./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3638744838

<...>
forked to background, child pid 4659
no interfaces have a carrier
[   51.277344][ T4660] 8021q: adding VLAN 0 to HW filter on device bond0
[   51.296474][ T4660] eql: remember to turn off Van-Jacobson compression on your slave devices
Starting sshd: OK

syzkaller
Warning: Permanently added '10.128.1.26' (ECDSA) to the list of known hosts.
execve("./syz-executor3638744838", ["./syz-executor3638744838"], 0x7ffcf28c72b0 /* 10 vars */) = 0
brk(NULL)                               = 0x5555570e9000
brk(0x5555570e9c40)                     = 0x5555570e9c40
arch_prctl(ARCH_SET_FS, 0x5555570e9300) = 0
uname({sysname="Linux", nodename="syzkaller", ...}) = 0
set_tid_address(0x5555570e95d0)         = 5085
set_robust_list(0x5555570e95e0, 24)     = 0
rt_sigaction(SIGRTMIN, {sa_handler=0x7fdd90d84bb0, sa_mask=[], sa_flags=SA_RESTORER|SA_SIGINFO, sa_restorer=0x7fdd90d85280}, NULL, 8) = 0
rt_sigaction(SIGRT_1, {sa_handler=0x7fdd90d84c50, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fdd90d85280}, NULL, 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor3638744838", 4096) = 28
brk(0x55555710ac40)                     = 0x55555710ac40
brk(0x55555710b000)                     = 0x55555710b000
mprotect(0x7fdd90e46000, 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./strace-static-x86_64: Process 5086 attached
, child_tidptr=0x5555570e95d0) = 5086
[pid  5086] set_robust_list(0x5555570e95e0, 24) = 0
[pid  5086] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy)
[pid  5086] socket(AF_BLUETOOTH, SOCK_RAW, BTPROTO_HCI) = 3
[pid  5086] openat(AT_FDCWD, "/dev/vhci", O_RDWR) = 4
[pid  5086] dup2(4, 202)                = 202
[pid  5086] close(4)                    = 0
[pid  5086] write(202, "\xff\x00", 2)   = 2
[pid  5086] read(202, "\xff\x00\x00\x00", 4) = 4
[pid  5086] mmap(NULL, 8392704, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fdd90574000
[pid  5086] mprotect(0x7fdd90575000, 8388608, PROT_READ|PROT_WRITE) = 0
[pid  5086] clone(child_stack=0x7fdd90d743f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[2], tls=0x7fdd90d74700, child_tidptr=0x7fdd90d749d0) = 2
[pid  5086] ioctl(3, HCIDEVUP./strace-static-x86_64: Process 5089 attached
 <unfinished ...>
[pid  5089] set_robust_list(0x7fdd90d749e0, 24) = 0
[pid  5089] read(202, "\x01\x03\x0c\x00", 1024) = 4
[pid  5089] 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  5089] read(202, "\x01\x03\x10\x00", 1024) = 4
[pid  5089] 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  5089] read(202, "\x01\x01\x10\x00", 1024) = 4
[pid  5089] 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  5089] read(202, "\x01\x09\x10\x00", 1024) = 4
[pid  5089] 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  5089] read(202, "\x01\x05\x10\x00", 1024) = 4
[pid  5089] 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  5089] read(202, "\x01\x23\x0c\x00", 1024) = 4
[pid  5089] 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
[pid  5089] read(202, "\x01\x14\x0c\x00", 1024) = 4
[pid  5089] 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  5089] read(202, "\x01\x25\x0c\x00", 1024) = 4
[pid  5089] 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  5089] read(202, "\x01\x38\x0c\x00", 1024) = 4
syzkaller login: [   81.215899][ T5088] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1
[   81.224768][ T5088] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9
[   81.233417][ T5088] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9
[   81.243692][ T5088] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4
[   81.252500][ T5088] Bluetooth: hci0: unexpected cc 0x0c25 length: 249 > 3
[pid  5089] 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
[pid  5089] read(202, "\x01\x39\x0c\x00", 1024) = 4
[pid  5089] 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  5089] read(202, "\x01\x16\x0c\x02\x00\x7d", 1024) = 6
[pid  5089] 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  5089] read(202,  <unfinished ...>
[pid  5086] <... ioctl resumed>, 0)     = -1 EALREADY (Operation already in progress)
[pid  5086] ioctl(3, HCISETSCAN <unfinished ...>
[pid  5089] <... read resumed>"\x01\x1a\x0c\x01\x02", 1024) = 5
[pid  5089] 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  5086] <... ioctl resumed>, 0x7ffc287c58ec) = 0
[pid  5086] 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 <unfinished ...>
[pid  5089] madvise(0x7fdd90574000, 8372224, MADV_DONTNEED <unfinished ...>
[pid  5086] <... writev resumed>)       = 13
[pid  5086] 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  5086] 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
[pid  5086] 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  5086] futex(0x7fdd90d749d0, FUTEX_WAIT, 2, NULL <unfinished ...>
[pid  5089] <... madvise resumed>)      = 0
[pid  5089] exit(0)                     = ?
