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mm/kmemleak: use PF_KTHREAD flag to detect kernel threads

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Replace the current->mm check with PF_KTHREAD flag for more reliable
kernel thread detection in scan_should_stop().  The PF_KTHREAD flag is the
standard way to identify kernel threads and is not affected by temporary
mm borrowing via kthread_use_mm() (although kmemleak does not currently
encounter such cases, this makes the code more robust).

No functional change.

Link: https://lkml.kernel.org/r/20260130093729.2045858-3-zhongqiu.han@oss.qualcomm.com
Signed-off-by: Zhongqiu Han <zhongqiu.han@oss.qualcomm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Zhongqiu Han
2026-01-30 17:37:29 +08:00
committed by Andrew Morton
parent fc9ef2978d
commit c2d9196541
1 changed files with 3 additions and 3 deletions
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6
mm/kmemleak.c
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@@ -1505,10 +1505,10 @@ static int scan_should_stop(void)
* This function may be called from either process or kthread context,
* hence the need to check for both stop conditions.
*/
if (current->mm)
return signal_pending(current);
if (current->flags & PF_KTHREAD)
return kthread_should_stop();
return kthread_should_stop();
return signal_pending(current);
}
/*