[ 83.724089][ T27] audit: type=1400 audit(1575935915.949:37): avc: denied { watch } for pid=9292 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 [ 83.765643][ T27] audit: type=1400 audit(1575935915.979:38): avc: denied { watch } for pid=9292 comm="restorecond" path="/etc/selinux/restorecond.conf" dev="sda1" ino=2232 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [ 83.935504][ T27] audit: type=1800 audit(1575935916.159:39): pid=9194 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=2432 res=0 [ 83.957287][ T27] audit: type=1800 audit(1575935916.159:40): pid=9194 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=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 88.929185][ T27] audit: type=1400 audit(1575935921.149:41): avc: denied { map } for pid=9376 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 '10.128.0.133' (ECDSA) to the list of known hosts. [ 95.439378][ T27] audit: type=1400 audit(1575935927.659:42): avc: denied { map } for pid=9388 comm="syz-executor739" path="/root/syz-executor739679033" 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 [ 95.444962][ T9388] BUG: kernel NULL pointer dereference, address: 0000000000000003 [ 95.476009][ T9388] #PF: supervisor write access in kernel mode [ 95.482054][ T9388] #PF: error_code(0x0002) - not-present page executing program [ 95.488006][ T9388] PGD 99576067 P4D 99576067 PUD 99575067 PMD 0 [ 95.494228][ T9388] Oops: 0002 [#1] PREEMPT SMP KASAN [ 95.499400][ T9388] CPU: 0 PID: 9388 Comm: syz-executor739 Not tainted 5.5.0-rc1-syzkaller #0 [ 95.508043][ T9388] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 95.518091][ T9388] RIP: 0010:mem16_serial_out+0x6c/0x90 [ 95.523531][ T9388] Code: b6 8d e9 00 00 00 49 8d 7d 40 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 d3 e3 80 3c 02 00 75 19 48 63 db 49 03 5d 40 <66> 44 89 23 5b 41 5c 41 5d 5d c3 e8 d4 44 cf fd eb c2 e8 2d 45 cf [ 95.543123][ T9388] RSP: 0018:ffffc90002027908 EFLAGS: 00010206 [ 95.549312][ T9388] RAX: dffffc0000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 95.557268][ T9388] RDX: 1ffffffff182080e RSI: ffffffff83e38106 RDI: ffffffff8c104070 [ 95.565289][ T9388] RBP: ffffc90002027920 R08: ffff88809f202480 R09: ffffed10431781c6 [ 95.573248][ T9388] R10: ffffed10431781c5 R11: ffff888218bc0e2b R12: 00000000000000bf [ 95.581198][ T9388] R13: ffffffff8c104030 R14: ffffc90002027a40 R15: ffffffff8c104188 [ 95.589145][ T9388] FS: 00000000021c5880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 95.598239][ T9388] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 95.604804][ T9388] CR2: 0000000000000003 CR3: 00000000952c4000 CR4: 00000000001406f0 [ 95.612757][ T9388] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 95.620705][ T9388] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 95.628648][ T9388] Call Trace: [ 95.631920][ T9388] serial8250_do_startup+0x12b9/0x1cf0 [ 95.637375][ T9388] serial8250_startup+0x62/0x80 [ 95.642247][ T9388] uart_startup+0x452/0x980 [ 95.646727][ T9388] ? uart_proc_show+0x13f0/0x13f0 [ 95.651728][ T9388] ? serial8250_request_std_resource+0x159/0x3d0 [ 95.658030][ T9388] ? serial8250_probe+0x680/0x680 [ 95.663065][ T9388] ? serial8250_request_port+0x16/0x20 [ 95.668499][ T9388] uart_set_info_user+0x13b4/0x1cf0 [ 95.673675][ T9388] ? uart_port_activate+0x200/0x200 [ 95.678850][ T9388] tty_ioctl+0xf60/0x14f0 [ 95.683157][ T9388] ? tty_vhangup+0x30/0x30 [ 95.687547][ T9388] ? tomoyo_path_number_perm+0x454/0x520 [ 95.693157][ T9388] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 95.699374][ T9388] ? ___might_sleep+0x163/0x2c0 [ 95.704213][ T9388] ? tty_vhangup+0x30/0x30 [ 95.708615][ T9388] do_vfs_ioctl+0x977/0x14e0 [ 95.713182][ T9388] ? compat_ioctl_preallocate+0x220/0x220 [ 95.718878][ T9388] ? selinux_file_mprotect+0x620/0x620 [ 95.724323][ T9388] ? kmem_cache_free+0x26b/0x320 [ 95.729250][ T9388] ? do_sys_open+0x31d/0x5d0 [ 95.733829][ T9388] ? tomoyo_file_ioctl+0x23/0x30 [ 95.738744][ T9388] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 95.744963][ T9388] ? security_file_ioctl+0x8d/0xc0 [ 95.750067][ T9388] ksys_ioctl+0xab/0xd0 [ 95.754203][ T9388] __x64_sys_ioctl+0x73/0xb0 [ 95.758774][ T9388] do_syscall_64+0xfa/0x790 [ 95.763260][ T9388] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 95.769132][ T9388] RIP: 0033:0x440219 [ 95.773018][ T9388] 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 [ 95.792603][ T9388] RSP: 002b:00007ffd29af4ac8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 95.800995][ T9388] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440219 [ 95.808952][ T9388] RDX: 0000000020000240 RSI: 000000000000541f RDI: 0000000000000003 [ 95.816917][ T9388] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 95.824870][ T9388] R10: 0000000000401b30 R11: 0000000000000246 R12: 0000000000401aa0 [ 95.832821][ T9388] R13: 0000000000401b30 R14: 0000000000000000 R15: 0000000000000000 [ 95.840773][ T9388] Modules linked in: [ 95.844658][ T9388] CR2: 0000000000000003 [ 95.850209][ T9388] ---[ end trace 46cafdf3b3d16c6b ]--- [ 95.855676][ T9388] RIP: 0010:mem16_serial_out+0x6c/0x90 [ 95.861460][ T9388] Code: b6 8d e9 00 00 00 49 8d 7d 40 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 d3 e3 80 3c 02 00 75 19 48 63 db 49 03 5d 40 <66> 44 89 23 5b 41 5c 41 5d 5d c3 e8 d4 44 cf fd eb c2 e8 2d 45 cf [ 95.881218][ T9388] RSP: 0018:ffffc90002027908 EFLAGS: 00010206 [ 95.887303][ T9388] RAX: dffffc0000000000 RBX: 0000000000000003 RCX: 0000000000000000 [ 95.895681][ T9388] RDX: 1ffffffff182080e RSI: ffffffff83e38106 RDI: ffffffff8c104070 [ 95.903717][ T9388] RBP: ffffc90002027920 R08: ffff88809f202480 R09: ffffed10431781c6 [ 95.911713][ T9388] R10: ffffed10431781c5 R11: ffff888218bc0e2b R12: 00000000000000bf [ 95.919724][ T9388] R13: ffffffff8c104030 R14: ffffc90002027a40 R15: ffffffff8c104188 [ 95.927723][ T9388] FS: 00000000021c5880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 95.936670][ T9388] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 95.943267][ T9388] CR2: 000055a9284f5110 CR3: 00000000952c4000 CR4: 00000000001406e0 [ 95.951280][ T9388] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 95.959235][ T9388] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 95.967238][ T9388] Kernel panic - not syncing: Fatal exception [ 95.974429][ T9388] Kernel Offset: disabled [ 95.978756][ T9388] Rebooting in 86400 seconds..