[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [ 100.956625][ T27] audit: type=1400 audit(1581729196.603:37): avc: denied { watch } for pid=10707 comm="restorecond" path="/root/.ssh" dev="sda1" ino=16179 scontext=system_u:system_r:kernel_t:s0 tcontext=unconfined_u:object_r:ssh_home_t:s0 tclass=dir permissive=1 [....] 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 syzkaller login: [ 105.126714][ T27] kauditd_printk_skb: 3 callbacks suppressed [ 105.126728][ T27] audit: type=1400 audit(1581729200.773:41): avc: denied { map } for pid=10797 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 Warning: Permanently added '10.128.1.55' (ECDSA) to the list of known hosts. executing program [ 112.008793][ T27] audit: type=1400 audit(1581729207.663:42): avc: denied { map } for pid=10809 comm="syz-executor458" path="/root/syz-executor458062335" 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 [ 112.093335][ T2871] general protection fault, probably for non-canonical address 0xdffffc0020000001: 0000 [#1] PREEMPT SMP KASAN [ 112.093346][ T2871] KASAN: probably user-memory-access in range [0x0000000100000008-0x000000010000000f] [ 112.093359][ T2871] CPU: 0 PID: 2871 Comm: kworker/0:81 Not tainted 5.6.0-rc1-syzkaller #0 [ 112.093366][ T2871] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 112.093383][ T2871] Workqueue: events console_callback [ 112.093402][ T2871] RIP: 0010:fbcon_cursor+0x114/0x660 [ 112.093415][ T2871] Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 e6 04 00 00 4d 8b b4 24 a0 03 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <0f> b6 14 02 4c 89 f0 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 ba [ 112.093421][ T2871] RSP: 0018:ffffc90008fe7af0 EFLAGS: 00010203 [ 112.093431][ T2871] RAX: dffffc0000000000 RBX: ffff8880a3927800 RCX: ffffffff83f31c60 [ 112.093439][ T2871] RDX: 0000000020000001 RSI: ffffffff83c5b4ec RDI: ffff8880a80f13a0 [ 112.093447][ T2871] RBP: ffffc90008fe7b30 R08: ffff88809ee88280 R09: ffffed1014725374 [ 112.093454][ T2871] R10: ffffed1014725373 R11: ffff8880a3929b9f R12: ffff8880a80f1000 [ 112.093462][ T2871] R13: ffff8880a39b5000 R14: 000000010000000c R15: ffff8880a39b5468 [ 112.093472][ T2871] FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 112.093480][ T2871] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 112.093487][ T2871] CR2: 0000000000455300 CR3: 00000000938e8000 CR4: 00000000001406f0 [ 112.093498][ T2871] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 112.093505][ T2871] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 112.093508][ T2871] Call Trace: [ 112.093523][ T2871] ? add_softcursor+0x295/0x2f0 [ 112.093539][ T2871] set_cursor+0x1fb/0x280 [ 112.093553][ T2871] redraw_screen+0x4e1/0x7d0 [ 112.093568][ T2871] ? respond_string+0x2c0/0x2c0 [ 112.093583][ T2871] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 112.093596][ T2871] ? get_color+0x225/0x430 [ 112.093614][ T2871] complete_change_console+0x105/0x3a0 [ 112.093632][ T2871] change_console+0x19b/0x2c0 [ 112.093646][ T2871] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 112.093661][ T2871] console_callback+0x3a1/0x400 [ 112.093673][ T2871] ? poke_blanked_console+0x270/0x270 [ 112.093686][ T2871] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 112.093699][ T2871] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 112.093712][ T2871] ? trace_hardirqs_on+0x67/0x240 [ 112.093729][ T2871] process_one_work+0xa05/0x17a0 [ 112.093741][ T2871] ? mark_held_locks+0xf0/0xf0 [ 112.093761][ T2871] ? pwq_dec_nr_in_flight+0x320/0x320 [ 112.093770][ T2871] ? lock_acquire+0x190/0x410 [ 112.093795][ T2871] worker_thread+0x98/0xe40 [ 112.093818][ T2871] kthread+0x361/0x430 [ 112.093831][ T2871] ? process_one_work+0x17a0/0x17a0 [ 112.093843][ T2871] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 112.093860][ T2871] ret_from_fork+0x24/0x30 [ 112.093876][ T2871] Modules linked in: [ 112.093892][ T2871] ---[ end trace fee771e2d3fd0cd0 ]--- [ 112.093907][ T2871] RIP: 0010:fbcon_cursor+0x114/0x660 [ 112.093918][ T2871] Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 e6 04 00 00 4d 8b b4 24 a0 03 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <0f> b6 14 02 4c 89 f0 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 ba [ 112.093924][ T2871] RSP: 0018:ffffc90008fe7af0 EFLAGS: 00010203 [ 112.093934][ T2871] RAX: dffffc0000000000 RBX: ffff8880a3927800 RCX: ffffffff83f31c60 [ 112.093941][ T2871] RDX: 0000000020000001 RSI: ffffffff83c5b4ec RDI: ffff8880a80f13a0 [ 112.093949][ T2871] RBP: ffffc90008fe7b30 R08: ffff88809ee88280 R09: ffffed1014725374 [ 112.093956][ T2871] R10: ffffed1014725373 R11: ffff8880a3929b9f R12: ffff8880a80f1000 [ 112.093963][ T2871] R13: ffff8880a39b5000 R14: 000000010000000c R15: ffff8880a39b5468 [ 112.093972][ T2871] FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 112.093979][ T2871] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 112.093986][ T2871] CR2: 0000000000455300 CR3: 00000000938e8000 CR4: 00000000001406f0 [ 112.093995][ T2871] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 112.094002][ T2871] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 112.094008][ T2871] Kernel panic - not syncing: Fatal exception [ 112.095541][ T2871] Kernel Offset: disabled [ 112.501475][ T2871] Rebooting in 86400 seconds..