Warning: Permanently added '10.128.0.60' (ECDSA) to the list of known hosts. 2021/01/17 10:43:34 fuzzer started 2021/01/17 10:43:34 dialing manager at 10.128.0.105:37987 2021/01/17 10:43:34 syscalls: 3465 2021/01/17 10:43:34 code coverage: enabled 2021/01/17 10:43:34 comparison tracing: enabled 2021/01/17 10:43:34 extra coverage: enabled 2021/01/17 10:43:34 setuid sandbox: enabled 2021/01/17 10:43:34 namespace sandbox: enabled 2021/01/17 10:43:34 Android sandbox: /sys/fs/selinux/policy does not exist 2021/01/17 10:43:34 fault injection: enabled 2021/01/17 10:43:34 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2021/01/17 10:43:34 net packet injection: enabled 2021/01/17 10:43:34 net device setup: enabled 2021/01/17 10:43:34 concurrency sanitizer: enabled 2021/01/17 10:43:34 devlink PCI setup: PCI device 0000:00:10.0 is not available 2021/01/17 10:43:34 USB emulation: enabled 2021/01/17 10:43:34 hci packet injection: enabled 2021/01/17 10:43:34 wifi device emulation: enabled 2021/01/17 10:43:36 suppressing KCSAN reports in functions: '__delete_from_page_cache' 'blk_mq_sched_dispatch_requests' 'do_nanosleep' 'generic_write_end' 'blk_mq_rq_ctx_init' 'xas_clear_mark' 'alloc_pid' 'ext4_mb_regular_allocator' '__xa_clear_mark' 'do_signal_stop' 'ext4_writepages' 'ext4_free_inodes_count' 'step_into' 'expire_timers' 'pcpu_alloc' 'ext4_mb_good_group' 'do_select' '__ext4_new_inode' 'n_tty_receive_buf_common' 'blk_mq_dispatch_rq_list' 'dd_has_work' 'vfs_readlink' 'kauditd_thread' 'ext4_free_inode' 'filemap_map_pages' 'ext4_mark_iloc_dirty' 2021/01/17 10:43:36 fetching corpus: 0, signal 0/2000 (executing program) 2021/01/17 10:43:36 fetching corpus: 40, signal 24597/28349 (executing program) 2021/01/17 10:43:36 fetching corpus: 90, signal 41253/46631 (executing program) 2021/01/17 10:43:36 fetching corpus: 138, signal 52021/58942 (executing program) 2021/01/17 10:43:36 fetching corpus: 188, signal 59393/67862 (executing program) 2021/01/17 10:43:36 fetching corpus: 238, signal 70889/80710 (executing program) 2021/01/17 10:43:37 fetching corpus: 288, signal 80506/91594 (executing program) 2021/01/17 10:43:37 fetching corpus: 338, signal 86405/98797 (executing program) 2021/01/17 10:43:37 fetching corpus: 388, signal 93664/107277 (executing program) 2021/01/17 10:43:37 fetching corpus: 438, signal 99658/114476 (executing program) 2021/01/17 10:43:37 fetching corpus: 488, signal 103775/119866 (executing program) 2021/01/17 10:43:37 fetching corpus: 538, signal 108930/126156 (executing program) 2021/01/17 10:43:37 fetching corpus: 588, signal 112696/131037 (executing program) 2021/01/17 10:43:37 fetching corpus: 638, signal 117724/137066 (executing program) 2021/01/17 10:43:37 fetching corpus: 688, signal 120892/141344 (executing program) 2021/01/17 10:43:37 fetching corpus: 738, signal 123140/144703 (executing program) 2021/01/17 10:43:37 fetching corpus: 787, signal 127223/149793 (executing program) 2021/01/17 10:43:37 fetching corpus: 837, signal 129821/153475 (executing program) 2021/01/17 10:43:37 fetching corpus: 886, signal 131987/156726 (executing program) 2021/01/17 10:43:38 fetching corpus: 936, signal 135383/161035 (executing program) 2021/01/17 10:43:38 fetching corpus: 986, signal 