./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3387150982 <...> Warning: Permanently added '10.128.1.33' (ED25519) to the list of known hosts. execve("./syz-executor3387150982", ["./syz-executor3387150982"], 0x7ffc71725500 /* 10 vars */) = 0 brk(NULL) = 0x555557297000 brk(0x555557297d40) = 0x555557297d40 arch_prctl(ARCH_SET_FS, 0x5555572973c0) = 0 set_tid_address(0x555557297690) = 5072 set_robust_list(0x5555572976a0, 24) = 0 rseq(0x555557297ce0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3387150982", 4096) = 28 getrandom("\x87\xb3\x07\xed\x01\xeb\x0a\x8c", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555557297d40 brk(0x5555572b8d40) = 0x5555572b8d40 brk(0x5555572b9000) = 0x5555572b9000 mprotect(0x7f71c78e5000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555557297690) = 5073 ./strace-static-x86_64: Process 5073 attached [pid 5073] set_robust_list(0x5555572976a0, 24) = 0 [pid 5073] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5073] socket(AF_BLUETOOTH, SOCK_RAW, BTPROTO_HCI) = 3 [pid 5073] openat(AT_FDCWD, "/dev/vhci", O_RDWR) = 4 [pid 5073] dup2(4, 202) = 202 [pid 5073] close(4) = 0 [pid 5073] write(202, "\xff\x00", 2) = 2 [pid 5073] read(202, "\xff\x00\x00\x00", 4) = 4 [pid 5073] rt_sigaction(SIGRT_1, {sa_handler=0x7f71c7886d40, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f71c78783c0}, NULL, 8) = 0 [pid 5073] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5073] mmap(NULL, 8392704, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f71c7021000 [pid 5073] mprotect(0x7f71c7022000, 8388608, PROT_READ|PROT_WRITE) = 0 [pid 5073] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5073] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f71c7821990, parent_tid=0x7f71c7821990, exit_signal=0, stack=0x7f71c7021000, stack_size=0x800300, tls=0x7f71c78216c0}./strace-static-x86_64: Process 5076 attached [pid 5076] rseq(0x7f71c7821fe0, 0x20, 0, 0x53053053 [pid 5073] <... clone3 resumed> => {parent_tid=[2]}, 88) = 2 [pid 5076] <... rseq resumed>) = 0 [pid 5073] rt_sigprocmask(SIG_SETMASK, [], [pid 5076] set_robust_list(0x7f71c78219a0, 24 [pid 5073] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5076] <... set_robust_list resumed>) = 0 [pid 5073] ioctl(3, HCIDEVUP [pid 5076] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5076] read(202, "\x01\x03\x0c\x00", 1024) = 4 [pid 5076] writev(202, [{iov_base="\x04", iov_len=1}, {iov_base="\x0e\xfc", iov_len=2}, {iov_base="\x01\x03\x0c", iov_len=3}, {iov_base="\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=249}], 4) = 255 [pid 5076] read(202, "\x01\x03\x10\x00", 1024) = 4 [pid 5076] writev(202, [{iov_base="\x04", iov_len=1}, {iov_base="\x0e\xfc", iov_len=2}, {iov_base="\x01\x03\x10", iov_len=3}, {iov_base="\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=249}], 4) = 255 [pid 5076] read(202, "\x01\x01\x10\x00", 1024) = 4 [pid 5076] writev(202, [{iov_base="\x04", iov_len=1}, {iov_base="\x0e\xfc", iov_len=2}, {iov_base="\x01\x01\x10", iov_len=3}, {iov_base="\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=249}], 4) = 255 [pid 5076] read(202, "\x01\x09\x10\x00", 1024) = 4 [pid 5076] writev(202, [{iov_base="\x04", iov_len=1}, {iov_base="\x0e\x0a", iov_len=2}, {iov_base="\x01\x09\x10", iov_len=3}, {iov_base="\x00\xaa\xaa\xaa\xaa\xaa\xaa", iov_len=7}], 4) = 13 [pid 5076] read(202, "\x01\x05\x10\x00", 1024) = 4 [pid 5076] writev(202, [{iov_base="\x04", iov_len=1}, {iov_base="\x0e\x0b", iov_len=2}, {iov_base="\x01\x05\x10", iov_len=3}, {iov_base="\x00\xfd\x03\x60\x04\x00\x06\x00", iov_len=8}], 