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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-06-24 20:18:19 +0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-06-24 20:18:19 +0800 |
| commit | 2ce413ec1694eca3a4fa738b6d9007c728a0d40a (patch) | |
| tree | 427f27f51f48d40980b304f7e181771688dc4def /kernel | |
| parent | 64dd76559d4ba281f020af7c87f16071394d1f70 (diff) | |
| parent | 784e0300fe9fe4aa81bd7df9d59e138f56bb605b (diff) | |
Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
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
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/rseq.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/kernel/rseq.c b/kernel/rseq.c index ae306f90c514..22b6acf1ad63 100644 --- a/kernel/rseq.c +++ b/kernel/rseq.c @@ -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 |