[Bug 1791796] Re: unimplemented thread syscalls in nios2 user-mode emula

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[Bug 1791796] Re: unimplemented thread syscalls in nios2 user-mode emula

From:	Thomas Huth
Subject:	[Bug 1791796] Re: unimplemented thread syscalls in nios2 user-mode emulation
Date:	Fri, 13 Nov 2020 15:53:53 -0000
The QEMU project is currently considering to move its bug tracking to another 
system. For this we need to know which bugs are still valid and which could be 
closed already. Thus we are setting older bugs to "Incomplete" now.
If you still think this bug report here is valid, then please switch the state 
back to "New" within the next 60 days, otherwise this report will be marked as 
"Expired". Or mark it as "Fix Released" if the problem has been solved with a 
newer version of QEMU already. Thank you and sorry for the inconvenience.

** Changed in: qemu
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1791796

Title:
  unimplemented thread syscalls in nios2 user-mode emulation

Status in QEMU:
  Incomplete

Bug description:
  This bug is reported against the 3.0 release.

  I noticed that the GCC test gcc.dg/torture/tls/tls-test.c is failing
  when run in user-mode qemu for nios2 target.  The problem appears to
  be that the thread-related syscalls are unimplemented in qemu.  Here
  is output from running with -strace:

  22484 brk(NULL) = 0x00005000
  22484 uname(0x7fffef5a) = 0
  22484 faccessat(AT_FDCWD,"/etc/ld.so.preload",R_OK,0x5) = -1 errno=2 (No such 
file or directory)
  22484 
openat(AT_FDCWD,"/scratch/sandra/nios2-linux-trunk3/obj/test-2018.11-999999-nios2-linux-gnu/host-x86_64-linux-gnu/sourceryg++-2018.11/nios2-linux-gnu/libc/./lib/./tls/libm.so.6",O_RDONLY|O_LARGEFILE|O_CLOEXEC)
 = -1 errno=2 (No such file or directory)
  22484 
fstatat64(AT_FDCWD,"/scratch/sandra/nios2-linux-trunk3/obj/test-2018.11-999999-nios2-linux-gnu/host-x86_64-linux-gnu/sourceryg++-2018.11/nios2-linux-gnu/libc/./lib/./tls",0x7fffe870,0)
 = -1 errno=2 (No such file or directory)
  22484 
openat(AT_FDCWD,"/scratch/sandra/nios2-linux-trunk3/obj/test-2018.11-999999-nios2-linux-gnu/host-x86_64-linux-gnu/sourceryg++-2018.11/nios2-linux-gnu/libc/./lib/./libm.so.6",O_RDONLY|O_LARGEFILE|O_CLOEXEC)
 = 3
  22484 read(3,0x7fffe954,512) = 512
  22484 fstat64(3,0x7fffe870) = 0
  22484 mmap2(NULL,803596,PROT_EXEC|PROT_READ,MAP_PRIVATE|MAP_DENYWRITE,3,0) = 
0x7f716000
  22484 
mmap2(0x7f7d8000,12288,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_DENYWRITE|MAP_FIXED,3,0xc1)
 = 0x7f7d8000
  22484 close(3) = 0
  22484 
openat(AT_FDCWD,"/scratch/sandra/nios2-linux-trunk3/obj/test-2018.11-999999-nios2-linux-gnu/host-x86_64-linux-gnu/sourceryg++-2018.11/nios2-linux-gnu/libc/./lib/./libpthread.so.0",O_RDONLY|O_LARGEFILE|O_CLOEXEC)
 = 3
  22484 read(3,0x7fffe948,512) = 512
  22484 mmap2(NULL,8192,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANONYMOUS,-1,0) = 
0x7f714000
  22484 fstat64(3,0x7fffe864) = 0
  22484 mmap2(NULL,120700,PROT_EXEC|PROT_READ,MAP_PRIVATE|MAP_DENYWRITE,3,0) = 
0x7f6f6000
  22484 mprotect(0x7f70e000,4096,PROT_NONE) = 0
  22484 
mmap2(0x7f70f000,12288,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_DENYWRITE|MAP_FIXED,3,0x18)