4) = 14 [pid 5076] read(202, "\x01\x23\x0c\x00", 1024) = 4 [pid 5076] writev(202, [{iov_base="\x04", iov_len=1}, {iov_base="\x0e\xfc", iov_len=2}, {iov_base="\x01\x23\x0c", iov_len=3}, {iov_base="\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=249}], 4) = 255 [ 96.144759][ T5074] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 96.164116][ T5074] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 96.172589][ T5074] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [pid 5076] read(202, "\x01\x14\x0c\x00", 1024) = 4 [pid 5076] writev(202, [{iov_base="\x04", iov_len=1}, {iov_base="\x0e\xfc", iov_len=2}, {iov_base="\x01\x14\x0c", iov_len=3}, {iov_base="\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=249}], 4) = 255 [pid 5076] read(202, "\x01\x25\x0c\x00", 1024) = 4 [pid 5076] writev(202, [{iov_base="\x04", iov_len=1}, {iov_base="\x0e\xfc", iov_len=2}, {iov_base="\x01\x25\x0c", iov_len=3}, {iov_base="\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=249}], 4) = 255 [pid 5076] read(202, "\x01\x38\x0c\x00", 1024) = 4 [pid 5076] writev(202, [{iov_base="\x04", iov_len=1}, {iov_base="\x0e\xfc", iov_len=2}, {iov_base="\x01\x38\x0c", iov_len=3}, {iov_base="\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=249}], 4) = 255 [ 96.197345][ T5074] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 96.227914][ T5074] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3 [pid 5076] read(202, "\x01\x39\x0c\x00", 1024) = 4 [pid 5076] writev(202, [{iov_base="\x04", iov_len=1}, {iov_base="\x0e\xfc", iov_len=2}, {iov_base="\x01\x39\x0c", iov_len=3}, {iov_base="\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=249}], 4) = 255 [pid 5076] read(202, "\x01\x16\x0c\x02\x00\x7d", 1024) = 6 [pid 5076] writev(202, [{iov_base="\x04", iov_len=1}, {iov_base="\x0e\xfc", iov_len=2}, {iov_base="\x01\x16\x0c", iov_len=3}, {iov_base="\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=249}], 4) = 255 [pid 5076] read(202, [pid 5073] <... ioctl resumed>, 0) = -1 EALREADY (Operation already in progress) [pid 5073] ioctl(3, HCISETSCAN [pid 5076] <... read resumed>"\x01\x1a\x0c\x01\x02", 1024) = 5 [pid 5076] writev(202, [{iov_base="\x04", iov_len=1}, {iov_base="\x0e\x04", iov_len=2}, {iov_base="\x01\x1a\x0c", iov_len=3}, {iov_base="\x00", iov_len=1}], 4) = 7 [pid 5076] rt_sigprocmask(SIG_BLOCK, ~[RT_1], NULL, 8) = 0 [pid 5076] madvise(0x7f71c7021000, 8372224, MADV_DONTNEED [pid 5073] <... ioctl resumed>, 0x7ffd3d5451bc) = 0 [pid 5076] <... madvise resumed>) = 0 [pid 5076] exit(0) = ? [pid 5076] +++ exited with 0 +++ [pid 5073] writev(202, [{iov_base="\x04", iov_len=1}, {iov_base="\x04\x0a", iov_len=2}, {iov_base="\xaa\xaa\xaa\xaa\xaa\x10\x00\x00\x00\x01", iov_len=10}], 3) = 13 [pid 5073] writev(202, [{iov_base="\x04", iov_len=1}, {iov_base="\x03\x0b", iov_len=2}, {iov_base="\x00\xc8\x00\xaa\xaa\xaa\xaa\xaa\x10\x01\x00", iov_len=11}], 3) = 14 [pid 5073] writev(202, [{iov_base="\x04", iov_len=1}, {iov_base="\v\v", iov_len=2}, {iov_base="\x00\xc8\x00\x00\x00\x00\x00\x00\x00\x00\x00", iov_len=11}], 3) = 14 [ 96.249714][ T5074] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [pid 5073] writev(202, [{iov_base="\x04", iov_len=1}, {iov_base="\x3e\x13", iov_len=2}, {iov_base="\x01\x00\xc9\x00\x01\x00\xaa\xaa\xaa\xaa\xaa\x11\x00\x00\x00\x00\x00\x00\x00", iov_len=19}], 3) = 22 [pid 5073] close(3) = 0 [pid 5073] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5073] setsid() = 1 [pid 5073] openat(AT_FDCWD, "/proc/self/ns/net", O_RDONLY) = 3 [pid 5073] dup2(3, 201) = 201 [pid 5073] close(3) = 0 [pid 