[pid  5089] +++ exited with 0 +++
[pid  5086] <... futex resumed>)        = 0
[pid  5086] close(3)                    = 0
[pid  5086] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5086] setsid()                    = 1
[pid  5086] openat(AT_FDCWD, "/proc/self/ns/net", O_RDONLY) = 3
[pid  5086] dup2(3, 201)                = 201
[pid  5086] close(3)                    = 0
[pid  5086] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0
[pid  5086] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0
[pid  5086] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0
[pid  5086] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0
[pid  5086] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0
[pid  5086] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0
[pid  5086] unshare(CLONE_NEWNS)        = 0
[pid  5086] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0
[pid  5086] unshare(CLONE_NEWIPC)       = 0
[pid  5086] unshare(CLONE_NEWCGROUP)    = 0
[pid  5086] unshare(CLONE_NEWUTS)       = 0
[pid  5086] unshare(CLONE_SYSVSEM)      = 0
[pid  5086] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3
[pid  5086] write(3, "16777216", 8)     = 8
[pid  5086] close(3)                    = 0
[pid  5086] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3
[pid  5086] write(3, "536870912", 9)    = 9
[pid  5086] close(3)                    = 0
[pid  5086] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3
[pid  5086] write(3, "1024", 4)         = 4
[pid  5086] close(3)                    = 0
[pid  5086] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3
[pid  5086] write(3, "8192", 4)         = 4
[   81.261127][ T5088] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2
[pid  5086] close(3)                    = 0
[pid  5086] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3
[pid  5086] write(3, "1024", 4)         = 4
[pid  5086] close(3)                    = 0
[pid  5086] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3
[pid  5086] write(3, "1024", 4)         = 4
[pid  5086] close(3)                    = 0
[pid  5086] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3
[pid  5086] write(3, "1024 1048576 500 1024", 21) = 21
[pid  5086] close(3)                    = 0
[pid  5086] getpid()                    = 1
[pid  5086] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PTRACE|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_NICE|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, permitted=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PTRACE|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_NICE|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, inheritable=0}) = 0
[pid  5086] capset({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, permitted=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, inheritable=0}) = 0
[pid  5086] unshare(CLONE_NEWNET)       = 0
[pid  5086] openat(AT_FDCWD, "/proc/sys/net/ipv4/ping_group_range", O_WRONLY|O_CLOEXEC) = 3
[pid  5086] write(3, "0 65535", 7)      = 7
[pid  5086] close(3)                    = 0
[pid  5086] mkdir("/dev/binderfs", 0777) = 0
[pid  5086] mount("binder", "/dev/binderfs", "binder", 0, NULL) = 0
[pid  5086] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5086] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5091 attached
, child_tidptr=0x5555570e95d0) = 3
[pid  5091] set_robust_list(0x5555570e95e0, 24) = 0
[pid  5091] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5091] setpgid(0, 0)               = 0
[pid  5091] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5091] write(3, "1000", 4)         = 4
[pid  5091] close(3)                    = 0
[pid  5091] openat(AT_FDCWD, "/proc/self/ns/net", O_RDONLY) = 3
[pid  5091] setns(201, 0)               = 0
[pid  5091] socket(AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM) = 4
[pid  5091] setns(3, 0)                 = 0
[pid  5091] close(3)                    = 0
[pid  5091] socket(AF_INET, SOCK_STREAM, IPPROTO_IP) = 3
[pid  5091] dup2(4, 3)                  = 3
[   83.349012][ T5088] Bluetooth: hci0: command 0x0409 tx timeout
[   85.439111][ T5088] Bluetooth: hci0: command 0x041b tx timeout
[pid  5091] connect(3, {sa_family=AF_BLUETOOTH, rc_bdaddr=aa:aa:aa:aa:aa:00, rc_channel=4}, 10 <unfinished ...>
[pid  5086] kill(-3, SIGKILL <unfinished ...>
[pid  5091] <... connect resumed>)      = ?
