[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 38.327274] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 41.522648] random: sshd: uninitialized urandom read (32 bytes read) [ 41.888859] random: sshd: uninitialized urandom read (32 bytes read) [ 43.055993] random: sshd: uninitialized urandom read (32 bytes read) [ 448.226626] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.51' (ECDSA) to the list of known hosts. [ 453.953730] random: sshd: uninitialized urandom read (32 bytes read) executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 717.792237] INFO: task syz-executor044:5705 blocked for more than 140 seconds. [ 717.799722] Not tainted 4.18.0-rc8+ #34 [ 717.804305] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 717.812372] syz-executor044 D59824 5705 4563 0x00000004 [ 717.818217] Call Trace: [ 717.820957] __schedule+0x667/0x770 [ 717.824752] schedule+0x1bc/0x2d0 [ 717.828328] __rwsem_down_write_failed_common+0xb51/0x13d0 [ 717.834122] rwsem_down_write_failed+0x2c/0x30 [ 717.838828] call_rwsem_down_write_failed+0x17/0x30 [ 717.843987] down_write+0x5c/0xc0 [ 717.847624] lock_mount+0xbb/0x8c0 [ 717.851373] do_add_mount+0x7e/0x770 [ 717.855234] ? module_put+0x3d/0x320 [ 717.859094] do_mount+0x281d/0x4f90 [ 717.862866] ? __msan_metadata_ptr_for_store_1+0x13/0x20 [ 717.868430] ksys_mount+0x32e/0x3d0 [ 717.872207] __x64_sys_mount+0x157/0x1c0 [ 717.876406] ? ksys_mount+0x3d0/0x3d0 [ 717.880364] do_syscall_64+0x15b/0x220 [ 717.884376] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 717.889672] RIP: 0033:0x446769 [ 717.892928] Code: Bad RIP value. [ 717.896445] RSP: 002b:00007fc9a0b12da8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 [ 717.904257] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000446769 [ 717.911652] RDX: 0000000020000300 RSI: 0000000020000040 RDI: 0000000000000000 [ 717.919054] RBP: 00000000006dbc20 R08: 0000000020000400 R09: 0000000000000000 [ 717.926442] R10: 0000000000000000 R11: 0000000000000202 R12: 00000000006dbc2c [ 717.933795] R13: 0030656c69662f2e R14: 7974697275636573 R15: 00000000006dbd2c [ 717.941170] INFO: task syz-executor044:5708 blocked for more than 140 seconds. [ 717.948656] Not tainted 4.18.0-rc8+ #34 [ 717.953265] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 717.961379] syz-executor044 D60280 5708 4563 0x00000004 [ 717.967292] Call Trace: [ 717.970047] __schedule+0x667/0x770 [ 717.973798] schedule+0x1bc/0x2d0 [ 717.977363] __rwsem_down_write_failed_common+0xb51/0x13d0 [ 717.983123] rwsem_down_write_failed+0x2c/0x30 [ 717.987797] call_rwsem_down_write_failed+0x17/0x30 [ 717.992938] ? vfs_removexattr+0x400/0x400 [ 717.997263] down_write+0x5c/0xc0 [ 718.000815] setxattr+0x545/0x9b0 [ 718.004427] ? rcu_all_qs+0x2e/0x1f0 [ 718.008286] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 718.013798] ? __sb_start_write+0x109/0x2d0 [ 718.018266] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 718.023736] ? mnt_want_write+0x28b/0x3b0 [ 718.028054] path_setxattr+0x292/0x460 [ 718.032072] __x64_sys_setxattr+0x15e/0x1c0 [ 718.036494] ? vfs_removexattr+0x400/0x400 [ 718.040827] do_syscall_64+0x15b/0x220 [ 718.044825] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 718.050121] RIP: 0033:0x446769 [ 718.053394] Code: Bad RIP value. [ 718.056889] RSP: 002b:00007fc9a0af1da8 EFLAGS: 00000297 ORIG_RAX: 00000000000000bc [ 718.064713] RAX: ffffffffffffffda RBX: 00000000006dbc38 RCX: 0000000000446769 [ 718.072098] RDX: 0000000020000200 RSI: 00000000200001c0 RDI: 0000000020000180 [ 718.079469] RBP: 00000000006dbc30 R08: 0000000000000000 R09: 0000000000000000 [ 718.086823] R10: 000000000000000c R11: 0000000000000297 R12: 00000000006dbc3c [ 718.094202] R13: 0030656c69662f2e R14: 7974697275636573 R15: 00000000006dbd2c [ 718.101575] INFO: task syz-executor044:5720 blocked for more than 140 seconds. [ 718.109034] Not tainted 4.18.0-rc8+ #34 [ 718.113615] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 718.121664] syz-executor044 D59480 5720 4558 0x00000004 [ 718.127606] Call Trace: [ 718.130318] __schedule+0x667/0x770 [ 718.134090] schedule+0x1bc/0x2d0 [ 718.137745] __fuse_request_send+0xe4a/0x1960 [ 718.142372] ? init_wait_entry+0x190/0x190 [ 718.146715] fuse_simple_request+0x98d/0xbb0 [ 718.151325] fuse_setxattr+0x36c/0x5c0 [ 718.155334] fuse_xattr_set+0x121/0x530 [ 718.159450] ? __msan_poison_alloca+0x173/0x200 [ 718.164226] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 718.169700] __vfs_setxattr+0x7fa/0x850 [ 718.173825] __vfs_setxattr_noperm+0x2fc/0x980 [ 718.178524] setxattr+0x81f/0x9b0 [ 718.182101] ? rcu_all_qs+0x2e/0x1f0 [ 718.186084] ? __msan_metadata_ptr_for_load_4+0x10/0x20 [ 718.191555] ? __sb_start_write+0x109/0x2d0 [ 718.195991] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 718.201508] ? mnt_want_write+0x28b/0x3b0 [ 718.205753] path_setxattr+0x292/0x460 [ 718.209775] __x64_sys_setxattr+0x15e/0x1c0 [ 718.214201] ? vfs_removexattr+0x400/0x400 [ 718.218554] do_syscall_64+0x15b/0x220 [ 718.222555] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 718.227840] RIP: 0033:0x446769 [ 718.231102] Code: Bad RIP value. [ 718.234592] RSP: 002b:00007fc9a0b12da8 EFLAGS: 00000297 ORIG_RAX: 00000000000000bc [ 718.242419] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000446769 [ 718.249785] RDX: 0000000020000200 RSI: 00000000200001c0 RDI: 0000000020000180 [ 718.257177] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 718.264581] R10: 000000000000000c R11: 0000000000000297 R12: 00000000006dbc2c [ 718.271975] R13: 0030656c69662f2e R14: 7974697275636573 R15: 00000000006dbd2c [ 718.279395] INFO: task syz-executor044:5726 blocked for more than 140 seconds. [ 718.286936] Not tainted 4.18.0-rc8+ #34 [ 718.291527] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 718.299594] syz-executor044 D59480 5726 4560 0x00000004 [ 718.305533] Call Trace: [ 718.308257] __schedule+0x667/0x770 [ 718.312045] schedule+0x1bc/0x2d0 [ 718.315628] __rwsem_down_write_failed_common+0xb51/0x13d0 [ 718.321398] rwsem_down_write_failed+0x2c/0x30 [ 718.326093] call_rwsem_down_write_failed+0x17/0x30 [ 718.331240] down_write+0x5c/0xc0 [ 718.335116] lock_mount+0xbb/0x8c0 [ 718.338740] do_add_mount+0x7e/0x770 [ 718.342653] ? module_put+0x3d/0x320 [ 718.346481] do_mount+0x281d/0x4f90 [ 718.350274] ? __msan_metadata_ptr_for_store_1+0x13/0x20 [ 718.355930] ksys_mount+0x32e/0x3d0 [ 718.359724] __x64_sys_mount+0x157/0x1c0 [ 718.364002] ? ksys_mount+0x3d0/0x3d0 [ 718.367957] do_syscall_64+0x15b/0x220 [ 718.372054] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 718.377325] RIP: 0033:0x446769 [ 718.380586] Code: Bad RIP value. [ 718.384063] RSP: 002b:00007fc9a0b12da8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 [ 718.391857] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000446769 [ 718.399217] RDX: 0000000020000300 RSI: 0000000020000040 RDI: 0000000000000000 [ 718.406567] RBP: 00000000006dbc20 R08: 0000000020000400 R09: 0000000000000000 [ 718.413927] R10: 0000000000000000 R11: 0000000000000202 R12: 00000000006dbc2c [ 718.421272] R13: 0030656c69662f2e R14: 7974697275636573 R15: 00000000006dbd2c [ 718.428654] INFO: task syz-executor044:5727 blocked for more than 140 seconds. [ 718.436098] Not tainted 4.18.0-rc8+ #34 [ 718.440678] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 718.448710] syz-executor044 D59824 5727 4555 0x00000004 [ 718.454545] Call Trace: [ 718.457252] __schedule+0x667/0x770 [ 718.460971] schedule+0x1bc/0x2d0 [ 718.464556] __rwsem_down_write_failed_common+0xb51/0x13d0 [ 718.470309] rwsem_down_write_failed+0x2c/0x30 [ 718.475054] call_rwsem_down_write_failed+0x17/0x30 [ 718.480165] down_write+0x5c/0xc0 [ 718.483744] lock_mount+0xbb/0x8c0 [ 718.487377] do_add_mount+0x7e/0x770 [ 718.491177] ? module_put+0x3d/0x320 [ 718.495027] do_mount+0x281d/0x4f90 [ 718.498741] ? __msan_metadata_ptr_for_store_1+0x13/0x20 [ 718.504466] ksys_mount+0x32e/0x3d0 [ 718.508304] __x64_sys_mount+0x157/0x1c0 [ 718.512534] ? ksys_mount+0x3d0/0x3d0 [ 718.516459] do_syscall_64+0x15b/0x220 [ 718.520458] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 718.525710] RIP: 0033:0x446769 [ 718.528954] Code: Bad RIP value. [ 718.532447] RSP: 002b:00007fc9a0b12da8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 [ 718.540226] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000446769 [ 718.547614] RDX: 0000000020000300 RSI: 0000000020000040 RDI: 0000000000000000 [ 718.555034] RBP: 00000000006dbc20 R08: 0000000020000400 R09: 0000000000000000 [ 718.562365] R10: 0000000000000000 R11: 0000000000000202 R12: 00000000006dbc2c [ 718.569742] R13: 0030656c69662f2e R14: 7974697275636573 R15: 00000000006dbd2c [ 718.577088] INFO: task syz-executor044:5728 blocked for more than 140 seconds. [ 718.584564] Not tainted 4.18.0-rc8+ #34 [ 718.589110] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 718.597147] syz-executor044 D59824 5728 4564 0x00000004 [ 718.602958] Call Trace: [ 718.605746] __schedule+0x667/0x770 [ 718.609463] schedule+0x1bc/0x2d0 [ 718.613050] __rwsem_down_write_failed_common+0xb51/0x13d0 [ 718.618779] rwsem_down_write_failed+0x2c/0x30 [ 718.623448] call_rwsem_down_write_failed+0x17/0x30 [ 718.628582] down_write+0x5c/0xc0 [ 718.632120] lock_mount+0xbb/0x8c0 [ 718.635721] do_add_mount+0x7e/0x770 [ 718.639562] ? module_put+0x3d/0x320 [ 718.643353] do_mount+0x281d/0x4f90 [ 718.647067] ? __msan_metadata_ptr_for_store_1+0x13/0x20 [ 718.652636] ksys_mount+0x32e/0x3d0 [ 718.656397] __x64_sys_mount+0x157/0x1c0 [ 718.660585] ? ksys_mount+0x3d0/0x3d0 [ 718.664464] do_syscall_64+0x15b/0x220 [ 718.668506] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 718.673817] RIP: 0033:0x446769 [ 718.677171] Code: Bad RIP value. [ 718.680639] RSP: 002b:00007fc9a0b12da8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 [ 718.688419] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000446769 [ 718.695761] RDX: 0000000020000300 RSI: 0000000020000040 RDI: 0000000000000000 [ 718.703091] RBP: 00000000006dbc20 R08: 0000000020000400 R09: 0000000000000000 [ 718.710446] R10: 0000000000000000 R11: 0000000000000202 R12: 00000000006dbc2c [ 718.717774] R13: 0030656c69662f2e R14: 7974697275636573 R15: 00000000006dbd2c [ 718.725189] INFO: task syz-executor044:5729 blocked for more than 140 seconds. [ 718.732600] Not tainted 4.18.0-rc8+ #34 [ 718.737208] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 718.745231] syz-executor044 D59824 5729 4554 0x00000004 [ 718.751081] Call Trace: [ 718.753784] __schedule+0x667/0x770 [ 718.757495] schedule+0x1bc/0x2d0 [ 718.761040] __rwsem_down_write_failed_common+0xb51/0x13d0 [ 718.766776] rwsem_down_write_failed+0x2c/0x30 [ 718.771461] call_rwsem_down_write_failed+0x17/0x30 [ 718.776586] down_write+0x5c/0xc0 [ 718.780152] lock_mount+0xbb/0x8c0 [ 718.783802] do_add_mount+0x7e/0x770 [ 718.787600] ? module_put+0x3d/0x320 [ 718.791455] do_mount+0x281d/0x4f90 [ 718.795145] ? __msan_metadata_ptr_for_store_1+0x13/0x20 [ 718.800708] ksys_mount+0x32e/0x3d0 [ 718.804443] __x64_sys_mount+0x157/0x1c0 [ 718.808604] ? ksys_mount+0x3d0/0x3d0 [ 718.812462] do_syscall_64+0x15b/0x220 [ 718.816436] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 718.821673] RIP: 0033:0x446769 [ 718.825013] Code: Bad RIP value. [ 718.828487] RSP: 002b:00007fc9a0b12da8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 [ 718.836274] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000446769 [ 718.843625] RDX: 0000000020000300 RSI: 0000000020000040 RDI: 0000000000000000 [ 718.850971] RBP: 00000000006dbc20 R08: 0000000020000400 R09: 0000000000000000 [ 718.858370] R10: 0000000000000000 R11: 0000000000000202 R12: 00000000006dbc2c [ 718.865700] R13: 0030656c69662f2e R14: 7974697275636573 R15: 00000000006dbd2c [ 718.873035] INFO: task syz-executor044:5732 blocked for more than 140 seconds. [ 718.880472] Not tainted 4.18.0-rc8+ #34 [ 718.885060] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 718.893136] syz-executor044 D59800 5732 4557 0x00000004 [ 718.898944] Call Trace: [ 718.901620] __schedule+0x667/0x770 [ 718.905329] schedule+0x1bc/0x2d0 [ 718.908878] __rwsem_down_write_failed_common+0xb51/0x13d0 [ 718.914656] rwsem_down_write_failed+0x2c/0x30 [ 718.919454] call_rwsem_down_write_failed+0x17/0x30 [ 718.924557] down_write+0x5c/0xc0 [ 718.928133] lock_mount+0xbb/0x8c0 [ 718.931832] do_add_mount+0x7e/0x770 [ 718.935656] ? module_put+0x3d/0x320 [ 718.939590] do_mount+0x281d/0x4f90 [ 718.943327] ? __msan_metadata_ptr_for_store_1+0x13/0x20 [ 718.948882] ksys_mount+0x32e/0x3d0 [ 718.952627] __x64_sys_mount+0x157/0x1c0 [ 718.956898] ? ksys_mount+0x3d0/0x3d0 [ 718.960778] do_syscall_64+0x15b/0x220 [ 718.964728] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 718.970040] RIP: 0033:0x446769 [ 718.973276] Code: Bad RIP value. [ 718.976829] RSP: 002b:00007fc9a0b12da8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 [ 718.984602] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000446769 [ 718.991940] RDX: 0000000020000300 RSI: 0000000020000040 RDI: 0000000000000000 [ 718.999259] RBP: 00000000006dbc20 R08: 0000000020000400 R09: 0000000000000000 [ 719.006647] R10: 0000000000000000 R11: 0000000000000202 R12: 00000000006dbc2c [ 719.014029] R13: 0030656c69662f2e R14: 7974697275636573 R15: 00000000006dbd2c [ 719.021384] INFO: task syz-executor044:5733 blocked for more than 140 seconds. [ 719.028822] Not tainted 4.18.0-rc8+ #34 [ 719.033384] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 719.041433] syz-executor044 D59480 5733 4562 0x00000004 [ 719.047254] Call Trace: [ 719.049956] __schedule+0x667/0x770 [ 719.053743] schedule+0x1bc/0x2d0 [ 719.057289] __rwsem_down_write_failed_common+0xb51/0x13d0 [ 719.063059] rwsem_down_write_failed+0x2c/0x30 [ 719.067711] call_rwsem_down_write_failed+0x17/0x30 [ 719.072811] down_write+0x5c/0xc0 [ 719.076351] lock_mount+0xbb/0x8c0 [ 719.079965] do_add_mount+0x7e/0x770 [ 719.083772] ? module_put+0x3d/0x320 [ 719.087589] do_mount+0x281d/0x4f90 [ 719.091273] ? __msan_metadata_ptr_for_store_1+0x13/0x20 [ 719.096837] ksys_mount+0x32e/0x3d0 [ 719.100588] __x64_sys_mount+0x157/0x1c0 [ 719.104754] ? ksys_mount+0x3d0/0x3d0 [ 719.108620] do_syscall_64+0x15b/0x220 [ 719.112638] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 719.117911] RIP: 0033:0x446769 [ 719.121164] Code: Bad RIP value. [ 719.124700] RSP: 002b:00007fc9a0b12da8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 [ 719.132495] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000446769 [ 719.139828] RDX: 0000000020000300 RSI: 0000000020000040 RDI: 0000000000000000 [ 719.147165] RBP: 00000000006dbc20 R08: 0000000020000400 R09: 0000000000000000 [ 719.154511] R10: 0000000000000000 R11: 0000000000000202 R12: 00000000006dbc2c [ 719.161919] R13: 0030656c69662f2e R14: 7974697275636573 R15: 00000000006dbd2c [ 719.169353] NMI backtrace for cpu 0 [ 719.173120] CPU: 0 PID: 680 Comm: khungtaskd Not tainted 4.18.0-rc8+ #34 [ 719.179988] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 719.189379] Call Trace: [ 719.192017] dump_stack+0x17c/0x1c0 [ 719.195680] nmi_trigger_cpumask_backtrace+0x255/0x4b0 [ 719.201000] ? arch_trigger_cpumask_backtrace+0x40/0x40 [ 719.206400] arch_trigger_cpumask_backtrace+0x2c/0x40 [ 719.211648] trigger_all_cpu_backtrace+0x2b/0x30 [ 719.216522] watchdog+0x1107/0x1130 [ 719.220170] kthread+0x44d/0x480 [ 719.223554] ? reset_hung_task_detector+0x30/0x30 [ 719.228426] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 719.233905] ? kthread_blkcg+0xf0/0xf0 [ 719.237888] ret_from_fork+0x35/0x40 [ 719.241828] Sending NMI from CPU 0 to CPUs 1: [ 719.246480] ------------[ cut here ]------------ [ 719.251266] kernel BUG at mm/kmsan/kmsan_entry.c:81! [ 