138235/164848 (executing program) 2021/01/17 10:43:38 fetching corpus: 1036, signal 140863/168439 (executing program) 2021/01/17 10:43:38 fetching corpus: 1086, signal 144268/172679 (executing program) 2021/01/17 10:43:38 fetching corpus: 1136, signal 147137/176434 (executing program) 2021/01/17 10:43:38 fetching corpus: 1186, signal 150136/180256 (executing program) 2021/01/17 10:43:38 fetching corpus: 1235, signal 153171/184090 (executing program) 2021/01/17 10:43:38 fetching corpus: 1285, signal 154885/186750 (executing program) 2021/01/17 10:43:38 fetching corpus: 1335, signal 158131/190672 (executing program) 2021/01/17 10:43:38 fetching corpus: 1385, signal 160413/193791 (executing program) 2021/01/17 10:43:38 fetching corpus: 1435, signal 162481/196728 (executing program) 2021/01/17 10:43:38 fetching corpus: 1485, signal 165312/200289 (executing program) 2021/01/17 10:43:38 fetching corpus: 1535, signal 167357/203153 (executing program) 2021/01/17 10:43:38 fetching corpus: 1585, signal 168789/205452 (executing program) 2021/01/17 10:43:38 fetching corpus: 1635, signal 170554/207994 (executing program) 2021/01/17 10:43:39 fetching corpus: 1685, signal 173226/211283 (executing program) 2021/01/17 10:43:39 fetching corpus: 1735, signal 175509/214198 (executing program) 2021/01/17 10:43:39 fetching corpus: 1785, signal 177295/216687 (executing program) 2021/01/17 10:43:39 fetching corpus: 1835, signal 179565/219627 (executing program) 2021/01/17 10:43:39 fetching corpus: 1885, signal 184107/224302 (executing program) 2021/01/17 10:43:39 fetching corpus: 1935, signal 187027/227653 (executing program) 2021/01/17 10:43:39 fetching corpus: 1985, signal 188749/230099 (executing program) 2021/01/17 10:43:39 fetching corpus: 2035, signal 191257/233132 (executing program) 2021/01/17 10:43:39 fetching corpus: 2085, signal 192924/235428 (executing program) 2021/01/17 10:43:39 fetching corpus: 2135, signal 194369/237498 (executing program) 2021/01/17 10:43:40 fetching corpus: 2185, signal 196139/239807 (executing program) 2021/01/17 10:43:40 fetching corpus: 2235, signal 198283/242401 (executing program) 2021/01/17 10:43:40 fetching corpus: 2285, signal 200087/244814 (executing program) 2021/01/17 10:43:40 fetching corpus: 2335, signal 202073/247197 (executing program) 2021/01/17 10:43:40 fetching corpus: 2385, signal 203474/249179 (executing program) 2021/01/17 10:43:40 fetching corpus: 2432, signal 204626/250949 (executing program) 2021/01/17 10:43:40 fetching corpus: 2482, signal 206365/253137 (executing program) 2021/01/17 10:43:40 fetching corpus: 2532, signal 207938/255165 (executing program) 2021/01/17 10:43:40 fetching corpus: 2582, signal 209987/257507 (executing program) 2021/01/17 10:43:40 fetching corpus: 2632, signal 212147/259977 (executing program) 2021/01/17 10:43:40 fetching corpus: 2680, signal 213919/262132 (executing program) 2021/01/17 10:43:40 fetching corpus: 2730, signal 215265/263893 (executing program) 2021/01/17 10:43:40 fetching corpus: 2779, signal 216918/265939 (executing program) 2021/01/17 10:43:40 fetching corpus: 2829, signal 218289/267751 (executing program) 2021/01/17 10:43:41 fetching corpus: 2878, signal 219842/269733 (executing program) 2021/01/17 10:43:41 fetching corpus: 2925, signal 220776/271202 (executing program) 2021/01/17 10:43:41 fetching corpus: 2975, signal 223141/273623 (executing program) 2021/01/17 10:43:41 fetching corpus: 3024, signal 224560/275403 (executing program) 2021/01/17 10:43:41 fetching corpus: 3074, signal 225690/277039 (executing program) 2021/01/17 10:43:41 fetching corpus: 3123, signal 227853/279287 (executing program) 2021/01/17 10:43:41 fetching corpus: 3173, signal 229330/281076 (executing program) 2021/01/17 10:43:41 fetching corpus: 3223, signal 230527/282722 (executing program) 2021/01/17 10:43:41 fetching corpus: 3273, signal 232406/284765 (executing program) 2021/01/17 10:43:41 fetching corpus: 3323, signal 233573/286231 (executing program) 2021/01/17 10:43:41 fetching corpus: 3373, signal 234776/287773 (executing program) 2021/01/17 10:43:41 fetching corpus: 3421, signal 235800/289198 (executing program) 2021/01/17 10:43:41 fetching corpus: 3471, signal 236978/290725 (executing program) 2021/01/17 10:43:41 fetching corpus: 3521, signal 238674/292557 (executing program) 2021/01/17 10:43:42 fetching corpus: 3571, signal 239631/293850 (executing program) 2021/01/17 10:43:42 fetching corpus: 3621, signal 241638/295824 (executing program) 2021/01/17 10:43:42 fetching corpus: 3671, signal 243609/297755 (executing program) 2021/01/17 10:43:42 fetching corpus: 3721, signal 244977/299276 (executing program) 2021/01/17 10:43:42 fetching corpus: 3771, signal 246396/300856 (executing program) 2021/01/17 10:43:42 fetching corpus: 3821, signal 247692/302341 (executing program) 2021/01/17 10:43:42 fetching corpus: 3871, signal 248493/303577 (executing program) 2021/01/17 10:43:42 fetching corpus: 3921, signal 249751/305011 (executing program) 2021/01/17 10:43:42 fetching corpus: 3971, signal 250706/306239 (executing program) 2021/01/17 10:43:42 fetching corpus: 4020, signal 251719/307522 (executing program) 2021/01/17 10:43:42 fetching corpus: 4070, signal 252947/308892 (executing program) 2021/01/17 10:43:43 fetching corpus: 4120, signal 254344/310415 (executing program) 2021/01/17 10:43:43 fetching corpus: 4170, signal 255734/311845 (executing program) 2021/01/17 10:43:43 fetching corpus: 4219, signal 256877/313174 (executing program) 2021/01/17 10:43:43 fetching corpus: 4268, signal 257953/314420 (executing program) 2021/01/17 10:43:43 fetching corpus: 4317, signal 259110/315712 (executing program) 2021/01/17 10:43:43 fetching corpus: 4367, signal 260191/316933 (executing program) 2021/01/17 10:43:43 fetching corpus: 4417, signal 261069/318041 (executing program) [ 39.092782][ T8439] ================================================================== [ 39.101533][ T8439] BUG: KCSAN: data-race in futex_wait_queue_me / prepare_signal [ 39.109199][ T8439] [ 39.111512][ T8439] read-write to 0xffff888105ea002c of 4 bytes by task 8441 on cpu 1: [ 39.119674][ T8439] futex_wait_queue_me+0x17e/0x240 [ 39.124809][ T8439] futex_wait+0x145/0x3d0 [ 39.129179][ T8439] do_futex+0x105a/0x20c0 [ 39.133496][ T8439] __se_sys_futex+0x2a8/0x390 [ 39.138257][ T8439] __x64_sys_futex+0x74/0x80 [ 39.142843][ T8439] do_syscall_64+0x39/0x80 [ 39.147248][ T8439] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 