[  OK  ] Reached target Graphical Interface.
         Starting Update UTMP about System Runlevel Changes...
         Starting Load/Save RF Kill Switch Status...
[  OK  ] Started Load/Save RF Kill Switch Status.
[  OK  ] Started Update UTMP about System Runlevel Changes.

Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.0.185' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   39.837092] ------------[ cut here ]------------
[   39.841938] WARNING: CPU: 1 PID: 7965 at drivers/dma-buf/dma-buf.c:1039 dma_buf_vunmap+0x181/0x1f0
[   39.851010] Kernel panic - not syncing: panic_on_warn set ...
[   39.851010] 
[   39.858366] CPU: 1 PID: 7965 Comm: syz-executor799 Not tainted 4.14.292-syzkaller #0
[   39.866233] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
[   39.875559] Call Trace:
[   39.878125]  dump_stack+0x1b2/0x281
[   39.881730]  panic+0x1f9/0x42d
[   39.884899]  ? add_taint.cold+0x16/0x16
[   39.888854]  ? dma_buf_vunmap+0x181/0x1f0
[   39.892979]  ? dma_buf_vunmap+0x181/0x1f0
[   39.897101]  __warn.cold+0x20/0x44
[   39.900638]  ? ist_end_non_atomic+0x10/0x10
[   39.904950]  ? dma_buf_vunmap+0x181/0x1f0
[   39.909084]  report_bug+0x208/0x250
[   39.912689]  do_error_trap+0x195/0x2d0
[   39.916552]  ? math_error+0x2d0/0x2d0
[   39.920329]  ? trace_hardirqs_on+0x10/0x10
[   39.924553]  ? lock_acquire+0x170/0x3f0
[   39.928502]  ? lock_downgrade+0x740/0x740
[   39.932630]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   39.937450]  invalid_op+0x1b/0x40
[   39.940884] RIP: 0010:dma_buf_vunmap+0x181/0x1f0
[   39.945613] RSP: 0018:ffff8880918e7b20 EFLAGS: 00010297
[   39.950954] RAX: ffff8880a5fe4240 RBX: 0000000000000000 RCX: 0000000000000000
[   39.958200] RDX: 0000000000000000 RSI: ffffc90005c26000 RDI: 0000000000000000
[   39.965444] RBP: ffffc90005c26000 R08: 0000000000000000 R09: 000000000004054a
[   39.972688] R10: ffff8880a5fe4af0 R11: ffff8880a5fe4240 R12: ffffc90005c26000
[   39.979932] R13: ffff8880ab2e15a8 R14: ffff8880b364db80 R15: 0000000000000000
[   39.987205]  vb2_vmalloc_detach_dmabuf+0x57/0x80
[   39.991937]  ? vb2_vmalloc_map_dmabuf+0x90/0x90
[   39.996592]  __vb2_plane_dmabuf_put+0x10b/0x2e0
[   40.001237]  __vb2_queue_free+0x5e4/0x7a0
[   40.005362]  vb2_core_queue_release+0x5b/0x70
[   40.009835]  _vb2_fop_release+0x1c1/0x280
[   40.013960]  vivid_fop_release+0x17d/0x6c0
[   40.018171]  ? fcntl_setlk+0xdb0/0xdb0
[   40.022033]  ? vivid_probe+0x390/0x390
[   40.025911]  ? dev_debug_store+0xe0/0xe0
[   40.029947]  v4l2_release+0xf4/0x190
[   40.033638]  __fput+0x25f/0x7a0
[   40.036899]  task_work_run+0x11f/0x190
[   40.040764]  do_exit+0xa44/0x2850
[   40.044196]  ? __do_page_fault+0x571/0xad0
[   40.048410]  ? mm_update_next_owner+0x5b0/0x5b0
[   40.053056]  ? lock_downgrade+0x740/0x740
[   40.057200]  do_group_exit+0x100/0x2e0
[   40.061074]  SyS_exit_group+0x19/0x20
[   40.064851]  ? do_group_exit+0x2e0/0x2e0
[   40.068888]  do_syscall_64+0x1d5/0x640
[   40.072754]  entry_SYSCALL_64_after_hwframe+0x46/0xbb
[   40.077920] RIP: 0033:0x7fd3b2ab8409
[   40.081607] RSP: 002b:00007fff8765bc58 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   40.089295] RAX: ffffffffffffffda RBX: 00007fd3b2b2c270 RCX: 00007fd3b2ab8409
[   40.096554] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000
[   40.103805] RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 0000000000000000
[   40.111049] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd3b2b2c270
[   40.118295] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001
[   40.125964] Kernel Offset: disabled
[   40.129620] Rebooting in 86400 seconds..