[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 81.222303][ T31] audit: type=1800 audit(1564337691.282:25): pid=12534 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 81.245838][ T31] audit: type=1800 audit(1564337691.302:26): pid=12534 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 81.283330][ T31] audit: type=1800 audit(1564337691.332:27): pid=12534 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 '10.128.0.146' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 92.562296][ T3055] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 92.802310][ T3055] usb 1-1: Using ep0 maxpacket: 8 [ 92.922400][ T3055] usb 1-1: config 0 has an invalid interface number: 200 but max is 0 [ 92.930649][ T3055] usb 1-1: config 0 has an invalid descriptor of length 0, skipping remainder of the config [ 92.941171][ T3055] usb 1-1: config 0 has no interface number 0 [ 92.947433][ T3055] usb 1-1: config 0 interface 200 altsetting 0 bulk endpoint 0x84 has invalid maxpacket 0 [ 92.957872][ T3055] usb 1-1: New USB device found, idVendor=2040, idProduct=4982, bcdDevice=f9.cf [ 92.967680][ T3055] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 92.977159][ T3055] usb 1-1: config 0 descriptor?? [ 93.242391][ T3055] hdpvr 1-1:0.200: firmware version 0xec dated 9E*8_A$w$#*=il200 [ 93.254082][ T3055] hdpvr 1-1:0.200: untested firmware, the driver might not work. [ 93.262218][T12572] ================================================================== [ 93.270387][T12572] BUG: KMSAN: kernel-infoleak in _copy_to_user+0x16b/0x1f0 [ 93.277801][T12572] CPU: 1 PID: 12572 Comm: rsyslogd Not tainted 5.2.0+ #15 [ 93.285193][T12572] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 93.295235][T12572] Call Trace: [ 93.298524][T12572] dump_stack+0x191/0x1f0 [ 93.302844][T12572] kmsan_report+0x162/0x2d0 [ 93.307349][T12572] kmsan_internal_check_memory+0x544/0xa80 [ 93.313251][T12572] ? msg_print_text+0x9c5/0xa70 [ 93.318224][T12572] kmsan_copy_to_user+0xa9/0xb0 [ 93.323058][T12572] _copy_to_user+0x16b/0x1f0 [ 93.327650][T12572] do_syslog+0x2e62/0x3160 [ 93.332235][T12572] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 93.338302][T12572] ? init_wait_entry+0x190/0x190 [ 93.343400][T12572] kmsg_read+0x142/0x1a0 [ 93.347651][T12572] ? mmap_vmcore_fault+0x30/0x30 [ 93.352571][T12572] proc_reg_read+0x25f/0x360 [ 93.357152][T12572] ? proc_reg_llseek+0x2f0/0x2f0 [ 93.362185][T12572] __vfs_read+0x1a9/0xc90 [ 93.366776][T12572] ? rw_verify_area+0x3a5/0x5e0 [ 93.371707][T12572] vfs_read+0x359/0x6f0 [ 93.375882][T12572] ? kmsan_get_shadow_origin_ptr+0x71/0x470 [ 93.382120][T12572] ksys_read+0x265/0x430 [ 93.386355][T12572] __se_sys_read+0x92/0xb0 [ 93.390792][T12572] __x64_sys_read+0x4a/0x70 [ 93.395289][T12572] do_syscall_64+0xbc/0xf0 [ 93.399694][T12572] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 93.405591][T12572] RIP: 0033:0x7f87872591fd [ 93.410000][T12572] 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 [ 93.430196][T12572] RSP: 002b:00007f87847f8e30 EFLAGS: 00000293 ORIG_RAX: 0000000000000000 [ 93.438792][T12572] RAX: ffffffffffffffda RBX: 00000000009024b0 RCX: 00007f87872591fd [ 93.447017][T12572] RDX: 0000000000000fff RSI: 00007f878602d5a0 RDI: 0000000000000004 [ 93.454985][T12572] RBP: 0000000000000000 R08: 00000000008ed260 R09: 0000000004000001 [ 93.462951][T12572] R10: 0000000000000001 R11: 0000000000000293 R12: 000000000065e420 [ 93.463547][ T3055] hdpvr 1-1:0.200: device init failed [ 93.471191][T12572] R13: 00007f87847f99c0 R14: 00007f878789e040 R15: 0000000000000003 [ 93.471238][T12572] kmsan_internal_poison_shadow+0x53/0xa0 [ 93.476934][ T3055] hdpvr: probe