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| author | Ingo Molnar <mingo@kernel.org> | 2016-04-19 11:38:52 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-04-19 11:38:52 +0300 |
| commit | 6666ea558b1f4134291c15ac59366f69c2d1f321 (patch) | |
| tree | 99e4204b51e69a12721123d3bb1912f6ca0a2726 /arch/parisc/kernel/ptrace.c | |
| parent | 91ed140d6c1e168b11bbbddac4f6066f40a0c6b5 (diff) | |
| parent | c3b46c73264b03000d1e18b22f5caf63332547c9 (diff) | |
| download | linux-6666ea558b1f4134291c15ac59366f69c2d1f321.tar.xz | |
Merge tag 'v4.6-rc4' into x86/asm, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/parisc/kernel/ptrace.c')
| -rw-r--r-- | arch/parisc/kernel/ptrace.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/parisc/kernel/ptrace.c b/arch/parisc/kernel/ptrace.c index ce0b2b4075c7..8fb81a391599 100644 --- a/arch/parisc/kernel/ptrace.c +++ b/arch/parisc/kernel/ptrace.c @@ -270,7 +270,8 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request, long do_syscall_trace_enter(struct pt_regs *regs) { /* Do the secure computing check first. */ - secure_computing_strict(regs->gr[20]); + if (secure_computing() == -1) + return -1; if (test_thread_flag(TIF_SYSCALL_TRACE) && tracehook_report_syscall_entry(regs)) { @@ -296,7 +297,11 @@ long do_syscall_trace_enter(struct pt_regs *regs) regs->gr[23] & 0xffffffff); out: - return regs->gr[20]; + /* + * Sign extend the syscall number to 64bit since it may have been + * modified by a compat ptrace call + */ + return (int) ((u32) regs->gr[20]); } void do_syscall_trace_exit(struct pt_regs *regs) |