[ 88.501295][ T26] audit: type=1400 audit(1576781433.893:37): avc: denied { watch } for pid=9949 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 [ 88.545592][ T26] audit: type=1400 audit(1576781433.923:38): avc: denied { watch } for pid=9949 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. [ 88.721393][ T26] audit: type=1800 audit(1576781434.113:39): pid=9858 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 [ 88.743132][ T26] audit: type=1800 audit(1576781434.123:40): pid=9858 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: [ 91.422708][ T26] audit: type=1400 audit(1576781436.813:41): avc: denied { map } for pid=10037 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 '10.128.0.182' (ECDSA) to the list of known hosts. [ 98.012594][ T26] audit: type=1400 audit(1576781443.403:42): avc: denied { map } for pid=10049 comm="syz-executor009" path="/root/syz-executor009778929" 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 [ 98.019202][T10049] BUG: kernel NULL pointer dereference, address: 0000000000000002 [ 98.048343][T10049] #PF: supervisor write access in kernel mode [ 98.054403][T10049] #PF: error_code(0x0002) - not-present page executing program [ 98.060378][T10049] PGD 9f986067 P4D 9f986067 PUD 9f694067 PMD 0 [ 98.066606][T10049] Oops: 0002 [#1] PREEMPT SMP KASAN [ 98.071782][T10049] CPU: 0 PID: 10049 Comm: syz-executor009 Not tainted 5.5.0-rc2-syzkaller #0 [ 98.080652][T10049] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 98.090706][T10049] RIP: 0010:mem16_serial_out+0x6c/0x90 [ 98.096146][T10049] 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 2d cf fd eb c2 e8 2d 2e cf [ 98.120428][T10049] RSP: 0018:ffffc90001e1f8e8 EFLAGS: 00010202 [ 98.126584][T10049] RAX: dffffc0000000000 RBX: 0000000000000002 RCX: 0000000000000000 [ 98.134539][T10049] RDX: 1ffffffff182040e RSI: ffffffff83e397f6 RDI: ffffffff8c102070 [ 98.142759][T10049] RBP: ffffc90001e1f900 R08: ffff8880a7a76000 R09: ffffed10144ee1c6 [ 98.150721][T10049] R10: ffffed10144ee1c5 R11: ffff8880a2770e2b R12: 0000000000000001 [ 98.158670][T10049] R13: ffffffff8c102030 R14: ffffc90001e1fa40 R15: ffffffff8c102188 [ 98.166620][T10049] FS: 00000000014a8880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 98.175524][T10049] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 98.182100][T10049] CR2: 0000000000000002 CR3: 0000000092f1c000 CR4: 00000000001406f0 [ 98.190057][T10049] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 98.198008][T10049] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 98.206242][T10049] Call Trace: [ 98.209516][T10049] serial8250_clear_fifos.part.0+0x3a/0xb0 [ 98.215320][T10049] serial8250_do_startup+0x426/0x1cf0 [ 98.220683][T10049] serial8250_startup+0x62/0x80 [ 98.225509][T10049] uart_startup+0x452/0x980 [ 98.229995][T10049] ? uart_proc_show+0x13f0/0x13f0 [ 98.235001][T10049] ? serial8250_request_std_resource+0x159/0x3d0 [ 98.241312][T10049] ? serial8250_probe+0x680/0x680 [ 98.246332][T10049] ? serial8250_request_port+0x16/0x20 [ 98.251831][T10049] uart_set_info_user+0x13b4/0x1cf0 [ 98.257011][T10049] ? uart_port_activate+0x200/0x200 [ 98.262192][T10049] tty_ioctl+0xf60/0x14f0 [ 98.266498][T10049] ? tty_vhangup+0x30/0x30 [ 98.270898][T10049] ? tomoyo_path_number_perm+0x454/0x520 [ 98.276521][T10049] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 98.282766][T10049] ? ___might_sleep+0x163/0x2c0 [ 98.287638][T10049] ? tty_vhangup+0x30/0x30 [ 98.292036][T10049] do_vfs_ioctl+0x977/0x14e0 [ 98.296605][T10049] ? compat_ioctl_preallocate+0x220/0x220 [ 98.302313][T10049] ? selinux_file_mprotect+0x620/0x620 [ 98.308662][T10049] ? kmem_cache_free+0x26b/0x320 [ 98.313576][T10049] ? do_sys_open+0x31d/0x5d0 [ 98.318145][T10049] ? tomoyo_file_ioctl+0x23/0x30 [ 98.323091][T10049] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 98.329331][T10049] ? security_file_ioctl+0x8d/0xc0 [ 98.334460][T10049] ksys_ioctl+0xab/0xd0 [ 98.338597][T10049] __x64_sys_ioctl+0x73/0xb0 [ 98.343188][T10049] do_syscall_64+0xfa/0x790 [ 98.347675][T10049] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 98.353545][T10049] RIP: 0033:0x440219 [ 98.357434][T10049] 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 [ 98.377177][T10049] RSP: 002b:00007ffebc929c48 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 98.385580][T10049] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440219 [ 98.393539][T10049] RDX: 0000000020000240 RSI: 000000000000541f RDI: 0000000000000003 [ 98.401817][T10049] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 98.409783][T10049] R10: 0000000000401b30 R11: 0000000000000246 R12: 0000000000401aa0 [ 98.417733][T10049] R13: 0000000000401b30 R14: 0000000000000000 R15: 0000000000000000 [ 98.425686][T10049] Modules linked in: [ 98.429565][T10049] CR2: 0000000000000002 [ 98.434959][T10049] ---[ end trace 85639cf074dd4199 ]--- [ 98.440424][T10049] RIP: 0010:mem16_serial_out+0x6c/0x90 [ 98.446190][T10049] 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 2d cf fd eb c2 e8 2d 2e cf [ 98.465995][T10049] RSP: 0018:ffffc90001e1f8e8 EFLAGS: 00010202 [ 98.472071][T10049] RAX: dffffc0000000000 RBX: 0000000000000002 RCX: 0000000000000000 [ 98.480097][T10049] RDX: 1ffffffff182040e RSI: ffffffff83e397f6 RDI: ffffffff8c102070 [ 98.488110][T10049] RBP: ffffc90001e1f900 R08: ffff8880a7a76000 R09: ffffed10144ee1c6 [ 98.496103][T10049] R10: ffffed10144ee1c5 R11: ffff8880a2770e2b R12: 0000000000000001 [ 98.504365][T10049] R13: ffffffff8c102030 R14: ffffc90001e1fa40 R15: ffffffff8c102188 [ 98.512355][T10049] FS: 00000000014a8880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 98.521361][T10049] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 98.528006][T10049] CR2: 000055efc8943110 CR3: 0000000092f1c000 CR4: 00000000001406e0 [ 98.536135][T10049] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 98.544108][T10049] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 98.552125][T10049] Kernel panic - not syncing: Fatal exception [ 98.560466][T10049] Kernel Offset: disabled [ 98.564792][T10049] Rebooting in 86400 seconds..