Thomas,
On Wed, May 24, 2017 at 12:45 AM, Thomas Meyer <tho...@m3y3r.de> wrote:
> When ptrace fails to set GP/FP regs for the target process,
> log the error before crashing the UML kernel.
>
> Signed-off-by: Thomas Meyer <tho...@m3y3r.de>
> ---
> arch/um/os-Linux/skas/process.c | 10 ++++++++--
> 1 file changed, 8 insertions(+), 2 deletions(-)
>
> diff --git a/arch/um/os-Linux/skas/process.c b/arch/um/os-Linux/skas/process.c
> index 4530867..819d686 100644
> --- a/arch/um/os-Linux/skas/process.c
> +++ b/arch/um/os-Linux/skas/process.c
> @@ -352,11 +352,17 @@ void userspace(struct uml_pt_regs *regs)
> * fail. In this case, there is nothing to do but
> * just kill the process.
> */
> - if (ptrace(PTRACE_SETREGS, pid, 0, regs->gp))
> + if (ptrace(PTRACE_SETREGS, pid, 0, regs->gp)) {
> + printk(UM_KERN_ERR "userspace - ptrace set regs "
> + "failed, errno = %d\n", errno);
> fatal_sigsegv();
> + }
>
> - if (put_fp_registers(pid, regs->fp))
> + if (put_fp_registers(pid, regs->fp)) {
> + printk(UM_KERN_ERR "userspace - ptrace set fp regs "
> + "failed, errno = %d\n", errno);
> fatal_sigsegv();
> + }
>
> /* Now we set local_using_sysemu to be used for one loop */
> local_using_sysemu = get_using_sysemu();
>
> ------------------------------------------------------------------------------
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, Slashdot.org! http://sdm.link/slashdot
> _______________________________________________
> User-mode-linux-devel mailing list
> User-mode-linux-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
This patch is also malformed. :-(
--
Thanks,
//richard
------------------------------------------------------------------------------
Check out the vibrant tech community on one of the world's most
engaging tech sites, Slashdot.org! http://sdm.link/slashdot
_______________________________________________
User-mode-linux-devel mailing list
User-mode-linux-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
