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AJvYcCV+cy4xthUErTYhXERqI97BikLlm42lb3Q6OBhmbwfIGUZW4c7XWTvc52wFamz0Uzzbh0U=@vger.kernel.org X-Gm-Message-State: AOJu0YxOazbOCeVF46PcMn5VmSGyNknvtMegoeXwudHrdLLVO/o5i5m+ +i/J6npFZ6QoL8aFVUg1r6J08vRs2WhKiHkwLH+MU/VvmIvtXAd6BKLF/k7AZw93UusrbqLrpEc hiC/1HWi/btbnevz4x1e+vDfn88rMbrq/mtFk1cnwNgaOXHyUIkfKxLNhccc= Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6820:2913:b0:679:e7b2:9fb8 with SMTP id 006d021491bc7-679fadb8af6mr4205368eaf.14.1772279180960; Sat, 28 Feb 2026 03:46:20 -0800 (PST) Date: Sat, 28 Feb 2026 03:46:20 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <69a2d58c.050a0220.3a55be.003b.GAE@google.com> Subject: [syzbot] [kvmarm?] [kvm?] BUG: unable to handle kernel paging request in kvm_vgic_destroy From: syzbot To: catalin.marinas@arm.com, joey.gouly@arm.com, kvm@vger.kernel.org, kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, maz@kernel.org, oupton@kernel.org, suzuki.poulose@arm.com, syzkaller-bugs@googlegroups.com, will@kernel.org, yuzenghui@huawei.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 6316366129d2 Merge branch kvm-arm64/misc-6.20 into kvmarm-.. git tree: git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm.git next console output: https://syzkaller.appspot.com/x/log.txt?x=15e59c4a580000 kernel config: https://syzkaller.appspot.com/x/.config?x=148fc9aa8e041d0a dashboard link: https://syzkaller.appspot.com/bug?extid=f6a46b038fc243ac0175 compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8 userspace arch: arm64 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13182006580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=173900ba580000 Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/fa3fbcfdac58/non_bootable_disk-63163661.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/1018400deda3/vmlinux-63163661.xz kernel image: https://storage.googleapis.com/syzbot-assets/fb8a8bb5d8a4/Image-63163661.gz.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+f6a46b038fc243ac0175@syzkaller.appspotmail.com __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x90/0x230 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x120/0x2f4 arch/arm64/kernel/syscall.c:132 do_el0_svc+0x58/0x74 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x238 arch/arm64/kernel/entry-common.c:724 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 Unable to handle kernel paging request at virtual address ffef800000000000 KASAN: maybe wild-memory-access in range [0xff00000000000000-0xff0000000000000f] Mem abort info: ESR = 0x0000000096000004 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x04: level 0 translation fault Data abort info: ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000 CM = 0, WnR = 0, TnD = 0, TagAccess = 0 GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [ffef800000000000] address between user and kernel address ranges Internal error: Oops: 0000000096000004 [#1] SMP Modules linked in: CPU: 0 UID: 0 PID: 3651 Comm: syz.2.17 Not tainted syzkaller #0 PREEMPT Hardware name: linux,dummy-virt (DT) pstate: 01402009 (nzcv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--) pc : kvm_vgic_dist_destroy arch/arm64/kvm/vgic/vgic-init.c:445 [inline] pc : kvm_vgic_destroy+0x2d4/0x624 arch/arm64/kvm/vgic/vgic-init.c:518 lr : kvm_vgic_dist_destroy arch/arm64/kvm/vgic/vgic-init.c:444 [inline] lr : kvm_vgic_destroy+0x290/0x624 arch/arm64/kvm/vgic/vgic-init.c:518 sp : ffff80008e647b90 x29: ffff80008e647ba0 x28: 0000000000000005 x27: cdf00000200a52d8 x26: cdf00000200a4db0 x25: 00000000000000cd x24: cdf00000200a4d8c x23: 00000000000000cd x22: 00000000000000cd x21: cdf00000200a4ad0 x20: efff800000000000 x19: cdf00000200a4000 x18: 00000000030f4b63 x17: 0000000000000031 x16: 0000000000000000 x15: ffff800088209a68 x14: ffffffffffffffff x13: 0000000000000028 x12: 5df000001795c1f0 x11: ffff800088209a68 x10: 0000000000ff0100 x9 : 0ff0000000000000 x8 : 0000000000000000 x7 : ffff80008672f958 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000002 x2 : 0000000000000008 x1 : 0000000000000000 x0 : 0000000000000007 Call trace: kvm_vgic_dist_destroy arch/arm64/kvm/vgic/vgic-init.c:445 [inline] (P) kvm_vgic_destroy+0x2d4/0x624 arch/arm64/kvm/vgic/vgic-init.c:518 (P) kvm_arch_destroy_vm+0x88/0x138 arch/arm64/kvm/arm.c:299 kvm_destroy_vm virt/kvm/kvm_main.c:1317 [inline] kvm_put_kvm+0x778/0xbe0 virt/kvm/kvm_main.c:1354 kvm_vm_release+0x58/0x78 virt/kvm/kvm_main.c:1377 __fput+0x4ac/0x978 fs/file_table.c:468 ____fput+0x20/0x58 fs/file_table.c:496 task_work_run+0x1b8/0x250 kernel/task_work.c:233 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] __exit_to_user_mode_loop kernel/entry/common.c:44 [inline] exit_to_user_mode_loop+0x110/0x188 kernel/entry/common.c:75 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline] exit_to_user_mode_prepare_legacy include/linux/irq-entry-common.h:242 [inline] arm64_exit_to_user_mode arch/arm64/kernel/entry-common.c:81 [inline] el0_svc+0x17c/0x238 arch/arm64/kernel/entry-common.c:725 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 Code: 54000420 b2481c28 d344fd09 d378fc28 (38696a89) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 54000420 b.eq 0x84 // b.none 4: b2481c28 orr x8, x1, #0xff00000000000000 8: d344fd09 lsr x9, x8, #4 c: d378fc28 lsr x8, x1, #56 * 10: 38696a89 ldrb w9, [x20, x9] <-- trapping instruction --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup