[ OK ] Started Getty on tty1. [ OK ] Started Getty on tty4. [ OK ] Reached target Login Prompts. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.212' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 32.363543] FAULT_INJECTION: forcing a failure. [ 32.363543] name failslab, interval 1, probability 0, space 0, times 1 [ 32.374864] CPU: 1 PID: 8112 Comm: syz-executor223 Not tainted 4.19.211-syzkaller #0 [ 32.382738] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.392157] Call Trace: [ 32.394729] dump_stack+0x1fc/0x2ef [ 32.398353] should_fail.cold+0xa/0xf [ 32.402150] ? setup_fault_attr+0x200/0x200 [ 32.406481] ? lock_acquire+0x170/0x3c0 [ 32.410439] __should_failslab+0x115/0x180 [ 32.414659] should_failslab+0x5/0x10 [ 32.418444] kmem_cache_alloc+0x277/0x370 [ 32.422579] ptlock_alloc+0x1d/0x70 [ 32.426190] pte_alloc_one+0x68/0x190 [ 32.429971] __pte_alloc+0x21/0x340 [ 32.433580] copy_page_range+0x1d3d/0x2ff0 [ 32.437814] ? should_fail+0x142/0x7b0 [ 32.441694] ? copy_process.part.0+0x3129/0x8260 [ 32.446449] ? lock_downgrade+0x720/0x720 [ 32.450578] ? apply_to_page_range+0xc10/0xc10 [ 32.455159] copy_process.part.0+0x5b22/0x8260 [ 32.459736] ? __cleanup_sighand+0x60/0x60 [ 32.464040] ? kernel_read+0x110/0x110 [ 32.468006] _do_fork+0x22f/0xf30 [ 32.471443] ? fork_idle+0x220/0x220 [ 32.475138] ? ksys_write+0x1c8/0x2a0 [ 32.478944] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 32.484293] ? trace_hardirqs_off_caller+0x6e/0x210 [ 32.489287] ? do_syscall_64+0x21/0x620 [ 32.493258] do_syscall_64+0xf9/0x620 [ 32.497041] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 32.502208] RIP: 0033:0x7fb33b53c129 [ 32.505900] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 14 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 c0 ff ff ff f7 d8 64 89 01 48 [ 32.524955] RSP: 002b:00007ffe08322e98 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 [ 32.532642] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb33b53c129 [ 32.539893] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 32.547157] RBP: 00007ffe08322eb0 R08: 0000000000000000 R09: 0000000000000000 [ 32.554402] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 32.561650] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 32.578054] WARNING: CPU: 1 PID: 8112 at arch/x86/mm/pat.c:1064 untrack_pfn+0x247/0x290 [ 32.586178] Kernel panic - not syncing: panic_on_warn set ... [ 32.586178] [ 32.593519] CPU: 1 PID: 8112 Comm: syz-executor223 Not tainted 4.19.211-syzkaller #0 [ 32.601373] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.610703] Call Trace: [ 32.613272] dump_stack+0x1fc/0x2ef [ 32.616900] panic+0x26a/0x50e [ 32.620071] ? __warn_printk+0xf3/0xf3 [ 32.623941] ? untrack_pfn+0x247/0x290 [ 32.627808] ? __probe_kernel_read+0x130/0x1b0 [ 32.632365] ? __warn.cold+0x5/0x5a [ 32.635969] ? __warn+0xe4/0x200 [ 32.639314] ? untrack_pfn+0x247/0x290 [ 32.643192] __warn.cold+0x20/0x5a [ 32.646707] ? untrack_pfn+0x247/0x290 [ 32.650572] report_bug+0x262/0x2b0 [ 32.654178] do_error_trap+0x1d7/0x310 [ 32.658046] ? math_error+0x310/0x310 [ 