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a=lCpzRmAYbLLaTzLvsPZ7Mbvzbb8=:19 a=xqWC_Br6kY4A:10 a=kj9zAlcOel0A:10 a=6UeiqGixMTsA:10 a=GoEa3M9JfhUA:10 a=VkNPw1HP01LnGYTKEx00:22 a=yPCof4ZbAAAA:8 a=s5JDV1NXMDPXgfZcC0YA:9 a=CjuIK1q_8ugA:10 a=cPQSjfK2_nFv0Q5t_7PE:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMTEwMDE1NiBTYWx0ZWRfXwYTnDXkVS9/D nr/BvdOBq70nDQ+vynGKQVR+NVLlm2ybXyZSKbteXHGm9s+J+1ZNJsONauyoBJY1yvLf/YTZIDq VVKbw4m7K1Jwc2z5QXw7GVAqINBU5omxbq+Uex28g9+RTSlogJBoZN54sLZgqEZVuAtxfMj+OTJ AT6dwVR2ZrEKDxwe7xAS6J6UTBeJlF08D2A4NsuZCfFlKrZRiV0PuFHXY/cUjE5um52+jWcu0aS MPGUoGKkuKvwuxI6teQantPmP8zJD7Pd6gOiLz7s9/5YUw8DQgf2mtXo8SfSvK8DUpkEg8Zqx7X Z8UJEzrXxq9WFeNwLneqv5y5y57UFuI5C3PU6IVVzVKRBC9T6XzMkRes21JeS61lkeuycENw0Qr 1W1AbIW7KIfMtTz/uKXck+CV1AYofA== X-Proofpoint-GUID: LY1EmBcdfmOqwuwQyxGqPWjpUdi_ORNY X-Proofpoint-ORIG-GUID: LY1EmBcdfmOqwuwQyxGqPWjpUdi_ORNY On Mon, Nov 10, 2025 at 07:48:33PM +0000, Lorenzo Stoakes wrote: > On Tue, Nov 11, 2025 at 01:10:03AM +0530, Garg, Shivank wrote: > > I bisected the crash on mm-unstable > > > > b14d61d8fe442b1cc2d7591cf040a6dcd7fe2dd8 is the first bad commit > > commit b14d61d8fe442b1cc2d7591cf040a6dcd7fe2dd8 > > Author: Lorenzo Stoakes > > Date: Sat Nov 8 17:08:18 2025 +0000 > > > > mm: eliminate is_swap_pte() when softleaf_from_pte() suffices > > > > In cases where we can simply utilise the fact that softleaf_from_pte() > > treats present entries as if they were none entries and thus eliminate > > spurious uses of is_swap_pte(), do so. > > > > No functional change intended. > > Ah fun :) > > Thanks, this is very likely a bug that I am about to fix in the series that > was reported on review. > > Could you try the attached fix-patch please? > > Note that this might not apply against mm-unstable, in which case replace > 'softleaf' with 'leafent' :) as there was a rename in v2. > > Cheers, Lorenzo > > ----8<---- > From ab4d93d299f0a0ca3f1fa5e75b2ac646695b632e Mon Sep 17 00:00:00 2001 > From: Lorenzo Stoakes > Date: Mon, 10 Nov 2025 19:46:55 +0000 > Subject: [PATCH] fixup > > Signed-off-by: Lorenzo Stoakes > --- > include/linux/leafops.h | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/include/linux/leafops.h b/include/linux/leafops.h > index a464a7e08c76..325cc87c3363 100644 > --- a/include/linux/leafops.h > +++ b/include/linux/leafops.h > @@ -56,7 +56,7 @@ static inline softleaf_t softleaf_from_pte(pte_t pte) > { > softleaf_t arch_entry; > > - if (pte_present(pte)) > + if (pte_present(pte) || pte_none()) Sorry that should be pte_none(pte)... obviously! It's late here :) > return softleaf_mk_none(); > > pte = pte_swp_clear_flags(pte); > @@ -95,7 +95,7 @@ static inline softleaf_t softleaf_from_pmd(pmd_t pmd) > { > softleaf_t arch_entry; > > - if (pmd_present(pmd)) > + if (pmd_present(pmd) || pmd_none(pmd)) > return softleaf_mk_none(); > > if (pmd_swp_soft_dirty(pmd)) > -- > 2.51.0 > > Thanks, Lorenzo