[ 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 '10.128.0.144' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 131.324309][ T8221] ===================================================== [ 131.331346][ T8221] BUG: KMSAN: uninit-value in mbind_range+0x1cd5/0x2100 [ 131.338275][ T8221] mbind_range+0x1cd5/0x2100 [ 131.342880][ T8221] do_mbind+0xf4f/0x15a0 [ 131.347129][ T8221] __x64_sys_mbind+0x473/0x4f0 [ 131.351878][ T8221] do_syscall_64+0x55/0xc0 [ 131.356279][ T8221] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 131.362157][ T8221] [ 131.364463][ T8221] Uninit was created at: [ 131.368673][ T8221] kmsan_internal_poison_memory+0x56/0xc0 [ 131.374383][ T8221] kmsan_slab_alloc+0xf5/0x160 [ 131.379133][ T8221] kmem_cache_alloc+0x70e/0x1050 [ 131.384165][ T8221] do_mbind+0x8d5/0x15a0 [ 131.389033][ T8221] __x64_sys_mbind+0x473/0x4f0 [ 131.393792][ T8221] do_syscall_64+0x55/0xc0 [ 131.398203][ T8221] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 131.404111][ T8221] ===================================================== [ 131.411028][ T8221] Disabling lock debugging due to kernel taint [ 131.417160][ T8221] Kernel panic - not syncing: panic_on_kmsan set ... [ 131.423813][ T8221] CPU: 1 PID: 8221 Comm: syz-executor911 Tainted: G B 5.13.0-syzkaller #0 [ 131.433599][ T8221] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 131.443667][ T8221] Call Trace: [ 131.446994][ T8221] dump_stack+0x25a/0x2f6 [ 131.451323][ T8221] panic+0x4c7/0xe98 [ 131.455332][ T8221] ? add_taint+0x187/0x210 [ 131.459749][ T8221] ? __msan_metadata_ptr_for_store_1+0x13/0x20 [ 131.466045][ T8221] kmsan_report+0x2ee/0x300 [ 131.470552][ T8221] ? __msan_warning+0xd7/0x150 [ 131.475453][ T8221] ? mbind_range+0x1cd5/0x2100 [ 131.480308][ T8221] ? do_mbind+0xf4f/0x15a0 [ 131.484754][ T8221] ? __x64_sys_mbind+0x473/0x4f0 [ 131.489695][ T8221] ? do_syscall_64+0x55/0xc0 [ 131.494307][ T8221] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 131.500464][ T8221] ? find_vma+0xa6/0x380 [ 131.504703][ T8221] __msan_warning+0xd7/0x150 [ 131.509308][ T8221] mbind_range+0x1cd5/0x2100 [ 131.513917][ T8221] do_mbind+0xf4f/0x15a0 [ 131.518263][ T8221] ? do_syscall_64+0x55/0xc0 [ 131.522971][ T8221] __x64_sys_mbind+0x473/0x4f0 [ 131.527742][ T8221] do_syscall_64+0x55/0xc0 [ 131.532238][ T8221] ? asm_exc_page_fault+0x8/0x30 [ 131.537179][ T8221] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 131.543067][ T8221] RIP: 0033:0x7f087f96b829 [ 131.547473][ T8221] 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 [ 131.567180][ T8221] RSP: 002b:00007f087f91d308 EFLAGS: 00000246 ORIG_RAX: 00000000000000ed [ 131.575612][ T8221] RAX: ffffffffffffffda RBX: 00007f087f9f33e8 RCX: 00007f087f96b829 [ 131.583594][ T8221] RDX: 0000000000002004 RSI: 0000000000800000 RDI: 0000000020001000 [ 131.591555][ T8221] RBP: 00007f087f9f33e0 R08: 0000000000000000 R09: 0000000000000000 [ 131.599517][ T8221] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f087f9f33ec [ 131.607491][ T8221] R13: 00007fffb6142b6f R14: 00007f087f91d400 R15: 0000000000022000 [ 131.615701][ T8221] Kernel Offset: disabled [ 131.620023][ T8221] Rebooting in 86400 seconds..