Le 06/07/2017 à 02:23, Richard Henderson a écrit :
> kernel also checks PC < gUSA region end point,
> try this:
>
> diff --git a/linux-user/signal.c b/linux-user/signal.c
> index 1e716a9..4e1e4f0 100644
> --- a/linux-user/signal.c
> +++ b/linux-user/signal.c
> @@ -3477,7 +3477,8 @@ static abi_ulong get_sigframe(struct
> target_sigaction *ka,
> static void unwind_gusa(CPUSH4State *regs)
> {
> /* If the stack pointer is sufficiently negative... */
> - if ((regs->gregs[15] & 0xc0000000u) == 0xc0000000u) {
> + if ((regs->gregs[15] & 0xc0000000u) == 0xc0000000u &&
> + regs->pc < regs->gregs[0]) {
> /* Reset the PC to before the gUSA region, as computed from
> R0 = region end, SP = -(region size), plus one more insn
> that actually sets SP to the region size. */
This fixes the segfaults for me with newer chroots.
So, just in case:
Tested-By: John Paul Adrian Glaubitz <[email protected]>
Thanks,
Adrian
--
.''`. John Paul Adrian Glaubitz
: :' : Debian Developer - [email protected]
`. `' Freie Universitaet Berlin - [email protected]
`- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913
