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UPSTREAM: mm/damon/vaddr: hide kernel pointer from damon_va_three_regions() failure log

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The failure log message for 'damon_va_three_regions()' prints the target
id, which is a 'struct pid' pointer in the case.  To avoid exposing the
kernel pointer via the log, this makes the log to use the index of the
target in the context's targets list instead.

Link: https://lkml.kernel.org/r/20211229131016.23641-4-sj@kernel.org
Signed-off-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

(cherry picked from commit 962fe7a6b1b2f9deb1b31b3344afa3b11afdf7ab)

Bug: 228223814
Signed-off-by: Hailong Tu <tuhailong@oppo.com>
Change-Id: I6b9b09a9b7024630f05ec41db030006d63f47ce1
This commit is contained in:
SeongJae Park
2022-01-14 14:10:47 -08:00
committed by Hailong Tu
parent c44028a162
commit 4c350065aa
1 changed files with 8 additions and 2 deletions
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10
mm/damon/vaddr.c
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@@ -231,13 +231,19 @@ static int damon_va_three_regions(struct damon_target *t,
static void __damon_va_init_regions(struct damon_ctx *ctx, static void __damon_va_init_regions(struct damon_ctx *ctx,
struct damon_target *t) struct damon_target *t)
{ {
struct damon_target *ti;
struct damon_region *r; struct damon_region *r;
struct damon_addr_range regions[3]; struct damon_addr_range regions[3];
unsigned long sz = 0, nr_pieces; unsigned long sz = 0, nr_pieces;
int i; int i, tidx = 0;
if (damon_va_three_regions(t, regions)) { if (damon_va_three_regions(t, regions)) {
pr_debug("Failed to get three regions of target %lu\n", t->id); damon_for_each_target(ti, ctx) {
if (ti == t)
break;
tidx++;
}
pr_debug("Failed to get three regions of %dth target\n", tidx);
return; return;
} }