719.256396] invalid opcode: 0000 [#1] SMP PTI [ 719.260908] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.18.0-rc8+ #34 [ 719.267534] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 719.276922] RIP: 0010:kmsan_nmi_enter+0x42/0x70 [ 719.281581] Code: 00 74 27 65 8b 04 25 80 90 03 00 83 c0 01 83 f8 08 7d 27 65 89 04 25 80 90 03 00 65 c6 04 25 15 6e 0b 00 ff c3 0f 0b 90 eb fe <0f> 0b 66 90 66 2e 0f 1f 84 00 00 00 00 00 eb fe 0f 0b 66 90 66 2e [ 719.301056] RSP: 0018:fffffe0000049ea8 EFLAGS: 00010046 [ 719.306435] RAX: 0000000080000000 RBX: 0000000000000001 RCX: 00000000c0000101 [ 719.313712] RDX: 00000000ffff8802 RSI: ffffffff88c0136c RDI: ffffea00003a7dc0 [ 719.321010] RBP: fffffe0000049ef9 R08: 0000000000000000 R09: 0000000000000000 [ 719.328281] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 719.335619] R13: 0000000000000000 R14: 00000001ac570000 R15: 0000000000000000 [ 719.342908] FS: 0000000000000000(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000 [ 719.351142] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 719.357027] CR2: 00000000006db0c0 CR3: 00000001ac570000 CR4: 00000000001406e0 [ 719.364321] Call Trace: [ 719.366925] [ 719.369088] ? end_repeat_nmi+0x19/0x8e [ 719.373074] ? end_repeat_nmi+0x7/0x8e [ 719.376986] ? __cpuidle_text_start+0x8/0x8 [ 719.381348] ? call_function_interrupt+0x20/0x20 [ 719.386160] ? call_function_interrupt+0x20/0x20 [ 719.391001] ? call_function_interrupt+0x20/0x20 [ 719.395756] [ 719.398012] ? default_idle+0x1fb/0x3d0 [ 719.402014] ? __cpuidle_text_start+0x8/0x8 [ 719.406357] ? arch_cpu_idle+0x26/0x30 [ 719.410251] ? do_idle+0x351/0x810 [ 719.413799] ? cpu_startup_entry+0x45/0x50 [ 719.418045] ? setup_APIC_timer+0x220/0x220 [ 719.422384] ? start_secondary+0x3a6/0x460 [ 719.426633] ? secondary_startup_64+0xa5/0xb0 [ 719.431131] Modules linked in: [ 719.434330] Dumping ftrace buffer: [ 719.437868] (ftrace buffer empty) [ 719.441588] ---[ end trace 00f51c214d64221e ]--- [ 719.446364] RIP: 0010:kmsan_nmi_enter+0x42/0x70 [ 719.451030] Code: 00 74 27 65 8b 04 25 80 90 03 00 83 c0 01 83 f8 08 7d 27 65 89 04 25 80 90 03 00 65 c6 04 25 15 6e 0b 00 ff c3 0f 0b 90 eb fe <0f> 0b 66 90 66 2e 0f 1f 84 00 00 00 00 00 eb fe 0f 0b 66 90 66 2e [ 719.470496] RSP: 0018:fffffe0000049ea8 EFLAGS: 00010046 [ 719.475864] RAX: 0000000080000000 RBX: 0000000000000001 RCX: 00000000c0000101 [ 719.483132] RDX: 00000000ffff8802 RSI: ffffffff88c0136c RDI: ffffea00003a7dc0 [ 719.490408] RBP: fffffe0000049ef9 R08: 0000000000000000 R09: 0000000000000000 [ 719.497676] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 719.504944] R13: 0000000000000000 R14: 00000001ac570000 R15: 0000000000000000 [ 719.512218] FS: 0000000000000000(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000 [ 719.520444] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 719.526344] CR2: 00000000006db0c0 CR3: 00000001ac570000 CR4: 00000000001406e0 [ 719.533624] Kernel panic - not syncing: Fatal exception [ 719.539264] Dumping ftrace buffer: [ 719.542802] (ftrace buffer empty) [ 719.546506] Kernel Offset: disabled [ 719.550135] Rebooting in 86400 seconds..