Unable to handle kernel NULL pointer dereference at virtual address 0000000000000180 Mem abort info: ESR = 0x0000000096000006 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x06: level 2 translation fault Data abort info: ISV = 0, ISS = 0x00000006 CM = 0, WnR = 0 user pgtable: 4k pages, 48-bit VAs, pgdp=000000016cae2000 [0000000000000180] pgd=080000016d89e003, p4d=080000016d89e003, pud=080000016dad4003, pmd=0000000000000000 Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 26800 Comm: syz-executor.4 Not tainted 6.1.0-rc4-syzkaller-31872-g1621b6eaebf7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/30/2022 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : hlist_unhashed include/linux/list.h:854 [inline] pc : get_super+0x4c/0x144 fs/super.c:790 lr : get_super+0x7c/0x144 fs/super.c:789 sp : ffff80001603b9e0 x29: ffff80001603b9e0 x28: ffff00011e3f98a0 x27: 00000000000e001f x26: 0000000000000002 x25: ffff80001603bb28 x24: ffff0000c106cef8 x23: ffff80000d433500 x22: 0000000000000001 x21: ffff80000d4334c0 x20: 0000000000000000 x19: ffff0000c586c980 x18: 0000000000000000 x17: 0000000000000000 x16: ffff80000db1a158 x15: ffff00011e918000 x14: 0000000000000008 x13: 00000000ffffffff x12: ffff00011e918000 x11: ff808000085bc198 x10: 0000000000000000 x9 : ffff8000085bc198 x8 : ffff00011e918000 x7 : ffff8000085bc14c x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: get_super+0x4c/0x144 __invalidate_device+0x28/0xb8 block/bdev.c:1003 disk_force_media_change+0xf0/0x198 block/disk-events.c:310 loop_configure+0x3f4/0x728 drivers/block/loop.c:1070 lo_ioctl+0x954/0x1024 blkdev_ioctl+0x24c/0x6d8 block/ioctl.c:614 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __arm64_sys_ioctl+0xd0/0x140 fs/ioctl.c:856 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall arch/arm64/kernel/syscall.c:52 [inline] el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x164 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584 Code: eb17029f 54000620 f00273b5 911302b5 (f940c288) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: eb17029f cmp x20, x23 4: 54000620 b.eq 0xc8 // b.none 8: f00273b5 adrp x21, 0x4e77000 c: 911302b5 add x21, x21, #0x4c0 * 10: f940c288 ldr x8, [x20, #384] <-- trapping instruction