[ 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 Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ 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 '10.128.0.215' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 119.505718][ T6374] ===================================================== [ 119.512693][ T6374] BUG: KMSAN: uninit-value in mbind_range+0x1a46/0x1e80 [ 119.519620][ T6374] mbind_range+0x1a46/0x1e80 [ 119.524196][ T6374] do_mbind+0xf42/0x15f0 [ 119.528424][ T6374] __se_sys_mbind+0x437/0xb80 [ 119.533084][ T6374] __x64_sys_mbind+0x19d/0x200 [ 119.537832][ T6374] do_syscall_64+0x54/0xd0 [ 119.542234][ T6374] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 119.548117][ T6374] [ 119.550441][ T6374] Uninit was created at: [ 119.554728][ T6374] kmem_cache_alloc+0x751/0xff0 [ 119.559568][ T6374] do_mbind+0x912/0x15f0 [ 119.563816][ T6374] __se_sys_mbind+0x437/0xb80 [ 119.568482][ T6374] __x64_sys_mbind+0x19d/0x200 [ 119.573231][ T6374] do_syscall_64+0x54/0xd0 [ 119.577630][ T6374] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 119.583511][ T6374] ===================================================== [ 119.590415][ T6374] Disabling lock debugging due to kernel taint [ 119.596540][ T6374] Kernel panic - not syncing: panic_on_kmsan set ... [ 119.603191][ T6374] CPU: 1 PID: 6374 Comm: syz-executor640 Tainted: G B 5.15.0-rc2-syzkaller #0 [ 119.614105][ T6374] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 119.624142][ T6374] Call Trace: [ 119.627405][ T6374] dump_stack_lvl+0x1ff/0x28e [ 119.632074][ T6374] dump_stack+0x25/0x28 [ 119.636215][ T6374] panic+0x44f/0xdeb [ 119.640100][ T6374] ? add_taint+0x187/0x210 [ 119.644588][ T6374] ? __msan_metadata_ptr_for_store_1+0x13/0x20 [ 119.650731][ T6374] kmsan_report+0x2ee/0x300 [ 119.655221][ T6374] ? __msan_warning+0xd7/0x150 [ 119.659969][ T6374] ? mbind_range+0x1a46/0x1e80 [ 119.664716][ T6374] ? do_mbind+0xf42/0x15f0 [ 119.669303][ T6374] ? __se_sys_mbind+0x437/0xb80 [ 119.674149][ T6374] ? __x64_sys_mbind+0x19d/0x200 [ 119.679070][ T6374] ? do_syscall_64+0x54/0xd0 [ 119.683641][ T6374] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 119.689878][ T6374] __msan_warning+0xd7/0x150 [ 119.694454][ T6374] mbind_range+0x1a46/0x1e80 [ 119.699030][ T6374] do_mbind+0xf42/0x15f0 [ 119.703256][ T6374] ? __msan_memset+0x105/0x150 [ 119.708002][ T6374] __se_sys_mbind+0x437/0xb80 [ 119.712662][ T6374] __x64_sys_mbind+0x19d/0x200 [ 119.717410][ T6374] do_syscall_64+0x54/0xd0 [ 119.721807][ T6374] ? syscall_exit_to_user_mode+0xa4/0xc0 [ 119.727427][ T6374] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 119.733305][ T6374] RIP: 0033:0x7f558a7b3829 [ 119.737702][ T6374] 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 [ 119.757300][ T6374] RSP: 002b:00007f558a765308 EFLAGS: 00000246 ORIG_RAX: 00000000000000ed [ 119.765739][ T6374] RAX: ffffffffffffffda RBX: 00007f558a83b3e8 RCX: 00007f558a7b3829 [ 119.773714][ T6374] RDX: 0000000000002001 RSI: 0000000000c00007 RDI: 0000000020012000 [ 119.781667][ T6374] RBP: 00007f558a83b3e0 R08: 0000000000000000 R09: 0000010000000002 [ 119.789630][ T6374] R10: 0000000000000000 R11: 0000000000000246 R12: 0000010000000002 [ 119.797584][ T6374] R13: 00007fff8ff8aadf R14: 00007f558a765400 R15: 0000000000022000 [ 119.805818][ T6374] Kernel Offset: disabled [ 119.810218][ T6374] Rebooting in 86400 seconds..