On Mon, Feb 09, 2015 at 05:53:50AM +0000, Sheng Yong wrote:
> Hi, Greg,
> The commit 88b5d12 ("mm: propagate error from stack expansion even for
> guard page") for 3.10-stable makes the testcase get "bus error", while
> it had "segmentation fault" in older kernels.
>
> ===== testcase =====
> int main(void)
> {
> main();
> return 0;
> }
> ====================
>
> These 2 patches fix it by adding a VM_FAULT_SIGSEGV in all architecture
> fault handlers.
>
> [PATCH 1/2] is asjusted to ignore un-supported arch and driver in 3.10.
> And some files are separated or renamed in newer kernel, so [PATCH 1/2]
> is also adjusted to add the VM_FAULT_SIGSEGV handling in the original
> files in 3.10.
>
> thanks,
> Sheng
>
> Sheng Yong (1):
> vm: add VM_FAULT_SIGSEGV handling support
>
> Linus Torvalds (1):
> vm: make stack guard page errors return VM_FAULT_SIGSEGV rather than
> SIGBUS
Can you provide backports for 3.14-stable as well, so that I can apply
the patch to both trees?
thanks,
greg k-h
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