39.153137][ T8439] [ 39.155498][ T8439] read to 0xffff888105ea002c of 4 bytes by task 8439 on cpu 0: [ 39.163022][ T8439] prepare_signal+0x872/0xd80 [ 39.167777][ T8439] __send_signal+0x64/0x780 [ 39.172268][ T8439] send_signal+0x39f/0x3d0 [ 39.176670][ T8439] do_send_sig_info+0x9b/0xe0 [ 39.181392][ T8439] do_send_specific+0xc7/0x100 [ 39.186142][ T8439] __x64_sys_tgkill+0x108/0x140 [ 39.190977][ T8439] do_syscall_64+0x39/0x80 [ 39.195381][ T8439] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 39.201270][ T8439] [ 39.203586][ T8439] Reported by Kernel Concurrency Sanitizer on: [ 39.209842][ T8439] CPU: 0 PID: 8439 Comm: syz-fuzzer Not tainted 5.11.0-rc3-syzkaller #0 [ 39.218320][ T8439] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.228367][ T8439] ================================================================== [ 39.236416][ T8439] Kernel panic - not syncing: panic_on_warn set ... [ 39.242983][ T8439] CPU: 0 PID: 8439 Comm: syz-fuzzer Not tainted 5.11.0-rc3-syzkaller #0 [ 39.251293][ T8439] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.261893][ T8439] Call Trace: [ 39.265213][ T8439] dump_stack+0x116/0x15d [ 39.269584][ T8439] panic+0x1e7/0x5fa [ 39.273469][ T8439] ? vprintk_emit+0x2e2/0x360 [ 39.278258][ T8439] kcsan_report+0x67b/0x680 [ 39.282805][ T8439] ? kcsan_setup_watchpoint+0x47b/0x4e0 [ 39.288353][ T8439] ? prepare_signal+0x872/0xd80 [ 39.293338][ T8439] ? __send_signal+0x64/0x780 [ 39.298041][ T8439] ? send_signal+0x39f/0x3d0 [ 39.302711][ T8439] ? do_send_sig_info+0x9b/0xe0 [ 39.307665][ T8439] ? do_send_specific+0xc7/0x100 [ 39.312763][ T8439] ? __x64_sys_tgkill+0x108/0x140 [ 39.317803][ T8439] ? do_syscall_64+0x39/0x80 [ 39.322534][ T8439] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 39.328599][ T8439] ? __run_hrtimer+0x420/0x420 [ 39.333352][ T8439] ? do_futex+0x105a/0x20c0 [ 39.337844][ T8439] ? aa_may_signal+0x3df/0x410 [ 39.342603][ T8439] kcsan_setup_watchpoint+0x47b/0x4e0 [ 39.347966][ T8439] prepare_signal+0x872/0xd80 [ 39.352670][ T8439] __send_signal+0x64/0x780 [ 39.357161][ T8439] send_signal+0x39f/0x3d0 [ 39.361573][ T8439] do_send_sig_info+0x9b/0xe0 [ 39.366237][ T8439] do_send_specific+0xc7/0x100 [ 39.371115][ T8439] __x64_sys_tgkill+0x108/0x140 [ 39.375951][ T8439] do_syscall_64+0x39/0x80 [ 39.380357][ T8439] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 39.386527][ T8439] RIP: 0033:0x466066 [ 39.390709][ T8439] Code: cc cc cc cc b8 27 00 00 00 0f 05 48 89 44 24 08 c3 cc cc cc 48 8b 7c 24 08 48 8b 74 24 10 48 8b 54 24 18 b8 ea 00 00 00 0f 05 cc cc cc cc cc cc cc cc cc 8b 7c 24 08 48 8b 74 24 10 48 8b 54 [ 39.410532][ T8439] RSP: 002b:00007ffdec782510 EFLAGS: 00000246 ORIG_RAX: 00000000000000ea [ 39.418983][ T8439] RAX: ffffffffffffffda RBX: 000000c000000180 RCX: 0000000000466066 [ 39.426978][ T8439] RDX: 0000000000000017 RSI: 00000000000020f9 RDI: 00000000000020f7 [ 39.434982][ T8439] RBP: 00007ffdec782530 R08: 0000000000000000 R09: 0000000000000000 [ 39.442940][ T8439] R10: 00007ffdec782520 R11: 0000000000000246 R12: 0000000000000059 [ 39.450896][ T8439] R13: 0000000001ac0ec0 R14: 000000000000034d R15: ffffffffffffffff [ 39.459987][ T8439] Kernel Offset: disabled [ 39.464439][ T8439] Rebooting in 86400 seconds..