Warning: Permanently added '10.128.15.208' (ECDSA) to the list of known hosts. 2021/03/21 14:33:33 fuzzer started 2021/03/21 14:33:34 dialing manager at 10.128.0.163:38653 2021/03/21 14:33:34 syscalls: 3557 2021/03/21 14:33:34 code coverage: enabled 2021/03/21 14:33:34 comparison tracing: enabled 2021/03/21 14:33:34 extra coverage: enabled 2021/03/21 14:33:34 setuid sandbox: enabled 2021/03/21 14:33:34 namespace sandbox: enabled 2021/03/21 14:33:34 Android sandbox: /sys/fs/selinux/policy does not exist 2021/03/21 14:33:34 fault injection: enabled 2021/03/21 14:33:34 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2021/03/21 14:33:34 net packet injection: enabled 2021/03/21 14:33:34 net device setup: enabled 2021/03/21 14:33:34 concurrency sanitizer: enabled 2021/03/21 14:33:34 devlink PCI setup: PCI device 0000:00:10.0 is not available 2021/03/21 14:33:34 USB emulation: enabled 2021/03/21 14:33:34 hci packet injection: enabled 2021/03/21 14:33:34 wifi device emulation: enabled 2021/03/21 14:33:34 802.15.4 emulation: enabled 2021/03/21 14:33:35 suppressing KCSAN reports in functions: 'ext4_writepages' '__xa_clear_mark' 'alloc_pid' 'dd_has_work' 'tick_nohz_next_event' 'generic_write_end' '__ext4_new_inode' 'do_sys_poll' 'blk_mq_sched_dispatch_requests' 'ext4_free_inode' 'blk_mq_dispatch_rq_list' 'blk_mq_rq_ctx_init' 'expire_timers' 2021/03/21 14:33:35 fetching corpus: 0, signal 0/2000 (executing program) 2021/03/21 14:33:35 fetching corpus: 49, signal 27051/30735 (executing program) 2021/03/21 14:33:35 fetching corpus: 99, signal 39310/44603 (executing program) [ 32.697145][ T8382] ================================================================== [ 32.705347][ T8382] BUG: KCSAN: data-race in complete_signal / futex_wait_queue_me [ 32.713188][ T8382] [ 32.715537][ T8382] write to 0xffff88810b2fb02c of 4 bytes by task 8380 on cpu 1: [ 32.723239][ T8382] futex_wait_queue_me+0x186/0x250 [ 32.728331][ T8382] futex_wait+0x145/0x3d0 [ 32.732635][ T8382] do_futex+0x1062/0x1cd0 [ 32.736943][ T8382] __se_sys_futex+0x2a8/0x390 [ 32.741596][ T8382] __x64_sys_futex+0x74/0x80 [ 32.746164][ T8382] do_syscall_64+0x39/0x80 [ 32.750556][ T8382] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 32.756427][ T8382] [ 32.758729][ T8382] read to 0xffff88810b2fb02c of 4 bytes by task 8382 on cpu 0: [ 32.766242][ T8382] complete_signal+0x7c/0x600 [ 32.770896][ T8382] __send_signal+0x662/0x780 [ 32.775461][ T8382] send_signal+0x398/0x3e0 [ 32.779855][ T8382] do_send_sig_info+0x9b/0xe0 [ 32.784509][ T8382] do_send_specific+0xc7/0x100 [ 32.789247][ T8382] __x64_sys_tgkill+0x108/0x140 2021/03/21 14:33:35 fetching corpus: 148, signal 45002/51930 (executing program) [ 32.794194][ T8382] do_syscall_64+0x39/0x80 [ 32.798588][ T8382] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 32.804475][ T8382] [ 32.806773][ T8382] Reported by Kernel Concurrency Sanitizer on: [ 32.812895][ T8382] CPU: 0 PID: 8382 Comm: syz-fuzzer Not tainted 5.12.0-rc3-syzkaller #0 [ 32.821193][ T8382] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 32.831228][ T8382] ================================================================== 2021/03/21 14:33:35 fetching corpus: 198, signal 54663/63008 (executing program) 2021/03/21 14:33:36 fetching corpus: 248, signal 59559/69436 (executing program) 2021/03/21 14:33:36 fetching corpus: 298, signal 63129/74482 (executing program) 2021/03/21 14:33:36 fetching corpus: 348, signal 68531/81234 (executing program) 2021/03/21 14:33:36 fetching corpus: 398, signal 73842/87841 (executing program) 2021/03/21 14:33:36 fetching corpus: 448, signal 78707/93969 (executing program) 2021/03/21 14:33:36 fetching corpus: 498, signal 84983/101357 (executing program) 2021/03/21 14:33:36 fetching corpus: 548, signal 90516/107922 (executing program) 2021/03/21 14:33:36 fetching corpus: 598, signal 94164/112759 (executing program) 2021/03/21 14:33:36 fetching corpus: 648, signal 99453/118974 (executing program) 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