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| author | Dmitry V. Levin <ldv@altlinux.org> | 2018-11-21 22:14:39 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-12-08 13:03:37 +0100 |
| commit | d3c0999433352dacda6da37c237388bfa9bae1c2 (patch) | |
| tree | 3a1b1f2e2250c1d09c65ed5e0ce38e6817a71691 | |
| parent | 9aab50aec56772ff6e1a2dead6097cf2921fe944 (diff) | |
| download | linux-stable-d3c0999433352dacda6da37c237388bfa9bae1c2.tar.gz linux-stable-d3c0999433352dacda6da37c237388bfa9bae1c2.tar.bz2 linux-stable-d3c0999433352dacda6da37c237388bfa9bae1c2.zip | |
mips: fix mips_get_syscall_arg o32 check
commit c50cbd85cd7027d32ac5945bb60217936b4f7eaf upstream.
When checking for TIF_32BIT_REGS flag, mips_get_syscall_arg() should
use the task specified as its argument instead of the current task.
This potentially affects all syscall_get_arguments() users
who specify tasks different from the current.
Fixes: c0ff3c53d4f99 ("MIPS: Enable HAVE_ARCH_TRACEHOOK.")
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Patchwork: https://patchwork.linux-mips.org/patch/21185/
Cc: Elvira Khabirova <lineprinter@altlinux.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: stable@vger.kernel.org # v3.13+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | arch/mips/include/asm/syscall.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/mips/include/asm/syscall.h b/arch/mips/include/asm/syscall.h index 7c713025b23f..53ee82b1efa7 100644 --- a/arch/mips/include/asm/syscall.h +++ b/arch/mips/include/asm/syscall.h @@ -51,7 +51,7 @@ static inline unsigned long mips_get_syscall_arg(unsigned long *arg, #ifdef CONFIG_64BIT case 4: case 5: case 6: case 7: #ifdef CONFIG_MIPS32_O32 - if (test_thread_flag(TIF_32BIT_REGS)) + if (test_tsk_thread_flag(task, TIF_32BIT_REGS)) return get_user(*arg, (int *)usp + n); else #endif |