Commit 72d0f9b6 authored Jun 24, 2021 by yidong zhang Committed by Christopher Ferris Jun 24, 2021

Avoid using thread cache in unwinder.



Using  thread cache will cause SIGSEGV for 32bit+kernel4.9 device.

Bug: 190579082
Bug: 189803009

Test: run cts -m CtsSeccompHostTestCases
Change-Id: I47b13d02674aadbacd8dac36d8382eed0885413c
Merged-In: I47b13d02674aadbacd8dac36d8382eed0885413c
Signed-off-by: yidong zhang <yidong.zhang@amlogic.com>
(cherry picked from commit cbf7c466)

parent 91b351ea

debuggerd/libdebuggerd/tombstone.cpp

+3 −0

Original line number	Diff line number	Diff line
		@@ -593,6 +593,9 @@ void engrave_tombstone_ucontext(int tombstone_fd, int proto_fd, uint64_t abort_m
		};

		unwindstack::UnwinderFromPid unwinder(kMaxFrames, pid, unwindstack::Regs::CurrentArch());
		auto process_memory =
		unwindstack::Memory::CreateProcessMemoryCached(getpid());
		unwinder.SetProcessMemory(process_memory);
		if (!unwinder.Init()) {
		async_safe_fatal("failed to init unwinder object");
		}