xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Browse Source 
Pull rseq fixes from Thomas Gleixer:
 "A pile of rseq related fixups:

   - Prevent infinite recursion when delivering SIGSEGV

   - Remove the abort of rseq critical section on fork() as syscalls
     inside rseq critical sections are explicitely forbidden. So no
     point in doing the abort on the child.

   - Align the rseq structure on 32 bytes in the ARM selftest code.

   - Fix file permissions of the test script"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  rseq: Avoid infinite recursion when delivering SIGSEGV
  rseq/cleanup: Do not abort rseq c.s. in child on fork()
  rseq/selftests/arm: Align 'struct rseq_cs' on 32 bytes
  rseq/selftests: Make run_param_test.sh executable
This commit is contained in:
Linus Torvalds
2018-06-24 20:18:19 +08:00
parent 64dd76559d 784e0300fe
commit 2ce413ec16
8 changed files with 23 additions and 20 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
kernel/rseq.c
View File

@@ -251,10 +251,10 @@ static int rseq_ip_fixup(struct pt_regs *regs)
* respect to other threads scheduled on the same CPU, and with respect
* to signal handlers.
*/
void __rseq_handle_notify_resume(struct pt_regs *regs)
void __rseq_handle_notify_resume(struct ksignal *ksig, struct pt_regs *regs)
{
struct task_struct *t = current;
int ret;
int ret, sig;
if (unlikely(t->flags & PF_EXITING))
return;
@@ -268,7 +268,8 @@ void __rseq_handle_notify_resume(struct pt_regs *regs)
return;
error:
force_sig(SIGSEGV, t);
sig = ksig ? ksig->sig : 0;
force_sigsegv(sig, t);
}
#ifdef CONFIG_DEBUG_RSEQ