redonkable
/
remarkable-linux
1
0
Fork 0
Code Releases Activity

h8300: use set_current_blocked() and block_sigmask() 

As described in e6fa16ab ("signal: sigprocmask() should do
retarget_shared_pending()") the modification of current->blocked is
incorrect as we need to check whether the signal we're about to block is
pending in the shared queue.

Also, use the new helper function introduced in commit 5e6292c0f2
("signal: add block_sigmask() for adding sigmask to current->blocked")
which centralises the code for updating current->blocked after
successfully delivering a signal and reduces the amount of duplicate code
across architectures.  In the past some architectures got this code wrong,
so using this helper function should stop that from happening again.

Acked-by: Oleg Nesterov <oleg@redhat.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
wifi-calibration
Matt Fleming 2012-05-11 10:58:06 +10:00 committed by Al Viro
parent 9ae3679602
commit 97c47bb707
1 changed files with 9 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

33
arch/h8300/kernel/signal.c
View File

@ -57,14 +57,13 @@ asmlinkage int do_signal(struct pt_regs *regs, sigset_t *oldset);
asmlinkage int do_sigsuspend(struct pt_regs *regs)
{
old_sigset_t mask = regs->er3;
sigset_t saveset;
sigset_t saveset, blocked;
saveset = current->blocked;
mask &= _BLOCKABLE;
spin_lock_irq(&current->sighand->siglock);
saveset = current->blocked;
siginitset(&current->blocked, mask);
recalc_sigpending();
spin_unlock_irq(&current->sighand->siglock);
siginitset(&blocked, mask);
set_current_blocked(&blocked);
regs->er0 = -EINTR;
while (1) {
@ -90,11 +89,8 @@ do_rt_sigsuspend(struct pt_regs *regs)
return -EFAULT;
sigdelsetmask(&newset, ~_BLOCKABLE);
spin_lock_irq(&current->sighand->siglock);
saveset = current->blocked;
current->blocked = newset;
recalc_sigpending();
spin_unlock_irq(&current->sighand->siglock);
set_current_blocked(&newset);
regs->er0 = -EINTR;
while (1) {
@ -232,10 +228,7 @@ asmlinkage int do_sigreturn(unsigned long __unused,...)
goto badframe;
sigdelsetmask(&set, ~_BLOCKABLE);
spin_lock_irq(&current->sighand->siglock);
current->blocked = set;
recalc_sigpending();
spin_unlock_irq(&current->sighand->siglock);
set_current_blocked(&set);
if (restore_sigcontext(regs, &frame->sc, &er0))
goto badframe;
@ -260,10 +253,7 @@ asmlinkage int do_rt_sigreturn(unsigned long __unused,...)
goto badframe;
sigdelsetmask(&set, ~_BLOCKABLE);
spin_unlock_irq(&current->sighand->siglock);
current->blocked = set;
recalc_sigpending();
spin_lock_irq(&current->sighand->siglock);
set_current_blocked(&set);
if (restore_sigcontext(regs, &frame->uc.uc_mcontext, &er0))
goto badframe;
@ -489,12 +479,7 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka,
else
setup_frame(sig, ka, oldset, regs);
spin_lock_irq(&current->sighand->siglock);
sigorsets(&current->blocked,&current->blocked,&ka->sa.sa_mask);
if (!(ka->sa.sa_flags & SA_NODEFER))
sigaddset(&current->blocked,sig);
recalc_sigpending();
spin_unlock_irq(&current->sighand->siglock);
block_sigmask(ka, sig);
}
/*