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 <th...@m3...>
---
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();
--
2.9.4
|