 = 0x7f70f000
  22484 
mmap2(0x7f712000,6012,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED,-1,0)
 = 0x7f712000
  22484 close(3) = 0
  22484 
openat(AT_FDCWD,"/scratch/sandra/nios2-linux-trunk3/obj/test-2018.11-999999-nios2-linux-gnu/host-x86_64-linux-gnu/sourceryg++-2018.11/nios2-linux-gnu/libc/./lib/./libc.so.6",O_RDONLY|O_LARGEFILE|O_CLOEXEC)
 = 3
  22484 read(3,0x7fffe93c,512) = 512
  22484 fstat64(3,0x7fffe858) = 0
  22484 mmap2(NULL,1491048,PROT_EXEC|PROT_READ,MAP_PRIVATE|MAP_DENYWRITE,3,0) = 
0x7f589000
  22484 
mmap2(0x7f6de000,86016,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_DENYWRITE|MAP_FIXED,3,0x154)
 = 0x7f6de000
  22484 
mmap2(0x7f6f3000,8296,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED,-1,0)
 = 0x7f6f3000
  22484 close(3) = 0
  22484 mprotect(0x7f6de000,65536,PROT_READ) = 0
  22484 mprotect(0x7f70f000,8192,PROT_READ) = 0
  22484 mprotect(0x7f7d8000,4096,PROT_READ) = 0
  22484 mprotect(0x00003000,4096,PROT_READ) = 0
  22484 mprotect(0x7f7fc000,4096,PROT_READ) = 0
  22484 set_tid_address(2138131700,2147480980,2147480988,2147480988,87148,47) = 
22484
  22484 set_robust_list(2138131708,12,2147480988,0,87148,47) = -1 errno=38 
(Function not implemented)
  22484 rt_sigaction(32,0x7ffff36c,NULL) = 0
  22484 rt_sigaction(33,0x7ffff36c,NULL) = -1 errno=22 (Invalid argument)
  22484 rt_sigprocmask(SIG_UNBLOCK,0x7ffff4a8,NULL) = 0
  22484 getrlimit(3,2147480732,3,0,62512,47) = 0
  22484 mmap2(NULL,8392704,PROT_NONE,MAP_PRIVATE|MAP_ANONYMOUS|0x20000,-1,0) = 
0x7ed88000
  22484 mprotect(0x7ed89000,8388608,PROT_READ|PROT_WRITE) = 0
  22484 brk(NULL) = 0x00005000
  22484 brk(0x00026000) = 0x00026000
  22484 
clone(CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID,child_stack=0x7f588018,parent_tidptr=0x7f5884fc,tls=0x7f58f928,child_tidptr=0x7f5884fc)
 = 22503
  22484 io_setup(4001536,2136506392,2136507644,2136507644,2136537384,4100) = -1 
errno=38 (Function not implemented)
  22484 futex(0x7f5884fc,FUTEX_WAIT,22503,NULL,NULL,0)22484 
set_robust_list(2136507652,12,0,4100,2136508076,4100) = -1 errno=38 (Function 
not implemented)
  22484 madvise(2128117760,8372224,4,2136507672,528660,4100) = 0
  22484 exit(0)
   = 0
  22484 fstat64(1,0x7fffef48) = 0
  22484 write(1,0x51e8,42)FAIL: a= 10, thr_a = 10 Addr = 0x7f715120
   = 42
  22484 exit_group(1)
  sandra@build2-trusty-cs:/scratch/sandra/nios2-linux-trunk3$ 
  22484 mmap2(NULL,1491048,PROT_EXEC|PROT_READ,MAP_PRIVATE|MAP_DENYWRITE,3,0) = 
0x7f589000
  22484 
mmap2(0x7f6de000,86016,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_DENYWRITE|MAP_FIXED,3,0x154)
 = 0x7f6de000
  22484 
mmap2(0x7f6f3000,8296,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED,-1,0)
 = 0x7f6f3000
  22484 close(3) = 0
  22484 mprotect(0x7f6de000,65536,PROT_READ) = 0
  22484 mprotect(0x7f70f000,8192,PROT_READ) = 0
  22484 mprotect(0x7f7d8000,4096,PROT_READ) = 0
  22484 mprotect(0x00003000,4096,PROT_READ) = 0
  22484 mprotect(0x7f7fc000,4096,PROT_READ) = 0
  22484 set_tid_address(2138131700,2147480980,2147480988,2147480988,87148,47) = 
22484
  22484 set_robust_list(2138131708,12,2147480988,0,87148,47) = -1 errno=38 
(Function not implemented)
  22484 rt_sigaction(32,0x7ffff36c,NULL) = 0
