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AJvYcCVTPHBvpe8/4CtXUpEEOgbYzd8BkrwDDnFbgzlgf9eX/ZfCRkTkxQ0nsH62NFd3bMhcVtu/0LPakjUt3QM=@vger.kernel.org X-Gm-Message-State: AOJu0Ywlz2PCai1rWnX45viKhVjfXFamElMiEtMdCpsT9xaGSko6wPVx N702MrjSovXQHpwMKSMSmeK5Yn34eJ/qXsazNf9YfyYPOINHTyemrpXiJdNhLLeZ9Ntg6BfF51Y mfI4tBoN831a5sbCN3wG0lqOGH8Z5PiuEnptaF9UR5NS+fqgyQGiIuKN/aqM= Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a4a:ee0d:0:b0:662:bfe5:92ed with SMTP id 006d021491bc7-6630f34ede7mr3783769eaf.22.1769941983599; Sun, 01 Feb 2026 02:33:03 -0800 (PST) Date: Sun, 01 Feb 2026 02:33:03 -0800 In-Reply-To: <20260201074823.90148-1-kartikey406@gmail.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <697f2bdf.050a0220.16b13.009e.GAE@google.com> Subject: Re: [syzbot] [kvm?] WARNING in kvm_gmem_fault_user_mapping 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 kvm_gmem_create ------------[ cut here ]------------ !mapping_unevictable(inode->i_mapping) WARNING: arch/x86/kvm/../../../virt/kvm/guest_memfd.c:601 at __kvm_gmem_create virt/kvm/guest_memfd.c:601 [inline], CPU#0: syz.0.17/6689 WARNING: arch/x86/kvm/../../../virt/kvm/guest_memfd.c:601 at kvm_gmem_create+0x389/0x780 virt/kvm/guest_memfd.c:644, CPU#0: syz.0.17/6689 Modules linked in: CPU: 0 UID: 0 PID: 6689 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026 RIP: 0010:__kvm_gmem_create virt/kvm/guest_memfd.c:601 [inline] RIP: 0010:kvm_gmem_create+0x389/0x780 virt/kvm/guest_memfd.c:644 Code: 0f 85 88 03 00 00 4d 8b ad 28 01 00 00 31 ff 49 c1 ed 03 41 83 e5 01 44 89 ee e8 c2 ac 83 00 45 84 ed 75 09 e8 68 b2 83 00 90 <0f> 0b 90 e8 5f b2 83 00 49 8d bf 78 04 00 00 48 b8 00 00 00 00 00 RSP: 0018:ffffc90003f97990 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000005 RCX: ffffffff818348ee RDX: ffff88801ebb24c0 RSI: ffffffff818348f8 RDI: ffff88801ebb24c0 RBP: ffff88805dae0000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: ffffffff82711c34 R12: ffff88801ffd5d00 R13: 0000000000000000 R14: 0000000000000003 R15: ffff88806b738048 FS: 00007f124fe386c0(0000) GS:ffff8881245d9000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b34963fff CR3: 000000002a3f2000 CR4: 00000000003526f0 Call Trace: kvm_vm_ioctl+0x1109/0x4020 virt/kvm/kvm_main.c:5397 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl fs/ioctl.c:583 [inline] __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:583 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xc9/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f124ef9aeb9 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:00007f124fe38028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f124f215fa0 RCX: 00007f124ef9aeb9 RDX: 00002000000001c0 RSI: 00000000c040aed4 RDI: 0000000000000004 RBP: 00007f124f008c1f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f124f216038 R14: 00007f124f215fa0 R15: 00007ffc8cc39a38 Tested on: commit: 162b4244 Merge tag 'iommu-fixes-v6.19-rc7' of git://gi.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1039bbfa580000 kernel config: https://syzkaller.appspot.com/x/.config?x=f1fac0919970b671 dashboard link: https://syzkaller.appspot.com/bug?extid=33a04338019ac7e43a44 compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44 patch: https://syzkaller.appspot.com/x/patch.diff?x=161ebbfa580000