Messages in this thread | | | Date | Mon, 6 Jan 2014 12:32:07 +0000 | From | Luis Henriques <> | Subject | Re: [PATCH 3.2 056/185] mm: ensure get_unmapped_area() returns higher address than mmap_min_addr |
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On Mon, Jan 06, 2014 at 07:19:10PM +0900, Akira Takeuchi wrote: > On Fri, 03 Jan 2014 04:26:43 +0000 > Ben Hutchings <ben@decadent.org.uk> wrote: > > > On Sun, 2013-12-29 at 03:08 +0100, Ben Hutchings wrote: > > > 3.2.54-rc1 review patch. If anyone has any objections, please let me know. > > > > > > ------------------ > > > > > > From: Akira Takeuchi <takeuchi.akr@jp.panasonic.com> > > > > > > commit 2afc745f3e3079ab16c826be4860da2529054dd2 upstream. > > [...] > > > [bwh: Backported to 3.2: > > > As we do not have vm_unmapped_area(), make arch_get_unmapped_area_topdown() > > > calculate the lower limit for the new area's end address and then compare > > > addresses with this instead of with len. In the process, fix an off-by-one > > > error which could result in returning 0 if mm->mmap_base == len.] > > > > I'm dropping this as I have no good way to test the backport (it's not > > used on x86) and I didn't get any confirmation that it's right. > > I'm sorry for delayed reply. > > Your backport seems right. > Additionally, I've confirmed the problem is resolved by your backport patch.
Sorry I'm also late for this review.
I guess this means the backport I made for the 3.5 kernel (and released on 3.5.7.26) is incorrect:
http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=commitdiff;h=745545489d25d1b9ecf2d78a8f9a31a362806d2d
Akira, could you please confirm if this is the case so that I revert it in next release?
Cheers, -- Luis
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