[pid  5086] <... kill resumed>)         = 0
[pid  5091] +++ killed by SIGKILL +++
[pid  5086] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=3, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} ---
[pid  5086] kill(3, SIGKILL)            = 0
[pid  5086] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555570e95d0) = 4
./strace-static-x86_64: Process 5092 attached
[pid  5092] set_robust_list(0x5555570e95e0, 24) = 0
[pid  5092] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5092] setpgid(0, 0)               = 0
[pid  5092] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5092] write(3, "1000", 4)         = 4
[pid  5092] close(3)                    = 0
[pid  5092] openat(AT_FDCWD, "/proc/self/ns/net", O_RDONLY) = 3
[pid  5092] setns(201, 0)               = 0
[pid  5092] socket(AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM) = 4
[pid  5092] setns(3, 0)                 = 0
[pid  5092] close(3)                    = 0
[pid  5092] socket(AF_INET, SOCK_STREAM, IPPROTO_IP) = 3
[pid  5092] dup2(4, 3)                  = 3
[   87.508598][ T5088] Bluetooth: hci0: command 0x040f tx timeout
[   89.588684][ T5088] Bluetooth: hci0: command 0x0419 tx timeout
[pid  5092] connect(3, {sa_family=AF_BLUETOOTH, rc_bdaddr=aa:aa:aa:aa:aa:00, rc_channel=4}, 10 <unfinished ...>
[pid  5086] kill(-4, SIGKILL)           = 0
[pid  5092] <... connect resumed>)      = ?
[pid  5092] +++ killed by SIGKILL +++
[pid  5086] kill(4, SIGKILL)            = 0
[pid  5086] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=4, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} ---
[pid  5086] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5093 attached
, child_tidptr=0x5555570e95d0) = 5
[pid  5093] set_robust_list(0x5555570e95e0, 24) = 0
[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] socket(AF_INET, SOCK_STREAM, IPPROTO_IP) = 3
[pid  5093] dup2(4, 3)                  = 3
[   91.668605][ T5088] Bluetooth: hci0: command 0x0405 tx timeout
[   91.750633][  T756] cfg80211: failed to load regulatory.db
[pid  5093] connect(3, {sa_family=AF_BLUETOOTH, rc_bdaddr=aa:aa:aa:aa:aa:00, rc_channel=4}, 10 <unfinished ...>
[pid  5086] kill(-5, SIGKILL <unfinished ...>
[pid  5093] <... connect resumed>)      = ?
[pid  5086] <... kill resumed>)         = 0
[pid  5093] +++ killed by SIGKILL +++
[pid  5086] kill(5, SIGKILL)            = 0
[pid  5086] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} ---
[pid  5086] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5096 attached
, child_tidptr=0x5555570e95d0) = 6
[pid  5096] set_robust_list(0x5555570e95e0, 24) = 0
[pid  5096] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5096] setpgid(0, 0)               = 0
[pid  5096] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5096] write(3, "1000", 4)         = 4
[pid  5096] close(3)                    = 0
[pid  5096] openat(AT_FDCWD, "/proc/self/ns/net", O_RDONLY) = 3
[pid  5096] setns(201, 0)               = 0
[pid  5096] socket(AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM) = 4
[pid  5096] setns(3, 0)                 = 0
[pid  5096] close(3)                    = 0
[pid  5096] socket(AF_INET, SOCK_STREAM, IPPROTO_IP) = 3
[pid  5096] dup2(4, 3)                  = 3
[pid  5096] connect(3, {sa_family=AF_BLUETOOTH, rc_bdaddr=aa:aa:aa:aa:aa:00, rc_channel=4}, 10 <unfinished ...>
[pid  5086] kill(-6, SIGKILL)           = 0
[pid  5096] <... connect resumed>)      = ?
[pid  5096] +++ killed by SIGKILL +++
[pid  5086] kill(6, SIGKILL)            = 0
[pid  5086] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=6, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} ---
[pid  5086] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555570e95d0) = 7
./strace-static-x86_64: Process 5099 attached
[pid  5099] set_robust_list(0x5555570e95e0, 24) = 0
[pid  5099] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5099] setpgid(0, 0)               = 0
[pid  5099] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5099] write(3, "1000", 4)         = 4
[pid  5099] close(3)                    = 0
[pid  5099] openat(AT_FDCWD, "/proc/self/ns/net", O_RDONLY) = 3
[pid  5099] setns(201, 0)               = 0
[pid  5099] socket(AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM) = 4
[pid  5099] setns(3, 0)                 = 0
[pid  5099] close(3)                    = 0
[pid  5099] socket(AF_INET, SOCK_STREAM, IPPROTO_IP) = 3
[pid  5099] dup2(4, 3)                  = 3
[pid  5099] connect(3, {sa_family=AF_BLUETOOTH, rc_bdaddr=aa:aa:aa:aa:aa:00, rc_channel=4}, 10 <unfinished ...>
[pid  5086] kill(-7, SIGKILL <unfinished ...>
[pid  5099] <... connect resumed>)      = ?
