mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 19:00:25 +00:00
[PATCH] s390: rt_sigreturn fix
Check return code of do_sigaltstack and force a SIGSEGV if it is -EFAULT. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Cedric Le Goater <clg@fr.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
parent
a63a4931c3
commit
4e3df37e7f
2 changed files with 3 additions and 5 deletions
|
@ -467,8 +467,6 @@ asmlinkage long sys32_rt_sigreturn(struct pt_regs *regs)
|
|||
if (err)
|
||||
goto badframe;
|
||||
|
||||
/* It is more difficult to avoid calling this function than to
|
||||
call it and ignore errors. */
|
||||
set_fs (KERNEL_DS);
|
||||
do_sigaltstack((stack_t __user *)&st, NULL, regs->gprs[15]);
|
||||
set_fs (old_fs);
|
||||
|
|
|
@ -254,9 +254,9 @@ asmlinkage long sys_rt_sigreturn(struct pt_regs *regs)
|
|||
if (restore_sigregs(regs, &frame->uc.uc_mcontext))
|
||||
goto badframe;
|
||||
|
||||
/* It is more difficult to avoid calling this function than to
|
||||
call it and ignore errors. */
|
||||
do_sigaltstack(&frame->uc.uc_stack, NULL, regs->gprs[15]);
|
||||
if (do_sigaltstack(&frame->uc.uc_stack, NULL,
|
||||
regs->gprs[15]) == -EFAULT)
|
||||
goto badframe;
|
||||
return regs->gprs[2];
|
||||
|
||||
badframe:
|
||||
|
|
Loading…
Reference in a new issue