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AJvYcCXuFwI+iWtU4PbBnfCS4Hyd8H+zAABk8asQeam3tnAG1XEHwwqt5B6EG8w5EmH9Qv92wD/K9GeSGR2dRfc=@vger.kernel.org X-Gm-Message-State: AOJu0Yzb9koofnXITg8CCRhFyCxDNJRJkYkJHhlSKVrZP7RWJ4maCoC4 U5WlJTDXAVV6jYAEFdJxgji5kQXeXh1OqLBx4RSESuGIdoITFfNTaqAM55obC4jLqoRxjUyffq+ 9NLYmIDvMSQDvzHQ/kv3EUIRqMfp3LkR1T/pr9gk9F3BP+RXNkFp03dFjqJw= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:180c:b0:67b:a77a:e665 with SMTP id 006d021491bc7-67bda9c0c72mr7488386eaf.24.1773640801294; Sun, 15 Mar 2026 23:00:01 -0700 (PDT) Date: Sun, 15 Mar 2026 23:00:01 -0700 In-Reply-To: <20260316051111.546771-1-kartikey406@gmail.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69b79c61.050a0220.248e02.010d.GAE@google.com> Subject: Re: [syzbot] [mm?] WARNING in folio_add_new_anon_rmap From: syzbot To: kartikey406@gmail.com, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: WARNING in folio_add_new_anon_rmap ------------[ cut here ]------------ address < vma->vm_start || address + (nr << 12) > vma->vm_end WARNING: mm/rmap.c:1682 at folio_add_new_anon_rmap+0x5fe/0x14b0 mm/rmap.c:1681, CPU#1: syz.0.32/6592 Modules linked in: CPU: 1 UID: 0 PID: 6592 Comm: syz.0.32 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 RIP: 0010:folio_add_new_anon_rmap+0x5fe/0x14b0 mm/rmap.c:1681 Code: 89 f5 4d 8b 36 4c 89 e7 4c 89 f6 e8 0c aa a9 ff 4d 39 f4 73 1a e8 a2 a7 a9 ff 4c 8b 74 24 10 49 bc 00 00 00 00 00 fc ff df 90 <0f> 0b 90 eb 5a 44 89 f8 c1 e0 0c 48 98 49 01 c4 49 83 c5 08 4c 89 RSP: 0018:ffffc90003b175a0 EFLAGS: 00010293 RAX: ffffffff821d01ee RBX: ffffea0001c23500 RCX: ffff88802ebfdb80 RDX: 0000000000000000 RSI: 00002000004ca000 RDI: 00002000004cb000 RBP: 0000000000000000 R08: ffffea0001c23507 R09: 1ffffd40003846a0 R10: dffffc0000000000 R11: fffff940003846a1 R12: dffffc0000000000 R13: ffff888029014a08 R14: ffffea0001c23508 R15: 0000000000000001 FS: 00007f18a29856c0(0000) GS:ffff888125536000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fff5a396d70 CR3: 000000007256a000 CR4: 00000000003526f0 Call Trace: mfill_atomic_install_pte+0x578/0x870 mm/userfaultfd.c:390 __mfill_atomic_pte+0x3c4/0x5f0 mm/userfaultfd.c:533 mfill_atomic_pte_copy mm/userfaultfd.c:567 [inline] mfill_atomic_pte mm/userfaultfd.c:875 [inline] mfill_atomic mm/userfaultfd.c:933 [inline] mfill_atomic_copy+0x4d4/0x1420 mm/userfaultfd.c:960 userfaultfd_copy fs/userfaultfd.c:1642 [inline] userfaultfd_ioctl+0x2bbe/0x4c70 fs/userfaultfd.c:2059 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f18a1b9c799 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f18a2985028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f18a1e15fa0 RCX: 00007f18a1b9c799 RDX: 0000200000000040 RSI: 00000000c028aa03 RDI: 0000000000000003 RBP: 00007f18a1c32c99 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f18a1e16038 R14: 00007f18a1e15fa0 R15: 00007ffca7001d38 Tested on: commit: b84a0ebe Add linux-next specific files for 20260313 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=15fc5602580000 kernel config: https://syzkaller.appspot.com/x/.config?x=d079c776411aaf59 dashboard link: https://syzkaller.appspot.com/bug?extid=e24a2e34fad0efbac047 compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8 patch: https://syzkaller.appspot.com/x/patch.diff?x=139c5602580000