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| author | Qing Zhang <zhangqing@loongson.cn> | 2023-06-15 14:35:52 +0800 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2023-06-15 14:35:52 +0800 |
| commit | 0246d0aaf0a634a65135050011767b56ba351a8f (patch) | |
| tree | 57e52d63b8753cc185baabcdc3d3e158be1652ef | |
| parent | 962369120d750cbc9c4dc492f32b4304669ff6aa (diff) | |
| download | linux-0246d0aaf0a634a65135050011767b56ba351a8f.tar.gz | |
LoongArch: Avoid uninitialized alignment_mask
The hardware monitoring points for instruction fetching and load/store
operations need to align 4 bytes and 1/2/4/8 bytes respectively.
Reported-by: Colin King <colin.i.king@gmail.com>
Signed-off-by: Qing Zhang <zhangqing@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
| -rw-r--r-- | arch/loongarch/kernel/hw_breakpoint.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/loongarch/kernel/hw_breakpoint.c b/arch/loongarch/kernel/hw_breakpoint.c index 2406c95b34cc4..021b59c248fac 100644 --- a/arch/loongarch/kernel/hw_breakpoint.c +++ b/arch/loongarch/kernel/hw_breakpoint.c @@ -396,6 +396,8 @@ int hw_breakpoint_arch_parse(struct perf_event *bp, if (hw->ctrl.type != LOONGARCH_BREAKPOINT_EXECUTE) alignment_mask = 0x7; + else + alignment_mask = 0x3; offset = hw->address & alignment_mask; hw->address &= ~alignment_mask; |