Warning: Permanently added '10.128.0.210' (ECDSA) to the list of known hosts. 2021/04/27 23:34:34 fuzzer started 2021/04/27 23:34:34 dialing manager at 10.128.0.163:45109 2021/04/27 23:34:35 syscalls: 1982 2021/04/27 23:34:35 code coverage: enabled 2021/04/27 23:34:35 comparison tracing: enabled 2021/04/27 23:34:35 extra coverage: enabled 2021/04/27 23:34:35 setuid sandbox: enabled 2021/04/27 23:34:35 namespace sandbox: enabled 2021/04/27 23:34:35 Android sandbox: enabled 2021/04/27 23:34:35 fault injection: enabled 2021/04/27 23:34:35 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2021/04/27 23:34:35 net packet injection: /dev/net/tun does not exist 2021/04/27 23:34:35 net device setup: enabled 2021/04/27 23:34:35 concurrency sanitizer: enabled 2021/04/27 23:34:35 devlink PCI setup: PCI device 0000:00:10.0 is not available 2021/04/27 23:34:35 USB emulation: /dev/raw-gadget does not exist 2021/04/27 23:34:35 hci packet injection: /dev/vhci does not exist 2021/04/27 23:34:35 wifi device emulation: /sys/class/mac80211_hwsim/ does not exist 2021/04/27 23:34:35 802.15.4 emulation: /sys/bus/platform/devices/mac802154_hwsim does not exist 2021/04/27 23:34:36 suppressing KCSAN reports in functions: 'fast_dput' '__xa_clear_mark' 'ext4_free_inode' 'do_readlinkat' 'xas_clear_mark' 'blk_mq_dispatch_rq_list' 'lookup_fast' 'do_nanosleep' '__fsnotify_parent' 'blk_mq_sched_dispatch_requests' 'do_sys_poll' '__ext4_new_inode' 'ext4_writepages' 'n_tty_receive_buf_common' 'blk_mq_rq_ctx_init' 'do_signal_stop' 'kauditd_thread' 'expire_timers' 'ext4_free_inodes_count' 'generic_write_end' 'shmem_mknod' 2021/04/27 23:34:36 fetching corpus: 0, signal 0/2000 (executing program) 2021/04/27 23:34:36 fetching corpus: 50, signal 9034/12875 (executing program) 2021/04/27 23:34:36 fetching corpus: 100, signal 21115/26543 (executing program) 2021/04/27 23:34:36 fetching corpus: 150, signal 30437/37315 (executing program) 2021/04/27 23:34:36 fetching corpus: 200, signal 34453/42840 (executing 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T1753] ================================================================== [ 19.965833][ T1753] BUG: KCSAN: data-race in futex_wait_queue_me / prepare_signal [ 19.966969][ T1753] [ 19.967332][ T1753] write to 0xffff888103ff10ac of 4 bytes by task 1762 on cpu 1: [ 19.968411][ T1753] futex_wait_queue_me+0x198/0x260 [ 19.969201][ T1753] futex_wait+0x143/0x430 [ 19.969833][ T1753] do_futex+0x9e8/0x1e10 [ 19.970467][ T1753] __se_sys_futex+0x2a8/0x390 [ 19.971121][ T1753] __x64_sys_futex+0x74/0x80 [ 19.971853][ T1753] do_syscall_64+0x4a/0x90 [ 19.972556][ T1753] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 19.973400][ T1753] [ 19.973784][ T1753] read to 0xffff888103ff10ac of 4 bytes by task 1753 on cpu 0: [ 19.974929][ T1753] prepare_signal+0x872/0xd80 [ 19.975580][ T1753] __send_signal+0x64/0x760 [ 19.976198][ T1753] send_signal+0x38e/0x3d0 [ 19.976820][ T1753] do_send_specific+0x13d/0x1c0 [ 19.977575][ T1753] __x64_sys_tgkill+0x108/0x140 [ 19.978341][ T1753] do_syscall_64+0x4a/0x90 [ 19.979110][ T1753] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 19.980050][ T1753] [ 19.980396][ T1753] Reported by Kernel Concurrency Sanitizer on: [ 19.981228][ T1753] CPU: 0 PID: 1753 Comm: syz-fuzzer Not tainted 5.12.0-syzkaller #0 [ 19.982327][ T1753] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 19.983780][ T1753] ================================================================== 2021/04/27 23:34:36 fetching corpus: 850, signal 73282/96610 (executing program) 2021/04/27 23:34:36 fetching corpus: 900, signal 74475/98894 (executing program) 2021/04/27 23:34:36 fetching corpus: 950, signal 75472/100989 (executing program) 2021/04/27 23:34:36 fetching corpus: 1000, signal 76553/103118 (executing program) 2021/04/27 23:34:36 fetching corpus: 1050, signal 77531/105173 (executing program) 2021/04/27 23:34:36 fetching corpus: 1100, signal 78556/107200 (executing program) 2021/04/27 23:34:36 fetching corpus: 1150, signal 79714/109333 (executing 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fetching corpus: 14198, signal 208468/209987 (executing program) 2021/04/27 23:34:44 fetching corpus: 14248, signal 208772/209987 (executing program) 2021/04/27 23:34:44 fetching corpus: 14296, signal 208923/209987 (executing program) 2021/04/27 23:34:44 fetching corpus: 14296, signal 208923/209987 (executing program) 2021/04/27 23:34:45 starting 6 fuzzer processes 23:34:45 executing program 0: r0 = socket$inet_tcp(0x2, 0x1, 0x0) sendmsg$inet6(0xffffffffffffffff, &(0x7f00000016c0)={0x0, 0x0, &(0x7f0000001640)=[{&(0x7f0000000040)="a90db1fa6edfee1dec65b01969c5a0986bfb5eee9476d40d9f7f8878625f839fabc77919533e95c91f7bf3", 0x2b}], 0x1}, 0x0) seccomp$SECCOMP_SET_MODE_FILTER_LISTENER(0x1, 0x0, &(0x7f00000000c0)={0x3, &(0x7f0000000080)=[{}, {}, {0x0, 0x0, 0x0, 0x6}]}) setsockopt(r0, 0x0, 0x40, &(0x7f0000000040), 0x0) 23:34:45 executing program 1: creat(&(0x7f0000000000)='./file0\x00', 0x0) prctl$PR_SET_PTRACER(0x59616d61, 0xffffffffffffffff) clone(0x100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff) r0 = gettid() wait4(0x0, 0x0, 0x80000002, 0x0) vmsplice(0xffffffffffffffff, &(0x7f00000000c0)=[{0x0}, {0x0}, {0x0}, {&(0x7f0000000340)="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", 0x10a}], 0x4, 0x0) ptrace$setopts(0x4206, r0, 0x0, 0x5) tkill(r0, 0x34) ptrace$cont(0x18, r0, 0x0, 0x0) sendmsg$unix(0xffffffffffffffff, &(0x7f00000006c0)={0x0, 0x0, &(0x7f00000000c0)=[{0x0}, {0x0}, {&(0x7f0000000480)="f7", 0x1}], 0x3}, 0x0) sendmsg$inet(0xffffffffffffffff, &(0x7f0000000140)={0x0, 0x0, &(0x7f0000000100)=[{&(0x7f0000000080)="4dc3", 0x2}], 0x1}, 0x0) ptrace$setregs(0xd, r0, 0x0, &(0x7f0000000080)) exit_group(0x0) 23:34:45 executing program 5: recvmmsg(0xffffffffffffffff, &(0x7f0000003140)=[{{&(0x7f0000000000)=@ipx, 0x80, 0x0, 0x0, 0x0, 0x58}}], 0x1, 0x0, 0x0) signalfd(0xffffffffffffffff, &(0x7f0000000200)={[0x463]}, 0x8) perf_event_open(&(0x7f0000000100)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3c43}, 0x0, 0x0, 0xffffffffffffffff, 0x0) r0 = syz_open_procfs(0x0, &(0x7f0000000080)='fdinfo/3\x00') preadv(r0, &(0x7f00000017c0), 0x333, 0x0, 0x0) 23:34:45 executing program 2: creat(&(0x7f0000000000)='./file0\x00', 0x0) clone(0x100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff) mount$9p_fd(0x0, &(0x7f0000000140)='./file0\x00', &(0x7f0000000080), 0x0, &(0x7f0000000240)={'trans=fd,', {}, 0x2c, {}, 0x64, {[], [{@context={'context', 0x2c, 'system_u'}}], 0x6b}}) 23:34:45 executing program 3: r0 = openat(0xffffffffffffff9c, &(0x7f0000000580)='/proc/self/exe\x00', 0x0, 0x0) mmap(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x1800003, 0x12, r0, 0x0) preadv(r0, &(0x7f0000000280), 0x18, 0xd9f, 0x0) r1 = socket$inet(0x10, 0x3, 0x0) sendmsg(r1, &(0x7f0000000040)={0x0, 0x0, &(0x7f0000009ff0)=[{&(0x7f0000000400)="240000002a0007031dfffd946fa2830020200a0009000000001d85680c1ba3a20400ff7e280000005e00ffffba16a0aa1c0009b3ebcd774a3c374a095dca5285307eadea8653a1cc7e63975c", 0x4c}], 0x1}, 0x0) 23:34:45 executing program 4: r0 = creat(&(0x7f0000000080)='./bus\x00', 0x0) ioctl$FS_IOC_SETFLAGS(r0, 0x40086602, &(0x7f0000000040)) ftruncate(r0, 0x208200) r1 = socket$inet6(0xa, 0x401000000001, 0x0) close(r1) r2 = open(&(0x7f0000000400)='./bus\x00', 0x1145042, 0x0) sendfile(r1, r2, 0x0, 0x8000fffffffa) open(&(0x7f0000000000)='./bus\x00', 0x200, 0x0) [ 28.944989][ T25] audit: type=1400 audit(1619566485.647:8): avc: denied { execmem } for pid=1769 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 29.147519][ T1775] cgroup: Unknown subsys name 'perf_event' [ 29.154021][ T1777] cgroup: Unknown subsys name 'perf_event' [ 29.160870][ T1775] cgroup: Unknown subsys name 'net_cls' [ 29.168752][ T1777] cgroup: Unknown subsys name 'net_cls' [ 29.170560][ T1776] cgroup: Unknown subsys name 'perf_event' [ 29.175642][ T1778] cgroup: Unknown subsys name 'perf_event' [ 29.187683][ T1778] cgroup: Unknown subsys name 'net_cls' [ 29.193407][ T1776] cgroup: Unknown subsys name 'net_cls' [ 29.200456][ T1783] cgroup: Unknown subsys name 'perf_event' [ 29.204261][ T1782] cgroup: Unknown subsys name 'perf_event' [ 29.206420][ T1783] cgroup: Unknown subsys name 'net_cls' [ 29.212301][ T1782] cgroup: Unknown subsys name 'net_cls'