loop0: detected capacity change from 0 to 32768 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] PREEMPT SMP Modules linked in: CPU: 0 PID: 6551 Comm: syz-executor.0 Not tainted 6.7.0-rc8-syzkaller-00101-g0802e17d9aca #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : dtInsertEntry+0x9cc/0x1178 fs/jfs/jfs_dtree.c:3708 lr : dtInsertEntry+0x9c0/0x1178 fs/jfs/jfs_dtree.c:3708 sp : ffff800096f76e00 x29: ffff800096f76f60 x28: 000000000000000d x27: 1fffe0001c253628 x26: ffff0000e129b130 x25: ffff0000e129b140 x24: 0000000000000002 x23: 0000000000000000 x22: dfff800000000000 x21: ffff80009663a180 x20: ffff800096f76f00 x19: 0000000000000008 x18: ffff800096f77020 x17: 0000000000017a4b x16: ffff80008026ec88 x15: 0000000000000001 x14: 0000000000000000 x13: 0000000000008000 x12: ffff800096f76ee0 x11: ffff0000e129b130 x10: 0000000000ff0100 x9 : 0000000000000000 x8 : 0000000000000001 x7 : ffff800081a90284 x6 : 0000000000000000 x5 : 0000000000000000 x4 : ffff800096f77440 x3 : ffff800096f77400 x2 : ffff800096f77580 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: dtInsertEntry+0x9cc/0x1178 fs/jfs/jfs_dtree.c:3708 dtInsert+0x964/0x54f4 fs/jfs/jfs_dtree.c:886 jfs_create+0x698/0xa04 fs/jfs/namei.c:137 lookup_open fs/namei.c:3477 [inline] open_last_lookups fs/namei.c:3546 [inline] path_openat+0xfb4/0x2888 fs/namei.c:3776 do_filp_open+0x1bc/0x3cc fs/namei.c:3809 do_sys_openat2+0x124/0x1b8 fs/open.c:1437 do_sys_open fs/open.c:1452 [inline] __do_sys_openat fs/open.c:1468 [inline] __se_sys_openat fs/open.c:1463 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1463 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 Code: 97aac7ab f94017e8 91002113 d343fe68 (38f66908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 97aac7ab bl 0xfffffffffeab1eac 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