[  OK  ] Reached target Login Prompts.
[  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.

Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.1.53' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   67.757787][ T6540] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN
[   67.769643][ T6540] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
[   67.778045][ T6540] CPU: 1 PID: 6540 Comm: syz-executor323 Not tainted 5.14.0-rc7-next-20210824-syzkaller #0
[   67.788056][ T6540] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   67.798097][ T6540] RIP: 0010:strncpy+0x32/0xb0
[   67.802820][ T6540] Code: 54 55 53 48 83 ec 08 48 85 d2 74 5c 4c 8d 2c 17 48 89 fb 49 bc 00 00 00 00 00 fc ff df 48 89 f0 48 89 f2 48 c1 e8 03 83 e2 07 <42> 0f b6 04 20 38 d0 7f 04 84 c0 75 41 48 89 d8 48 89 da 0f b6 2e
[   67.822419][ T6540] RSP: 0018:ffffc90002d2fb98 EFLAGS: 00010246
[   67.828468][ T6540] RAX: 0000000000000000 RBX: ffffc90002d2fc70 RCX: 0000000000000000
[   67.836857][ T6540] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc90002d2fc70
[   67.844812][ T6540] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffc90002d2fcb7
[   67.852893][ T6540] R10: ffffffff817c66f5 R11: 0000000000000000 R12: dffffc0000000000
[   67.860859][ T6540] R13: ffffc90002d2fc90 R14: ffffc90002d2fc70 R15: ffffc90002d2fc94
[   67.868908][ T6540] FS:  0000000001ff3300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
[   67.877825][ T6540] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   67.884393][ T6540] CR2: 00007f5c7fb696c0 CR3: 000000001ae25000 CR4: 00000000001506e0
[   67.892352][ T6540] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   67.900312][ T6540] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   67.908269][ T6540] Call Trace:
[   67.911535][ T6540]  do_blk_trace_setup+0x113/0xcd0
[   67.916558][ T6540]  ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70
[   67.922792][ T6540]  __blk_trace_setup+0xca/0x180
[   67.927632][ T6540]  ? do_blk_trace_setup+0xcd0/0xcd0
[   67.932823][ T6540]  ? __sanitizer_cov_trace_switch+0x63/0xf0
[   67.938699][ T6540]  blk_trace_setup+0x43/0x60
[   67.943275][ T6540]  sg_ioctl+0x252/0x2760
[   67.947533][ T6540]  ? sg_write+0x110/0x110
[   67.951963][ T6540]  ? simplefb_probe.cold+0x9c/0x668
[   67.957172][ T6540]  ? lock_downgrade+0x6e0/0x6e0
[   67.962021][ T6540]  ? lock_downgrade+0x6e0/0x6e0
[   67.966866][ T6540]  ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70
[   67.973170][ T6540]  ? sg_write+0x110/0x110
[   67.977533][ T6540]  __x64_sys_ioctl+0x193/0x200
[   67.982339][ T6540]  do_syscall_64+0x35/0xb0
[   67.986832][ T6540]  entry_SYSCALL_64_after_hwframe+0x44/0xae
[   67.992712][ T6540] RIP: 0033:0x4434b9
[   67.996592][ T6540] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 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
[   68.016186][ T6540] RSP: 002b:00007ffd335501e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   68.024697][ T6540] RAX: ffffffffffffffda RBX: 00000000004004a0 RCX: 00000000004434b9
[   68.032651][ T6540] RDX: 0000000020000100 RSI: 00000000c0481273 RDI: 0000000000000004
[   68.040713][ T6540] RBP: 0000000000403060 R08: 00000000004004a0 R09: 00000000004004a0
[   68.048685][ T6540] R10: 002367732f766564 R11: 0000000000000246 R12: 00000000004030f0
[   68.056638][ T6540] R13: 0000000000000000 R14: 00000000004b1018 R15: 00000000004004a0
[   68.064599][ T6540] Modules linked in:
[   68.069856][ T6540] ---[ end trace c8de7dc978626109 ]---
[   68.075334][ T6540] RIP: 0010:strncpy+0x32/0xb0
[   68.080473][ T6540] Code: 54 55 53 48 83 ec 08 48 85 d2 74 5c 4c 8d 2c 17 48 89 fb 49 bc 00 00 00 00 00 fc ff df 48 89 f0 48 89 f2 48 c1 e8 03 83 e2 07 <42> 0f b6 04 20 38 d0 7f 04 84 c0 75 41 48 89 d8 48 89 da 0f b6 2e
[   68.080496][ T6540] RSP: 0018:ffffc90002d2fb98 EFLAGS: 00010246
[   68.080514][ T6540] RAX: 0000000000000000 RBX: ffffc90002d2fc70 RCX: 0000000000000000
[   68.080528][ T6540] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc90002d2fc70
[   68.080541][ T6540] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffc90002d2fcb7
[   68.080554][ T6540] R10: ffffffff817c66f5 R11: 0000000000000000 R12: dffffc0000000000
[   68.080568][ T6540] R13: ffffc90002d2fc90 R14: ffffc90002d2fc70 R15: ffffc90002d2fc94
[   68.080582][ T6540] FS:  0000000001ff3300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
[   68.080604][ T6540] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   68.162030][ T6540] CR2: 00007f8125f40018 CR3: 000000001ae25000 CR4: 00000000001506e0
[   68.170636][ T6540] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   68.179065][ T6540] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   68.187760][ T6540] Kernel panic - not syncing: Fatal exception
[   68.195064][ T6540] Kernel Offset: disabled
[   68.199383][ T6540] Rebooting in 86400 seconds..