Warning: Permanently added '10.128.0.38' (ECDSA) to the list of known hosts.
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
executing program
syzkaller login: [  551.541067][ T2684] ------------[ cut here ]------------
[  551.547288][ T2684] refcount_t: underflow; use-after-free.
[  551.566097][ T2684] WARNING: CPU: 0 PID: 2684 at lib/refcount.c:28 refcount_warn_saturate+0x15b/0x1a0
[  551.594251][ T2684] Kernel panic - not syncing: panic_on_warn set ...
[  551.600845][ T2684] CPU: 0 PID: 2684 Comm: kworker/0:2 Not tainted 5.8.0-syzkaller #0
[  551.608807][ T2684] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  551.618962][ T2684] Workqueue: events do_enable_set
[  551.623972][ T2684] Call Trace:
[  551.627311][ T2684]  dump_stack+0x1f0/0x31e
[  551.631739][ T2684]  panic+0x264/0x7a0
[  551.635651][ T2684]  ? __warn+0x102/0x250
[  551.639797][ T2684]  ? refcount_warn_saturate+0x15b/0x1a0
[  551.645333][ T2684]  ? refcount_warn_saturate+0x15b/0x1a0
[  551.650869][ T2684]  __warn+0x227/0x250
[  551.654841][ T2684]  ? refcount_warn_saturate+0x15b/0x1a0
[  551.660377][ T2684]  report_bug+0x1b1/0x2e0
[  551.664823][ T2684]  handle_bug+0x42/0x80
[  551.668972][ T2684]  exc_invalid_op+0x16/0x40
[  551.673503][ T2684]  asm_exc_invalid_op+0x12/0x20
[  551.678347][ T2684] RIP: 0010:refcount_warn_saturate+0x15b/0x1a0
[  551.684488][ T2684] Code: c7 8a db 14 89 31 c0 e8 a3 89 a9 fd 0f 0b eb 85 e8 ba e3 d7 fd c6 05 ea 7b ec 05 01 48 c7 c7 b6 db 14 89 31 c0 e8 85 89 a9 fd <0f> 0b e9 64 ff ff ff e8 99 e3 d7 fd c6 05 ca 7b ec 05 01 48 c7 c7
[  551.704169][ T2684] RSP: 0018:ffffc90008767c48 EFLAGS: 00010246
[  551.710226][ T2684] RAX: 622f7b4761e9f100 RBX: 0000000000000003 RCX: ffff88809ef70540
[  551.718187][ T2684] RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
[  551.726146][ T2684] RBP: 0000000000000003 R08: ffffffff815dffc9 R09: ffffed1015d062c0
[  551.734107][ T2684] R10: ffffed1015d062c0 R11: 0000000000000000 R12: dffffc0000000000
[  551.742069][ T2684] R13: ffff88809eeb3e18 R14: dffffc0000000000 R15: ffff8880ae8350c0
[  551.750130][ T2684]  ? vprintk_emit+0x339/0x3c0
[  551.754807][ T2684]  ? refcount_warn_saturate+0x15b/0x1a0
[  551.760345][ T2684]  do_enable_set+0x66e/0x900
[  551.764925][ T2684]  ? lock_is_held_type+0xb3/0xe0
[  551.769911][ T2684]  process_one_work+0x789/0xfc0
[  551.774771][ T2684]  worker_thread+0xaa4/0x1460
[  551.779447][ T2684]  ? _raw_spin_unlock_irqrestore+0x6f/0xd0
[  551.785287][ T2684]  kthread+0x37e/0x3a0
[  551.789352][ T2684]  ? rcu_lock_release+0x20/0x20
[  551.794193][ T2684]  ? kthread_blkcg+0xd0/0xd0
[  551.798839][ T2684]  ret_from_fork+0x1f/0x30
[  551.804654][ T2684] Kernel Offset: disabled
[  551.809010][ T2684] Rebooting in 86400 seconds..