[ 34.303253] audit: type=1800 audit(1581481624.187:33): pid=7207 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op="collect_data" cause="failed(directio)" comm="startpar" name="rc.local" dev="sda1" ino=2465 res=0 [ 34.325814] audit: type=1800 audit(1581481624.187:34): pid=7207 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op="collect_data" cause="failed(directio)" comm="startpar" name="rmnologin" dev="sda1" ino=2456 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 36.926232] random: sshd: uninitialized urandom read (32 bytes read) [ 37.243206] audit: type=1400 audit(1581481627.127:35): avc: denied { map } for pid=7379 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 [ 37.293230] random: sshd: uninitialized urandom read (32 bytes read) [ 37.992936] random: sshd: uninitialized urandom read (32 bytes read) [ 38.183837] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.209' (ECDSA) to the list of known hosts. [ 43.776537] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 43.893117] audit: type=1400 audit(1581481633.777:36): avc: denied { map } for pid=7391 comm="syz-executor160" path="/root/syz-executor160516488" 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 [ 43.977330] kasan: CONFIG_KASAN_INLINE enabled [ 43.977344] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 43.977354] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 43.977357] Modules linked in: [ 43.977367] CPU: 1 PID: 2734 Comm: kworker/1:2 Not tainted 4.14.170-syzkaller #0 [ 43.977371] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.977384] Workqueue: events console_callback [ 43.977390] task: ffff88809f4ba4c0 task.stack: ffff88809f4c8000 [ 43.977399] RIP: 0010:fbcon_cursor+0x114/0x6f0 [ 43.977402] RSP: 0018:ffff88809f4cfb48 EFLAGS: 00010203 [ 43.977408] RAX: dffffc0000000000 RBX: ffff8880a5caa540 RCX: ffff888097e519f4 [ 43.977412] RDX: 0000000020000001 RSI: 0000000000000001 RDI: ffff888097e51a60 [ 43.977416] RBP: ffff88809f4cfb88 R08: ffff8882192f8a30 R09: ffffed1043256094 [ 43.977421] R10: ffffed1043256093 R11: ffff8882192b049f R12: ffff888097e516c0 [ 43.977425] R13: ffff8882192f85c0 R14: 0000000000000001 R15: 000000010000000c [ 43.977430] FS: 0000000000000000(0000) GS:ffff8880aed00000(0000) knlGS:0000000000000000 [ 43.977434] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.977438] CR2: 00007fdc7c5cb000 CR3: 00000000a937f000 CR4: 00000000001406e0 [ 43.977445] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 43.977449] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 43.977451] Call Trace: [ 43.977461] ? add_softcursor+0x173/0x2e0 [ 43.977475] ? fbcon_redraw.isra.0+0x440/0x440 [ 43.977484] set_cursor+0x1bd/0x240 [ 43.977492] redraw_screen+0x596/0x7c0 [ 43.977500] ? con_flush_chars+0x90/0x90 [ 43.977506] ? get_color+0x1bf/0x3b0 [ 43.977514] complete_change_console+0xfe/0x360 [ 43.977520] change_console+0x161/0x270 [ 43.977527] console_callback+0x337/0x390 [ 43.977533] ? poke_blanked_console+0x1d0/0x1d0 [ 43.977540] ? rcu_lockdep_current_cpu_online+0xf2/0x140 [ 43.977551] process_one_work+0x863/0x1600 [ 43.977561] ? pwq_dec_nr_in_flight+0x2e0/0x2e0 [ 43.977572] worker_thread+0x5d9/0x1050 [ 43.977584] kthread+0x319/0x430 [ 43.977590] ? process_one_work+0x1600/0x1600 [ 43.977596] ? kthread_create_on_node+0xd0/0xd0 [ 43.977605] ret_from_fork+0x24/0x30 [ 43.977613] Code: df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 83 05 00 00 4d 8b bc 24 a0 03 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48 c1 ea 03 <0f> b6 14 02 4c 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 [ 43.977740] RIP: fbcon_cursor+0x114/0x6f0 RSP: ffff88809f4cfb48 [ 43.977748] ---[ end trace 391cac51ffd925ae ]--- [ 43.977752] Kernel panic - not syncing: Fatal exception [ 43.979554] Kernel Offset: disabled [ 44.230495] Rebooting in 86400 seconds..