5073] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5073] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5073] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5073] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5073] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5073] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5073] unshare(CLONE_NEWNS) = 0 [pid 5073] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5073] unshare(CLONE_NEWIPC) = 0 [pid 5073] unshare(CLONE_NEWCGROUP) = 0 [pid 5073] unshare(CLONE_NEWUTS) = 0 [pid 5073] unshare(CLONE_SYSVSEM) = 0 [pid 5073] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5073] write(3, "16777216", 8) = 8 [pid 5073] close(3) = 0 [pid 5073] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5073] write(3, "536870912", 9) = 9 [pid 5073] close(3) = 0 [pid 5073] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5073] write(3, "1024", 4) = 4 [pid 5073] close(3) = 0 [pid 5073] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5073] write(3, "8192", 4) = 4 [pid 5073] close(3) = 0 [pid 5073] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5073] write(3, "1024", 4) = 4 [pid 5073] close(3) = 0 [pid 5073] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5073] write(3, "1024", 4) = 4 [pid 5073] close(3) = 0 [pid 5073] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5073] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5073] close(3) = 0 [pid 5073] getpid() = 1 [pid 5073] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [pid 5073] kill(-3, SIGKILL) = 0 [pid 5078] <... connect resumed>) = ? [pid 5073] kill(3, SIGKILL [pid 5078] +++ killed by SIGKILL +++ [pid 5073] <... kill resumed>) = 0 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=3, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} --- [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5080 attached , child_tidptr=0x555557297690) = 4 [pid 5080] set_robust_list(0x5555572976a0, 24) = 0 [pid 5080] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5080] setpgid(0, 0) = 0 [pid 5080] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5080] write(3, "1000", 4) = 4 [pid 5080] close(3) = 0 [pid 5080] openat(AT_FDCWD, "/proc/self/ns/net", O_RDONLY) = 3 [pid 5080] setns(201, 0) = 0 [pid 5080] socket(AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM) = 4 [pid 5080] setns(3, 0) = 0 [pid 5080] close(3) = 0 [ 102.509087][ T4465] Bluetooth: hci0: command 0x040f tx timeout [ 104.589133][ T4465] Bluetooth: hci0: command 0x0419 tx timeout [ 106.669491][ T4465] Bluetooth: hci0: command 0x0405 tx timeout [pid 5080] connect(4, {sa_family=AF_BLUETOOTH, rc_bdaddr=aa:aa:aa:aa:aa:00, rc_channel=1}, 10 [pid 5073] kill(-4, SIGKILL) = 0 [pid 5080] <... connect resumed>) = ? [pid 5073] kill(4, SIGKILL) = 0 [pid 5080] +++ killed by SIGKILL +++ [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=4, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555557297690) = 5 ./strace-static-x86_64: Process 5082 attached [pid 5082] set_robust_list(0x5555572976a0, 24) = 0 [pid 5082] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5082] setpgid(0, 0) = 0 [pid 5082] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5082] write(3, "1000", 4) = 4 [pid 5082] close(3) = 0 [pid 5082] openat(AT_FDCWD, "/proc/self/ns/net", O_RDONLY) = 3 [pid 5082] setns(201, 0) = 0 [pid 5082] socket(AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM) = 4 [pid 5082] setns(3, 0) = 0 [pid 5082] close(3) = 0 [pid 5082] connect(4, {sa_family=AF_BLUETOOTH, rc_bdaddr=aa:aa:aa:aa:aa:00, rc_channel=1}, 