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| author | Will Deacon <will@kernel.org> | 2020-07-10 13:20:57 +0100 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2020-07-16 11:42:08 +0100 |
| commit | d83ee6e3e75db6f518ef2b0858f163849f2ddeb7 (patch) | |
| tree | fd08a028af7aae9121e697d1eae8bb401b4891eb | |
| parent | 139dbe5d8ed383cbd1ada56c78dbbbd35bf6a9d3 (diff) | |
| download | mvebu-d83ee6e3e75db6f518ef2b0858f163849f2ddeb7.tar.gz | |
arm64: ptrace: Use NO_SYSCALL instead of -1 in syscall_trace_enter()
Setting a system call number of -1 is special, as it indicates that the
current system call should be skipped.
Use NO_SYSCALL instead of -1 when checking for this scenario, which is
different from the -1 returned due to a seccomp failure.
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Keno Fischer <keno@juliacomputing.com>
Cc: Luis Machado <luis.machado@linaro.org>
Signed-off-by: Will Deacon <will@kernel.org>
| -rw-r--r-- | arch/arm64/kernel/ptrace.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm64/kernel/ptrace.c b/arch/arm64/kernel/ptrace.c index 89fbee3991a201..1e02e98e68dd37 100644 --- a/arch/arm64/kernel/ptrace.c +++ b/arch/arm64/kernel/ptrace.c @@ -1856,12 +1856,12 @@ int syscall_trace_enter(struct pt_regs *regs) if (flags & (_TIF_SYSCALL_EMU | _TIF_SYSCALL_TRACE)) { tracehook_report_syscall(regs, PTRACE_SYSCALL_ENTER); if (!in_syscall(regs) || (flags & _TIF_SYSCALL_EMU)) - return -1; + return NO_SYSCALL; } /* Do the secure computing after ptrace; failures should be fast. */ if (secure_computing() == -1) - return -1; + return NO_SYSCALL; if (test_thread_flag(TIF_SYSCALL_TRACEPOINT)) trace_sys_enter(regs, regs->syscallno); |