[ 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 '10.128.0.145' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 75.674092][ T9835] BUG: unable to handle page fault for address: fffffffffffffffc [ 75.681844][ T9835] #PF: supervisor write access in kernel mode [ 75.687918][ T9835] #PF: error_code(0x0002) - not-present page [ 75.693889][ T9835] PGD b68f067 P4D b68f067 PUD b691067 PMD 0 [ 75.699872][ T9835] Oops: 0002 [#1] PREEMPT SMP KASAN [ 75.705068][ T9835] CPU: 1 PID: 9835 Comm: syz-executor356 Not tainted 5.14.0-rc5-next-20210810-syzkaller #0 [ 75.715110][ T9835] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.725532][ T9835] RIP: 0010:alloc_huge_page+0xdcb/0x11b0 [ 75.731172][ T9835] Code: 00 0f 85 6b 03 00 00 48 89 ce 48 89 4a 08 48 b8 00 00 00 00 00 fc ff df 48 c1 ee 03 80 3c 06 00 0f 85 2b 03 00 00 49 8d 7e 10 <49> 89 56 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 [ 75.750952][ T9835] RSP: 0000:ffffc9000c0d7ca0 EFLAGS: 00010046 [ 75.757017][ T9835] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: fffffffffffffffc [ 75.765097][ T9835] RDX: ffffea0005210008 RSI: 1fffffffffffffff RDI: 0000000000000004 [ 75.773059][ T9835] RBP: ffff888077976a50 R08: 0000000000000001 R09: 0000000000000001 [ 75.781102][ T9835] R10: ffffffff81b6fda1 R11: 0000000000000000 R12: ffffffff90246a70 [ 75.789163][ T9835] R13: 0000000000000001 R14: fffffffffffffff4 R15: ffffffff90246b48 [ 75.797135][ T9835] FS: 00007f2fb6877700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 75.806162][ T9835] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 75.812867][ T9835] CR2: fffffffffffffffc CR3: 0000000025908000 CR4: 00000000001506e0 [ 75.820840][ T9835] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 75.828902][ T9835] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 75.836859][ T9835] Call Trace: [ 75.840129][ T9835] ? restore_reserve_on_error+0x1e0/0x1e0 [ 75.846108][ T9835] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 75.852351][ T9835] ? rwsem_down_read_slowpath+0x990/0x990 [ 75.858054][ T9835] ? hugetlb_total_pages+0x140/0x140 [ 75.863322][ T9835] hugetlb_fault+0xf44/0x2500 [ 75.868075][ T9835] handle_mm_fault+0x661/0x790 [ 75.872845][ T9835] do_user_addr_fault+0x48b/0x11c0 [ 75.877949][ T9835] exc_page_fault+0x9e/0x180 [ 75.882528][ T9835] ? asm_exc_page_fault+0x8/0x30 [ 75.887466][ T9835] asm_exc_page_fault+0x1e/0x30 [ 75.892309][ T9835] RIP: 0033:0x40246f [ 75.896185][ T9835] Code: d2 41 b8 9f 0d 00 00 bf 27 01 00 00 31 c0 e8 f8 33 04 00 eb a1 66 0f 1f 44 00 00 be 78 65 00 00 45 31 c0 31 c9 ba 00 00 00 20 <66> 89 34 25 0c 00 00 20 bf 01 01 00 00 be 9c ff ff ff 4c 89 24 25 [ 75.915970][ T9835] RSP: 002b:00007f2fb6877320 EFLAGS: 00010246 [ 75.922173][ T9835] RAX: 0000000000000000 RBX: 00000000004ca408 RCX: 0000000000000000 [ 75.930342][ T9835] RDX: 0000000020000000 RSI: 0000000000006578 RDI: 00000000004ca40c [ 75.938303][ T9835] RBP: 00000000004ca400 R08: 0000000000000000 R09: 0000000000000000 [ 75.946435][ T9835] R10: 00000000ffffffff R11: 0000000000000246 R12: 65732f636f72702f [ 75.954488][ T9835] R13: 00007ffcdea3f94f R14: 00007f2fb6877400 R15: 0000000000022000 [ 75.962623][ T9835] Modules linked in: [ 75.966540][ T9835] CR2: fffffffffffffffc [ 75.970830][ T9835] ---[ end trace b4b86fe3d23ae4b4 ]--- [ 75.976278][ T9835] RIP: 0010:alloc_huge_page+0xdcb/0x11b0 [ 75.982097][ T9835] Code: 00 0f 85 6b 03 00 00 48 89 ce 48 89 4a 08 48 b8 00 00 00 00 00 fc ff df 48 c1 ee 03 80 3c 06 00 0f 85 2b 03 00 00 49 8d 7e 10 <49> 89 56 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 [ 76.001699][ T9835] RSP: 0000:ffffc9000c0d7ca0 EFLAGS: 00010046 [ 76.007839][ T9835] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: fffffffffffffffc [ 76.015792][ T9835] RDX: ffffea0005210008 RSI: 1fffffffffffffff RDI: 0000000000000004 [ 76.023770][ T9835] RBP: ffff888077976a50 R08: 0000000000000001 R09: 0000000000000001 [ 76.032008][ T9835] R10: ffffffff81b6fda1 R11: 0000000000000000 R12: ffffffff90246a70 [ 76.040059][ T9835] R13: 0000000000000001 R14: fffffffffffffff4 R15: ffffffff90246b48 [ 76.048016][ T9835] FS: 00007f2fb6877700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 76.057025][ T9835] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 76.063637][ T9835] CR2: fffffffffffffffc CR3: 0000000025908000 CR4: 00000000001506e0 [ 76.071822][ T9835] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 76.079990][ T9835] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 76.088039][ T9835] Kernel panic - not syncing: Fatal exception [ 77.165522][ T9835] Shutting down cpus with NMI [ 77.171931][ T9835] Kernel Offset: disabled [ 77.176771][ T9835] Rebooting in 86400 seconds..