https://bugs.kde.org/show_bug.cgi?id=417281
--- Comment #1 from Andreas Arnez <ar...@linux.ibm.com> --- The crash happens in glibc's elf/dl-lookup.c in do_lookup_x, when trying to access the first element of the array 'list'. It seems that the register containing the address is corrupted; it was just copied from %r4 into %r6, but the values differ. Some observations: • When using `--vex-guest-max-insns=40' or lower, the problem disappears. • The option `--vex-iropt-register-updates=allregs-at-each-insn' does not help. • When attaching GDB, it seems that the corruption happens on the `lgr' instruction that is supposed to copy the value from %r4. Instead of copying, %r6 is overwritten with some random (?) value: ┌──── │ 1: x/i $pc │ => 0x4009e36 <do_lookup_x+182>: lgr %r6,%r4 │ 2: /x $r4 = 0x4829f90 │ 3: /x $r6 = 0x1fff000260 │ (gdb) si │ 1: x/i $pc │ => 0x4009e3a <do_lookup_x+186>: cgije %r2,0,0x4009f34 <do_lookup_x+436> │ 2: /x $r4 = 0x4829f90 │ 3: /x $r6 = 0x10 └──── • The `lgr' instruction is affected by grail's transformation. After the transformation, the register move is performed conditionally. -- You are receiving this mail because: You are watching all bug changes.
