Re: [syzbot ci] Re: Implement a new generic pagewalk API
"Oscar Salvador (SUSE)" <[email protected]>
| Newsgroups | dev.linux.lists.syzbot,org.kernel.vger.linux-kernel,org.kvack.linux-mm |
|---|---|
| Message-ID | <[email protected]> |
On Mon, May 25, 2026 at 10:49:28PM -0700, syzbot ci wrote: > syzbot ci has tested the following series > > [v3] Implement a new generic pagewalk API > https://lore.kernel.org/all/[email protected] > * [RFC PATCH v3 1/8] mm: Add softleaf_from_pud > * [RFC PATCH v3 2/8] mm: Add {pmd,pud}_huge_lock helper > * [RFC PATCH v3 3/8] mm: Implement folio_pmd_batch > * [RFC PATCH v3 4/8] mm: Implement pt_range_walk > * [RFC PATCH v3 5/8] mm: Make /proc/pid/smaps use the new generic pagewalk API > * [RFC PATCH v3 6/8] mm: Make /proc/pid/numa_maps use the new generic pagewalk API > * [RFC PATCH v3 7/8] mm: Make /proc/pid/pagemap use the new generic pagewalk API > * [RFC PATCH v3 8/8] mm: Make /proc/pid/clear_refs use the new generic pagewalk API > > and found the following issue: > general protection fault in clear_refs_write > > Full report is available here: > https://ci.syzbot.org/series/0beab2d0-9d88-4288-ac81-b294e51c057d #syz test -- Oscar Salvador SUSE Labs
0001-fix.patch
(text/x-patch, 667 B)
From 252fd5679cc74ebe82d01d5bf1523184f7e323be Mon Sep 17 00:00:00 2001 From: Oscar Salvador <[email protected]> Date: Thu, 11 Jun 2026 13:58:44 +0200 Subject: [PATCH] fix --- fs/proc/task_mmu.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index 1134dfb3dab0..87515949b09d 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -1710,6 +1710,7 @@ static ssize_t clear_refs_write(struct file *file, const char __user *buf, else if (ret < 0) break; + flags &= ~PT_TYPE_NONE pt_type = pt_range_walk_start(&ptw, vma, vma->vm_start, vma->vm_end, flags); while (pt_type != PTW_DONE) { -- 2.35.3