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LoongArch: Adjust user_regset_copyin parameter to the correct offset

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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>
This commit is contained in:
Qing Zhang 2023-04-19 12:07:27 +08:00 committed by Huacai Chen
parent ff9f3d7aef
commit e32b3b8222
1 changed files with 5 additions and 5 deletions
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10
arch/loongarch/kernel/ptrace.c
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@ -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;