[  OK  ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch.
[  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 Getty on tty1.
[  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 '10.128.0.59' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   67.755643][   T28] audit: type=1400 audit(1595804374.236:8): avc:  denied  { execmem } for  pid=6824 comm="syz-executor585" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1
[   67.874726][    T0] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
[   67.874765][    T0] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
[   67.874780][    T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.8.0-rc6-syzkaller #0
[   67.874788][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   67.874811][    T0] RIP: 0010:__switch_to_asm+0x0/0x40
[   67.874824][    T0] Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   67.874832][    T0] RSP: 0018:ffffc90000d3fcf8 EFLAGS: 00010046
[   67.874842][    T0] RAX: dffffc0000000000 RBX: ffff8880ae735e18 RCX: 0000000000000000
[   67.874851][    T0] RDX: 1ffff11015ce6bc2 RSI: ffff8880a2cd6480 RDI: ffff8880a963a340
[   67.874859][    T0] RBP: ffffc90000d3fdd0 R08: 0000000000000001 R09: ffff8880a963ac08
[   67.874867][    T0] R10: fffffbfff155da49 R11: 0000000000000000 R12: ffff8880a963a340
[   67.874875][    T0] R13: ffff8880ae735e00 R14: ffff8880a2cd6480 R15: ffff8880a963a770
[   67.874886][    T0] FS:  0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
[   67.874894][    T0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   67.874902][    T0] CR2: 00007f815380b000 CR3: 0000000090a1b000 CR4: 00000000001406e0
[   67.874913][    T0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   67.874921][    T0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   67.874925][    T0] Call Trace:
[   67.874946][    T0]  __schedule+0x8ea/0x2210
[   67.874966][    T0]  ? io_schedule_timeout+0x140/0x140
[   67.874982][    T0]  ? lockdep_hardirqs_on_prepare+0x3a2/0x590
[   67.874995][    T0]  ? trace_hardirqs_on+0x5f/0x220
[   67.875007][    T0]  ? lockdep_hardirqs_on+0x6a/0xe0
[   67.875023][    T0]  schedule_idle+0x53/0x90
[   67.875037][    T0]  do_idle+0x323/0x6d0
[   67.875052][    T0]  ? arch_cpu_idle_exit+0x70/0x70
[   67.875069][    T0]  cpu_startup_entry+0x14/0x20
[   67.875084][    T0]  start_secondary+0x2b3/0x370
[   67.875099][    T0]  ? set_cpu_sibling_map+0x1e80/0x1e80
[   67.875116][    T0]  secondary_startup_64+0xa4/0xb0
[   67.875126][    T0] Modules linked in:
[   67.875144][    T0] ---[ end trace 4cb2b209d7e5166b ]---
[   67.875159][    T0] RIP: 0010:__switch_to_asm+0x0/0x40
[   67.875172][    T0] Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   67.875179][    T0] RSP: 0018:ffffc90000d3fcf8 EFLAGS: 00010046
[   67.875189][    T0] RAX: dffffc0000000000 RBX: ffff8880ae735e18 RCX: 0000000000000000
[   67.875197][    T0] RDX: 1ffff11015ce6bc2 RSI: ffff8880a2cd6480 RDI: ffff8880a963a340
[   67.875205][    T0] RBP: ffffc90000d3fdd0 R08: 0000000000000001 R09: ffff8880a963ac08
[   67.875213][    T0] R10: fffffbfff155da49 R11: 0000000000000000 R12: ffff8880a963a340
[   67.875221][    T0] R13: ffff8880ae735e00 R14: ffff8880a2cd6480 R15: ffff8880a963a770
[   67.875235][    T0] FS:  0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
[   67.875243][    T0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   67.875251][    T0] CR2: 00007f815380b000 CR3: 0000000090a1b000 CR4: 00000000001406e0
[   67.875261][    T0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   67.875268][    T0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   67.875275][    T0] Kernel panic - not syncing: Fatal exception
[   67.876316][    T0] Kernel Offset: disabled
[   68.216939][    T0] Rebooting in 86400 seconds..