./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2273742703 <...> Warning: Permanently added '10.128.1.102' (ECDSA) to the list of known hosts. execve("./syz-executor2273742703", ["./syz-executor2273742703"], 0x7ffcd28df280 /* 10 vars */) = 0 brk(NULL) = 0x555556817000 brk(0x555556817c40) = 0x555556817c40 arch_prctl(ARCH_SET_FS, 0x555556817300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor2273742703", 4096) = 28 brk(0x555556838c40) = 0x555556838c40 brk(0x555556839000) = 0x555556839000 mprotect(0x7f36afb82000, 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 getpid() = 3608 mkdir("./syzkaller.GYY6VZ", 0700) = 0 chmod("./syzkaller.GYY6VZ", 0777) = 0 chdir("./syzkaller.GYY6VZ") = 0 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555568175d0) = 3609 ./strace-static-x86_64: Process 3609 attached [pid 3609] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 3609] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3609] setsid() = 1 [pid 3609] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 3609] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 3609] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 3609] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 3609] prlimit64(0, RLIMIT_CORE, {rlim_cur=0, rlim_max=0}, NULL) = 0 [pid 3609] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 3609] unshare(CLONE_NEWNS) = 0 [pid 3609] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 3609] unshare(CLONE_NEWIPC) = 0 [pid 3609] unshare(CLONE_NEWCGROUP) = 0 [pid 3609] unshare(CLONE_NEWUTS) = 0 [pid 3609] unshare(CLONE_SYSVSEM) = 0 [pid 3609] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3609] write(3, "16777216", 8) = 8 [pid 3609] close(3) = 0 [pid 3609] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 3609] write(3, "536870912", 9) = 9 [pid 3609] close(3) = 0 [pid 3609] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3609] write(3, "1024", 4) = 4 [pid 3609] close(3) = 0 [pid 3609] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3609] write(3, "8192", 4) = 4 [pid 3609] close(3) = 0 [pid 3609] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3609] write(3, "1024", 4) = 4 [pid 3609] close(3) = 0 [pid 3609] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 3609] write(3, "1024", 4) = 4 [pid 3609] close(3) = 0 [pid 3609] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 3609] write(3, "1024 1048576 500 1024", 21) = 21 [pid 3609] close(3) = 0 [pid 3609] getpid() = 1 [pid 3609] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< HARDIRQ-unsafe lock order detected [ 49.708666][ T3609] 5.18.0-syzkaller-11972-gd1dc87763f40 #0 Not tainted [ 49.708677][ T3609] ----------------------------------------------------- [ 49.708682][ T3609] syz-executor227/3609 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire: [pid 3609] +++ exited with 1 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3609, si_uid=0, si_status=1, si_utime=0, si_stime=8} --- exit_group(0) = ? +++ exited with 0 +++ [ 49.708709][ T3609] ffff88801b5aa0c0 (&new->fa_lock){....}-{2:2}, at: