[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 74.190513][ T30] audit: type=1800 audit(1569794598.244:25): pid=10916 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 74.222838][ T30] audit: type=1800 audit(1569794598.274:26): pid=10916 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 74.242973][ T30] audit: type=1800 audit(1569794598.274:27): pid=10916 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 '10.128.0.133' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 85.162712][ T12] usb 1-1: new high-speed USB device number 2 using dummy_hcd [ 85.402659][ T12] usb 1-1: Using ep0 maxpacket: 8 [ 85.522815][ T12] usb 1-1: config 0 has an invalid interface number: 26 but max is 0 [ 85.530993][ T12] usb 1-1: config 0 has no interface number 0 [ 85.537250][ T12] usb 1-1: config 0 interface 26 altsetting 0 bulk endpoint 0x8F has invalid maxpacket 0 [ 85.547189][ T12] usb 1-1: New USB device found, idVendor=2040, idProduct=4902, bcdDevice=ff.51 [ 85.556324][ T12] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 85.565485][ T12] usb 1-1: config 0 descriptor?? [ 85.822767][ T12] hdpvr 1-1:0.26: firmware version 0x8 dated uœ¨]âJÖì‹XYŠ[MÙsgA¿& u¡pP+íLhlkfï¥=žÌ¤6 [ 85.842653][T10954] ===================================================== [ 85.849631][T10954] BUG: KMSAN: kernel-infoleak in _copy_to_user+0x16b/0x1f0 [ 85.856809][T10954] CPU: 0 PID: 10954 Comm: rsyslogd Not tainted 5.3.0-rc7+ #0 [ 85.864161][T10954] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 85.874215][T10954] Call Trace: [ 85.877488][T10954] dump_stack+0x191/0x1f0 [ 85.881797][T10954] kmsan_report+0x13a/0x2b0 [ 85.886280][T10954] kmsan_internal_check_memory+0x187/0x4c0 [ 85.892180][T10954] ? msg_print_text+0x9c5/0xa70 [ 85.897324][T10954] kmsan_copy_to_user+0xa9/0xb0 [ 85.902162][T10954] _copy_to_user+0x16b/0x1f0 [ 85.906738][T10954] do_syslog+0x2e62/0x3160 [ 85.911135][T10954] ? kmsan_internal_set_origin+0x6a/0xb0 [ 85.916757][T10954] ? init_wait_entry+0x190/0x190 [ 85.921684][T10954] kmsg_read+0x142/0x1a0 [ 85.925916][T10954] ? mmap_vmcore_fault+0x30/0x30 [ 85.930830][T10954] proc_reg_read+0x25f/0x360 [ 85.935419][T10954] ? proc_reg_llseek+0x2f0/0x2f0 [ 85.940333][T10954] __vfs_read+0x1a9/0xc90 [ 85.944676][T10954] ? rw_verify_area+0x3a5/0x5e0 [ 85.949510][T10954] vfs_read+0x359/0x6f0 [ 85.953647][T10954] ksys_read+0x265/0x430 [ 85.957871][T10954] __se_sys_read+0x92/0xb0 [ 85.962270][T10954] __x64_sys_read+0x4a/0x70 [ 85.966750][T10954] do_syscall_64+0xbc/0xf0 [ 85.971240][T10954] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 85.977215][T10954] RIP: 0033:0x7f27c58021fd [ 85.981781][T10954] 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 [ 86.001620][T10954] RSP: 002b:00007f27c2da1e30 EFLAGS: 00000293 ORIG_RAX: 0000000000000000 [ 86.010012][T10954] RAX: ffffffffffffffda RBX: 00000000022f84b0 RCX: 00007f27c58021fd [ 86.019452][T10954] RDX: 0000000000000fff RSI: 00007f27c45d65a0 RDI: 0000000000000004 [ 86.027407][T10954] RBP: 0000000000000000 R08: 00000000022e3260 R09: 0000000004000001 [ 86.035527][T10954] R10: 0000000000000001 R11: 0000000000000293 R12: 000000000065e420 [ 86.043476][T10954] R13: 00007f27c2da29c0 