Warning: Permanently added '10.128.0.176' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   46.792744] kauditd_printk_skb: 2 callbacks suppressed
[   46.792758] audit: type=1400 audit(1572415094.956:36): avc:  denied  { map } for  pid=7579 comm="syz-executor155" path="/root/syz-executor155185633" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1
[   46.796304] 
[   46.826048] =============================
[   46.830285] WARNING: suspicious RCU usage
[   46.834428] 4.19.81 #0 Not tainted
[   46.838002] -----------------------------
[   46.842133] include/linux/radix-tree.h:241 suspicious rcu_dereference_check() usage!
[   46.849992] 
[   46.849992] other info that might help us debug this:
[   46.849992] 
[   46.858174] 
[   46.858174] rcu_scheduler_active = 2, debug_locks = 1
[   46.864839] 2 locks held by syz-executor155/7579:
[   46.869664]  #0: 00000000069978fe (&sb->s_type->i_mutex_key#12){+.+.}, at: memfd_fcntl+0x235/0x1750
[   46.878865]  #1: 000000000a2840ba (&(&(&mapping->i_pages)->xa_lock)->rlock){-.-.}, at: memfd_fcntl+0x4bc/0x1750
[   46.889321] 
[   46.889321] stack backtrace:
[   46.893819] CPU: 0 PID: 7579 Comm: syz-executor155 Not tainted 4.19.81 #0
[   46.900739] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   46.910147] Call Trace:
[   46.912731]  dump_stack+0x172/0x1f0
[   46.916350]  lockdep_rcu_suspicious+0x153/0x15d
[   46.921007]  memfd_fcntl+0xfdf/0x1750
[   46.924816]  ? vfs_write+0x2f0/0x560
[   46.928781]  ? find_held_lock+0x35/0x130
[   46.932893]  ? vfs_write+0x2f0/0x560
[   46.936602]  ? memfd_file_seals_ptr+0x160/0x160
[   46.941266]  ? check_preemption_disabled+0x48/0x290
[   46.946290]  do_fcntl+0x200/0x1020
[   46.949818]  ? f_getown+0xc0/0xc0
[   46.953257]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   46.958791]  ? ksys_write+0x1f1/0x2d0
[   46.962575]  ? __sanitizer_cov_trace_switch+0x49/0x80
[   46.967750]  ? selinux_file_fcntl+0x74/0x140
[   46.972158]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   46.977707]  ? security_file_fcntl+0x8d/0xc0
[   46.982112]  __x64_sys_fcntl+0x16d/0x1e0
[   46.986167]  do_syscall_64+0xfd/0x620
[   46.989957]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   46.995167] RIP: 0033:0x4401b9
[   46.998486] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00
[   47.017377] RSP: 002b:00007ffe2a3b6f88 EFLAGS: 00000246 ORIG_RAX: 0000000000000048
[   47.025076] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004401b9
[   47.032374] RDX: 0000000000000009 RSI: 0000000000000409 RDI: 0000000000000003
[   47.039660] RBP: 00000000006ca018 R08: 00000000