[Libunwind-devel] [patch] fetch16 and fetch32 should not assert

[Paul Pluzhnikov]

Greetings,

In src/ppc64/Gstep.c, we use fetch32 to fetch instruction from the
inferior process. In  UNW_REMOTE case, fetch32 asserts that the
address we are fetching from is aligned.

But if the inferior is corrupt, we can get unaligned IP, and hit the assert.

Attached patch removes the assert, and makes fetch32 (and fetch16)
return -UNW_EINVAL instead.

-- 
Paul Pluzhnikov

libunwind-20170404.txt
Description: Text document