Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.1.9' (ECDSA) to the list of known hosts.
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syzkaller login: [   58.179353][ T6866] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN
[   58.191098][ T6866] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
[   58.199487][ T6866] CPU: 0 PID: 6866 Comm: syz-executor262 Not tainted 5.8.0-syzkaller #0
[   58.207784][ T6866] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   58.218377][ T6866] RIP: 0010:x86_fsgsbase_read_task+0x16d/0x310
[   58.224507][ T6866] Code: 3c 02 00 0f 85 7c 01 00 00 4c 8b a5 80 04 00 00 44 0f b7 eb 48 b8 00 00 00 00 00 fc ff df 49 8d 7c 24 08 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 30 01 00 00 45 3b 6c 24 08 0f
[   58.244099][ T6866] RSP: 0018:ffffc90001677db8 EFLAGS: 00010202
[   58.250141][ T6866] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
[   58.258111][ T6866] RDX: 0000000000000001 RSI: 0000000000000008 RDI: 0000000000000008
[   58.266062][ T6866] RBP: ffff88809eaf9780 R08: 0000000000000000 R09: ffff88809eaf9c17
[   58.274022][ T6866] R10: ffffed1013d5f382 R11: 0000000000000000 R12: 0000000000000000
[   58.282667][ T6866] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000020000080
[   58.290639][ T6866] FS:  0000000000000000(0000) GS:ffff8880ae600000(0063) knlGS:0000000009cf4840
[   58.299555][ T6866] CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
[   58.306115][ T6866] CR2: 0000000020000080 CR3: 000000009fa0d000 CR4: 00000000001506f0
[   58.314081][ T6866] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   58.322043][ T6866] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   58.329988][ T6866] Call Trace:
[   58.333270][ T6866]  putreg32+0x3ab/0x530
[   58.337408][ T6866]  genregs32_set+0xa4/0x100
[   58.341887][ T6866]  ? putreg32+0x530/0x530
[   58.346191][ T6866]  compat_arch_ptrace+0x36c/0xd90
[   58.351201][ T6866]  ? lockdep_hardirqs_on_prepare+0x354/0x530
[   58.357172][ T6866]  ? arch_ptrace+0x960/0x960
[   58.361735][ T6866]  ? ptrace_check_attach+0xab/0x390
[   58.366906][ T6866]  __ia32_compat_sys_ptrace+0x220/0x2f0
[   58.372445][ T6866]  __do_fast_syscall_32+0x57/0x80
[   58.377459][ T6866]  do_fast_syscall_32+0x2f/0x70
[   58.382300][ T6866]  entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
[   58.388601][ T6866] RIP: 0023:0xf7fe9569
[   58.392644][ T6866] Code: 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90
[   58.412229][ T6866] RSP: 002b:00000000ffd99e7c EFLAGS: 00000217 ORIG_RAX: 000000000000001a
[   58.420630][ T6866] RAX: ffffffffffffffda RBX: 000000000000000d RCX: 0000000000001ad1
[   58.428578][ T6866] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000001ad1
[   58.436545][ T6866] RBP: 000000000000003c R08: 0000000000000000 R09: 0000000000000000
[   58.444496][ T6866] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[   58.452450][ T6866] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   58.460441][ T6866] Modules linked in:
[   58.465500][ T6866] ---[ end trace f79c8042700af7c5 ]---
[   58.471029][ T6866] RIP: 0010:x86_fsgsbase_read_task+0x16d/0x310
[   58.477335][ T6866] Code: 3c 02 00 0f 85 7c 01 00 00 4c 8b a5 80 04 00 00 44 0f b7 eb 48 b8 00 00 00 00 00 fc ff df 49 8d 7c 24 08 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 30 01 00 00 45 3b 6c 24 08 0f
[   58.498454][ T6866] RSP: 0018:ffffc90001677db8 EFLAGS: 00010202
[   58.504524][ T6866] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
[   58.512610][ T6866] RDX: 0000000000000001 RSI: 0000000000000008 RDI: 0000000000000008
[   58.520622][ T6866] RBP: ffff88809eaf9780 R08: 0000000000000000 R09: ffff88809eaf9c17
[   58.528784][ T6866] R10: ffffed1013d5f382 R11: 0000000000000000 R12: 0000000000000000
[   58.536761][ T6866] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000020000080
[   58.544822][ T6866] FS:  0000000000000000(0000) GS:ffff8880ae600000(0063) knlGS:0000000009cf4840
[   58.553865][ T6866] CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
[   58.560506][ T6866] CR2: 0000000020000080 CR3: 000000009fa0d000 CR4: 00000000001506f0
[   58.568550][ T6866] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   58.576530][ T6866] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   58.584610][ T6866] Kernel panic - not syncing: Fatal exception
[   58.591718][ T6866] Kernel Offset: disabled
[   58.596206][ T6866] Rebooting in 86400 seconds..