The patch titled
Subject: kcov-prefault-the-kcov_area-fix-fix
has been added to the -mm tree. Its filename is
kcov-prefault-the-kcov_area-fix-fix.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/kcov-prefault-the-kcov_area-fix-fix.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/kcov-prefault-the-kcov_area-fix-fix.patch
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------------------------------------------------------
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: kcov-prefault-the-kcov_area-fix-fix
add comment explaining kcov_fault_in_area()
Cc: Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx>
Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Mark Rutland <mark.rutland@xxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/kcov.c | 4 ++++
1 file changed, 4 insertions(+)
diff -puN kernel/kcov.c~kcov-prefault-the-kcov_area-fix-fix kernel/kcov.c
--- a/kernel/kcov.c~kcov-prefault-the-kcov_area-fix-fix
+++ a/kernel/kcov.c
@@ -324,6 +324,10 @@ static int kcov_close(struct inode *inod
return 0;
}
+/*
+ * fault in a lazily-faulted vmalloc area, to avoid recursion issues if the
+ * vmalloc fault handler itself is instrumented.
+ */
static void kcov_fault_in_area(struct kcov *kcov)
{
unsigned long stride = PAGE_SIZE / sizeof(unsigned long);
_
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
i-need-old-gcc.patch
z3fold-fix-reclaim-lock-ups-checkpatch-fixes.patch
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mm.patch
zram-introduce-zram-memory-tracking-fix.patch
zram-introduce-zram-memory-tracking-update-fix.patch
zram-introduce-zram-memory-tracking-update-fix-fix.patch
mm-check-for-sigkill-inside-dup_mmap-loop-fix.patch
mm-vmalloc-pass-proper-vm_start-into-debugobjects-fix.patch
mm-shmem-make-statst_blksize-return-huge-page-size-if-thp-is-on-fix.patch
mm-memcontrolc-add-mem_cgroup_from_task-as-a-local-helper.patch
list_lru-prefetch-neighboring-list-entries-before-acquiring-lock-fix.patch
mm-oom-cgroup-aware-oom-killer-fix.patch
mm-oom-cgroup-aware-oom-killer-fix-2.patch
mm-oom-docs-describe-the-cgroup-aware-oom-killer-fix-2-fix.patch
mm-oom-cgroup-aware-oom-killer-fix-fix.patch
proc-simpler-iterations-for-proc-cmdline-fix.patch
ida-remove-simple_ida_lock-fix.patch
kcov-prefault-the-kcov_area-fix.patch
kcov-prefault-the-kcov_area-fix-fix.patch
kernel-forkc-export-kernel_thread-to-modules.patch
slab-leaks3-default-y.patch
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