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| author | Michal Simek <michal.simek@xilinx.com> | 2013-08-13 16:00:53 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-08-20 08:43:02 -0700 |
| commit | 4f01c72ef36d3305d6273fe7f1f6670c52745c3d (patch) | |
| tree | ab71ffb7a755c453f84a2aaf37fe285d0bcdcd31 /arch | |
| parent | 0dcf19b4fb41449de4d1f953f86aa6a90accdff5 (diff) | |
| download | linux-stable-4f01c72ef36d3305d6273fe7f1f6670c52745c3d.tar.gz linux-stable-4f01c72ef36d3305d6273fe7f1f6670c52745c3d.tar.bz2 linux-stable-4f01c72ef36d3305d6273fe7f1f6670c52745c3d.zip | |
microblaze: fix clone syscall
commit dfa9771a7c4784bafd0673bc7abcee3813088b77 upstream.
Fix inadvertent breakage in the clone syscall ABI for Microblaze that
was introduced in commit f3268edbe6fe ("microblaze: switch to generic
fork/vfork/clone").
The Microblaze syscall ABI for clone takes the parent tid address in the
4th argument; the third argument slot is used for the stack size. The
incorrectly-used CLONE_BACKWARDS type assigned parent tid to the 3rd
slot.
This commit restores the original ABI so that existing userspace libc
code will work correctly.
All kernel versions from v3.8-rc1 were affected.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/Kconfig | 6 | ||||
| -rw-r--r-- | arch/microblaze/Kconfig | 2 |
2 files changed, 7 insertions, 1 deletions
diff --git a/arch/Kconfig b/arch/Kconfig index a4429bcd609e..00e3702ec79b 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -404,6 +404,12 @@ config CLONE_BACKWARDS2 help Architecture has the first two arguments of clone(2) swapped. +config CLONE_BACKWARDS3 + bool + help + Architecture has tls passed as the 3rd argument of clone(2), + not the 5th one. + config ODD_RT_SIGACTION bool help diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig index d22a4ecffff4..4fab52294d98 100644 --- a/arch/microblaze/Kconfig +++ b/arch/microblaze/Kconfig @@ -28,7 +28,7 @@ config MICROBLAZE select GENERIC_CLOCKEVENTS select GENERIC_IDLE_POLL_SETUP select MODULES_USE_ELF_RELA - select CLONE_BACKWARDS + select CLONE_BACKWARDS3 config SWAP def_bool n |