Warning: Permanently added '10.128.1.15' (ECDSA) to the list of known hosts. 2021/05/22 18:49:49 fuzzer started 2021/05/22 18:49:49 dialing manager at 10.128.0.163:43627 2021/05/22 18:49:50 syscalls: 1997 2021/05/22 18:49:50 code coverage: enabled 2021/05/22 18:49:50 comparison tracing: enabled 2021/05/22 18:49:50 extra coverage: enabled 2021/05/22 18:49:50 setuid sandbox: enabled 2021/05/22 18:49:50 namespace sandbox: enabled 2021/05/22 18:49:50 Android sandbox: enabled 2021/05/22 18:49:50 fault injection: enabled 2021/05/22 18:49:50 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2021/05/22 18:49:50 net packet injection: /dev/net/tun does not exist 2021/05/22 18:49:50 net device setup: enabled 2021/05/22 18:49:50 concurrency sanitizer: enabled 2021/05/22 18:49:50 devlink PCI setup: PCI device 0000:00:10.0 is not available 2021/05/22 18:49:50 USB emulation: /dev/raw-gadget does not exist 2021/05/22 18:49:50 hci packet injection: /dev/vhci does not exist 2021/05/22 18:49:50 wifi device emulation: /sys/class/mac80211_hwsim/ does not exist 2021/05/22 18:49:50 802.15.4 emulation: /sys/bus/platform/devices/mac802154_hwsim does not exist 2021/05/22 18:49:51 suppressing KCSAN reports in functions: 'blk_mq_sched_dispatch_requests' 'ext4_free_inodes_count' 'alloc_pid' 'do_nanosleep' '__lru_add_drain_all' 'shmem_file_read_iter' 'xas_clear_mark' '__mark_inode_dirty' '__ext4_new_inode' 'do_signal_stop' 'n_tty_receive_buf_common' '__xa_clear_mark' 'generic_write_end' 'kcompactd' 'blk_mq_rq_ctx_init' 'step_into' '_find_next_bit' 'exit_mm' 'do_sys_poll' 2021/05/22 18:49:51 fetching corpus: 0, signal 0/2000 (executing program) 2021/05/22 18:49:51 fetching corpus: 47, signal 14277/17988 (executing program) 2021/05/22 18:49:51 fetching corpus: 95, signal 21843/27187 (executing program) [ 19.632033][ T1756] ================================================================== [ 19.635089][ T1756] BUG: KCSAN: data-race in futex_wait_queue_me / prepare_signal [ 19.637774][ T1756] [ 19.638541][ T1756] write to 0xffff888106cfa0ac of 4 bytes by task 1747 on cpu 1: [ 19.641194][ T1756] futex_wait_queue_me+0x198/0x260 [ 19.642802][ T1756] futex_wait+0x143/0x430 [ 19.644706][ T1756] do_futex+0x9d8/0x1ee0 [ 19.646184][ T1756] __se_sys_futex+0x21c/0x380 [ 19.648206][ T1756] __x64_sys_futex+0x74/0x80 [ 19.649876][ T1756] do_syscall_64+0x4a/0x90 [ 19.651393][ T1756] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 19.655713][ T1756] [ 19.658021][ T1756] read to 0xffff888106cfa0ac of 4 bytes by task 1756 on cpu 0: [ 19.665539][ T1756] prepare_signal+0x952/0xeb0 [ 19.670200][ T1756] __send_signal+0x64/0x760 [ 19.674777][ T1756] send_signal+0x281/0x390 [ 19.679267][ T1756] do_send_specific+0x13d/0x1c0 [ 19.684103][ T1756] __x64_sys_tgkill+0x108/0x140 [ 19.688933][ T1756] do_syscall_64+0x4a/0x90 [ 19.693328][ T1756] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 19.699205][ T1756] [ 19.701512][ T1756] Reported by Kernel Concurrency Sanitizer on: [ 19.707640][ T1756] CPU: 0 PID: 1756 Comm: syz-fuzzer Not tainted 5.13.0-rc2-syzkaller #0 [ 19.715945][ T1756] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 2021/05/22 18:49:51 fetching corpus: 145, signal 27812/34649 (executing program) [ 19.725980][ T1756] ================================================================== 2021/05/22 18:49:51 fetching corpus: 195, signal 32978/41222 (executing program) 2021/05/22 18:49:51 fetching corpus: 245, signal 36469/46125 (executing program) 2021/05/22 18:49:51 fetching corpus: 295, signal 41236/52120 (executing program) 2021/05/22 18:49:51 fetching corpus: 345, signal 47245/59137 (executing program) 2021/05/22 18:49:51 fetching corpus: 395, signal 51283/64269 (executing program) 2021/05/22 18:49:51 fetching corpus: 445, signal 53218/67459 (executing program) 2021/05/22 18:49:51 fetching corpus: 495, signal 57422/72539 (executing program) 2021/05/22 18:49:51 fetching corpus: 545, signal 60963/76985 (executing program) 2021/05/22 18:49:51 