[ OK ] Started Getty on tty1. [ OK ] Started Getty on tty2. [ 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 '10.128.0.42' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 131.466905][ T6373] ===================================================== [ 131.473886][ T6373] BUG: KMSAN: uninit-value in mbind_range+0x1a46/0x1e80 [ 131.480858][ T6373] mbind_range+0x1a46/0x1e80 [ 131.485443][ T6373] do_mbind+0xf42/0x15f0 [ 131.489685][ T6373] __se_sys_mbind+0x437/0xb80 [ 131.494367][ T6373] __x64_sys_mbind+0x19d/0x200 [ 131.499117][ T6373] do_syscall_64+0x54/0xd0 [ 131.503609][ T6373] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 131.509496][ T6373] [ 131.511799][ T6373] Uninit was created at: [ 131.516195][ T6373] kmem_cache_alloc+0x751/0xff0 [ 131.521037][ T6373] do_mbind+0x912/0x15f0 [ 131.525296][ T6373] __se_sys_mbind+0x437/0xb80 [ 131.529979][ T6373] __x64_sys_mbind+0x19d/0x200 [ 131.534760][ T6373] do_syscall_64+0x54/0xd0 [ 131.539184][ T6373] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 131.545075][ T6373] ===================================================== [ 131.552083][ T6373] Disabling lock debugging due to kernel taint [ 131.558212][ T6373] Kernel panic - not syncing: panic_on_kmsan set ... [ 131.564866][ T6373] CPU: 0 PID: 6373 Comm: syz-executor202 Tainted: G B 5.15.0-rc2-syzkaller #0 [ 131.575091][ T6373] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 131.585136][ T6373] Call Trace: [ 131.588409][ T6373] dump_stack_lvl+0x1ff/0x28e [ 131.593232][ T6373] dump_stack+0x25/0x28 [ 131.597398][ T6373] panic+0x44f/0xdeb [ 131.601288][ T6373] ? add_taint+0x187/0x210 [ 131.605717][ T6373] ? __msan_metadata_ptr_for_store_1+0x13/0x20 [ 131.611892][ T6373] kmsan_report+0x2ee/0x300 [ 131.616397][ T6373] ? __msan_warning+0xd7/0x150 [ 131.621253][ T6373] ? mbind_range+0x1a46/0x1e80 [ 131.626023][ T6373] ? do_mbind+0xf42/0x15f0 [ 131.630428][ T6373] ? __se_sys_mbind+0x437/0xb80 [ 131.635264][ T6373] ? __x64_sys_mbind+0x19d/0x200 [ 131.640331][ T6373] ? do_syscall_64+0x54/0xd0 [ 131.644917][ T6373] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 131.650989][ T6373] __msan_warning+0xd7/0x150 [ 131.655584][ T6373] mbind_range+0x1a46/0x1e80 [ 131.660171][ T6373] do_mbind+0xf42/0x15f0 [ 131.664405][ T6373] ? __msan_memset+0x105/0x150 [ 131.669167][ T6373] __se_sys_mbind+0x437/0xb80 [ 131.673870][ T6373] __x64_sys_mbind+0x19d/0x200 [ 131.678659][ T6373] do_syscall_64+0x54/0xd0 [ 131.683431][ T6373] ? exc_page_fault+0x76/0x120 [ 131.688207][ T6373] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 131.694123][ T6373] RIP: 0033:0x7f04cd969829 [ 131.698545][ T6373] 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 [ 131.718166][ T6373] RSP: 002b:00007f04cd91b308 EFLAGS: 00000246 ORIG_RAX: 00000000000000ed [ 131.726947][ T6373] RAX: ffffffffffffffda RBX: 00007f04cd9f13e8 RCX: 00007f04cd969829 [ 131.734938][ T6373] RDX: 0000000000002001 RSI: 0000000000c00007 RDI: 0000000020012000 [ 131.742927][ T6373] RBP: 00007f04cd9f13e0 R08: 0000000000000000 R09: 0000010000000002 [ 131.750923][ T6373] R10: 0000000000000000 R11: 0000000000000246 R12: 0000010000000002 [ 131.758924][ T6373] R13: 00007ffc53ccb0af R14: 00007f04cd91b400 R15: 0000000000022000 [ 131.767184][ T6373] Kernel Offset: disabled [ 131.771503][ T6373] Rebooting in 86400 seconds..