Warning: Permanently added '10.128.0.67' (ECDSA) to the list of known hosts.
executing program
[   48.209283][ T7736] ------------[ cut here ]------------
[   48.214875][ T7736] percpu_ref_kill_and_confirm called more than once on io_ring_ctx_ref_free!
[   48.215108][ T7736] WARNING: CPU: 1 PID: 7736 at lib/percpu-refcount.c:335 percpu_ref_kill_and_confirm+0x341/0x3b0
[   48.234308][ T7736] Kernel panic - not syncing: panic_on_warn set ...
[   48.240870][ T7736] CPU: 1 PID: 7736 Comm: syz-executor901 Not tainted 5.1.0-rc5+ #78
[   48.248817][ T7736] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   48.258846][ T7736] Call Trace:
[   48.262121][ T7736]  dump_stack+0x172/0x1f0
[   48.266437][ T7736]  ? percpu_ref_kill_and_confirm+0x340/0x3b0
[   48.272410][ T7736]  panic+0x2cb/0x65c
[   48.276306][ T7736]  ? __warn_printk+0xf3/0xf3
[   48.280880][ T7736]  ? percpu_ref_kill_and_confirm+0x341/0x3b0
[   48.286836][ T7736]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   48.293069][ T7736]  ? __warn.cold+0x5/0x45
[   48.297377][ T7736]  ? __warn+0xe8/0x1d0
[   48.301436][ T7736]  ? percpu_ref_kill_and_confirm+0x341/0x3b0
[   48.307412][ T7736]  __warn.cold+0x20/0x45
[   48.311636][ T7736]  ? vprintk_emit+0x1ce/0x6d0
[   48.316310][ T7736]  ? percpu_ref_kill_and_confirm+0x341/0x3b0
[   48.322296][ T7736]  report_bug+0x263/0x2b0
[   48.326608][ T7736]  do_error_trap+0x11b/0x200
[   48.331184][ T7736]  do_invalid_op+0x37/0x50
[   48.335582][ T7736]  ? percpu_ref_kill_and_confirm+0x341/0x3b0
[   48.341540][ T7736]  invalid_op+0x14/0x20
[   48.345673][ T7736] RIP: 0010:percpu_ref_kill_and_confirm+0x341/0x3b0
[   48.352234][ T7736] Code: 42 e0 2a 06 01 48 89 fa 48 c1 ea 03 80 3c 02 00 75 76 49 8b 54 24 10 48 c7 c6 a0 71 a1 87 48 c7 c7 40 71 a1 87 e8 ad 92 13 fe <0f> 0b 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 80 3c 02
[   48.371816][ T7736] RSP: 0018:ffff88809b98fcf0 EFLAGS: 00010082
[   48.377858][ T7736] RAX: 0000000000000000 RBX: 0000607f5142dde3 RCX: 0000000000000000
[   48.385804][ T7736] RDX: 0000000000000000 RSI: ffffffff815afcf6 RDI: ffffed1013731f90
[   48.393838][ T7736] RBP: ffff88809b98fd20 R08: ffff888096772700 R09: fffffbfff1133639
[   48.401798][ T7736] R10: fffffbfff1133638 R11: ffffffff8899b1c3 R12: ffff8880955f2540
[   48.409744][ T7736] R13: ffff8880955f2548 R14: 0000000000000286 R15: 0000000000000000
[   48.417710][ T7736]  ? vprintk_func+0x86/0x189
[   48.422286][ T7736]  __io_uring_register+0xa7/0x1fe0
[   48.427374][ T7736]  ? __mutex_lock+0x3cd/0x1310
[   48.432115][ T7736]  ? __x64_sys_io_uring_register+0x182/0x1f0
[   48.438074][ T7736]  ? mutex_trylock+0x1e0/0x1e0
[   48.442817][ T7736]  ? io_sq_wq_submit_work+0x10f0/0x10f0
[   48.448344][ T7736]  ? kasan_check_write+0x14/0x20
[   48.453282][ T7736]  __x64_sys_io_uring_register+0x193/0x1f0
[   48.459078][ T7736]  do_syscall_64+0x103/0x610
[   48.463663][ T7736]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   48.469529][ T7736] RIP: 0033:0x4467c9
[   48.473396][ T7736] Code: e8 5c b3 02 00 48 83 c4 18 c3 0f 1f 80 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 0f 83 0b 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00
[   48.492979][ T7736] RSP: 002b:00007f3390caddb8 EFLAGS: 00000246 ORIG_RAX: 00000000000001ab
[   48.501451][ T7736] RAX: ffffffffffffffda RBX: 00000000006dbc38 RCX: 00000000004467c9
[   48.509397][ T7736] RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000003
[   48.517344][ T7736] RBP: 00000000006dbc30 R08: 00007f3390cae700 R09: 0000000000000000
[   48.525293][ T7736] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc3c
[   48.533240][ T7736] R13: 00007ffe52d269cf R14: 00007f3390cae9c0 R15: 20c49ba5e353f7cf
[   48.542100][ T7736] Kernel Offset: disabled
[   48.546496][ T7736] Rebooting in 86400 seconds..