Warning: Permanently added '10.128.0.88' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   47.451568] audit: type=1400 audit(1572608579.955:36): avc:  denied  { map } for  pid=7545 comm="syz-executor250" path="/root/syz-executor250897130" 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
[   47.454655] 
[   47.480062] =============================
[   47.484392] WARNING: suspicious RCU usage
[   47.488608] 4.19.81 #0 Not tainted
[   47.492125] -----------------------------
[   47.496373] include/linux/radix-tree.h:241 suspicious rcu_dereference_check() usage!
[   47.504230] 
[   47.504230] other info that might help us debug this:
[   47.504230] 
[   47.512364] 
[   47.512364] rcu_scheduler_active = 2, debug_locks = 1
[   47.519025] 2 locks held by syz-executor250/7545:
[   47.523849]  #0: 000000006b2feabc (&sb->s_type->i_mutex_key#12){+.+.}, at: memfd_fcntl+0x235/0x1750
[   47.533168]  #1: 000000006f2ba48d (&(&(&mapping->i_pages)->xa_lock)->rlock){-...}, at: memfd_fcntl+0x4bc/0x1750
[   47.543544] 
[   47.543544] stack backtrace:
[   47.548046] CPU: 1 PID: 7545 Comm: syz-executor250 Not tainted 4.19.81 #0
[   47.555078] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   47.564512] Call Trace:
[   47.567098]  dump_stack+0x172/0x1f0
[   47.570818]  lockdep_rcu_suspicious+0x153/0x15d
[   47.575475]  memfd_fcntl+0xfdf/0x1750
[   47.579259]  ? vfs_write+0x2f0/0x560
[   47.582956]  ? find_held_lock+0x35/0x130
[   47.586998]  ? vfs_write+0x2f0/0x560
[   47.590698]  ? memfd_file_seals_ptr+0x160/0x160
[   47.595355]  ? check_preemption_disabled+0x48/0x290
[   47.600363]  do_fcntl+0x200/0x1020
[   47.604063]  ? f_getown+0xc0/0xc0
[   47.607502]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   47.613034]  ? ksys_write+0x1f1/0x2d0
[   47.616824]  ? __sanitizer_cov_trace_switch+0x49/0x80
[   47.622002]  ? selinux_file_fcntl+0x74/0x140
[   47.626393]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   47.631930]  ? security_file_fcntl+0x8d/0xc0
[   47.636327]  __x64_sys_fcntl+0x16d/0x1e0
[   47.640378]  do_syscall_64+0xfd/0x620
[   47.644169]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   47.649364] RIP: 0033:0x440189
[   47.652563] 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
[   47.671551] RSP: 002b:00007ffeeb43ee88 EFLAGS: 00000246 ORIG_RAX: 0000000000000048
[   47.679292] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440189
[   47.686567] RDX: 0000000000000008 RSI: 0000000000000409 RDI: 0000000000000003
[   47.694003] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8
[   47.701321] R1