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| author |   Keno Fischer <keno@juliacomputing.com> | 2021-02-01 19:21:09 -0500 |
|---|---|---|
| committer |   Will Deacon <will@kernel.org> | 2021-02-02 21:07:56 +0000 |
| commit | 12fc4288408a8799409f7fa62a526b60e92da334 (patch) | |
| tree | 743c1a871d9d6f558f42ee83cd4e5a2ff9344833 /arch/arm64/kernel/ptrace.c | |
| parent | KVM: arm64: Move __hyp_set_vectors out of .hyp.text (diff) | |
| download | linux-dev-12fc4288408a8799409f7fa62a526b60e92da334.tar.xz linux-dev-12fc4288408a8799409f7fa62a526b60e92da334.zip | |
arm64: ptrace: Fix missing return in hw breakpoint code
When delivering a hw-breakpoint SIGTRAP to a compat task via ptrace, the
lack of a 'return' statement means we fallthrough to the native case,
which differs in its handling of 'si_errno'.
Although this looks to be harmless because the subsequent signal is
effectively ignored, it's confusing and unintentional, so add the
missing 'return'.
Signed-off-by: Keno Fischer <keno@juliacomputing.com>
Link: https://lore.kernel.org/r/20210202002109.GA624440@juliacomputing.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64/kernel/ptrace.c')
| -rw-r--r-- | arch/arm64/kernel/ptrace.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm64/kernel/ptrace.c b/arch/arm64/kernel/ptrace.c index 8ac487c84e37..3d5c8afca75b 100644 --- a/arch/arm64/kernel/ptrace.c +++ b/arch/arm64/kernel/ptrace.c @@ -194,6 +194,7 @@ static void ptrace_hbptriggered(struct perf_event *bp, } arm64_force_sig_ptrace_errno_trap(si_errno, bkpt->trigger, desc); + return; } #endif arm64_force_sig_fault(SIGTRAP, TRAP_HWBKPT, bkpt->trigger, desc); |