Unable to handle kernel paging request at virtual address dfff800000000104 KASAN: null-ptr-deref in range [0x0000000000000820-0x0000000000000827] Mem abort info: ESR = 0x0000000096000005 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x05: level 1 translation fault Data abort info: ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000 CM = 0, WnR = 0, TnD = 0, TagAccess = 0 GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [dfff800000000104] address between user and kernel address ranges Internal error: Oops: 0000000096000005 [#1] SMP Modules linked in: CPU: 1 UID: 0 PID: 7047 Comm: syz.1.60 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 03400005 (nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : diIAGRead fs/jfs/jfs_imap.c:2665 [inline] pc : diRead+0x13c/0xa20 fs/jfs/jfs_imap.c:316 lr : diRead+0x118/0xa20 fs/jfs/jfs_imap.c:314 sp : ffff8000a0367510 x29: ffff8000a0367560 x28: dfff800000000000 x27: ffff0000d6582eb0 x26: ffff0000f6eab270 x25: 1ffff00011fcd6f4 x24: 0000000000000820 x23: ffff0000f6ea9c70 x22: ffff0000f6ea9fd8 x21: ffff0000f6eab288 x20: 0000000000000000 x19: 0000000000000004 x18: 00000000ffffffff x17: ffff800093605000 x16: ffff80008b065bd0 x15: 0000000000000001 x14: 1fffe0001edd538f x13: 0000000000000000 x12: 0000000000000000 x11: ffff60001edd5390 x10: 0000000000000001 x9 : 0000000000000000 x8 : 0000000000000104 x7 : ffff800080493890 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff8000805269e4 x2 : 0000000000000000 x1 : 0000000000000008 x0 : 0000000000000001 Call trace: diIAGRead fs/jfs/jfs_imap.c:2665 [inline] (P) diRead+0x13c/0xa20 fs/jfs/jfs_imap.c:316 (P) jfs_iget+0x80/0x388 fs/jfs/inode.c:35 jfs_lookup+0x198/0x32c fs/jfs/namei.c:1469 lookup_open fs/namei.c:3686 [inline] open_last_lookups fs/namei.c:3807 [inline] path_openat+0xcc0/0x2c40 fs/namei.c:4043 do_filp_open+0x18c/0x36c fs/namei.c:4073 do_sys_openat2+0x11c/0x1b4 fs/open.c:1435 do_sys_open fs/open.c:1450 [inline] __do_sys_openat fs/open.c:1466 [inline] __se_sys_openat fs/open.c:1461 [inline] __arm64_sys_openat+0x120/0x158 fs/open.c:1461 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:744 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:763 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 Code: 97c28d6e f9400314 91208298 d343ff08 (387c6908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 97c28d6e bl 0xffffffffff0a35b8 4: f9400314 ldr x20, [x24] 8: 91208298 add x24, x20, #0x820 c: d343ff08 lsr x8, x24, #3 * 10: 387c6908 ldrb w8, [x8, x28] <-- trapping instruction