[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 69.751571][ T31] audit: type=1800 audit(1569095870.809:25): pid=10727 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 69.774472][ T31] audit: type=1800 audit(1569095870.839:26): pid=10727 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 69.812089][ T31] audit: type=1800 audit(1569095870.859:27): pid=10727 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.10.33' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 80.881984][ T17] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 81.122128][ T17] usb 1-1: Using ep0 maxpacket: 8 [ 81.242215][ T17] usb 1-1: config 0 has an invalid interface number: 26 but max is 0 [ 81.250358][ T17] usb 1-1: config 0 has no interface number 0 [ 81.256600][ T17] usb 1-1: config 0 interface 26 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 0 [ 81.266519][ T17] usb 1-1: New USB device found, idVendor=2040, idProduct=4902, bcdDevice=ff.51 [ 81.275676][ T17] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 81.284807][ T17] usb 1-1: config 0 descriptor?? [ 81.542259][ T17] hdpvr 1-1:0.26: firmware version 0x8 dated MsgA& upP+RZJY!q!9KU6 [ 81.562090][T10765] ================================================================== [ 81.570170][T10765] BUG: KMSAN: kernel-infoleak in _copy_to_user+0x16b/0x1f0 [ 81.577447][T10765] CPU: 0 PID: 10765 Comm: rsyslogd Not tainted 5.3.0-rc7+ #0 [ 81.584793][T10765] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 81.594881][T10765] Call Trace: [ 81.598161][T10765] dump_stack+0x191/0x1f0 [ 81.602481][T10765] kmsan_report+0x162/0x2d0 [ 81.606972][T10765] kmsan_internal_check_memory+0x189/0x4e0 [ 81.612762][T10765] ? msg_print_text+0x9c5/0xa70 [ 81.617603][T10765] kmsan_copy_to_user+0xa9/0xb0 [ 81.622440][T10765] _copy_to_user+0x16b/0x1f0 [ 81.627019][T10765] do_syslog+0x2e62/0x3160 [ 81.631445][T10765] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 81.637494][T10765] ? aa_file_perm+0x66e/0x25e0 [ 81.642255][T10765] ? init_wait_entry+0x190/0x190 [ 81.647178][T10765] kmsg_read+0x142/0x1a0 [ 81.651403][T10765] ? mmap_vmcore_fault+0x30/0x30 [ 81.656321][T10765] proc_reg_read+0x25f/0x360 [ 81.660900][T10765] ? proc_reg_llseek+0x2f0/0x2f0 [ 81.665822][T10765] __vfs_read+0x1a9/0xc90 [ 81.670143][T10765] ? rw_verify_area+0x3a5/0x5e0 [ 81.674994][T10765] vfs_read+0x359/0x6f0 [ 81.679140][T10765] ? kmsan_get_shadow_origin_ptr+0x71/0x4c0 [ 81.685021][T10765] ksys_read+0x265/0x430 [ 81.689305][T10765] __se_sys_read+0x92/0xb0 [ 81.693712][T10765] __x64_sys_read+0x4a/0x70 [ 81.698203][T10765] do_syscall_64+0xbc/0xf0 [ 81.702603][T10765] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 81.708515][T10765] RIP: 0033:0x7fc0730381fd [ 81.712924][T10765] Code: d1 20 00 00 75 10 b8 00 00 00 00 0f 05 48 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 5e fa ff ff 48 89 04 24 b8 00 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 a7 fa ff ff 48 89 d0 48 83 c4 08 48 3d 01 [ 81.732601][T10765] RSP: 002b:00007fc0705d7e30 EFLAGS: 00000293 ORIG_RAX: 0000000000000000 [ 81.741087][T10765] RAX: ffffffffffffffda RBX: 00000000007e74b0 RCX: 00007fc0730381fd [ 81.749060][T10765] RDX: 0000000000000fff RSI: 00007fc071e0c5a0 RDI: 0000000000000004 [ 81.757030][T10765] RBP: 0000000000000000 R08: 00000000007d2260 R09: 0000000004000001 [ 81.757060][T10765] R10: 0000000000000001 R11: 0000000000000293 R12: 000000000065e420 [ 81.772988][T10765] R13: 00007fc0705d89c0 R14: 00007fc07367d040 R15: 0000000000000003 [ 81.773483][ T17] hdpvr 1-1:0.26: device init failed [ 81.780993][T10765] kmsan_internal_poison_shadow+0x58/0xb0 [ 81.786526][