[pid  5086] <... kill resumed>)         = 0
[pid  5099] +++ killed by SIGKILL +++
[pid  5086] kill(7, SIGKILL)            = 0
[pid  5086] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=7, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} ---
[pid  5086] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5101 attached
, child_tidptr=0x5555570e95d0) = 8
[pid  5101] set_robust_list(0x5555570e95e0, 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] socket(AF_INET, SOCK_STREAM, IPPROTO_IP) = 3
[pid  5101] dup2(4, 3)                  = 3
[pid  5101] connect(3, {sa_family=AF_BLUETOOTH, rc_bdaddr=aa:aa:aa:aa:aa:00, rc_channel=4}, 10 <unfinished ...>
[pid  5086] kill(-8, SIGKILL <unfinished ...>
[pid  5101] <... connect resumed>)      = ?
[pid  5086] <... kill resumed>)         = 0
[pid  5086] kill(8, SIGKILL <unfinished ...>
[pid  5101] +++ killed by SIGKILL +++
[pid  5086] <... kill resumed>)         = 0
[pid  5086] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=8, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} ---
[pid  5086] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555570e95d0) = 9
./strace-static-x86_64: Process 5104 attached
[pid  5104] set_robust_list(0x5555570e95e0, 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
[pid  5104] socket(AF_INET, SOCK_STREAM, IPPROTO_IP) = 3
[pid  5104] dup2(4, 3)                  = 3
[pid  5104] connect(3, {sa_family=AF_BLUETOOTH, rc_bdaddr=aa:aa:aa:aa:aa:00, rc_channel=4}, 10 <unfinished ...>
[pid  5086] kill(-9, SIGKILL)           = 0
[pid  5086] kill(9, SIGKILL)            = 0
[pid  5104] <... connect resumed>)      = ?
[pid  5104] +++ killed by SIGKILL +++
[pid  5086] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=9, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} ---
[pid  5086] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5110 attached
, child_tidptr=0x5555570e95d0) = 10
[pid  5110] set_robust_list(0x5555570e95e0, 24) = 0
[pid  5110] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5110] setpgid(0, 0)               = 0
[pid  5110] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5110] write(3, "1000", 4)         = 4
[pid  5110] close(3)                    = 0
[pid  5110] openat(AT_FDCWD, "/proc/self/ns/net", O_RDONLY) = 3
[pid  5110] setns(201, 0)               = 0
[pid  5110] socket(AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM) = 4
[pid  5110] setns(3, 0)                 = 0
[pid  5110] close(3)                    = 0
[pid  5110] socket(AF_INET, SOCK_STREAM, IPPROTO_IP) = 3
[pid  5110] dup2(4, 3)                  = 3
[pid  5110] connect(3, {sa_family=AF_BLUETOOTH, rc_bdaddr=aa:aa:aa:aa:aa:00, rc_channel=4}, 10 <unfinished ...>
[pid  5086] kill(-10, SIGKILL <unfinished ...>
[pid  5110] <... connect resumed>)      = ?
