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| author | Qing Zhang <zhangqing@loongson.cn> | 2023-04-19 07:07:27 +0300 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn> | 2023-04-19 07:07:27 +0300 |
| commit | e32b3b8222204df8a2642a770f79ec2d7086faed (patch) | |
| tree | 8c28e5e7fccb2c63be38a932a0263664b995726c /arch/loongarch | |
| parent | ff9f3d7aefddbaa9a9b0f18f83e4319b5cd0e63e (diff) | |
| download | linux-e32b3b8222204df8a2642a770f79ec2d7086faed.tar.xz | |
LoongArch: Adjust user_regset_copyin parameter to the correct offset
Ensure that user_watch_state can be set correctly by the user.
Signed-off-by: Qing Zhang <zhangqing@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
Diffstat (limited to 'arch/loongarch')
| -rw-r--r-- | arch/loongarch/kernel/ptrace.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/arch/loongarch/kernel/ptrace.c b/arch/loongarch/kernel/ptrace.c index bb2e1af135ea..5fcffb452367 100644 --- a/arch/loongarch/kernel/ptrace.c +++ b/arch/loongarch/kernel/ptrace.c @@ -546,7 +546,7 @@ static int hw_break_get(struct task_struct *target, membuf_write(&to, &info, sizeof(info)); - /* (address, ctrl) registers */ + /* (address, mask, ctrl) registers */ while (to.left) { ret = ptrace_hbp_get_addr(note_type, target, idx, &addr); if (ret) @@ -584,7 +584,7 @@ static int hw_break_set(struct task_struct *target, offset = offsetof(struct user_watch_state, dbg_regs); user_regset_copyin_ignore(&pos, &count, &kbuf, &ubuf, 0, offset); - /* (address, ctrl) registers */ + /* (address, mask, ctrl) registers */ limit = regset->n * regset->size; while (count && offset < limit) { if (count < PTRACE_HBP_ADDR_SZ) @@ -604,7 +604,7 @@ static int hw_break_set(struct task_struct *target, break; ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, &mask, - offset, offset + PTRACE_HBP_ADDR_SZ); + offset, offset + PTRACE_HBP_MASK_SZ); if (ret) return ret; @@ -613,8 +613,8 @@ static int hw_break_set(struct task_struct *target, return ret; offset += PTRACE_HBP_MASK_SZ; - ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, &mask, - offset, offset + PTRACE_HBP_MASK_SZ); + ret = user_regset_copyin(&pos, &count, &kbuf, &ubuf, &ctrl, + offset, offset + PTRACE_HBP_CTRL_SZ); if (ret) return ret; |