10 [pid 5073] kill(-5, SIGKILL) = 0 [pid 5082] <... connect resumed>) = ? [pid 5073] kill(5, SIGKILL) = 0 [pid 5082] +++ killed by SIGKILL +++ [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5085 attached , child_tidptr=0x555557297690) = 6 [pid 5085] set_robust_list(0x5555572976a0, 24) = 0 [pid 5085] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5085] setpgid(0, 0) = 0 [pid 5085] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5085] write(3, "1000", 4) = 4 [pid 5085] close(3) = 0 [pid 5085] openat(AT_FDCWD, "/proc/self/ns/net", O_RDONLY) = 3 [pid 5085] setns(201, 0) = 0 [pid 5085] socket(AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM) = 4 [pid 5085] setns(3, 0) = 0 [pid 5085] close(3) = 0 [pid 5085] connect(4, {sa_family=AF_BLUETOOTH, rc_bdaddr=aa:aa:aa:aa:aa:00, rc_channel=1}, 10 [pid 5073] kill(-6, SIGKILL [pid 5085] <... connect resumed>) = ? [pid 5073] <... kill resumed>) = 0 [pid 5073] kill(6, SIGKILL) = 0 [pid 5085] +++ killed by SIGKILL +++ [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=6, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} --- [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555557297690) = 7 ./strace-static-x86_64: Process 5088 attached [pid 5088] set_robust_list(0x5555572976a0, 24) = 0 [pid 5088] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5088] setpgid(0, 0) = 0 [pid 5088] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5088] write(3, "1000", 4) = 4 [pid 5088] close(3) = 0 [pid 5088] openat(AT_FDCWD, "/proc/self/ns/net", O_RDONLY) = 3 [pid 5088] setns(201, 0) = 0 [pid 5088] socket(AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM) = 4 [pid 5088] setns(3, 0) = 0 [pid 5088] close(3) = 0 [pid 5088] connect(4, {sa_family=AF_BLUETOOTH, rc_bdaddr=aa:aa:aa:aa:aa:00, rc_channel=1}, 10 [pid 5073] kill(-7, SIGKILL [pid 5088] <... connect resumed>) = ? [pid 5073] <... kill resumed>) = 0 [pid 5073] kill(7, SIGKILL) = 0 [pid 5088] +++ killed by SIGKILL +++ [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=7, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} --- [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5090 attached , child_tidptr=0x555557297690) = 8 [pid 5090] set_robust_list(0x5555572976a0, 24) = 0 [pid 5090] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5090] setpgid(0, 0) = 0 [pid 5090] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5090] write(3, "1000", 4) = 4 [pid 5090] close(3) = 0 [pid 5090] openat(AT_FDCWD, "/proc/self/ns/net", O_RDONLY) = 3 [pid 5090] setns(201, 0) = 0 [pid 5090] socket(AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM) = 4 [pid 5090] setns(3, 0) = 0 [pid 5090] close(3) = 0 [pid 5090] connect(4, {sa_family=AF_BLUETOOTH, rc_bdaddr=aa:aa:aa:aa:aa:00, rc_channel=1}, 10 [pid 5073] kill(-8, SIGKILL) = 0 [pid 5090] <... connect resumed>) = ? [pid 5073] kill(8, SIGKILL) = 0 [pid 5090] +++ killed by SIGKILL +++ [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=8, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} --- [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5093 attached [pid 5093] set_robust_list(0x5555572976a0, 24) = 0 [pid 5073] <... clone resumed>, child_tidptr=0x555557297690) = 9 [pid 5093] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5093] setpgid(0, 0) = 0 [pid 5093] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5093] write(3, "1000", 4) = 4 [pid 5093] close(3) = 0 [pid 5093] openat(AT_FDCWD, "/proc/self/ns/net", O_RDONLY) = 3 [pid 5093] setns(201, 0) = 0 [pid 5093] socket(AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM) = 