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glibc/sysdeps/unix/sysv/linux/mips
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Adhemerval Zanella 3f823e87cc Call exit directly in clone (BZ #21512) 
On aarch64, alpha, arm, hppa, mips, nios2, powerpc, sh, sparc, tile,
and x86_64 the clone syscall jumps to _exit after the child execution
and the function ends the process execution by calling exit_group.
This behavior have a small issue where threads created with
CLONE_THREAD using clone syscall directly will eventually exit the
whole group altogether instead of just the thread created.  Also,
s390, microblaze, ia64, i386, and m68k differs by calling exit
syscall directly.

This patch changes all architectures to call the exit syscall
directly, as for s390, microblaze, ia64, i386, and m68k.  This do not
have change glibc internal behavior in any sort, since the only
usage of clone implementation in posix_spawn calls _exit directly
in the created child (fork uses a direct call to clone).

Checked on x86_64-linux-gnu, i686-linux-gnu, aarch64-linux-gnu,
powerpc-linux-gnu, powerpc64le-linux-gnu, sparc64-linux-gnu,
and sparcv9-linux-gnu.

	[BZ #21512]
	* sysdeps/unix/sysv/linux/aarch64/clone.S (__clone): Call exit
	syscall instead of jump to _exit.
	(CLONE_VM_BIT): Remove unused define.
	(CLONE_VM): Likewise.
	(CLONE_THREAD_BIT): Likewise.
	(CLONE_THREAD): Likewise.
	* sysdeps/unix/sysv/linux/alpha/clone.S (__clone): Likewise.
	(CLONE_VM): Remove unused define.
	* sysdeps/unix/sysv/linux/arm/clone.S (__clone): Likewise.
	(CLONE_VM): Remove unused define.
	(CLONE_THREAD): Likewise.
	* sysdeps/unix/sysv/linux/i386/clone.S (CLONE_VM): Likewise.
	* sysdeps/unix/sysv/linux/ia64/clone2.S (__clone2): Call exit
	syscall instead of jump to _exit.
	* sysdeps/unix/sysv/linux/hppa/clone.S (__clone): Likewise.
	* sysdeps/unix/sysv/linux/mips/clone.S (__clone): Likewise.
	(CLONE_VM): Remove unused define.
	(CLONE_THREAD): Likewise.
	* sysdeps/unix/sysv/linux/nios2/clone.S (__clone): Likewise.
	(CLONE_VM): Remove unused define.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/clone.S (__clone):
	Likewise.
	(CLONE_VM): Remove unused define.
	(CLONE_THREAD): Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/clone.S (__clone):
	Likewise.
	(CLONE_VM): Remove unused define.
	(CLONE_THREAD): Likewise.
	* sysdeps/unix/sysv/linux/sh/clone.S  (__clone): Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc32/clone.S (__clone): Likewise.
	(CLONE_VM): Remove unused define.
	* sysdeps/unix/sysv/linux/sparc/sparc64/clone.S (__clone): Likewise.
	(CLONE_VM): Remove unused define.
	* sysdeps/unix/sysv/linux/tile/clone.S (__clone): Likewise.
	* sysdeps/unix/sysv/linux/x86_64/clone.S (__clone): Likewise.
	(CLONE_VM): Remove unused define.
	* sysdeps/unix/sysv/linux/Makefile (tests): Add tst-clone3.
	* sysdeps/unix/sysv/linux/tst-clone3.c: New file.

Fix
2017-06-26 17:52:20 -03:00
..
bits Factor out shared definitions from bits/signum.h. 2017-06-20 20:32:50 -04:00
mips32 mips: Fix store/load gp registers to/from ucontext_t 2017-06-13 21:34:45 +00:00
mips64 posix: Implement preadv2 and pwritev2 2017-05-31 17:35:46 -03:00
sys Fix more namespace issues in sys/ucontext.h (bug 21457). 2017-06-01 14:07:40 +00:00
____longjmp_chk.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
_test_and_set.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
arch-fork.h Split arch-fork.h from fork.h 2014-05-16 11:17:41 -07:00
brk.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
clone.S Call exit directly in clone (BZ #21512) 2017-06-26 17:52:20 -03:00
configure MIPS: Set the required Linux kernel version to 4.5.0 for 2008 NaN 2016-01-25 00:19:27 +00:00
configure.ac MIPS: Set the required Linux kernel version to 4.5.0 for 2008 NaN 2016-01-25 00:19:27 +00:00
dl-cache.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
dl-static.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
getcontext.S mips: Fix store/load gp registers to/from ucontext_t 2017-06-13 21:34:45 +00:00
getmsg.c Move mips from ports to libc. 2014-02-10 23:30:21 +00:00
getrlimit64.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
getsysstats.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
Implies NPTL is no longer an add-on! 2014-07-07 09:29:06 -07:00
init-first.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
kernel_rt_sigframe.h Move mips from ports to libc. 2014-02-10 23:30:21 +00:00
kernel_sigaction.h Move mips from ports to libc. 2014-02-10 23:30:21 +00:00
kernel_stat.h Allow [f]statfs64 to alias [f]statfs 2016-11-22 09:59:12 -08:00
kernel_termios.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
kernel-features.h Remove __ASSUME_REQUEUE_PI 2017-04-04 18:02:02 -03:00
ldsodefs.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
libc-abis Add support for MIPS O32 FPXX and .MIPS.abiflags 2014-12-31 21:09:21 +00:00
libc-vdso.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
makecontext.S mips: Fix store/load gp registers to/from ucontext_t 2017-06-13 21:34:45 +00:00
Makefile XFAIL check-execstack for MIPS. 2016-11-04 16:42:37 +00:00
pipe.S Move mips from ports to libc. 2014-02-10 23:30:21 +00:00
profil-counter.h Move mips from ports to libc. 2014-02-10 23:30:21 +00:00
pt-vfork.S MIPS: Consolidate NPTL/non versions of vfork 2014-06-27 11:18:10 -07:00
putmsg.c Move mips from ports to libc. 2014-02-10 23:30:21 +00:00
readelflib.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
register-dump.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
setcontext.S mips: Fix store/load gp registers to/from ucontext_t 2017-06-13 21:34:45 +00:00
setrlimit64.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
shlib-versions Remove configuration name patterns from shlib-versions. 2014-09-12 12:28:47 +00:00
sigaction.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
sigcontextinfo.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
swapcontext.S mips: Fix store/load gp registers to/from ucontext_t 2017-06-13 21:34:45 +00:00
syscalls.list Consolidate Linux send implementation 2017-03-09 15:22:06 +01:00
sysdep-cancel.h Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
ucontext_i.sym Move mips from ports to libc. 2014-02-10 23:30:21 +00:00
ustat.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
Versions VDSO support for MIPS 2016-04-12 11:05:13 +01:00
vfork.S Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00
xstatconv.c Update copyright dates with scripts/update-copyrights. 2017-01-01 00:14:16 +00:00