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 '10.128.0.12' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 31.205188] ================================================================== [ 31.212572] BUG: KMSAN: uninit-value in __crypto_memneq+0x2f9/0x490 [ 31.218954] CPU: 1 PID: 3576 Comm: syzkaller149889 Not tainted 4.16.0+ #82 [ 31.225935] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.235262] Call Trace: [ 31.237827] dump_stack+0x185/0x1d0 [ 31.241428] ? __crypto_memneq+0x2f9/0x490 [ 31.245637] kmsan_report+0x142/0x240 [ 31.249413] __msan_warning_32+0x6c/0xb0 [ 31.253451] __crypto_memneq+0x2f9/0x490 [ 31.257488] ? kernel_fpu_end+0x2c/0x1d0 [ 31.261525] ? gcmaes_decrypt+0x874/0xea0 [ 31.265655] ? kernel_fpu_end+0xba/0x1d0 [ 31.269691] gcmaes_decrypt+0x8d5/0xea0 [ 31.273646] generic_gcmaes_decrypt+0x181/0x1e0 [ 31.278290] ? generic_gcmaes_encrypt+0x1e0/0x1e0 [ 31.283106] gcmaes_wrapper_decrypt+0x2f5/0x340 [ 31.287749] ? gcmaes_wrapper_encrypt+0x2d0/0x2d0 [ 31.292564] aead_recvmsg+0x25b5/0x2960 [ 31.296522] sock_recvmsg+0x1d0/0x230 [ 31.300297] ? aead_sendmsg+0x1b0/0x1b0 [ 31.304247] ___sys_recvmsg+0x3fb/0x810 [ 31.308199] ? __fget_light+0x56/0x710 [ 31.312063] ? __fdget+0x4e/0x60 [ 31.315404] ? __fget_light+0x1dc/0x710 [ 31.319352] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 31.324687] ? __fget_light+0x1f5/0x710 [ 31.328640] SYSC_recvmsg+0x298/0x3c0 [ 31.332419] SyS_recvmsg+0x54/0x80 [ 31.335932] do_syscall_64+0x309/0x430 [ 31.339798] ? ___sys_recvmsg+0x810/0x810 [ 31.343923] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 31.349091] RIP: 0033:0x43ff89 [ 31.352253] RSP: 002b:00007ffe9d6920d8 EFLAGS: 00000207 ORIG_RAX: 000000000000002f [ 31.359935] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043ff89 [ 31.367177] RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000005 [ 31.374423] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 31.381667] R10: 00000000004002c8 R11: 0000000000000207 R12: 00000000004018b0 [ 31.388913] R13: 0000000000401940 R14: 0000000000000000 R15: 0000000000000000 [ 31.396161] [ 31.397763] Local variable description: ----authTag@gcmaes_decrypt [ 31.404051] Variable was created at: [ 31.407741] gcmaes_decrypt+0xd6/0xea0 [ 31.411603] generic_gcmaes_decrypt+0x181/0x1e0 [ 31.416247] ================================================================== [ 31.423573] Disabling lock debugging due to kernel taint [ 31.428992] Kernel panic - not syncing: panic_on_warn set ... [ 31.428992] [ 31.436337] CPU: 1 PID: 3576 Comm: syzkaller149889 Tainted: G B 4.16.0+ #82 [ 31.444628] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.453952] Call Trace: [ 31.456517] dump_stack+0x185/0x1d0 [ 31.460116] panic+0x39d/0x940 [ 31.463294] ? __crypto_memneq+0x2f9/0x490 [ 31.467504] kmsan_report+0x238/0x240 [ 31.471302] __msan_warning_32+0x6c/0xb0 [ 31.475371] __crypto_memneq+0x2f9/0x490 [ 31.479426] ? kernel_fpu_end+0x2c/0x1d0 [ 31.483463] ? gcmaes_decrypt+0x874/0xea0 [ 31.487583] ? kernel_fpu_end+0xba/0x1d0 [ 31.491618] gcmaes_decrypt+0x8d5/0xea0 [ 31.495572] generic_gcmaes_decrypt+0x181/0x1e0 [ 31.500219] ? generic_gcmaes_encrypt+0x1e0/0x1e0 [ 31.505040] gcmaes_wrapper_decrypt+0x2f5/0x340 [ 31.509689] ? gcmaes_wrapper_encrypt+0x2d0/0x2d0 [ 31.514504] aead_recvmsg+0x25b5/0x2960 [ 31.518460] sock_recvmsg+0x1d0/0x230 [ 31.522233] ? aead_sendmsg+0x1b0/0x1b0 [ 31.526184] ___sys_recvmsg+0x3fb/0x810 [ 31.530135] ? __fget_light+0x56/0x710 [ 31.533994] ? __fdget+0x4e/0x60 [ 31.537338] ? __fget_light+0x1dc/0x710 [ 31.541287] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 31.546623] ? __fget_light+0x1f5/0x710 [ 31.550573] SYSC_recvmsg+0x298/0x3c0 [ 31.554352] SyS_recvmsg+0x54/0x80 [ 31.557869] do_syscall_64+0x309/0x430 [ 31.561732] ? ___sys_recvmsg+0x810/0x810 [ 31.565859] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 31.571027] RIP: 0033:0x43ff89 [ 31.574197] RSP: 002b:00007ffe9d6920d8 EFLAGS: 00000207 ORIG_RAX: 000000000000002f [ 31.581878] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043ff89 [ 31.589120] RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000005 [ 31.596363] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 31.603608] R10: 00000000004002c8 R11: 0000000000000207 R12: 00000000004018b0 [ 31.610852] R13: 0000000000401940 R14: 0000000000000000 R15: 0000000000000000 [ 31.618565] Dumping ftrace buffer: [ 31.622098] (ftrace buffer empty) [ 31.625782] Kernel Offset: disabled [ 31.629379] Rebooting in 86400 seconds..