4 [pid 5093] setns(3, 0) = 0 [pid 5093] close(3) = 0 [pid 5093] connect(4, {sa_family=AF_BLUETOOTH, rc_bdaddr=aa:aa:aa:aa:aa:00, rc_channel=1}, 10 [pid 5073] kill(-9, SIGKILL [pid 5093] <... connect resumed>) = ? [pid 5073] <... kill resumed>) = 0 [pid 5073] kill(9, SIGKILL [pid 5093] +++ killed by SIGKILL +++ [pid 5073] <... kill resumed>) = 0 [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=9, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5101 attached , child_tidptr=0x555557297690) = 10 [pid 5101] set_robust_list(0x5555572976a0, 24) = 0 [pid 5101] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5101] setpgid(0, 0) = 0 [pid 5101] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5101] write(3, "1000", 4) = 4 [pid 5101] close(3) = 0 [pid 5101] openat(AT_FDCWD, "/proc/self/ns/net", O_RDONLY) = 3 [pid 5101] setns(201, 0) = 0 [pid 5101] socket(AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM) = 4 [pid 5101] setns(3, 0) = 0 [pid 5101] close(3) = 0 [pid 5101] connect(4, {sa_family=AF_BLUETOOTH, rc_bdaddr=aa:aa:aa:aa:aa:00, rc_channel=1}, 10 [pid 5073] kill(-10, SIGKILL) = 0 [pid 5073] kill(10, SIGKILL) = 0 [pid 5101] <... connect resumed>) = ? [pid 5101] +++ killed by SIGKILL +++ [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=10, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} --- [pid 5073] restart_syscall(<... resuming interrupted kill ...>) = 0 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5102 attached , child_tidptr=0x555557297690) = 11 [pid 5102] set_robust_list(0x5555572976a0, 24) = 0 [pid 5102] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5102] setpgid(0, 0) = 0 [pid 5102] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5102] write(3, "1000", 4) = 4 [pid 5102] close(3) = 0 [pid 5102] openat(AT_FDCWD, "/proc/self/ns/net", O_RDONLY) = 3 [pid 5102] setns(201, 0) = 0 [pid 5102] socket(AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM) = 4 [pid 5102] setns(3, 0) = 0 [pid 5102] close(3) = 0 [pid 5102] connect(4, {sa_family=AF_BLUETOOTH, rc_bdaddr=aa:aa:aa:aa:aa:00, rc_channel=1}, 10) = -1 ECONNREFUSED (Connection refused) [pid 5102] getsockopt(-1, SOL_IPV6, IPV6_FLOWLABEL_MGR, 0x20000100, NULL) = -1 EBADF (Bad file descriptor) [pid 5102] openat(AT_FDCWD, "/proc/self/ns/net", O_RDONLY) = 3 [pid 5102] setns(201, 0) = 0 [pid 5102] socket(AF_BLUETOOTH, SOCK_RAW, BTPROTO_RFCOMM) = 5 [pid 5102] setns(3, 0) = 0 [pid 5102] close(3) = 0 [ 137.180529][ T5102] [ 137.182909][ T5102] ====================================================== [ 137.189949][ T5102] WARNING: possible circular locking dependency detected [ 137.196968][ T5102] 6.6.0-syzkaller-15890-g48c205c69ac9 #0 Not tainted [ 137.203653][ T5102] ------------------------------------------------------ [ 137.210673][ T5102] syz-executor338/5102 is trying to acquire lock: [ 137.217087][ T5102] ffffffff8ed39b08 (rfcomm_mutex){+.+.}-{3:3}, at: rfcomm_dlc_exists+0x5b/0x190 [ 137.226185][ T5102] [ 137.226185][ T5102] but task is already holding lock: [ 137.233553][ T5102] ffffffff8ed3ea88 (rfcomm_ioctl_mutex){+.+.}-{3:3}, at: rfcomm_dev_ioctl+0x8b9/0x1c50 [ 137.243432][ T5102] [ 137.243432][ T5102] which lock already depends on the new lock. [ 137.243432][ T5102] [ 137.253923][ T5102] [ 137.253923][ T5102] the existing dependency chain (in reverse order) is: [ 137.262936][ T5102] [ 137.262936][ T5102] -> #3 (rfcomm_ioctl_mutex){+.+.