[?25l[?1c7[ ok 8[?25h[?0c.
Starting mcstransd: 
[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[   11.023295] random: crng init done
[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

Warning: Permanently added '10.128.10.31' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   19.666898] 
[   19.667301] ===============================
[   19.667982] [ INFO: suspicious RCU usage. ]
[   19.668839] 4.9.202+ #0 Not tainted
[   19.669375] -------------------------------
[   19.669977] include/linux/radix-tree.h:199 suspicious rcu_dereference_check() usage!
[   19.671140] 
[   19.671140] other info that might help us debug this:
[   19.671140] 
[   19.672298] 
[   19.672298] rcu_scheduler_active = 2, debug_locks = 0
[   19.673235] 2 locks held by syz-executor681/2046:
[   19.673924]  #0:  (&sb->s_type->i_mutex_key#10){+.+.+.}, at: [<00000000861d9546>] shmem_add_seals+0x166/0x1020
[   19.675585]  #1:  (&(&mapping->tree_lock)->rlock){..-...}, at: [<000000004ebe6aa1>] shmem_add_seals+0x342/0x1020
[   19.677190] 
[   19.677190] stack backtrace:
[   19.678426] CPU: 0 PID: 2046 Comm: syz-executor681 Not tainted 4.9.202+ #0
[   19.679587]  ffff8801d10bfca0 ffffffff81b55d2b ffff8801c4860b28 0000000000000000
[   19.680980]  0000000000000002 00000000000000c7 ffff8801d23c5f00 ffff8801d10bfcd0
[   19.682400]  ffffffff81406867 ffffea00073c9540 dffffc0000000000 ffff8801d10bfd78
[   19.683885] Call Trace:
[   19.684323]  [<000000004a3ab2bb>] dump_stack+0xcb/0x130
[   19.685113]  [<000000000012a340>] lockdep_rcu_suspicious.cold+0x10a/0x149
[   19.686045]  [<000000005977f61d>] shmem_add_seals+0xa44/0x1020
[   19.686966]  [<000000005d42a923>] ? __vfs_read+0x550/0x550
[   19.692376]  [<0000000051ee6811>] ? shmem_file_llseek+0x250/0x250
[   19.698598]  [<00000000337749b5>] ? vfs_write+0x366/0x520
[   19.704110]  [<00000000ad1f04e8>] ? debug_lockdep_rcu_enabled+0x71/0xa0
[   19.710840]  [<000000003f2f794b>] ? selinux_file_fcntl+0x6c/0x120
[