ T6371] RDX: 0000000000002001 RSI: 0000000000c00007 RDI: 0000000020012000 [ 134.992695][ T6371] RBP: 00007f599da7d3e0 R08: 0000000000000000 R09: 0000010000000002 [ 135.000667][ T6371] R10: 0000000000000000 R11: 0000000000000246 R12: 0000010000000002 [ 135.008620][ T6371] R13: 00007fff7b81c56f R14: 00007f599d9a7400 R15: 0000000000022000 [ 135.016862][ T6371] Kernel Offset: disabled [ 135.021176][ T6371] Rebooting in 86400 seconds..