[pid  5086] <... kill resumed>)         = 0
[pid  5110] +++ killed by SIGKILL +++
[pid  5086] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=10, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} ---
[pid  5086] kill(10, SIGKILL)           = 0
[pid  5086] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5115 attached
, child_tidptr=0x5555570e95d0) = 11
[pid  5115] set_robust_list(0x5555570e95e0, 24) = 0
[pid  5115] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5115] setpgid(0, 0)               = 0
[pid  5115] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5115] write(3, "1000", 4)         = 4
[pid  5115] close(3)                    = 0
[pid  5115] openat(AT_FDCWD, "/proc/self/ns/net", O_RDONLY) = 3
[pid  5115] setns(201, 0)               = 0
[pid  5115] socket(AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM) = 4
[pid  5115] setns(3, 0)                 = 0
[pid  5115] close(3)                    = 0
[pid  5115] socket(AF_INET, SOCK_STREAM, IPPROTO_IP) = 3
[pid  5115] dup2(4, 3)                  = 3
[pid  5115] connect(3, {sa_family=AF_BLUETOOTH, rc_bdaddr=aa:aa:aa:aa:aa:00, rc_channel=4}, 10) = -1 ECONNREFUSED (Connection refused)
[pid  5115] getsockopt(-1, SOL_IPV6, IPV6_FLOWLABEL_MGR, 0x20000100, NULL) = -1 EBADF (Bad file descriptor)
[pid  5115] openat(AT_FDCWD, "/proc/self/ns/net", O_RDONLY) = 5
[pid  5115] setns(201, 0)               = 0
[pid  5115] socket(AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM) = 6
[pid  5115] setns(5, 0)                 = 0
[pid  5115] close(5)                    = 0
[  121.844391][ T5115] 
[  121.846784][ T5115] ======================================================
[  121.853815][ T5115] WARNING: possible circular locking dependency detected
[  121.860845][ T5115] 6.3.0-rc4-next-20230330-syzkaller #0 Not tainted
[  121.867353][ T5115] ------------------------------------------------------
[  121.874383][ T5115] syz-executor363/5115 is trying to acquire lock:
[  121.880807][ T5115] ffffffff8e357cc8 (rfcomm_mutex){+.+.}-{3:3}, at: rfcomm_dlc_exists+0x58/0x190
[  121.890068][ T5115] 
[  121.890068][ T5115] but task is already holding lock:
[  121.897439][ T5115] ffffffff8e35cc88 (rfcomm_ioctl_mutex){+.+.}-{3:3}, at: rfcomm_dev_ioctl+0x8a2/0x1c00
[  121.907128][ T5115] 
[  121.907128][ T5115] which lock already depends on the new lock.
[  121.907128][ T5115] 
[  121.917530][ T5115] 
[  121.917530][ T5115] the existing dependency chain (in reverse order) is:
[  121.926561][ T5115] 
[  121.926561][ T5115] -> #3 (rfcomm_ioctl_mutex){+.+.}-{3:3}:
[  121.934491][ T5115]        __mutex_lock+0x12f/0x1350
[  121.939624][ T5115]        rfcomm_dev_ioctl+0x8a2/0x1c00
[  121.945099][ T5115]        rfcomm_sock_ioctl+0xb7/0xe0
[  121.950419][ T5115]        sock_do_ioctl+0xcc/0x230
[  121.955583][ T5115]        sock_ioctl+0x1f8/0x680
[  121.960460][ T5115]        __x64_sys_ioctl+0x197/0x210
[  121.965771][ T5115]        do_syscall_64+0x39/0xb0
[  121.970734][ T5115]        entry_SYSCALL_64_after_hwframe+0x63/0xcd
[  121.977181][ T5115] 
[  121.977181][ T5115] -> #2 (sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM){+.+.}-{0:0}:
[  121.986584][ T5115]        lock_sock_nested+0x3a/0xf0
[  121.991814][ T5115]        rfcomm_sk_state_change+0x6d/0x3a0
[  121.997668][ T5115]        __rfcomm_dlc_close+0x1b1/0x890
[  122.003255][ T5115]        rfcomm_dlc_close+0x1e9/0x240
[  122.008697][ T5115]        __rfcomm_sock_close+0x17a/0x2f0
[  122.014354][ T5115]        rfcomm_sock_shutdown+0xd8/0x230
[  122.020006][ T5115]        rfcomm_sock_release+0x68/0x140
[  122.025577][ T5115]        __sock_release+0xcd/0x290
[  122.030718][ T5115]        sock_close+0x1c/0x20
[  122.035450][ T5115]        __fput+0x27c/0xa90
[  122.039973][ T5115]        task_work_run+0x16f/0x270
