Warning: Permanently added '10.128.1.26' (ECDSA) to the list of known hosts. [ 39.530198] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 39.649632] audit: type=1400 audit(1572790266.538:36): avc: denied { map } for pid=6845 comm="syz-executor220" path="/root/syz-executor220679597" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 39.652273] [ 39.677583] ============================= [ 39.681711] WARNING: suspicious RCU usage [ 39.685835] 4.14.151 #0 Not tainted [ 39.689431] ----------------------------- [ 39.693550] ./include/linux/radix-tree.h:238 suspicious rcu_dereference_check() usage! [ 39.701580] [ 39.701580] other info that might help us debug this: [ 39.701580] [ 39.709696] [ 39.709696] rcu_scheduler_active = 2, debug_locks = 1 [ 39.716337] 2 locks held by syz-executor220/6845: [ 39.721151] #0: (&sb->s_type->i_mutex_key#12){+.+.}, at: [] shmem_add_seals+0x15e/0x1060 [ 39.731120] #1: (&(&mapping->tree_lock)->rlock){-...}, at: [] shmem_add_seals+0x334/0x1060 [ 39.741242] [ 39.741242] stack backtrace: [ 39.745716] CPU: 0 PID: 6845 Comm: syz-executor220 Not tainted 4.14.151 #0 [ 39.752702] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.762030] Call Trace: [ 39.764594] dump_stack+0x138/0x197 [ 39.768200] lockdep_rcu_suspicious+0x153/0x15d [ 39.772847] shmem_add_seals+0x9e0/0x1060 [ 39.776972] ? save_trace+0x290/0x290 [ 39.780752] ? shmem_put_link+0xe0/0xe0 [ 39.784699] ? vfs_write+0x25f/0x500 [ 39.788390] shmem_fcntl+0xf7/0x130 [ 39.791995] do_fcntl+0x190/0xe10 [ 39.795424] ? __sb_end_write+0xc1/0x100 [ 39.799458] ? f_getown+0xb0/0xb0 [ 39.802900] ? vfs_write+0x104/0x500 [ 39.806600] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 39.811503] ? selinux_file_fcntl+0x66/0x110 [ 39.815886] ? security_file_fcntl+0x89/0xb0 [ 39.820272] SyS_fcntl+0xd5/0x110 [ 39.823698] ? do_fcntl+0xe10/0xe10 [ 39.827300] do_syscall_64+0x1e8/0x640 [ 39.831163] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 39.835983] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 39.841151] RIP: 0033:0x4401b9 [ 39.844315] RSP: 002b:00007ffeb3400b68 EFLAGS: 00000246 ORIG_RAX: 000