diff options
author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-04-23 04:02:05 -0300 |
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committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2016-04-23 04:02:05 -0300 |
commit | 394569928e2f17dff4ae367ac700048138e318c7 (patch) | |
tree | c789d2a2d107284e78f6c6558267b6984f518581 /arch/parisc/kernel/ptrace.c | |
parent | bdcfd44fb5b5fb8fd660e7f93f1095c507481024 (diff) |
Linux-libre 4.5.2-gnupck-4.5.2-gnu
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 ce0b2b407..8fb81a391 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) |