}-{3:3}: [ 137.270876][ T5102] __mutex_lock+0x175/0x9d0 [ 137.275926][ T5102] rfcomm_dev_ioctl+0x8b9/0x1c50 [ 137.281403][ T5102] rfcomm_sock_ioctl+0xb0/0xe0 [ 137.286712][ T5102] sock_do_ioctl+0x113/0x270 [ 137.291838][ T5102] sock_ioctl+0x22e/0x6b0 [ 137.296710][ T5102] __x64_sys_ioctl+0x18f/0x210 [ 137.302282][ T5102] do_syscall_64+0x40/0x110 [ 137.307321][ T5102] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 137.313858][ T5102] [ 137.313858][ T5102] -> #2 (sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM){+.+.}-{0:0}: [ 137.323257][ T5102] lock_sock_nested+0x3a/0xf0 [ 137.328469][ T5102] rfcomm_sk_state_change+0x6d/0x3a0 [ 137.334293][ T5102] __rfcomm_dlc_close+0x285/0x720 [ 137.339847][ T5102] rfcomm_dlc_close+0x1e7/0x240 [ 137.345229][ T5102] __rfcomm_sock_close+0xa7/0x230 [ 137.350801][ T5102] rfcomm_sock_shutdown+0xd1/0x230 [ 137.356444][ T5102] rfcomm_sock_release+0x5d/0x140 [ 137.362003][ T5102] __sock_release+0xae/0x260 [ 137.367133][ T5102] sock_close+0x1c/0x20 [ 137.371840][ T5102] __fput+0x270/0xbb0 [ 137.376374][ T5102] task_work_run+0x14d/0x240 [ 137.381497][ T5102] do_exit+0xa92/0x2ae0 [ 137.386201][ T5102] do_group_exit+0xd4/0x2a0 [ 137.391265][ T5102] get_signal+0x23be/0x2790 [ 137.396322][ T5102] arch_do_signal_or_restart+0x90/0x7f0 [ 137.402415][ T5102] exit_to_user_mode_prepare+0x121/0x240 [ 137.408607][ T5102] syscall_exit_to_user_mode+0x1e/0x60 [ 137.414612][ T5102] do_syscall_64+0x4d/0x110 [ 137.419670][ T5102] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 137.426216][ T5102] [ 137.426216][ T5102] -> #1 (&d->lock){+.+.}-{3:3}: [ 137.433289][ T5102] __mutex_lock+0x175/0x9d0 [ 137.438856][ T5102] __rfcomm_dlc_close+0x231/0x720 [ 137.444412][ T5102] rfcomm_dlc_close+0x1e7/0x240 [ 137.449969][ T5102] __rfcomm_sock_close+0xa7/0x230 [ 137.455530][ T5102] rfcomm_sock_shutdown+0xd1/0x230 [ 137.461222][ T5102] rfcomm_sock_release+0x5d/0x140 [ 137.466795][ T5102] __sock_release+0xae/0x260 [ 137.471941][ T5102] sock_close+0x1c/0x20 [ 137.476668][ T5102] __fput+0x270/0xbb0 [ 137.481194][ T5102] task_work_run+0x14d/0x240 [ 137.486337][ T5102] do_exit+0xa92/0x2ae0 [ 137.491027][ T5102] do_group_exit+0xd4/0x2a0 [ 137.496062][ T5102] get_signal+0x23be/0x2790 [ 137.501105][ T5102] arch_do_signal_or_restart+0x90/0x7f0 [ 137.507214][ T5102] exit_to_user_mode_prepare+0x121/0x240 [ 137.513396][ T5102] syscall_exit_to_user_mode+0x1e/0x60 [ 137.519417][ T5102] do_syscall_64+0x4d/0x110 [ 137.524480][ T5102] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 137.530951][ T5102] [ 137.530951][ T5102] -> #0 (rfcomm_mutex){+.+.}-{3:3}: [ 137.538351][ T5102] __lock_acquire+0x2464/0x3b10 [ 137.543863][ T5102] lock_acquire+0x1ae/0x520 [ 137.548951][ T5102] __mutex_lock+0x175/0x9d0 [ 137.554020][ T5102] rfcomm_dlc_exists+0x5b/0x190 [ 137.559405][ T5102] rfcomm_dev_ioctl+0x999/0x1c50 [ 137.564898][ T5102] rfcomm_sock_ioctl+0xb0/0xe0 [ 137.570207][ T5102] sock_do_ioctl+0x113/0x270 [ 137.575380][ T5102] sock_ioctl+0x22e/0x6b0 [ 137.580247][ T5102] __x64_sys_ioctl+0x18f/0x210 [ 137.585559][ T5102] do_syscall_64+0x40/0x110 [ 137.590607][ T5102] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 137.597135][ T5102] [ 137.597135][ T5102] other info that might help us debug this: [ 137.597135][ T5102] [ 137.607371][ T5102] Chain exists of: [ 137.607371][ T5102] rfcomm_mutex --> sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM --> rfcomm_ioctl_mutex [ 137.607371][ T5102] [ 137.622176][ T5102] Possible unsafe locking scenario: [ 137.622176][ T5102] [ 137.629723][ T5102] CPU0 CPU1 [ 137.635103][ T5102] ---- ---- [ 137.640468][ T5102] lock(rfcomm_ioctl_mutex); [ 137.645160][ T5102] lock(sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM); [ 137.653846][ T5102] lock(rfcomm_ioctl_mutex); [ 137.661053][ T5102] lock(rfcomm_mutex); [ 137.665568][ T5102] [ 137.665568][ T5102] *** DEADLOCK *** [ 137.665568][ T5102] [ 137.673715][ T5102] 2 locks held by syz-executor338/5102: [ 137.679286][ T5102] #0: ffff888075e6e130 (sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM){+.