The patch titled
mm-variable-length-argument-support-fix
has been added to the -mm tree. Its filename is
mm-variable-length-argument-support-fix.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: mm-variable-length-argument-support-fix
From: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Ollie Wild <aaw@xxxxxxxxxx>
Cc: "Luck, Tony" <tony.luck@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/exec.c | 17 +++++++++++++++++
1 files changed, 17 insertions(+)
diff -puN fs/exec.c~mm-variable-length-argument-support-fix fs/exec.c
--- a/fs/exec.c~mm-variable-length-argument-support-fix
+++ a/fs/exec.c
@@ -199,6 +199,23 @@ static struct page *get_arg_page(struct
if (ret <= 0)
return NULL;
+ if (write) {
+ struct rlimit *rlim = current->signal->rlim;
+ unsigned long size = bprm->vma->vm_end - bprm->vma->vm_start;
+
+ /*
+ * Limit to 1/4-th the stack size for the argv+env strings.
+ * This ensures that:
+ * - the remaining binfmt code will not run out of stack space,
+ * - the program will have a reasonable amount of stack left
+ * to work from.
+ */
+ if (size > rlim[RLIMIT_STACK].rlim_cur / 4) {
+ put_page(page);
+ return NULL;
+ }
+ }
+
return page;
}
_
Patches currently in -mm which might be from a.p.zijlstra@xxxxxxxxx are
lumpy-reclaim-v4.patch
split-mmap.patch
only-allow-nonlinear-vmas-for-ram-backed-filesystems.patch
percpu_counters-use-cpu-notifiers.patch
percpu_counters-use-for_each_online_cpu.patch
intel-iommu-dmar-detection-and-parsing-logic.patch
intel-iommu-pci-generic-helper-function.patch
intel-iommu-pci-generic-helper-function-fix.patch
intel-iommu-clflush_cache_range-now-takes-size-param.patch
intel-iommu-iova-allocation-and-management-routines.patch
intel-iommu-iova-allocation-and-management-routines-fix.patch
intel-iommu-intel-iommu-driver.patch
intel-iommu-intel-iommu-driver-fix.patch
intel-iommu-avoid-memory-allocation-failures-in-dma-map-api-calls.patch
intel-iommu-intel-iommu-cmdline-option-forcedac.patch
intel-iommu-dmar-fault-handling-support.patch
intel-iommu-iommu-gfx-workaround.patch
intel-iommu-iommu-floppy-workaround.patch
intel-iommu-iommu-floppy-workaround-fix.patch
arch-personality-independent-stack-top.patch
audit-rework-execve-audit.patch
mm-variable-length-argument-support.patch
mm-variable-length-argument-support-fix.patch
fix-raw_spinlock_t-vs-lockdep.patch
lockdep-sanitise-config_prove_locking.patch
lockdep-reduce-the-ifdeffery.patch
lockstat-core-infrastructure.patch
lockstat-core-infrastructure-fix.patch
lockstat-core-infrastructure-fix-fix.patch
lockstat-core-infrastructure-fix-fix-fix.patch
lockstat-human-readability-tweaks.patch
lockstat-human-readability-tweaks-fix.patch
lockstat-hook-into-spinlock_t-rwlock_t-rwsem-and-mutex.patch
lockdep-various-fixes.patch
lockdep-various-fixes-checkpatch.patch
lockdep-fixup-sk_callback_lock-annotation.patch
lockstat-measure-lock-bouncing.patch
lockstat-measure-lock-bouncing-checkpatch.patch
lockstat-better-class-name-representation.patch
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