diff options
| author | Alex Shi <alex.shi@linaro.org> | 2016-05-24 12:17:46 +0800 |
|---|---|---|
| committer | Alex Shi <alex.shi@linaro.org> | 2016-05-24 12:17:46 +0800 |
| commit | b5db8c3eefa4d7b7ca7934610356969fa1a4547b (patch) | |
| tree | fb2cc37b4da4b4611eb9920789a130a6c41af1e7 /arch/parisc/kernel/ptrace.c | |
| parent | 14c737514d0953f05e91103c05e975b3b5c1e469 (diff) | |
| parent | 6c1be3bf831c5b1f2ba51425315287df2c350633 (diff) | |
Merge branch 'linux-linaro-lsk-v3.18' into linux-linaro-lsk-v3.18-androidlsk-v3.18-16.05-android
Diffstat (limited to 'arch/parisc/kernel/ptrace.c')
| -rw-r--r-- | arch/parisc/kernel/ptrace.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/arch/parisc/kernel/ptrace.c b/arch/parisc/kernel/ptrace.c index 9585c81f755f..ce0b2b4075c7 100644 --- a/arch/parisc/kernel/ptrace.c +++ b/arch/parisc/kernel/ptrace.c @@ -269,14 +269,19 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request, long do_syscall_trace_enter(struct pt_regs *regs) { - long ret = 0; - /* Do the secure computing check first. */ secure_computing_strict(regs->gr[20]); if (test_thread_flag(TIF_SYSCALL_TRACE) && - tracehook_report_syscall_entry(regs)) - ret = -1L; + tracehook_report_syscall_entry(regs)) { + /* + * Tracing decided this syscall should not happen or the + * debugger stored an invalid system call number. Skip + * the system call and the system call restart handling. + */ + regs->gr[20] = -1UL; + goto out; + } #ifdef CONFIG_64BIT if (!is_compat_task()) @@ -290,7 +295,8 @@ long do_syscall_trace_enter(struct pt_regs *regs) regs->gr[24] & 0xffffffff, regs->gr[23] & 0xffffffff); - return ret ? : regs->gr[20]; +out: + return regs->gr[20]; } void do_syscall_trace_exit(struct pt_regs *regs) |