[  122.045295][ T5115]        do_exit+0xb0d/0x29f0
[  122.049990][ T5115]        do_group_exit+0xd4/0x2a0
[  122.055031][ T5115]        get_signal+0x2315/0x25b0
[  122.060074][ T5115]        arch_do_signal_or_restart+0x79/0x5c0
[  122.066252][ T5115]        exit_to_user_mode_prepare+0x11f/0x240
[  122.072452][ T5115]        syscall_exit_to_user_mode+0x1d/0x50
[  122.078451][ T5115]        do_syscall_64+0x46/0xb0
[  122.083420][ T5115]        entry_SYSCALL_64_after_hwframe+0x63/0xcd
[  122.089871][ T5115] 
[  122.089871][ T5115] -> #1 (&d->lock){+.+.}-{3:3}:
[  122.096950][ T5115]        __mutex_lock+0x12f/0x1350
[  122.102095][ T5115]        __rfcomm_dlc_close+0x15d/0x890
[  122.107706][ T5115]        rfcomm_dlc_close+0x1e9/0x240
[  122.113119][ T5115]        __rfcomm_sock_close+0x17a/0x2f0
[  122.118870][ T5115]        rfcomm_sock_shutdown+0xd8/0x230
[  122.124527][ T5115]        rfcomm_sock_release+0x68/0x140
[  122.130096][ T5115]        __sock_release+0xcd/0x290
[  122.135226][ T5115]        sock_close+0x1c/0x20
[  122.139930][ T5115]        __fput+0x27c/0xa90
[  122.144443][ T5115]        task_work_run+0x16f/0x270
[  122.149586][ T5115]        do_exit+0xb0d/0x29f0
[  122.154276][ T5115]        do_group_exit+0xd4/0x2a0
[  122.159313][ T5115]        get_signal+0x2315/0x25b0
[  122.164359][ T5115]        arch_do_signal_or_restart+0x79/0x5c0
[  122.170547][ T5115]        exit_to_user_mode_prepare+0x11f/0x240
[  122.176738][ T5115]        syscall_exit_to_user_mode+0x1d/0x50
[  122.182744][ T5115]        do_syscall_64+0x46/0xb0
[  122.187821][ T5115]        entry_SYSCALL_64_after_hwframe+0x63/0xcd
[  122.194257][ T5115] 
[  122.194257][ T5115] -> #0 (rfcomm_mutex){+.+.}-{3:3}:
[  122.201677][ T5115]        __lock_acquire+0x2f21/0x5df0
[  122.207081][ T5115]        lock_acquire.part.0+0x11c/0x370
[  122.212752][ T5115]        __mutex_lock+0x12f/0x1350
[  122.217880][ T5115]        rfcomm_dlc_exists+0x58/0x190
[  122.223283][ T5115]        rfcomm_dev_ioctl+0x966/0x1c00
[  122.228758][ T5115]        rfcomm_sock_ioctl+0xb7/0xe0
[  122.234084][ T5115]        sock_do_ioctl+0xcc/0x230
[  122.239139][ T5115]        sock_ioctl+0x1f8/0x680
[  122.244014][ T5115]        __x64_sys_ioctl+0x197/0x210
[  122.249323][ T5115]        do_syscall_64+0x39/0xb0
[  122.254284][ T5115]        entry_SYSCALL_64_after_hwframe+0x63/0xcd
[  122.260808][ T5115] 
[  122.260808][ T5115] other info that might help us debug this:
[  122.260808][ T5115] 
[  122.271041][ T5115] Chain exists of:
[  122.271041][ T5115]   rfcomm_mutex --> sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM --> rfcomm_ioctl_mutex
[  122.271041][ T5115] 
[  122.285919][ T5115]  Possible unsafe locking scenario:
[  122.285919][ T5115] 
[  122.293373][ T5115]        CPU0                    CPU1
[  122.298746][ T5115]        ----                    ----
[  122.304113][ T5115]   lock(rfcomm_ioctl_mutex);
[  122.308807][ T5115]                                lock(sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM);
[  122.317496][ T5115]                                lock(rfcomm_ioctl_mutex);
[  122.324735][ T5115]   lock(rfcomm_mutex);
[  122.328903][ T5115] 
[  122.328903][ T5115]  *** DEADLOCK ***
[  122.328903][ T5115] 
[  122.337052][ T5115] 2 locks held by syz-executor363/5115:
[  122.342612][ T5115]  #0: ffff888146eb7130 (sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM){+.+.}-{0:0}, at: rfcomm_sock_ioctl+0xaa/0xe0
[  122.354070][ T5115]  #1: ffffffff8e35cc88 (rfcomm_ioctl_mutex){+.+.}-{3:3}, at: rfcomm_dev_ioctl+0x8a2/0x1c00
[  122.364203][ T5115] 
[  122.364203][ T5115] stack backtrace:
[  122.370109][ T5115] CPU: 0 PID: 5115 Comm: syz-executor363 Not tainted 6.3.0-rc4-next-20230330-syzkaller #0