32.661825] ? pmd_huge+0xf2/0x150 [ 32.665343] ? rbt_memtype_copy_nth_element+0x190/0x190 [ 32.670696] ? lock_acquire+0x170/0x3c0 [ 32.674656] ? __bpf_address_lookup+0x330/0x330 [ 32.679304] ? error_entry+0x72/0xd0 [ 32.682999] ? trace_hardirqs_off_caller+0x6e/0x210 [ 32.687995] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 32.692819] invalid_op+0x14/0x20 [ 32.696250] RIP: 0010:untrack_pfn+0x247/0x290 [ 32.700722] Code: 84 6c ff ff ff e8 09 55 37 00 4c 89 ee 4c 89 e7 e8 ae da ff ff e8 f9 54 37 00 48 85 db 0f 85 58 ff ff ff eb 82 e8 e9 54 37 00 <0f> 0b e9 76 ff ff ff 48 89 df e8 ca 31 6d 00 e9 98 fe ff ff e8 60 [ 32.719599] RSP: 0018:ffff8880a23a7910 EFLAGS: 00010293 [ 32.724944] RAX: ffff88809e34a340 RBX: ffff888091cb6108 RCX: ffffffff812b2f56 [ 32.732191] RDX: 0000000000000000 RSI: ffffffff812b3087 RDI: 0000000000000005 [ 32.739451] RBP: 1ffff11014474f22 R08: ffff8880a23a7878 R09: 0000000000000000 [ 32.746695] R10: 0000000000000005 R11: 0000000000000000 R12: 00000000ffffffea [ 32.753950] R13: 0000000000000000 R14: 0000000000000000 R15: ffff888091cb6158 [ 32.761211] ? untrack_pfn+0x116/0x290 [ 32.765074] ? untrack_pfn+0x247/0x290 [ 32.768944] ? track_pfn_insert+0x180/0x180 [ 32.773247] ? vm_normal_page_pmd+0x4c0/0x4c0 [ 32.777734] ? _do_fork+0x22f/0xf30 [ 32.781337] ? do_syscall_64+0xf9/0x620 [ 32.785290] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 32.790649] ? uprobe_munmap+0x2d/0x4d0 [ 32.794604] unmap_single_vma+0x1bc/0x300 [ 32.798749] unmap_vmas+0xa9/0x180 [ 32.802276] exit_mmap+0x2b9/0x530 [ 32.805823] ? __ia32_sys_remap_file_pages+0x150/0x150 [ 32.811091] ? __khugepaged_exit+0x2a6/0x3e0 [ 32.815493] ? __khugepaged_exit+0x2a6/0x3e0 [ 32.819882] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 32.824879] ? kmem_cache_free+0x226/0x260 [ 32.829097] ? __khugepaged_exit+0x2c7/0x3e0 [ 32.833506] mmput+0x14e/0x4a0 [ 32.836689] copy_process.part.0+0x662a/0x8260 [ 32.841263] ? __cleanup_sighand+0x60/0x60 [ 32.845479] ? kernel_read+0x110/0x110 [ 32.849355] _do_fork+0x22f/0xf30 [ 32.852802] ? fork_idle+0x220/0x220 [ 32.856506] ? ksys_write+0x1c8/0x2a0 [ 32.860289] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 32.865630] ? trace_hardirqs_off_caller+0x6e/0x210 [ 32.870716] ? do_syscall_64+0x21/0x620 [ 32.874672] do_syscall_64+0xf9/0x620 [ 32.878454] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 32.883621] RIP: 0033:0x7fb33b53c129 [ 32.887313] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 14 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 c0 ff ff ff f7 d8 64 89 01 48 [ 32.906191] RSP: 002b:00007ffe08322e98 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 [ 32.913875] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb33b53c129 [ 32.921141] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 32.928386] RBP: 00007ffe08322eb0 R08: 0000000000000000 R09: 0000000000000000 [ 32.935653] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 32.942925] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 32.950452] Kernel Offset: disabled [ 32.954121] Rebooting in 86400 seconds..