[ 67.287396] audit: type=1800 audit(1541932889.338:25): pid=6727 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 67.306700] audit: type=1800 audit(1541932889.358:26): pid=6727 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 67.326242] audit: type=1800 audit(1541932889.368:27): pid=6727 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 68.341461] cron (6785) used greatest stack depth: 53232 bytes left [....] 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 '10.128.0.72' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 78.146036] FAULT_INJECTION: forcing a failure. [ 78.146036] name failslab, interval 1, probability 0, space 0, times 1 [ 78.157499] CPU: 0 PID: 6877 Comm: syz-executor084 Not tainted 4.19.0+ #82 [ 78.164531] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 78.173912] Call Trace: [ 78.176510] ================================================================== [ 78.183880] BUG: KMSAN: uninit-value in show_trace_log_lvl+0x53f/0x11e0 [ 78.190637] CPU: 0 PID: 6877 Comm: syz-executor084 Not tainted 4.19.0+ #82 [ 78.197652] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 78.207004] Call Trace: [ 78.209599] dump_stack+0x419/0x480 [ 78.213230] ? show_trace_log_lvl+0x53f/0x11e0 [ 78.217837] kmsan_report+0x19f/0x300 [ 78.221684] __msan_warning+0x76/0xd0 [ 78.225509] ? stack_type_name+0x14/0xe0 [ 78.229656] show_trace_log_lvl+0x53f/0x11e0 [ 78.234106] ? dump_stack+0x32d/0x480 [ 78.237918] show_stack+0x12e/0x170 [ 78.241575] dump_stack+0x32d/0x480 [ 78.245239] should_fail+0x11e5/0x13c0 [ 78.249167] __should_failslab+0x278/0x2a0 [ 78.253414] should_failslab+0x29/0x70 [ 78.257331] __kmalloc_node+0x257/0x1520 [ 78.261404] ? __get_vm_area_node+0x28c/0x820 [ 78.265924] __get_vm_area_node+0x28c/0x820 [ 78.270291] __vmalloc_node_range+0x290/0x12a0 [ 78.274897] ? bpf_prog_alloc+0xe1/0x4f0 [ 78.278988] __vmalloc+0xe2/0x100 [ 78.282497] ? bpf_prog_alloc+0xe1/0x4f0 [ 78.286574] bpf_prog_alloc+0xe1/0x4f0 [ 78.290467] ? strcmp+0x83/0x160 [ 78.293847] __do_sys_bpf+0x6584/0xf9a0 [ 78.297838] ? kmsan_set_origin+0x83/0x130 [ 78.302085] ? kmsan_internal_unpoison_shadow+0x83/0xe0 [ 78.307514] ? __msan_metadata_ptr_for_store_4+0x13/0x20 [ 78.312975] ? prepare_exit_to_usermode+0x182/0x4d0 [ 78.318064] ? syscall_return_slowpath+0x123/0x8c0 [ 78.323015] __se_sys_bpf+0x8e/0xa0 [ 78.326657] __x64_sys_bpf+0x4a/0x70 [ 78.330422] do_syscall_64+0xcf/0x110 [ 78.334232] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 78.339426] RIP: 0033:0x440529 [ 78.342674] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 5b 14 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 78.361591] RSP: 002b:00007ffd438ea0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 78.369329] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440529 [ 78.376601] RDX: 0000000000000018 RSI: 0000000020b7a000 RDI: 0000000000000005 [ 78.383873] RBP: 00000000006cb018 R08: 0000000000000001 R09: 0000000000000031 [ 78.391145] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 [ 78.398416] R13: ffffffffffffffff R14: 0000000000000000 R15: 0000000000000000 [ 78.405743] [ 78.407375] Local variable description: ----state@show_trace_log_lvl [ 78.413863] Variable was created at: [ 78.417583] show_trace_log_lvl+0xb3/0x11e0 [ 78.421906] show_stack+0x12e/0x170 [ 78.425533] ================================================================== [ 78.432894] Disabling lock debugging due to kernel taint [ 78.438345] Kernel panic - not syncing: panic_on_warn set ... [ 78.438345] [ 78.445719] CPU: 0 PID: 6877 Comm: syz-executor084 Tainted: G B 4.19.0+ #82 [ 78.454119] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 78.463518] Call Trace: [ 78.466115] dump_stack+0x419/0x480 [ 78.469759] panic+0x57e/0xb28 [ 78.473039] ? __msan_metadata_ptr_for_store_1+0x13/0x20 [ 78.478503] kmsan_report+0x300/0x300 [ 78.482337] __msan_warning+0x76/0xd0 [ 78.486198] ? stack_type_name+0x14/0xe0 [ 78.490288] show_trace_log_lvl+0x53f/0x11e0 [ 78.494734] ? dump_stack+0x32d/0x480 [ 78.498545] show_stack+0x12e/0x170 [ 78.502237] dump_stack+0x32d/0x480 [ 78.505905] should_fail+0x11e5/0x13c0 [ 78.509814] __should_failslab+0x278/0x2a0 [ 78.514114] should_failslab+0x29/0x70 [ 78.518009] __kmalloc_node+0x257/0x1520 [ 78.522087] ? __get_vm_area_node+0x28c/0x820 [ 78.526609] __get_vm_area_node+0x28c/0x820 [ 78.531003] __vmalloc_node_range+0x290/0x12a0 [ 78.535591] ? bpf_prog_alloc+0xe1/0x4f0 [ 78.539729] __vmalloc+0xe2/0x100 [ 78.543191] ? bpf_prog_alloc+0xe1/0x4f0 [ 78.547262] bpf_prog_alloc+0xe1/0x4f0 [ 78.551177] ? strcmp+0x83/0x160 [ 78.554565] __do_sys_bpf+0x6584/0xf9a0 [ 78.558563] ? kmsan_set_origin+0x83/0x130 [ 78.562808] ? kmsan_internal_unpoison_shadow+0x83/0xe0 [ 78.568186] ? __msan_metadata_ptr_for_store_4+0x13/0x20 [ 78.573643] ? prepare_exit_to_usermode+0x182/0x4d0 [ 78.578675] ? syscall_return_slowpath+0x123/0x8c0 [ 78.583626] __se_sys_bpf+0x8e/0xa0 [ 78.587266] __x64_sys_bpf+0x4a/0x70 [ 78.591010] do_syscall_64+0xcf/0x110 [ 78.594824] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 78.600062] RIP: 0033:0x440529 [ 78.603262] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 5b 14 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 78.622193] RSP: 002b:00007ffd438ea0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 78.629907] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440529 [ 78.637225] RDX: 0000000000000018 RSI: 0000000020b7a000 RDI: 0000000000000005 [ 78.644546] RBP: 00000000006cb018 R08: 0000000000000001 R09: 0000000000000031 [ 78.651835] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 [ 78.659112] R13: ffffffffffffffff R14: 0000000000000000 R15: 0000000000000000 [ 78.667499] Kernel Offset: disabled [ 78.671151] Rebooting in 86400 seconds..