[  OK  ] Reached target Multi-User System.
[  OK  ] Reached target Graphical Interface.
         Starting Update UTMP about System Runlevel Changes...
[   47.439710][ T6510] sshd (6510) used greatest stack depth: 23568 bytes left
[  OK  ] Started Update UTMP about System Runlevel Changes.


Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.0.236' (ECDSA) to the list of known hosts.
executing program
executing program
executing program
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syzkaller login: [   61.514357][    T0] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
[   61.514368][    T0] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
[   61.514382][    T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.8.0-rc6-syzkaller #0
[   61.514389][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   61.514410][    T0] RIP: 0010:__switch_to_asm+0x0/0x40
[   61.514424][    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
[   61.514431][    T0] RSP: 0018:ffffc90000d3fcf8 EFLAGS: 00010046
[   61.514442][    T0] RAX: dffffc0000000000 RBX: ffff8880ae735e18 RCX: 0000000000000000
[   61.514451][    T0] RDX: 1ffff11015ce6bc2 RSI: ffff88809e5481c0 RDI: ffff8880a9636340
[   61.514459][    T0] RBP: ffffc90000d3fdd0 R08: 0000000000000001 R09: ffff8880a9636c08
[   61.514467][    T0] R10: fffffbfff155da49 R11: 0000000000000000 R12: ffff8880a9636340
[   61.514475][    T0] R13: ffff8880ae735e00 R14: ffff88809e5481c0 R15: ffff8880a9636770
[   61.514492][    T0] FS:  0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
[   61.514500][    T0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   61.514507][    T0] CR2: 0000000020000180 CR3: 00000000922a8000 CR4: 00000000001406e0
[   61.514519][    T0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   61.514527][    T0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   61.514531][    T0] Call Trace:
[   61.514550][    T0]  __schedule+0x8ea/0x2210
[   61.514569][    T0]  ? io_schedule_timeout+0x140/0x140
[   61.514585][    T0]  ? lockdep_hardirqs_on_prepare+0x3a2/0x590
[   61.514598][    T0]  ? trace_hardirqs_on+0x5f/0x220
[   61.514610][    T0]  ? lockdep_hardirqs_on+0x6a/0xe0
[   61.514625][    T0]  schedule_idle+0x53/0x90
[   61.514639][    T0]  do_idle+0x323/0x6d0
[   61.514654][    T0]  ? arch_cpu_idle_exit+0x70/0x70
[   61.514669][    T0]  ? trace_hardirqs_on+0x5f/0x220
[   61.514681][    T0]  ? lockdep_hardirqs_on+0x6a/0xe0
[   61.514696][    T0]  cpu_startup_entry+0x14/0x20
[   61.514711][    T0]  start_secondary+0x2b3/0x370
[   61.514726][    T0]  ? set_cpu_sibling_map+0x1e80/0x1e80
[   61.514742][    T0]  secondary_startup_64+0xa4/0xb0
[   61.514753][    T0] Modules linked in:
[   61.514769][    T0] ---[ end trace 64b61986d1bc6bc5 ]---
[   61.514784][    T0] RIP: 0010:__switch_to_asm+0x0/0x40
[   61.514796][    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
[   61.514803][    T0] RSP: 0018:ffffc90000d3fcf8 EFLAGS: 00010046
[   61.514813][    T0] RAX: dffffc0000000000 RBX: ffff8880ae735e18 RCX: 0000000000000000
[   61.514821][    T0] RDX: 1ffff11015ce6bc2 RSI: ffff88809e5481c0 RDI: ffff8880a9636340
[   61.514829][    T0] RBP: ffffc90000d3fdd0 R08: 0000000000000001 R09: ffff8880a9636c08
[   61.514837][    T0] R10: fffffbfff155da49 R11: 0000000000000000 R12: ffff8880a9636340
[   61.514845][    T0] R13: ffff8880ae735e00 R14: ffff88809e5481c0 R15: ffff8880a9636770
[   61.514856][    T0] FS:  0000000000000000(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
[   61.514864][    T0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   61.514872][    T0] CR2: 0000000020000180 CR3: 00000000922a8000 CR4: 00000000001406e0
[   61.514880][    T0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   61.514887][    T0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   61.514894][    T0] Kernel panic - not syncing: Fatal exception
[   61.515937][    T0] Kernel Offset: disabled
[   61.867542][    T0] Rebooting in 86400 seconds..