Following code makes x86_64 strace on RHEL[567] loop endlessly:


======= 
#include <sys/syscall.h>
#include <linux/aio_abi.h>
int main() {
        syscall(__NR_io_submit, -1, -1, 0);
        syscall(__NR_io_submit, (aio_context_t)-1, -1, 0);
}
=======


execve("./a.out", ["./a.out"], [/* 41 vars */]) = 0
brk(0)                                  = 0x2153000
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fac7984d000
access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=55634, ...}) = 0
mmap(NULL, 55634, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7fac7983f000
close(3)                                = 0
open("/lib64/libc.so.6", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\0\34\2\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=2107768, ...}) = 0
mmap(NULL, 3932736, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fac7926d000
mprotect(0x7fac79423000, 2097152, PROT_NONE) = 0
mmap(0x7fac79623000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1b6000) = 0x7fac79623000
mmap(0x7fac79629000, 16960, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fac79629000
close(3)                                = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fac7983e000
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fac7983c000
arch_prctl(ARCH_SET_FS, 0x7fac7983c740) = 0
mprotect(0x7fac79623000, 16384, PROT_READ) = 0
mprotect(0x600000, 4096, PROT_READ)     = 0
mprotect(0x7fac7984e000, 4096, PROT_READ) = 0
munmap(0x7fac7983f000, 55634)           = 0
io_submit(4294967295, 4294967295, {{...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, {...}, 

[ ... ]

Reproducer itself runs as expected (without a loop):

=======
 7.0 S x86_64 # cat test.c 
#include <sys/syscall.h>
#include <linux/aio_abi.h>
int main() {
        syscall(__NR_io_submit, -1, -1, 0);
        syscall(__NR_io_submit, (aio_context_t)-1, -1, 0);
}
 7.0 S x86_64 # gcc test.c 
 7.0 S x86_64 # ./a.out 
 7.0 S x86_64 # 
=======


Versions: 
- strace-4.5.18-18.el5.x86_64 
- strace-4.5.19-1.17.el6.x86_64 
- strace-4.8-7.el7.x86_64