Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.0.33' (ECDSA) to the list of known hosts.
syzkaller login: [   32.668119] divide error: 0000 [#1] PREEMPT SMP KASAN
[   32.673346] CPU: 1 PID: 8098 Comm: syz-executor317 Not tainted 4.19.204-syzkaller #0
[   32.681206] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   32.690662] RIP: 0010:snd_pcm_lib_ioctl+0x450/0x9a0
[   32.695658] Code: a0 17 fb 4c 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 00 05 00 00 49 8b 84 24 18 02 00 00 89 db 31 d2 <48> f7 f3 49 89 84 24 18 02 00 00 45 31 ed e9 de fb ff ff e8 88 a0
[   32.714537] RSP: 0018:ffff888092bf7ba8 EFLAGS: 00010246
[   32.719878] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff864af1bf
[   32.727125] RDX: 0000000000000000 RSI: ffffffff864af1c9 RDI: 0000000000000007
[   32.734370] RBP: 000000000000000f R08: 0000000000000000 R09: 0000000000000000
[   32.741618] R10: 0000000000000007 R11: 0000000000000000 R12: ffff8880b32b0000
[   32.748864] R13: ffff8880b32b0218 R14: 0000000000000000 R15: 0000000000000000
[   32.756114] FS:  00000000016c6300(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
[   32.764314] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   32.770173] CR2: 0000000020001090 CR3: 00000000b507e000 CR4: 00000000001406e0
[   32.777424] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   32.784673] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   32.791918] Call Trace:
[   32.794492]  fixup_unreferenced_params+0x5c5/0x8a0
[   32.799399]  snd_pcm_common_ioctl+0x144d/0x29a0
[   32.804133]  ? mark_held_locks+0xf0/0xf0
[   32.808204]  ? mark_held_locks+0xf0/0xf0
[   32.812245]  ? snd_pcm_status_user+0x180/0x180
[   32.816807]  ? debug_check_no_obj_freed+0x201/0x490
[   32.821803]  ? lock_downgrade+0x720/0x720
[   32.825930]  snd_pcm_ioctl+0x7e/0xb0
[   32.829623]  ? snd_pcm_common_ioctl+0x29a0/0x29a0
[   32.834463]  do_vfs_ioctl+0xcdb/0x12e0
[   32.838331]  ? _raw_spin_unlock_irqrestore+0x66/0xe0
[   32.843413]  ? debug_check_no_obj_freed+0x201/0x490
[   32.848405]  ? ioctl_preallocate+0x200/0x200
[   32.852792]  ? putname+0xe1/0x120
[   32.856225]  ? putname+0xe1/0x120
[   32.859656]  ? rcu_read_lock_sched_held+0x16c/0x1d0
[   32.864679]  ? kmem_cache_free+0x226/0x260
[   32.868892]  ? putname+0xe1/0x120
[   32.872342]  ? do_sys_open+0x2bf/0x520
[   32.876224]  ? filp_open+0x70/0x70
[   32.879758]  ksys_ioctl+0x9b/0xc0
[   32.883193]  __x64_sys_ioctl+0x6f/0xb0
[   32.887059]  ? lockdep_hardirqs_on+0x3a8/0x5c0
[   32.891618]  do_syscall_64+0xf9/0x620
[   32.895399]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   32.900570] RIP: 0033:0x443649
[   32.903740] 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
[   32.922626] RSP: 002b:00007ffec06b0638 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[   32.930409] RAX: ffffffffffffffda RBX: 00000000004004a0 RCX: 0000000000443649
[   32.937752] RDX: 00000000200010c0 RSI: 00000000c1004110 RDI: 0000000000000003
[   32.945002] RBP: 00000000004031f0 R08: 0000000000000000 R09: 00000000004004a0
[   32.952249] R10: 000000000000000f R11: 0000000000000246 R12: 0000000000403280
[   32.959496] R13: 0000000000000000 R14: 00000000004b1018 R15: 00000000004004a0
executing program
[   32.966745] Modules linked in:
[   32.975534] ---[ end trace 272791c8b61acd22 ]---
[   32.980323] RIP: 0010:snd_pcm_lib_ioctl+0x450/0x9a0
[   32.985394] Code: a0 17 fb 4c 89 ea 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 00 05 00 00 49 8b 84 24 18 02 00 00 89 db 31 d2 <48> f7 f3 49 89 84 24 18 02 00 00 45 31 ed e9 de fb ff ff e8 88 a0
[   33.004379] RSP: 0018:ffff888092bf7ba8 EFLAGS: 00010246
[   33.009773] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff864af1bf
[   33.017068] RDX: 0000000000000000 RSI: ffffffff864af1c9 RDI: 0000000000000007
[   33.024329] RBP: 000000000000000f R08: 0000000000000000 R09: 0000000000000000
[   33.031633] R10: 0000000000000007 R11: 0000000000000000 R12: ffff8880b32b0000
[   33.038936] R13: ffff8880b32b0218 R14: 0000000000000000 R15: 0000000000000000
[   33.046260] FS:  00000000016c6300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
[   33.054478] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   33.060424] CR2: 00007f9c6003a008 CR3: 00000000b507e000 CR4: 00000000001406f0
[   33.067720] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   33.074982] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   33.082264] Kernel panic - not syncing: Fatal exception
[   33.088902] Kernel Offset: disabled
[   33.092534] Rebooting in 86400 seconds..