Unable to handle kernel paging request at virtual address dfff800000000104 KASAN: null-ptr-deref in range [0x0000000000000820-0x0000000000000827] 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 [dfff800000000104] address between user and kernel address ranges Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 5650 Comm: syz.2.147 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 02400005 (nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : diIAGRead fs/jfs/jfs_imap.c:2665 [inline] pc : diRead+0x138/0xa1c fs/jfs/jfs_imap.c:316 lr : diRead+0x130/0xa1c fs/jfs/jfs_imap.c:315 sp : ffff8000224e7510 x29: ffff8000224e7560 x28: dfff800000000000 x27: ffff8000224e7ab8 x26: ffff0000e22e0458 x25: 1ffff00002acebf4 x24: 0000000000000820 x23: ffff0000e22f1c88 x22: ffff0000e22f1ff0 x21: ffff0000e22e0470 x20: 0000000000000000 x19: 0000000000000004 x18: 0000000000000000 x17: ffff8000181f8000 x16: ffff800008042c8c x15: ffff800017cd8fc0 x14: ffff0000d9be2658 x13: ffff0000d9be2680 x12: 0000000000000001 x11: 1fffe0001c45e392 x10: 0000000000000001 x9 : 0000000000000000 x8 : 0000000000000104 x7 : 0000000000000000 x6 : 0000000000000000 x5 : ffff8000184b1d90 x4 : 0000000000000008 x3 : ffff8000082cc02c x2 : 0000000000000001 x1 : 0000000000000008 x0 : 0000000000000001 Call trace: diIAGRead fs/jfs/jfs_imap.c:2665 [inline] diRead+0x138/0xa1c fs/jfs/jfs_imap.c:316 jfs_iget+0x88/0x374 fs/jfs/inode.c:35 jfs_lookup+0x198/0x32c fs/jfs/namei.c:1467 lookup_open fs/namei.c:3460 [inline] open_last_lookups fs/namei.c:3550 [inline] path_openat+0xfa4/0x2680 fs/namei.c:3780 do_filp_open+0x174/0x344 fs/namei.c:3810 do_sys_openat2+0x128/0x3d8 fs/open.c:1318 do_sys_open fs/open.c:1334 [inline] __do_sys_openat fs/open.c:1350 [inline] __se_sys_openat fs/open.c:1345 [inline] __arm64_sys_openat+0x120/0x154 fs/open.c:1345 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Code: aa1703e0 97a9b8d3 91208298 d343ff08 (387c6908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: aa1703e0 mov x0, x23 4: 97a9b8d3 bl 0xfffffffffea6e350 8: 91208298 add x24, x20, #0x820 c: d343ff08 lsr x8, x24, #3 * 10: 387c6908 ldrb w8, [x8, x28] <-- trapping instruction