Unable to handle kernel paging request at virtual address dfff800000000001 KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] 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 [dfff800000000001] address between user and kernel address ranges Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 6885 Comm: syz.3.598 Not tainted 6.1.106-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : dtInsertEntry+0x9cc/0x1178 fs/jfs/jfs_dtree.c:3713 lr : dtInsertEntry+0x9c0/0x1178 fs/jfs/jfs_dtree.c:3713 sp : ffff80001e866de0 x29: ffff80001e866f40 x28: 0000000000000008 x27: 1fffe0001c28c628 x26: ffff0000e1463130 x25: ffff0000e1463140 x24: 0000000000000000 x23: 0000000000000000 x22: dfff800000000000 x21: ffff80001d6aa180 x20: ffff80001e866ee0 x19: 0000000000000008 x18: ffff80001e866e60 x17: ffff800018a97000 x16: ffff80000825ffa0 x15: 0000000000000002 x14: 0000000000008000 x13: ffff0000ca2a1bc0 x12: 0000000000040000 x11: 0000000000003cae x10: ffff800025e9a000 x9 : ffff8000099afb98 x8 : 0000000000000001 x7 : ffff8000099d444c x6 : 0000000000000000 x5 : 0000000000000000 x4 : ffff80001e867420 x3 : ffff8000099be480 x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: dtInsertEntry+0x9cc/0x1178 fs/jfs/jfs_dtree.c:3713 dtInsert+0x964/0x54f4 fs/jfs/jfs_dtree.c:891 jfs_create+0x698/0xa1c fs/jfs/namei.c:137 lookup_open fs/namei.c:3484 [inline] open_last_lookups fs/namei.c:3552 [inline] path_openat+0xeac/0x2548 fs/namei.c:3782 do_filp_open+0x1bc/0x3cc fs/namei.c:3812 do_sys_openat2+0x128/0x3e0 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+0x1f0/0x240 fs/open.c:1345 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 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: 97ad292d f94017e8 91002113 d343fe68 (38f66908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 97ad292d bl 0xfffffffffeb4a4b4 4: f94017e8 ldr x8, [sp, #40] 8: 91002113 add x19, x8, #0x8 c: d343fe68 lsr x8, x19, #3 * 10: 38f66908 ldrsb w8, [x8, x22] <-- trapping instruction