[ 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 '10.128.0.147' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 132.926100][ T8216] ===================================================== [ 132.933086][ T8216] BUG: KMSAN: uninit-value in mbind_range+0x1cd5/0x2100 [ 132.940012][ T8216] mbind_range+0x1cd5/0x2100 [ 132.944587][ T8216] do_mbind+0xf4f/0x15a0 [ 132.948842][ T8216] __x64_sys_mbind+0x473/0x4f0 [ 132.953621][ T8216] do_syscall_64+0x55/0xc0 [ 132.958023][ T8216] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 132.963985][ T8216] [ 132.966390][ T8216] Uninit was created at: [ 132.970610][ T8216] kmsan_internal_poison_memory+0x56/0xc0 [ 132.976363][ T8216] kmsan_slab_alloc+0xf5/0x160 [ 132.981176][ T8216] kmem_cache_alloc+0x70e/0x1050 [ 132.986102][ T8216] do_mbind+0x8d5/0x15a0 [ 132.990432][ T8216] __x64_sys_mbind+0x473/0x4f0 [ 132.995240][ T8216] do_syscall_64+0x55/0xc0 [ 132.999641][ T8216] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 133.005520][ T8216] ===================================================== [ 133.012430][ T8216] Disabling lock debugging due to kernel taint [ 133.018554][ T8216] Kernel panic - not syncing: panic_on_kmsan set ... [ 133.025376][ T8216] CPU: 1 PID: 8216 Comm: syz-executor920 Tainted: G B 5.13.0-syzkaller #0 [ 133.035168][ T8216] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 133.045381][ T8216] Call Trace: [ 133.048646][ T8216] dump_stack+0x25a/0x2f6 [ 133.052972][ T8216] panic+0x4c7/0xe98 [ 133.056881][ T8216] ? add_taint+0x187/0x210 [ 133.061281][ T8216] ? __msan_metadata_ptr_for_store_1+0x13/0x20 [ 133.067441][ T8216] kmsan_report+0x2ee/0x300 [ 133.071941][ T8216] ? __msan_warning+0xd7/0x150 [ 133.076695][ T8216] ? mbind_range+0x1cd5/0x2100 [ 133.081447][ T8216] ? do_mbind+0xf4f/0x15a0 [ 133.085850][ T8216] ? __x64_sys_mbind+0x473/0x4f0 [ 133.090794][ T8216] ? do_syscall_64+0x55/0xc0 [ 133.095375][ T8216] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 133.101448][ T8216] ? find_vma+0xa6/0x380 [ 133.105698][ T8216] __msan_warning+0xd7/0x150 [ 133.110296][ T8216] mbind_range+0x1cd5/0x2100 [ 133.114887][ T8216] do_mbind+0xf4f/0x15a0 [ 133.119131][ T8216] ? do_syscall_64+0x55/0xc0 [ 133.123718][ T8216] __x64_sys_mbind+0x473/0x4f0 [ 133.128486][ T8216] do_syscall_64+0x55/0xc0 [ 133.132924][ T8216] ? syscall_exit_to_user_mode+0xaa/0xd0 [ 133.138654][ T8216] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 133.144599][ T8216] RIP: 0033:0x7f91f9a6f829 [ 133.149251][ T8216] 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 [ 133.169397][ T8216] RSP: 002b:00007f91f9a21308 EFLAGS: 00000246 ORIG_RAX: 00000000000000ed [ 133.177809][ T8216] RAX: ffffffffffffffda RBX: 00007f91f9af73e8 RCX: 00007f91f9a6f829 [ 133.185767][ T8216] RDX: 0000000000002001 RSI: 0000000000c00000 RDI: 0000000020012000 [ 133.193826][ T8216] RBP: 00007f91f9af73e0 R08: 0000000000000000 R09: 0000010000000002 [ 133.201793][ T8216] R10: 0000000000000000 R11: 0000000000000246 R12: 0000010000000002 [ 133.209802][ T8216] R13: 00007ffe6e062aef R14: 00007f91f9a21400 R15: 0000000000022000 [ 133.218070][ T8216] Kernel Offset: disabled [ 133.222422][ T8216] Rebooting in 86400 seconds..