I don't know whether this is the cause of the problem, but ltrace makes
(incorrect) use of the PTRACE_SINGLESTEP ptrace() call.

Support for this ptrace call has been removed from the kernel as of
v2.6.38-rc4, since it had few users, was already substantially broken
for ARM and didn't support Thumb code at all.

If ltrace is still implicitly relying on this ptrace call working, it
needs porting.

Cheers
---Dave

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https://bugs.launchpad.net/bugs/771805

Title:
  [armel] ltrace hangs

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