INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] 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 '10.128.10.25' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 58.074541] ================================================================== [ 58.081919] BUG: KMSAN: uninit-value in gf128mul_4k_lle+0x2b6/0x320 [ 58.088297] CPU: 1 PID: 4462 Comm: syzkaller790445 Not tainted 4.16.0+ #86 [ 58.095278] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.104603] Call Trace: [ 58.107163] dump_stack+0x185/0x1d0 [ 58.110765] ? gf128mul_4k_lle+0x2b6/0x320 [ 58.114975] kmsan_report+0x142/0x240 [ 58.118753] __msan_warning_32+0x6c/0xb0 [ 58.122787] gf128mul_4k_lle+0x2b6/0x320 [ 58.126834] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 58.132169] ? __crypto_xor+0x1608/0x16b0 [ 58.136289] ghash_update+0xa26/0x1160 [ 58.140152] ? ghash_init+0x50/0x50 [ 58.143751] shash_async_update+0x290/0x360 [ 58.148047] ? shash_async_init+0x270/0x270 [ 58.152343] gcm_hash+0x8b5/0x24a0 [ 58.155859] crypto_gcm_encrypt+0xa13/0xaf0 [ 58.160156] ? crypto_gcm_setauthsize+0xc0/0xc0 [ 58.164812] big_key_crypt+0x73d/0x780 [ 58.168680] big_key_preparse+0x3df/0xec0 [ 58.172809] ? kdf_ctr+0xc00/0xc00 [ 58.176323] key_create_or_update+0x7a8/0x1a40 [ 58.180885] SYSC_add_key+0x6c2/0x960 [ 58.184663] SyS_add_key+0x77/0xa0 [ 58.188177] do_syscall_64+0x309/0x430 [ 58.192039] ? keyring_detect_cycle_iterator+0x110/0x110 [ 58.197466] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 58.202629] RIP: 0033:0x43fd19 [ 58.205791] RSP: 002b:00007ffd3949e7a8 EFLAGS: 00000286 ORIG_RAX: 00000000000000f8 [ 58.213476] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fd19 [ 58.220724] RDX: 0000000020005480 RSI: 0000000020005440 RDI: 0000000020005400 [ 58.227966] RBP: 00000000006cb018 R08: 00000000ffffffff R09: 00000000004002c8 [ 58.235207] R10: 0000000000001000 R11: 0000000000000286 R12: 0000000000401640 [ 58.242448] R13: 00000000004016d0 R14: 0000000000000000 R15: 0000000000000000 [ 58.249693] [ 58.251289] Uninit was stored to memory at: [ 58.255584] kmsan_internal_chain_origin+0x12b/0x210 [ 58.260657] __msan_chain_origin+0x69/0xc0 [ 58.264865] __crypto_xor+0x23c/0x16b0 [ 58.268722] ghash_update+0x9e4/0x1160 [ 58.272581] shash_async_update+0x290/0x360 [ 58.276874] gcm_hash+0x8b5/0x24a0 [ 58.280386] crypto_gcm_encrypt+0xa13/0xaf0 [ 58.284679] big_key_crypt+0x73d/0x780 [ 58.288540] big_key_preparse+0x3df/0xec0 [ 58.292658] key_create_or_update+0x7a8/0x1a40 [ 58.297213] SYSC_add_key+0x6c2/0x960 [ 58.300985] SyS_add_key+0x77/0xa0 [ 58.304495] do_syscall_64+0x309/0x430 [ 58.308356] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 58.313520] Uninit was stored to memory at: [ 58.317816] kmsan_internal_chain_origin+0x12b/0x210 [ 58.322898] __msan_chain_origin+0x69/0xc0 [ 58.327104] __crypto_xor+0x23c/0x16b0 [ 58.330965] crypto_ctr_crypt_inplace+0x29a/0x3a0 [ 58.335781] crypto_ctr_crypt+0x54c/0x7d0 [ 58.339903] skcipher_encrypt_blkcipher+0x222/0x320 [ 58.344919] crypto_gcm_encrypt+0x53e/0xaf0 [ 58.349212] big_key_crypt+0x73d/0x780 [ 58.353070] big_key_preparse+0x3df/0xec0 [ 58.357189] key_create_or_update+0x7a8/0x1a40 [ 58.361741] SYSC_add_key+0x6c2/0x960 [ 58.365512] SyS_add_key+0x77/0xa0 [ 58.369024] do_syscall_64+0x309/0x430 [ 58.372886] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 58.378043] Uninit was created at: [ 58.381553] kmsan_alloc_meta_for_pages+0x161/0x3a0 [ 58.386541] kmsan_alloc_page+0x82/0xe0 [ 58.390488] __alloc_pages_nodemask+0xf5b/0x5dc0 [ 58.395217] alloc_pages_current+0x6b5/0x970 [ 58.399604] big_key_alloc_buffer+0x241/0xa00 [ 58.404071] big_key_preparse+0x20a/0xec0 [ 58.408189] key_create_or_update+0x7a8/0x1a40 [ 58.412741] SYSC_add_key+0x6c2/0x960 [ 58.416520] SyS_add_key+0x77/0xa0 [ 58.420030] do_syscall_64+0x309/0x430 [ 58.423891] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 58.429048] ================================================================== [ 58.436376] Disabling lock debugging due to kernel taint [ 58.441794] Kernel panic - not syncing: panic_on_warn set ... [ 58.441794] [ 58.449132] CPU: 1 PID: 4462 Comm: syzkaller790445 Tainted: G B 4.16.0+ #86 [ 58.457414] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.466737] Call Trace: [ 58.469297] dump_stack+0x185/0x1d0 [ 58.472898] panic+0x39d/0x940 [ 58.476073] ? gf128mul_4k_lle+0x2b6/0x320 [ 58.480278] kmsan_report+0x238/0x240 [ 58.484054] __msan_warning_32+0x6c/0xb0 [ 58.488088] gf128mul_4k_lle+0x2b6/0x320 [ 58.492121] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 58.497454] ? __crypto_xor+0x1608/0x16b0 [ 58.501574] ghash_update+0xa26/0x1160 [ 58.505436] ? ghash_init+0x50/0x50 [ 58.509036] shash_async_update+0x290/0x360 [ 58.513332] ? shash_async_init+0x270/0x270 [ 58.517625] gcm_hash+0x8b5/0x24a0 [ 58.521140] crypto_gcm_encrypt+0xa13/0xaf0 [ 58.525437] ? crypto_gcm_setauthsize+0xc0/0xc0 [ 58.530080] big_key_crypt+0x73d/0x780 [ 58.533944] big_key_preparse+0x3df/0xec0 [ 58.538068] ? kdf_ctr+0xc00/0xc00 [ 58.541580] key_create_or_update+0x7a8/0x1a40 [ 58.546142] SYSC_add_key+0x6c2/0x960 [ 58.549918] SyS_add_key+0x77/0xa0 [ 58.553430] do_syscall_64+0x309/0x430 [ 58.557293] ? keyring_detect_cycle_iterator+0x110/0x110 [ 58.562720] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 58.567883] RIP: 0033:0x43fd19 [ 58.571044] RSP: 002b:00007ffd3949e7a8 EFLAGS: 00000286 ORIG_RAX: 00000000000000f8 [ 58.578724] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fd19 [ 58.585967] RDX: 0000000020005480 RSI: 0000000020005440 RDI: 0000000020005400 [ 58.593208] RBP: 00000000006cb018 R08: 00000000ffffffff R09: 00000000004002c8 [ 58.600449] R10: 0000000000001000 R11: 0000000000000286 R12: 0000000000401640 [ 58.607690] R13: 00000000004016d0 R14: 0000000000000000 R15: 0000000000000000 [ 58.615306] Dumping ftrace buffer: [ 58.618818] (ftrace buffer empty) [ 58.622498] Kernel Offset: disabled [ 58.626097] Rebooting in 86400 seconds..