+.}-{0:0}, at: rfcomm_sock_ioctl+0xa3/0xe0 [ 137.690742][ T5102] #1: ffffffff8ed3ea88 (rfcomm_ioctl_mutex){+.+.}-{3:3}, at: rfcomm_dev_ioctl+0x8b9/0x1c50 [ 137.700889][ T5102] [ 137.700889][ T5102] stack backtrace: [ 137.706812][ T5102] CPU: 1 PID: 5102 Comm: syz-executor338 Not tainted 6.6.0-syzkaller-15890-g48c205c69ac9 #0 [ 137.717160][ T5102] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 [ 137.727240][ T5102] Call Trace: [ 137.730530][ T5102] [ 137.733464][ T5102] dump_stack_lvl+0xd9/0x1b0 [ 137.738095][ T5102] check_noncircular+0x317/0x400 [ 137.743067][ T5102] ? print_circular_bug+0x5c0/0x5c0 [ 137.748288][ T5102] ? __kernel_text_address+0xd/0x30 [ 137.753531][ T5102] ? unwind_get_return_address+0x45/0xe0 [ 137.759189][ T5102] ? lockdep_lock+0xc6/0x200 [ 137.763805][ T5102] ? hlock_class+0x130/0x130 [ 137.768418][ T5102] __lock_acquire+0x2464/0x3b10 [ 137.773303][ T5102] ? lockdep_hardirqs_on_prepare+0x420/0x420 [ 137.779326][ T5102] ? add_lock_to_list+0x17d/0x380 [ 137.784464][ T5102] lock_acquire+0x1ae/0x520 [ 137.789072][ T5102] ? rfcomm_dlc_exists+0x5b/0x190 [ 137.794112][ T5102] ? lock_sync+0x190/0x190 [ 137.798558][ T5102] ? __mutex_trylock_common+0xeb/0x250 [ 137.804117][ T5102] ? preempt_count_sub+0x160/0x160 [ 137.809273][ T5102] ? mutex_is_locked+0x40/0x40 [ 137.814100][ T5102] __mutex_lock+0x175/0x9d0 [ 137.818644][ T5102] ? rfcomm_dlc_exists+0x5b/0x190 [ 137.823688][ T5102] ? aa_get_newest_label+0x376/0x680 [ 137.829027][ T5102] ? rfcomm_dlc_exists+0x5b/0x190 [ 137.834176][ T5102] ? mutex_trylock+0x130/0x130 [ 137.838972][ T5102] ? reacquire_held_locks+0x4c0/0x4c0 [ 137.844417][ T5102] ? apparmor_capable+0x126/0x1e0 [ 137.849557][ T5102] ? rfcomm_dlc_exists+0x5b/0x190 [ 137.854597][ T5102] rfcomm_dlc_exists+0x5b/0x190 [ 137.859465][ T5102] rfcomm_dev_ioctl+0x999/0x1c50 [ 137.864425][ T5102] ? rfcomm_dev_state_change+0x170/0x170 [ 137.870093][ T5102] ? reacquire_held_locks+0x4c0/0x4c0 [ 137.875593][ T5102] ? mark_held_locks+0x9f/0xe0 [ 137.880382][ T5102] ? __local_bh_enable_ip+0xa4/0x120 [ 137.886049][ T5102] rfcomm_sock_ioctl+0xb0/0xe0 [ 137.890842][ T5102] sock_do_ioctl+0x113/0x270 [ 137.895473][ T5102] ? put_user_ifreq+0x140/0x140 [ 137.900342][ T5102] ? do_vfs_ioctl+0x379/0x1920 [ 137.905133][ T5102] ? vfs_fileattr_set+0xbf0/0xbf0 [ 137.910242][ T5102] sock_ioctl+0x22e/0x6b0 [ 137.914633][ T5102] ? br_ioctl_call+0xb0/0xb0 [ 137.919251][ T5102] ? restore_fpregs_from_fpstate+0xc1/0x1d0 [ 137.925180][ T5102] ? bpf_lsm_file_ioctl+0x9/0x10 [ 137.930137][ T5102] ? br_ioctl_call+0xb0/0xb0 [ 137.934745][ T5102] __x64_sys_ioctl+0x18f/0x210 [ 137.939536][ T5102] do_syscall_64+0x40/0x110 [ 137.944060][ T5102] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 137.949993][ T5102] RIP: 0033:0x7f71c7860d49 [ 137.954423][ T5102] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 19 00 00 90 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 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 [ 137.974137][ T5102] RSP: 002b:00007ffd3d545188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [pid 5102] ioctl(5, RFCOMMCREATEDEV, 0x20000100) = -1 ENFILE (Too many open files in system) [pid 5102] close(3) = -1 