Unable to handle ker Unable to handle kernel paging request at virtual address dfff800000000001 KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] 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 [dfff800000000001] address between user and kernel address ranges Internal error: Oops: 0000000096000005 [#1] SMP Modules linked in: CPU: 0 UID: 0 PID: 6556 Comm: syz-executor Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : ocfs2_find_dir_space_id fs/ocfs2/dir.c:3432 [inline] pc : ocfs2_prepare_dir_for_insert+0x27a4/0x4664 fs/ocfs2/dir.c:4296 lr : ocfs2_find_dir_space_id fs/ocfs2/dir.c:3395 [inline] lr : ocfs2_prepare_dir_for_insert+0x25ec/0x4664 fs/ocfs2/dir.c:4296 sp : ffff8000a3b06ee0 x29: ffff8000a3b075c0 x28: ffff000108e580c8 x27: ffff8000a3b07620 x26: dfff800000000000 x25: ffff0000d99bdc40 x24: 0000000000000010 x23: ffff0000f44b8878 x22: ffff0000da374000 x21: ffff000108e58000 x20: 0000000000000009 x19: 0000000000000000 x18: 00000000ffffffff x17: ffff800093303000 x16: ffff80008ad5f288 x15: 0000000000000001 x14: 1fffe0001e897119 x13: 0000000000000000 x12: 0000000000000000 x11: ffff60001e89711a x10: 0000000000ff0100 x9 : 0000000000000000 x8 : 0000000000000001 x7 : 608b7c562adf3b03 x6 : 23ec6d672c196c9a x5 : ffff8000a3b06e50 x4 : ffff0000d51c1524 x3 : ffff800082133da0 x2 : 0000000000000000 x1 : 0000000000000008 x0 : 0000000000000008 Call trace: ocfs2_find_dir_space_id fs/ocfs2/dir.c:3432 [inline] (P) ocfs2_prepare_dir_for_insert+0x27a4/0x4664 fs/ocfs2/dir.c:4296 (P) __ocfs2_prepare_orphan_dir+0x14c/0x2d0 fs/ocfs2/namei.c:2179 ocfs2_prepare_orphan_dir+0xf4/0x374 fs/ocfs2/namei.c:2224 ocfs2_unlink+0x7f0/0x16bc fs/ocfs2/namei.c:962 vfs_rmdir+0x328/0x464 fs/namei.c:4548 do_rmdir+0x214/0x4c4 fs/namei.c:4603 __do_sys_unlinkat fs/namei.c:4777 [inline] __se_sys_unlinkat fs/namei.c:4771 [inline] __arm64_sys_unlinkat+0xc8/0xf8 fs/namei.c:4771 __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:746 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:765 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 Code: f9406ff7 91002260 91002674 d343fc08 (38fa6908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: f9406ff7 ldr x23, [sp, #216] 4: 91002260 add x0, x19, #0x8 8: 91002674 add x20, x19, #0x9 c: d343fc08 lsr x8, x0, #3 * 10: 38fa6908 ldrsb w8, [x8, x26] <-- trapping instruction