linux/arch/x86
Roland McGrath c09249f8d1 x86-64: fix int $0x80 -ENOSYS return
One of my past fixes to this code introduced a different new bug.
When using 32-bit "int $0x80" entry for a bogus syscall number,
the return value is not correctly set to -ENOSYS.  This only happens
when neither syscall-audit nor syscall tracing is enabled (i.e., never
seen if auditd ever started).  Test program:

	/* gcc -o int80-badsys -m32 -g int80-badsys.c
	   Run on x86-64 kernel.
	   Note to reproduce the bug you need auditd never to have started.  */

	#include <errno.h>
	#include <stdio.h>

	int
	main (void)
	{
	  long res;
	  asm ("int $0x80" : "=a" (res) : "0" (99999));
	  printf ("bad syscall returns %ld\n", res);
	  return res != -ENOSYS;
	}

The fix makes the int $0x80 path match the sysenter and syscall paths.

Reported-by: Dmitry V. Levin <ldv@altlinux.org>
Signed-off-by: Roland McGrath <roland@redhat.com>
2009-02-06 18:22:29 -08:00
..
boot x86 setup: fix asm constraints in vesa_store_edid 2009-01-30 23:55:25 +01:00
configs eeprom: More consistent symbol names 2009-01-26 21:19:57 +01:00
crypto crypto: crc32c-intel - Switch to shash 2008-12-25 11:01:37 +11:00
ia32 x86-64: fix int $0x80 -ENOSYS return 2009-02-06 18:22:29 -08:00
include/asm headers_check fix: x86, swab.h 2009-01-31 00:19:32 +05:30
kernel Merge branch 'core/xen' into x86/urgent 2009-02-04 14:54:56 +01:00
kvm KVM: change KVM to use IOMMU API 2009-01-03 14:11:07 +01:00
lguest lguest: typos fix 2009-01-30 11:34:10 +10:30
lib x86: use early clobbers in usercopy*.c 2009-01-21 09:43:17 +01:00
mach-default x86/Voyager: make it build and boot 2009-01-31 18:26:07 +01:00
mach-generic x86: rename all fields of mpc_table mpc_X to X 2009-01-05 14:08:34 +01:00
mach-rdc321x
mach-voyager x86/Voyager: make it build and boot 2009-01-31 18:26:07 +01:00
math-emu
mm prevent kprobes from catching spurious page faults 2009-02-05 17:01:50 -08:00
oprofile Merge branch 'oprofile/ring_buffer' into oprofile/oprofile-for-tip 2009-01-08 14:27:34 +01:00
pci PCI: irq and pci_ids patch for Intel Tigerpoint DeviceIDs 2009-01-27 09:46:08 -08:00
power
vdso Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6 2008-12-28 12:33:21 -08:00
video
xen xen: disable interrupts before saving in percpu 2009-02-03 17:22:40 -08:00
Kconfig x86: offer frame pointers in all build modes 2009-01-07 11:18:59 +01:00
Kconfig.cpu X86_DEBUGCTLMSR won't work on uml 2009-01-05 17:41:45 -08:00
Kconfig.debug Merge branch 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2008-12-28 12:21:10 -08:00
Makefile
Makefile_32.cpu