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 '10.128.0.32' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 31.515000] ================================================================== [ 31.522401] BUG: KMSAN: uninit-value in vmac_setkey+0x337/0x940 [ 31.528445] CPU: 1 PID: 3574 Comm: syzkaller839178 Not tainted 4.16.0+ #82 [ 31.535432] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.545025] Call Trace: [ 31.547606] dump_stack+0x185/0x1d0 [ 31.551211] ? vmac_setkey+0x337/0x940 [ 31.555075] kmsan_report+0x142/0x240 [ 31.558852] ? aes_set_key+0x260/0x260 [ 31.562713] __msan_warning_32+0x6c/0xb0 [ 31.566749] ? aes_set_key+0x260/0x260 [ 31.570634] vmac_setkey+0x337/0x940 [ 31.574328] ? vmac_final+0x3f80/0x3f80 [ 31.578280] shash_async_setkey+0x337/0x4c0 [ 31.582589] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 31.588020] ? trace_kmalloc+0xb6/0x2b0 [ 31.591986] ? shash_async_digest+0x1b0/0x1b0 [ 31.596462] crypto_ahash_setkey+0x31a/0x470 [ 31.600850] hash_setkey+0x8b/0xa0 [ 31.604375] alg_setsockopt+0x6c5/0x740 [ 31.608326] ? hash_release+0x50/0x50 [ 31.612103] ? alg_accept+0xd0/0xd0 [ 31.615707] SYSC_setsockopt+0x4b8/0x570 [ 31.619749] SyS_setsockopt+0x76/0xa0 [ 31.623701] do_syscall_64+0x309/0x430 [ 31.627566] ? SYSC_recv+0xe0/0xe0 [ 31.631083] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 31.636245] RIP: 0033:0x43fdb9 [ 31.639413] RSP: 002b:00007ffc17c49618 EFLAGS: 00000217 ORIG_RAX: 0000000000000036 [ 31.647096] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fdb9 [ 31.654352] RDX: 0000000000000001 RSI: 0000000000000117 RDI: 0000000000000003 [ 31.661604] RBP: 00000000006ca018 R08: 0000000000000010 R09: 00000000004002c8 [ 31.668860] R10: 0000000020f3eff0 R11: 0000000000000217 R12: 00000000004016e0 [ 31.676105] R13: 0000000000401770 R14: 0000000000000000 R15: 0000000000000000 [ 31.683351] [ 31.684951] Local variable description: ----out.i@vmac_setkey [ 31.690804] Variable was created at: [ 31.694497] vmac_setkey+0x93/0x940 [ 31.698105] shash_async_setkey+0x337/0x4c0 [ 31.702400] ================================================================== [ 31.709740] Disabling lock debugging due to kernel taint [ 31.715165] Kernel panic - not syncing: panic_on_warn set ... [ 31.715165] [ 31.722506] CPU: 1 PID: 3574 Comm: syzkaller839178 Tainted: G B 4.16.0+ #82 [ 31.730805] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.740225] Call Trace: [ 31.742801] dump_stack+0x185/0x1d0 [ 31.746413] panic+0x39d/0x940 [ 31.749594] ? vmac_setkey+0x337/0x940 [ 31.753455] kmsan_report+0x238/0x240 [ 31.757243] ? aes_set_key+0x260/0x260 [ 31.761112] __msan_warning_32+0x6c/0xb0 [ 31.765149] ? aes_set_key+0x260/0x260 [ 31.769014] vmac_setkey+0x337/0x940 [ 31.772714] ? vmac_final+0x3f80/0x3f80 [ 31.776663] shash_async_setkey+0x337/0x4c0 [ 31.780960] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 31.786299] ? trace_kmalloc+0xb6/0x2b0 [ 31.790247] ? shash_async_digest+0x1b0/0x1b0 [ 31.794719] crypto_ahash_setkey+0x31a/0x470 [ 31.799105] hash_setkey+0x8b/0xa0 [ 31.802621] alg_setsockopt+0x6c5/0x740 [ 31.806571] ? hash_release+0x50/0x50 [ 31.810357] ? alg_accept+0xd0/0xd0 [ 31.813961] SYSC_setsockopt+0x4b8/0x570 [ 31.818004] SyS_setsockopt+0x76/0xa0 [ 31.821787] do_syscall_64+0x309/0x430 [ 31.825654] ? SYSC_recv+0xe0/0xe0 [ 31.829172] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 31.834335] RIP: 0033:0x43fdb9 [ 31.837500] RSP: 002b:00007ffc17c49618 EFLAGS: 00000217 ORIG_RAX: 0000000000000036 [ 31.845183] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fdb9 [ 31.852428] RDX: 0000000000000001 RSI: 0000000000000117 RDI: 0000000000000003 [ 31.859672] RBP: 00000000006ca018 R08: 0000000000000010 R09: 00000000004002c8 [ 31.866918] R10: 0000000020f3eff0 R11: 0000000000000217 R12: 00000000004016e0 [ 31.874162] R13: 0000000000401770 R14: 0000000000000000 R15: 0000000000000000 [ 31.881876] Dumping ftrace buffer: [ 31.885393] (ftrace buffer empty) [ 31.889077] Kernel Offset: disabled [ 31.892676] Rebooting in 86400 seconds..