Re: [PATCH v8 0/1] kasan: Avoid sleepable page allocation from atomic context

On 5/13/25 5:21 PM, Alexander Gordeev wrote:

Hi All,

Chages since v7:

• drop "unnecessary free pages" optimization
• fix error path page leak

Chages since v6:

• do not unnecessary free pages across iterations

Have you looked at boot failure report from kernel test robot ? https://lkml.kernel.org/r/202505121313.806a632c-lkp@intel.com

I think the report is for v6 version, but I don't see evidence that it was addressed, so the v8 is probably affected as well?

Chages since v5:

• full error message included into commit description

Chages since v4:

• unused pages leak is avoided

Chages since v3:

• pfn_to_virt() changed to page_to_virt() due to compile error

Chages since v2:

• page allocation moved out of the atomic context

Chages since v1:

• Fixes: and -stable tags added to the patch description

Thanks!

Alexander Gordeev (1): kasan: Avoid sleepable page allocation from atomic context

mm/kasan/shadow.c | 77 ++++++++++++++++++++++++++++++++++++++--------- 1 file changed, 63 insertions(+), 14 deletions(-)