R14: 00007f27c5e47040 R15: 0000000000000003 [ 86.051433][T10954] [ 86.053737][T10954] Uninit was created at: [ 86.057957][T10954] kmsan_internal_poison_shadow+0x53/0x100 [ 86.063742][T10954] kmsan_slab_alloc+0xaa/0x120 [ 86.068484][T10954] kmem_cache_alloc_trace+0x8c5/0xd20 [ 86.073831][T10954] do_syslog+0x263b/0x3160 [ 86.078223][T10954] kmsg_read+0x142/0x1a0 [ 86.082439][T10954] proc_reg_read+0x25f/0x360 [ 86.087006][T10954] __vfs_read+0x1a9/0xc90 [ 86.091308][T10954] vfs_read+0x359/0x6f0 [ 86.095438][T10954] ksys_read+0x265/0x430 [ 86.099656][T10954] __se_sys_read+0x92/0xb0 [ 86.104044][T10954] __x64_sys_read+0x4a/0x70 [ 86.108521][T10954] do_syscall_64+0xbc/0xf0 [ 86.112911][T10954] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 86.118774][T10954] [ 86.121076][T10954] Byte 113 of 115 is uninitialized [ 86.126678][T10954] Memory access of size 115 starts at ffff88810e446c00 [ 86.133494][T10954] Data copied to user address 00007f27c45d65a0 [ 86.139618][T10954] ===================================================== [ 86.146530][T10954] Disabling lock debugging due to kernel taint [ 86.152657][T10954] Kernel panic - not syncing: panic_on_warn set ... [ 86.159224][T10954] CPU: 0 PID: 10954 Comm: rsyslogd Tainted: G B 5.3.0-rc7+ #0 [ 86.167952][T10954] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 86.177997][T10954] Call Trace: [ 86.181271][T10954] dump_stack+0x191/0x1f0 [ 86.185594][T10954] panic+0x3c9/0xc1e [ 86.189507][T10954] kmsan_report+0x2a2/0x2b0 [ 86.193992][T10954] kmsan_internal_check_memory+0x187/0x4c0 [ 86.199775][T10954] ? msg_print_text+0x9c5/0xa70 [ 86.204609][T10954] kmsan_copy_to_user+0xa9/0xb0 [ 86.209437][T10954] _copy_to_user+0x16b/0x1f0 [ 86.214007][T10954] do_syslog+0x2e62/0x3160 [ 86.218400][T10954] ? kmsan_internal_set_origin+0x6a/0xb0 [ 86.224020][T10954] ? init_wait_entry+0x190/0x190 [ 86.228940][T10954] kmsg_read+0x142/0x1a0 [ 86.233162][T10954] ? mmap_vmcore_fault+0x30/0x30 [ 86.238073][T10954] proc_reg_read+0x25f/0x360 [ 86.242644][T10954] ? proc_reg_llseek+0x2f0/0x2f0 [ 86.247560][T10954] __vfs_read+0x1a9/0xc90 [ 86.251870][T10954] ? rw_verify_area+0x3a5/0x5e0 [ 86.256714][T10954] vfs_read+0x359/0x6f0 [ 86.260865][T10954] ksys_read+0x265/0x430 [ 86.265090][T10954] __se_sys_read+0x92/0xb0 [ 86.269488][T10954] __x64_sys_read+0x4a/0x70 [ 86.273982][T10954] do_syscall_64+0xbc/0xf0 [ 86.278381][T10954] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 86.284259][T10954] RIP: 0033:0x7f27c58021fd [ 86.288653][T10954] 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 [ 86.308240][T10954] RSP: 002b:00007f27c2da1e30 EFLAGS: 00000293 ORIG_RAX: 0000000000000000 [ 86.317509][T10954] RAX: ffffffffffffffda RBX: 00000000022f84b0 RCX: 00007f27c58021fd [ 86.325468][T10954] RDX: 0000000000000fff RSI: 00007f27c45d65a0 RDI: 0000000000000004 [ 86.333417][T10954] RBP: 0000000000000000 R08: 00000000022e3260 R09: 0000000004000001 [ 86.341376][T10954] R10: 0000000000000001 R11: 0000000000000293 R12: 000000000065e420 [ 86.349325][T10954] R13: 00007f27c2da29c0 R14: 00007f27c5e47040 R15: 0000000000000003 [ 86.358934][T10954] Kernel Offset: disabled [ 86.363256][T10954] Rebooting in 86400 seconds..