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Kernel: Stop back trace on a null base pointer
This silences some warnings trying to copy from null when capturing a stack trace.
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f5330304a4
Notes:
sideshowbarker
2024-07-19 02:26:03 +09:00
Author: https://github.com/tomuta Commit: https://github.com/SerenityOS/serenity/commit/f5330304a47 Pull-request: https://github.com/SerenityOS/serenity/pull/3481
@ -868,7 +868,7 @@ String Thread::backtrace_impl()
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FlatPtr stack_ptr, eip;
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if (Processor::get_context_frame_ptr(*this, stack_ptr, eip)) {
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recognized_symbols.append({ eip, symbolicate_kernel_address(eip) });
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for (;;) {
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while (stack_ptr) {
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FlatPtr retaddr;
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if (is_user_range(VirtualAddress(stack_ptr), sizeof(FlatPtr) * 2)) {
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@ -906,7 +906,7 @@ Vector<FlatPtr> Thread::raw_backtrace(FlatPtr ebp, FlatPtr eip) const
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backtrace.append(eip);
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FlatPtr stack_ptr_copy;
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FlatPtr stack_ptr = (FlatPtr)ebp;
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for (;;) {
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while (stack_ptr) {
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void* fault_at;
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if (!safe_memcpy(&stack_ptr_copy, (void*)stack_ptr, sizeof(FlatPtr), fault_at))
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break;
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