[  122.380101][ T5115] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
[  122.390178][ T5115] Call Trace:
[  122.393466][ T5115]  <TASK>
[  122.396418][ T5115]  dump_stack_lvl+0xd9/0x150
[  122.401049][ T5115]  check_noncircular+0x25f/0x2e0
[  122.406015][ T5115]  ? print_circular_bug+0x730/0x730
[  122.411238][ T5115]  ? is_bpf_text_address+0x9d/0x1b0
[  122.416455][ T5115]  ? kernel_text_address+0x3d/0x80
[  122.421608][ T5115]  ? unwind_get_return_address+0x55/0xa0
[  122.427266][ T5115]  ? write_profile+0x450/0x450
[  122.432067][ T5115]  ? arch_stack_walk+0x97/0xf0
[  122.436855][ T5115]  __lock_acquire+0x2f21/0x5df0
[  122.441737][ T5115]  ? lockdep_hardirqs_on_prepare+0x410/0x410
[  122.447743][ T5115]  ? save_trace+0x3f/0xb20
[  122.452184][ T5115]  ? _find_first_zero_bit+0x94/0xb0
[  122.457410][ T5115]  lock_acquire.part.0+0x11c/0x370
[  122.462589][ T5115]  ? rfcomm_dlc_exists+0x58/0x190
[  122.467675][ T5115]  ? lock_sync+0x190/0x190
[  122.472115][ T5115]  ? rcu_is_watching+0x12/0xb0
[  122.476914][ T5115]  ? trace_lock_acquire+0x12d/0x180
[  122.482135][ T5115]  ? rfcomm_dlc_exists+0x58/0x190
[  122.487212][ T5115]  ? lock_acquire+0x32/0xc0
[  122.491737][ T5115]  ? rfcomm_dlc_exists+0x58/0x190
[  122.496812][ T5115]  __mutex_lock+0x12f/0x1350
[  122.501445][ T5115]  ? rfcomm_dlc_exists+0x58/0x190
[  122.506520][ T5115]  ? rfcomm_dlc_exists+0x58/0x190
[  122.511576][ T5115]  ? mutex_lock_io_nested+0x11a0/0x11a0
[  122.517162][ T5115]  ? __might_fault+0xe2/0x190
[  122.521880][ T5115]  ? lock_downgrade+0x690/0x690
[  122.526756][ T5115]  ? trace_lock_acquire+0x12d/0x180
[  122.531981][ T5115]  ? apparmor_capable+0x1dc/0x460
[  122.537129][ T5115]  rfcomm_dlc_exists+0x58/0x190
[  122.542027][ T5115]  rfcomm_dev_ioctl+0x966/0x1c00
[  122.546987][ T5115]  ? rfcomm_dev_state_change+0x170/0x170
[  122.552728][ T5115]  ? lock_downgrade+0x690/0x690
[  122.557606][ T5115]  ? mark_held_locks+0x9f/0xe0
[  122.562402][ T5115]  ? __local_bh_enable_ip+0xa4/0x130
[  122.567894][ T5115]  rfcomm_sock_ioctl+0xb7/0xe0
[  122.572706][ T5115]  sock_do_ioctl+0xcc/0x230
[  122.577256][ T5115]  ? get_user_ifreq+0x250/0x250
[  122.582140][ T5115]  ? vfs_fileattr_set+0xc40/0xc40
[  122.587198][ T5115]  sock_ioctl+0x1f8/0x680
[  122.591554][ T5115]  ? br_ioctl_call+0xb0/0xb0
[  122.596170][ T5115]  ? lock_downgrade+0x690/0x690
[  122.601059][ T5115]  ? bpf_lsm_file_ioctl+0x9/0x10
[  122.606038][ T5115]  ? br_ioctl_call+0xb0/0xb0
[  122.610673][ T5115]  __x64_sys_ioctl+0x197/0x210
[  122.615464][ T5115]  do_syscall_64+0x39/0xb0
[  122.619908][ T5115]  entry_SYSCALL_64_after_hwframe+0x63/0xcd
[  122.625833][ T5115] RIP: 0033:0x7fdd90dc3379
[  122.630274][ T5115] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 15 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 b8 ff ff ff f7 d8 64 89 01 48
[  122.649984][ T5115] RSP: 002b:00007ffc287c58b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[  122.658414][ T5115] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fdd90dc3379
[  122.666483][ T5115] RDX: 0000000020000100 RSI: 00000000400452c8 RDI: 0000000000000006
[  122.674486][ T5115] RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffc287c58e8
[  122.682469][ T5115] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc287c5900
[pid  5115] ioctl(6, RFCOMMCREATEDEV, 0x20000100) = 0
[pid  5115] close(3)                    = 0
[pid  5115] close(4)                    = 0
[pid  5115] close(5)                    = -1 EBADF (Bad file descriptor)
[pid  5115] close(6)                    = 0
[pid  5115] close(7)                    = -1 EBADF (Bad file descriptor)
[pid  5115] close(8)                    = -1 EBADF (Bad file descriptor)
[pid  5115] close(9)                    = -1 EBADF (Bad file descriptor)