EBADF (Bad file descriptor) [pid 5102] close(4) = 0 [pid 5102] close(5) = 0 [pid 5102] close(6) = -1 EBADF (Bad file descriptor) [pid 5102] close(7) = -1 EBADF (Bad file descriptor) [pid 5102] close(8) = -1 EBADF (Bad file descriptor) [pid 5102] close(9) = -1 EBADF (Bad file descriptor) [pid 5102] close(10) = -1 EBADF (Bad file descriptor) [pid 5102] close(11) = -1 EBADF (Bad file descriptor) [pid 5102] close(12) = -1 EBADF (Bad file descriptor) [pid 5102] close(13) = -1 EBADF (Bad file descriptor) [ 137.982575][ T5102] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f71c7860d49 [ 137.990579][ T5102] RDX: 0000000020000100 RSI: 00000000400452c8 RDI: 0000000000000005 [ 137.998560][ T5102] RBP: 00000000000f4240 R08: 0000000000000000 R09: 0000555500000000 [ 138.006542][ T5102] R10: 0000555500000000 R11: 0000000000000246 R12: 00007ffd3d5451d0 [ 138.014542][ T5102] R13: 00007ffd3d5451e0 R14: 0000000000020385 R15: 00007ffd3d5451a0 [ 138.022544][ T5102] [pid 5102] close(14) = -1 EBADF (Bad file descriptor) [pid 5102] close(15) = -1 EBADF (Bad file descriptor) [pid 5102] close(16) = -1 EBADF (Bad file descriptor) [pid 5102] close(17) = -1 EBADF (Bad file descriptor) [pid 5102] close(18) = -1 EBADF (Bad file descriptor) [pid 5102] close(19) = -1 EBADF (Bad file descriptor) [pid 5102] close(20) = -1 EBADF (Bad file descriptor) [pid 5102] close(21) = -1 EBADF (Bad file descriptor) [pid 5102] close(22) = -1 EBADF (Bad file descriptor) [pid 5102] close(23) = -1 EBADF (Bad file descriptor) [pid 5102] close(24) = -1 EBADF (Bad file descriptor) [pid 5102] close(25) = -1 EBADF (Bad file descriptor) [pid 5102] close(26) = -1 EBADF (Bad file descriptor) [pid 5102] close(27) = -1 EBADF (Bad file descriptor) [pid 5102] close(28) = -1 EBADF (Bad file descriptor) [pid 5102] close(29) = -1 EBADF (Bad file descriptor) [pid 5102] exit_group(0) = ? [pid 5102] +++ exited with 0 +++ [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 5073] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5103 attached , child_tidptr=0x555557297690) = 12 [pid 5103] set_robust_list(0x5555572976a0, 24) = 0 [pid 5103] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5103] setpgid(0, 0) = 0 [pid 5103] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5103] write(3, "1000", 4) = 4 [pid 5103] close(3) = 0 [pid 5103] openat(AT_FDCWD, "/proc/self/ns/net", O_RDONLY) = 3 [pid 5103] setns(201, 0) = 0 [pid 5103] socket(AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM) = 4 [pid 5103] setns(3, 0) = 0 [pid 5103] close(3) = 0 [ 140.269157][ T4465] Bluetooth: hci0: command 0x0405 tx timeout [pid 5103] connect(4, {sa_family=AF_BLUETOOTH, rc_bdaddr=aa:aa:aa:aa:aa:00, rc_channel=1}, 10 [pid 5073] kill(-12, SIGKILL) = 0 [pid 5103] <... connect resumed>) = ? [pid 5073] kill(12, SIGKILL) = 0 [pid 5103] +++ killed by SIGKILL +++ [pid 5073] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=12, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=1 /* 0.01 s */} --- [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5104 attached , child_tidptr=0x555557297690) = 13 [pid 5104] set_robust_list(0x5555572976a0, 24) = 0 [pid 5104] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5104] setpgid(0, 0) = 0 [pid 5104] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5104] write(3, "1000", 4) = 4 [pid 5104] close(3) = 0 [pid 5104] openat(AT_FDCWD, "/proc/self/ns/net", O_RDONLY) = 3 [pid 5104] setns(201, 0) = 0 [pid 5104] socket(AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM) = 4 [pid 5104] setns(3, 0) = 0 [pid 5104] close(3) = 0