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18:49:57 fetching corpus: 8328, signal 182925/184134 (executing program) 2021/05/22 18:49:57 fetching corpus: 8328, signal 182925/184134 (executing program) 2021/05/22 18:49:58 starting 6 fuzzer processes 18:49:58 executing program 0: r0 = gettid() r1 = openat$sndseq(0xffffffffffffff9c, &(0x7f0000000000), 0x0) read(r1, &(0x7f0000000080)=""/238, 0xee) ioctl$SNDRV_SEQ_IOCTL_REMOVE_EVENTS(r1, 0x4040534e, &(0x7f0000000300)={0x1}) ioctl$SNDRV_SEQ_IOCTL_QUERY_NEXT_CLIENT(r1, 0xc0bc5351, &(0x7f0000000240)={0x40, 0x0, 'client0\x00', 0x0, '\x00', "9e9add91b785083069c5c19aa04c37d1dfa783a54643c47600018bac9c1187ba"}) ioctl$SNDRV_SEQ_IOCTL_SET_QUEUE_TIMER(r1, 0x40605346, &(0x7f0000000340)) tkill(r0, 0x7) 18:49:58 executing program 1: r0 = socket$inet6(0xa, 0x1, 0x0) setsockopt$inet6_IPV6_FLOWLABEL_MGR(r0, 0x29, 0x20, &(0x7f0000000040)={@rand_addr=' \x01\x00'}, 0x30) 18:49:58 executing program 5: r0 = perf_event_open(&(0x7f0000000040)={0x2, 0x80, 0x6a, 0x1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_bp={0x0}}, 0x0, 0x0, 0xffffffffffffffff, 0x0) r1 = socket$nl_netfilter(0x10, 0x3, 0xc) r2 = openat$hwrng(0xffffffffffffff9c, &(0x7f0000000000), 0x2, 0x0) ioctl$PERF_EVENT_IOC_SET_OUTPUT(r2, 0x2405, r0) sendmsg$IPCTNL_MSG_CT_NEW(r1, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000040)={&(0x7f0000000180)={0x84, 0x0, 0x1, 0x401, 0x0, 0x0, {0x2}, [@CTA_TUPLE_ORIG={0x24, 0x1, 0x0, 0x1, [@CTA_TUPLE_IP={0x14, 0x1, 0x0, 0x1, @ipv4={{0x8, 0x1, @multicast1}, {0x8}}}, @CTA_TUPLE_PROTO={0xc, 0x2, 0x0, 0x1, {0x5}}]}, @CTA_TUPLE_REPLY={0x24, 0x2, 0x0, 0x1, [@CTA_TUPLE_IP={0x14, 0x1, 0x0, 0x1, @ipv4={{0x8, 0x1, @multicast1}, {0x8, 0x2, @initdev={0xac, 0x1e, 0x0, 0x0}}}}, @CTA_TUPLE_PROTO={0xc, 0x2, 0x0, 0x1, {0x5}}]}, @CTA_TIMEOUT={0x8}, @CTA_NAT_SRC={0x20, 0x6, 0x0, 0x1, [@CTA_NAT_PROTO={0x14, 0x3, 0x0, 0x1, [@CTA_PROTONAT_PORT_MIN={0x6}, @CTA_PROTONAT_PORT_MIN={0x6}]}, @CTA_NAT_V4_MINIP={0x8, 0x1, @initdev={0xac, 0x1e, 0x0, 0x0}}]}]}, 0x84}}, 0x0) 18:49:58 executing program 2: r0 = creat(&(0x7f0000000100)='./bus\x00', 0x0) r1 = creat(&(0x7f00000001c0)='./bus\x00', 0x0) r2 = creat(&(0x7f0000000000)='./bus\x00', 0x0) ioctl$FS_IOC_SETFLAGS(r2, 0x40086602, &(0x7f0000000040)) lseek(r1, 0x7ffffe, 0x0) r3 = openat(0xffffffffffffff9c, &(0x7f0000000000)='/proc/self/exe\x00', 0x0, 0x0) mmap(&(0x7f0000000000/0x800000)=nil, 0x800000, 0x1800003, 0x12, r3, 0x0) preadv(r3, &(0x7f0000000280), 0x18, 0xd9f, 0x0) write$binfmt_elf64(r1, &(0x7f00000002c0)=ANY=[], 0x1a0) fallocate(r0, 0x100000003, 0x80019b, 0x80019c) lseek(r0, 0x0, 0x3) 18:49:58 executing program 3: r0 = gettid() r1 = openat$ptp0(0xffffffffffffff9c, &(0x7f00000002c0), 0x0, 0x0) preadv(r1, &(0x7f0000000980)=[{&(0x7f00000003c0)=""/160, 0xa0}], 0x1, 0x0, 0x0) close(r1) tkill(r0, 0x7) 18:49:58 executing program 4: r0 = socket(0x10, 0x3, 0x0) setsockopt$netlink_NETLINK_TX_RING(r0, 0x10e, 0xc, &(0x7f0000000280)={0x6ae5}, 0x10) sendmsg$nl_generic(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000580)={0x20, 0x16, 0xa01, 0x0, 0x0, {0xa}, [@nested={0xc, 0x0, 0x0, 0x1, [@typed={0x8, 0x9, 0x0, 0x0, @u32}]}]}, 0x20}}, 0x0) [ 27.017801][ T25] audit: type=1400 audit(1621709398.805:8): avc: denied { execmem } for pid=1761 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 27.065754][ T1765] cgroup: Unknown subsys name 'perf_event' [ 27.082765][ T1765] cgroup: Unknown subsys name 'net_cls' [ 27.153631][ T1770] cgroup: Unknown subsys name 'perf_event' [ 27.159695][ T1770] cgroup: Unknown subsys name 'net_cls' [ 27.166378][ T1773] cgroup: Unknown subsys name 'perf_event' [ 27.172346][ T1773] cgroup: Unknown subsys name 'net_cls' [ 27.204562][ T1782] cgroup: Unknown subsys name 'perf_event' [ 27.210575][ T1782] cgroup: Unknown subsys name 'net_cls' [ 27.212123][ T1778] cgroup: Unknown subsys name 'perf_event' [ 27.228772][ T1778] cgroup: Unknown subsys name 'net_cls' [ 27.236324][ T1793] cgroup: Unknown subsys name 'perf_event' [ 27.242268][ T1793] cgroup: Unknown subsys name 'net_cls'