[pid  5115] close(10)                   = -1 EBADF (Bad file descriptor)
[pid  5115] close(11)                   = -1 EBADF (Bad file descriptor)
[pid  5115] close(12)                   = -1 EBADF (Bad file descriptor)
[pid  5115] close(13)                   = -1 EBADF (Bad file descriptor)
[pid  5115] close(14)                   = -1 EBADF (Bad file descriptor)
[pid  5115] close(15)                   = -1 EBADF (Bad file descriptor)
[pid  5115] close(16)                   = -1 EBADF (Bad file descriptor)
[pid  5115] close(17)                   = -1 EBADF (Bad file descriptor)
[pid  5115] close(18)                   = -1 EBADF (Bad file descriptor)
[pid  5115] close(19)                   = -1 EBADF (Bad file descriptor)
[pid  5115] close(20)                   = -1 EBADF (Bad file descriptor)
[pid  5115] close(21)                   = -1 EBADF (Bad file descriptor)
[pid  5115] close(22)                   = -1 EBADF (Bad file descriptor)
[pid  5115] close(23)                   = -1 EBADF (Bad file descriptor)
[pid  5115] close(24)                   = -1 EBADF (Bad file descriptor)
[pid  5115] close(25)                   = -1 EBADF (Bad file descriptor)
[pid  5115] close(26)                   = -1 EBADF (Bad file descriptor)
[pid  5115] close(27)                   = -1 EBADF (Bad file descriptor)
[pid  5115] close(28)                   = -1 EBADF (Bad file descriptor)
[pid  5115] close(29)                   = -1 EBADF (Bad file descriptor)
[pid  5115] exit_group(0)               = ?
[pid  5115] +++ exited with 0 +++
[pid  5086] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
[pid  5086] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5116 attached
, child_tidptr=0x5555570e95d0) = 12
[pid  5116] set_robust_list(0x5555570e95e0, 24) = 0
[pid  5116] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5116] setpgid(0, 0)               = 0
[pid  5116] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5116] write(3, "1000", 4)         = 4
[pid  5116] close(3)                    = 0
[pid  5116] openat(AT_FDCWD, "/proc/self/ns/net", O_RDONLY) = 3
[pid  5116] setns(201, 0)               = 0
[pid  5116] socket(AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM) = 4
[pid  5116] setns(3, 0)                 = 0
[pid  5116] close(3)                    = 0
[pid  5116] socket(AF_INET, SOCK_STREAM, IPPROTO_IP) = 3
[pid  5116] dup2(4, 3)                  = 3
[  122.690454][ T5115] R13: 00007ffc287c5910 R14: 000000000001c039 R15: 00007ffc287c58d0
[  122.698444][ T5115]  </TASK>
[pid  5116] connect(3, {sa_family=AF_BLUETOOTH, rc_bdaddr=aa:aa:aa:aa:aa:00, rc_channel=4}, 10 <unfinished ...>
[pid  5086] kill(-12, SIGKILL)          = 0
[pid  5086] kill(12, SIGKILL)           = 0
[pid  5116] <... connect resumed>)      = ?
[pid  5116] +++ killed by SIGKILL +++
[pid  5086] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=12, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} ---
[pid  5086] restart_syscall(<... resuming interrupted kill ...>) = 0
[pid  5086] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5117 attached
, child_tidptr=0x5555570e95d0) = 13
[pid  5117] set_robust_list(0x5555570e95e0, 24) = 0
[pid  5117] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5117] setpgid(0, 0)               = 0
[pid  5117] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5117] write(3, "1000", 4)         = 4
[pid  5117] close(3)                    = 0
[pid  5117] openat(AT_FDCWD, "/proc/self/ns/net", O_RDONLY) = 3
[pid  5117] setns(201, 0)               = 0
[pid  5117] socket(AF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM) = 4
[pid  5117] setns(3, 0)                 = 0
[pid  5117] close(3)                    = 0
[pid  5117] socket(AF_INET, SOCK_STREAM, IPPROTO_IP) = 3
[pid  5117] dup2(4, 3)                  = 3