loop3: detected capacity change from 0 to 2048 UDF-fs: INFO Mounting volume 'LiuxUDF', timestamp 2022/11/22 14:59 (1000) Unable to handle kernel paging request at virtual address dfff800000000004 KASAN: null-ptr-deref in range [0x0000000000000020-0x0000000000000027] 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 [dfff800000000004] address between user and kernel address ranges Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 12430 Comm: syz-executor.3 Not tainted 6.1.90-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : crc_itu_t+0x5c/0x108 lib/crc-itu-t.c:60 lr : crc_itu_t+0x38/0x108 lib/crc-itu-t.c:59 sp : ffff80001e8c7540 x29: ffff80001e8c7550 x28: ffff0000f5ed8d98 x27: 0000000000000114 x26: ffff80001e8c7708 x25: 1ffff00003d18ee1 x24: ffff800012786cc0 x23: 0000000000000095 x22: dfff800000000000 x21: 0000000000000026 x20: 0000000000000026 x19: 000000002d1d0c9c x18: 0000000000000000 x17: 6161616161616161 x16: ffff8000120a7780 x15: ffff800008a78f68 x14: ffff800008a78a10 x13: ffff800008a7785c x12: 0000000000040000 x11: 0000000000ff0100 x10: 0000000000000002 x9 : 0000000000000006 x8 : 0000000000000004 x7 : 0000000000000000 x6 : ffff800008062674 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff8000099307a0 x2 : 0000000000000096 x1 : 0000000000000096 x0 : 0000000000000000 Call trace: crc_itu_t+0x5c/0x108 lib/crc-itu-t.c:60 udf_write_fi+0x4f0/0x920 fs/udf/namei.c:113 udf_delete_entry fs/udf/namei.c:577 [inline] udf_rename+0x90c/0x10b0 fs/udf/namei.c:1173 vfs_rename+0xac8/0xe04 fs/namei.c:4876 do_renameat2+0x9ec/0xe64 fs/namei.c:5029 __do_sys_renameat2 fs/namei.c:5062 [inline] __se_sys_renameat2 fs/namei.c:5059 [inline] __arm64_sys_renameat2+0xe0/0xfc fs/namei.c:5059 __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:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 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: 9003e518 91330318 d343fea8 12000aa9 (38f66908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 9003e518 adrp x24, 0x7ca0000 4: 91330318 add x24, x24, #0xcc0 8: d343fea8 lsr x8, x21, #3 c: 12000aa9 and w9, w21, #0x7 * 10: 38f66908 ldrsb w8, [x8, x22] <-- trapping instruction