loop4: 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: 8860 Comm: syz.4.439 Not tainted 6.10.0-rc7-syzkaller-gc912bf709078 #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 : ffff80009a066e00 x29: ffff80009a066f60 x28: 0000000000000008 x27: 1fffe0001bb22628 x26: ffff0000dd913130 x25: ffff0000dd913140 x24: 0000000000000001 x23: 0000000000000000 x22: dfff800000000000 x21: ffff80009a067440 x20: ffff80009a066f00 x19: 0000000000000008 x18: 1fffe000367a3dde x17: ffff80008f2dd000 x16: ffff800080282a4c x15: 0000000000000001 x14: 1fffe0001bb225d3 x13: 0000000000000000 x12: 0000000000000000 x11: ffff60001bb225d4 x10: 0000000000ff0100 x9 : 0000000000000000 x8 : 0000000000000001 x7 : ffff800081a7feac x6 : 0000000000000000 x5 : 0000000000000000 x4 : ffff80009a067440 x3 : ffff800081a69ab8 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+0x698/0xa04 fs/jfs/namei.c:137 lookup_open fs/namei.c:3552 [inline] open_last_lookups fs/namei.c:3621 [inline] path_openat+0xfb8/0x2ae8 fs/namei.c:3857 do_filp_open+0x1bc/0x3cc fs/namei.c:3887 do_sys_openat2+0x124/0x1b8 fs/open.c:1413 do_sys_open fs/open.c:1428 [inline] __do_sys_openat fs/open.c:1444 [inline] __se_sys_openat fs/open.c:1439 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1439 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:131 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:150 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 Code: 97abc307 f94017e8 91002113 d343fe68 (38f66908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 97abc307 bl 0xfffffffffeaf0c1c 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