[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Libunwind-devel] testing libunwind for aarch64 bigendian system

From: Yvan Roux
Subject: Re: [Libunwind-devel] testing libunwind for aarch64 bigendian system
Date: Tue, 25 Nov 2014 11:20:09 +0100


>> FAIL: run-ptrace-mapper
>> FAIL: run-ptrace-misc
>> crasher[3083]: unhandled level 2 translation fault (11) at 0x00000020,
>> FAIL: run-coredump-unwind-mdi
> These look like kernel issues related to the ptrace system call. You
> may want to report them to LKML with a minimal test program.

These failures are present in the AArch64 little endian as well.
After giving a closer look at the issue, it doesn't look at a kernel
issue, but at how ptrace is invoked the gather registers: it uses
PTRACE_PEEKUSER whereas it not supported on AArch64 where the
PTRACE_GETREGSET ptrace request should be used.  I'm testing a patch
for that, it doesn't work so far, but we can now access the registers
and then an error occurs because no unwind information are found when
we're in _start.


reply via email to

[Prev in Thread] Current Thread [Next in Thread]