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 '10.128.0.53' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 41.579315] ================================================================== [ 41.586717] BUG: KMSAN: uninit-value in gf128mul_init_4k_lle+0x212/0x5c0 [ 41.593535] CPU: 1 PID: 3568 Comm: syzkaller754152 Not tainted 4.16.0+ #82 [ 41.600517] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.609843] Call Trace: [ 41.612410] dump_stack+0x185/0x1d0 [ 41.616012] ? gf128mul_init_4k_lle+0x212/0x5c0 [ 41.620655] kmsan_report+0x142/0x240 [ 41.624429] __msan_warning_32+0x6c/0xb0 [ 41.628463] gf128mul_init_4k_lle+0x212/0x5c0 [ 41.632934] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 41.638271] ? ghash_setkey+0x56/0x280 [ 41.642131] ghash_setkey+0x185/0x280 [ 41.645905] ? ghash_final+0x1f0/0x1f0 [ 41.649767] shash_async_setkey+0x337/0x4c0 [ 41.654066] ? shash_async_digest+0x1b0/0x1b0 [ 41.658537] crypto_ahash_setkey+0x31a/0x470 [ 41.662921] ? skcipher_encrypt_blkcipher+0x222/0x320 [ 41.668088] crypto_gcm_setkey+0xa3c/0xc10 [ 41.672300] ? crypto_gcm_exit_tfm+0xd0/0xd0 [ 41.676683] crypto_aead_setkey+0x373/0x4c0 [ 41.680981] aead_setkey+0xa0/0xc0 [ 41.684494] alg_setsockopt+0x6c5/0x740 [ 41.688442] ? aead_release+0x90/0x90 [ 41.692219] ? alg_accept+0xd0/0xd0 [ 41.695825] SYSC_setsockopt+0x4b8/0x570 [ 41.699860] SyS_setsockopt+0x76/0xa0 [ 41.703634] do_syscall_64+0x309/0x430 [ 41.707495] ? SYSC_recv+0xe0/0xe0 [ 41.711012] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 41.716172] RIP: 0033:0x43fdb9 [ 41.719333] RSP: 002b:00007ffdbc197ae8 EFLAGS: 00000217 ORIG_RAX: 0000000000000036 [ 41.727019] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fdb9 [ 41.734264] RDX: 0000000000000001 RSI: 0000000000000117 RDI: 0000000000000003 [ 41.741521] RBP: 00000000006ca018 R08: 0000000000000010 R09: 00000000004002c8 [ 41.748766] R10: 00000000204f7000 R11: 0000000000000217 R12: 00000000004016e0 [ 41.756011] R13: 0000000000401770 R14: 0000000000000000 R15: 0000000000000000 [ 41.763255] [ 41.764856] Uninit was stored to memory at: [ 41.769156] kmsan_internal_chain_origin+0x12b/0x210 [ 41.774231] kmsan_memcpy_origins+0x11d/0x170 [ 41.778699] __msan_memcpy+0x19f/0x1f0 [ 41.782559] gf128mul_init_4k_lle+0x99/0x5c0 [ 41.786939] ghash_setkey+0x185/0x280 [ 41.790711] shash_async_setkey+0x337/0x4c0 [ 41.795005] crypto_ahash_setkey+0x31a/0x470 [ 41.799385] crypto_gcm_setkey+0xa3c/0xc10 [ 41.803592] crypto_aead_setkey+0x373/0x4c0 [ 41.807893] aead_setkey+0xa0/0xc0 [ 41.811411] alg_setsockopt+0x6c5/0x740 [ 41.815360] SYSC_setsockopt+0x4b8/0x570 [ 41.819396] SyS_setsockopt+0x76/0xa0 [ 41.823171] do_syscall_64+0x309/0x430 [ 41.827034] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 41.832192] Uninit was stored to memory at: [ 41.836487] kmsan_internal_chain_origin+0x12b/0x210 [ 41.841565] __msan_chain_origin+0x69/0xc0 [ 41.845771] __crypto_xor+0x23c/0x16b0 [ 41.849632] crypto_ctr_crypt_inplace+0x29a/0x3a0 [ 41.854446] crypto_ctr_crypt+0x54c/0x7d0 [ 41.858569] skcipher_encrypt_blkcipher+0x222/0x320 [ 41.863556] crypto_gcm_setkey+0x6a3/0xc10 [ 41.867765] crypto_aead_setkey+0x373/0x4c0 [ 41.872062] aead_setkey+0xa0/0xc0 [ 41.875574] alg_setsockopt+0x6c5/0x740 [ 41.879520] SYSC_setsockopt+0x4b8/0x570 [ 41.883553] SyS_setsockopt+0x76/0xa0 [ 41.887324] do_syscall_64+0x309/0x430 [ 41.891192] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 41.896352] Local variable description: ----vla@crypto_ctr_crypt_inplace [ 41.903157] Variable was created at: [ 41.906841] crypto_ctr_crypt_inplace+0x19a/0x3a0 [ 41.911653] crypto_ctr_crypt+0x54c/0x7d0 [ 41.915767] ================================================================== [ 41.923095] Disabling lock debugging due to kernel taint [ 41.928515] Kernel panic - not syncing: panic_on_warn set ... [ 41.928515] [ 41.935857] CPU: 1 PID: 3568 Comm: syzkaller754152 Tainted: G B 4.16.0+ #82 [ 41.944140] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.953464] Call Trace: [ 41.956034] dump_stack+0x185/0x1d0 [ 41.959656] panic+0x39d/0x940 [ 41.962862] ? gf128mul_init_4k_lle+0x212/0x5c0 [ 41.967529] kmsan_report+0x238/0x240 [ 41.971315] __msan_warning_32+0x6c/0xb0 [ 41.975349] gf128mul_init_4k_lle+0x212/0x5c0 [ 41.979819] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 41.985157] ? ghash_setkey+0x56/0x280 [ 41.989018] ghash_setkey+0x185/0x280 [ 41.992791] ? ghash_final+0x1f0/0x1f0 [ 41.996651] shash_async_setkey+0x337/0x4c0 [ 42.000950] ? shash_async_digest+0x1b0/0x1b0 [ 42.005422] crypto_ahash_setkey+0x31a/0x470 [ 42.009806] ? skcipher_encrypt_blkcipher+0x222/0x320 [ 42.014975] crypto_gcm_setkey+0xa3c/0xc10 [ 42.019186] ? crypto_gcm_exit_tfm+0xd0/0xd0 [ 42.023568] crypto_aead_setkey+0x373/0x4c0 [ 42.027868] aead_setkey+0xa0/0xc0 [ 42.031391] alg_setsockopt+0x6c5/0x740 [ 42.035339] ? aead_release+0x90/0x90 [ 42.039116] ? alg_accept+0xd0/0xd0 [ 42.042741] SYSC_setsockopt+0x4b8/0x570 [ 42.046781] SyS_setsockopt+0x76/0xa0 [ 42.050558] do_syscall_64+0x309/0x430 [ 42.054421] ? SYSC_recv+0xe0/0xe0 [ 42.057938] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 42.063111] RIP: 0033:0x43fdb9 [ 42.066274] RSP: 002b:00007ffdbc197ae8 EFLAGS: 00000217 ORIG_RAX: 0000000000000036 [ 42.073957] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fdb9 [ 42.081200] RDX: 0000000000000001 RSI: 0000000000000117 RDI: 0000000000000003 [ 42.088446] RBP: 00000000006ca018 R08: 0000000000000010 R09: 00000000004002c8 [ 42.095688] R10: 00000000204f7000 R11: 0000000000000217 R12: 00000000004016e0 [ 42.102932] R13: 0000000000401770 R14: 0000000000000000 R15: 0000000000000000 [ 42.110514] Dumping ftrace buffer: [ 42.114033] (ftrace buffer empty) [ 42.117716] Kernel Offset: disabled [ 42.121601] Rebooting in 86400 seconds..