  22484 rt_sigaction(33,0x7ffff36c,NULL) = -1 errno=22 (Invalid argument)
  22484 rt_sigprocmask(SIG_UNBLOCK,0x7ffff4a8,NULL) = 0
  22484 getrlimit(3,2147480732,3,0,62512,47) = 0
  22484 mmap2(NULL,8392704,PROT_NONE,MAP_PRIVATE|MAP_ANONYMOUS|0x20000,-1,0) = 
0x7ed88000
  22484 mprotect(0x7ed89000,8388608,PROT_READ|PROT_WRITE) = 0
  22484 brk(NULL) = 0x00005000
  22484 brk(0x00026000) = 0x00026000
  22484 
clone(CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID,child_stack=0x7f588018,parent_tidptr=0x7f5884fc,tls=0x7f58f928,child_tidptr=0x7f5884fc)
 = 22503
  22484 io_setup(4001536,2136506392,2136507644,2136507644,2136537384,4100) = -1 
errno=38 (Function not implemented)
  22484 futex(0x7f5884fc,FUTEX_WAIT,22503,NULL,NULL,0)22484 
set_robust_list(2136507652,12,0,4100,2136508076,4100) = -1 errno=38 (Function 
not implemented)
  22484 madvise(2128117760,8372224,4,2136507672,528660,4100) = 0
  22484 exit(0)
   = 0
  22484 fstat64(1,0x7fffef48) = 0
  22484 write(1,0x51e8,42)FAIL: a= 10, thr_a = 10 Addr = 0x7f715120
   = 42
  22484 exit_group(1)
  sandra@build2-trusty-cs:/scratch/sandra/nios2-linux-trunk3$ 
  22484 mmap2(NULL,1491048,PROT_EXEC|PROT_READ,MAP_PRIVATE|MAP_DENYWRITE,3,0) = 
0x7f589000
  22484 
mmap2(0x7f6de000,86016,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_DENYWRITE|MAP_FIXED,3,0x154)
 = 0x7f6de000
  22484 
mmap2(0x7f6f3000,8296,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED,-1,0)
 = 0x7f6f3000
  22484 close(3) = 0
  22484 mprotect(0x7f6de000,65536,PROT_READ) = 0
  22484 mprotect(0x7f70f000,8192,PROT_READ) = 0
  22484 mprotect(0x7f7d8000,4096,PROT_READ) = 0
  22484 mprotect(0x00003000,4096,PROT_READ) = 0
  22484 mprotect(0x7f7fc000,4096,PROT_READ) = 0
  22484 set_tid_address(2138131700,2147480980,2147480988,2147480988,87148,47) = 
22484
  22484 set_robust_list(2138131708,12,2147480988,0,87148,47) = -1 errno=38 
(Function not implemented)
  22484 rt_sigaction(32,0x7ffff36c,NULL) = 0
  22484 rt_sigaction(33,0x7ffff36c,NULL) = -1 errno=22 (Invalid argument)
  22484 rt_sigprocmask(SIG_UNBLOCK,0x7ffff4a8,NULL) = 0
  22484 getrlimit(3,2147480732,3,0,62512,47) = 0
  22484 mmap2(NULL,8392704,PROT_NONE,MAP_PRIVATE|MAP_ANONYMOUS|0x20000,-1,0) = 
0x7ed88000
  22484 mprotect(0x7ed89000,8388608,PROT_READ|PROT_WRITE) = 0
  22484 brk(NULL) = 0x00005000
  22484 brk(0x00026000) = 0x00026000
  22484 
clone(CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID,child_stack=0x7f588018,parent_tidptr=0x7f5884fc,tls=0x7f58f928,child_tidptr=0x7f5884fc)
 = 22503
  22484 io_setup(4001536,2136506392,2136507644,2136507644,2136537384,4100) = -1 
errno=38 (Function not implemented)
  22484 futex(0x7f5884fc,FUTEX_WAIT,22503,NULL,NULL,0)22484 
set_robust_list(2136507652,12,0,4100,2136508076,4100) = -1 errno=38 (Function 
not implemented)
  22484 madvise(2128117760,8372224,4,2136507672,528660,4100) = 0
  22484 exit(0)
   = 0
  22484 fstat64(1,0x7fffef48) = 0
  22484 write(1,0x51e8,42)FAIL: a= 10, thr_a = 10 Addr = 0x7f715120
   = 42
  22484 exit_group(1)

  Note that set_robust_list and clone are reported as unimplemented.

  I've reported the problems with the signal syscalls separately here.
  https://bugs.launchpad.net/qemu/+bug/1791763

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