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Kernel: Use copy_from_user() in ptrace(PT_PEEK)

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This commit is contained in:
Andreas Kling 2020-04-13 22:39:07 +02:00
parent 1d43544e08
commit e432a27676
1 changed files with 1 additions and 4 deletions
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5
Kernel/Ptrace.cpp
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@ -114,10 +114,7 @@ KResultOr<u32> handle_syscall(const Kernel::Syscall::SC_ptrace_params& params, P
if (result.is_error()) if (result.is_error())
return -EFAULT; return -EFAULT;
peer->process().validate_write(peek_params.out_data, sizeof(u32)); peer->process().validate_write(peek_params.out_data, sizeof(u32));
{ copy_from_user(peek_params.out_data, &result.value());
SmapDisabler disabler;
*(peek_params.out_data) = result.value();
}
break; break;
} }