Hi Andy, On 06/21/2016 12:39 AM, Andy Lutomirski wrote: > Suppose a 64-bit task A traces a 32-bit task B.
I gave your x86/ptrace branch a try: https://git.kernel.org/cgit/linux/kernel/git/luto/linux.git/log/?h=x86/ptrace (this looks to be the same patch set.) Unfortunately, with gdb git master, I still get the 64-bit ptracer x 32-bit ptracee problem: (gdb) r Starting program: interrupt.32 talk to me baby ^C Program received signal SIGINT, Interrupt. 0xf7fd9d09 in __kernel_vsyscall () (gdb) p func1 () $1 = 4 (gdb) c Continuing. Unknown error 512 [Inferior 1 (process 2198) exited with code 01] (gdb) q Is this expected? This is the same testcase as before: https://sourceware.org/ml/gdb/2014-05/msg00004.html Thanks, Pedro Alves
