loop0: detected capacity change from 0 to 65535 Unable to handle kernel NULL pointer dereference at virtual address 0000000000000008 Mem abort info: ESR = 0x0000000096000046 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 = 0x00000046 CM = 0, WnR = 1 user pgtable: 4k pages, 48-bit VAs, pgdp=000000010b4bb000 [0000000000000008] pgd=080000010b405003, p4d=080000010b405003, pud=0800000107ba1003, pmd=0000000000000000 Internal error: Oops: 0000000096000046 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 3064 Comm: syz-executor267 Not tainted 6.0.0-rc6-syzkaller-17742-gc194837ebb57 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : dtInsertEntry+0x470/0x660 fs/jfs/jfs_dtree.c:3708 lr : dtInsertEntry+0x468/0x660 fs/jfs/jfs_dtree.c:3708 sp : ffff80000ff7b820 x29: ffff80000ff7b8a0 x28: ffff0000ca10aed8 x27: ffff0000ca10aef8 x26: 0000000000000000 x25: 000000000000000d x24: 0000000000000001 x23: 0000000000000000 x22: 0000000000000073 x21: 0000000000000006 x20: ffff80000ff7b908 x19: 0000000000000079 x18: 00000000000000c0 x17: ffff80000dd0b198 x16: 0000000000000000 x15: 0000000000000000 x14: 0000000000000000 x13: 0000000000008000 x12: ffff80000d5335c0 x11: ff80800008d4c768 x10: 0000000000000000 x9 : 0000000000000000 x8 : 00000000000000ff x7 : ffff800008d5cfac x6 : 0000000000000000 x5 : 0000000000000000 x4 : ffff80000ff7b900 x3 : ffff80000ff7b908 x2 : ffff80000ff7b9b0 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: dtInsertEntry+0x470/0x660 dtInsert+0x21c/0x378 fs/jfs/jfs_dtree.c:886 jfs_create+0x390/0x488 fs/jfs/namei.c:137 lookup_open fs/namei.c:3413 [inline] open_last_lookups fs/namei.c:3481 [inline] path_openat+0x804/0x11c4 fs/namei.c:3688 do_filp_open+0xdc/0x1b8 fs/namei.c:3718 do_sys_openat2+0xb8/0x22c fs/open.c:1311 do_sys_open fs/open.c:1327 [inline] __do_sys_openat fs/open.c:1343 [inline] __se_sys_openat fs/open.c:1338 [inline] __arm64_sys_openat+0xb0/0xe0 fs/open.c:1338 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall arch/arm64/kernel/syscall.c:52 [inline] el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x164 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:636 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:654 el0t_64_sync+0x18c/0x190 Code: 370800d3 97d54f56 f9400fe9 52801fe8 (39002128) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 370800d3 tbnz w19, #1, 0x18 4: 97d54f56 bl 0xffffffffff553d5c 8: f9400fe9 ldr x9, [sp, #24] c: 52801fe8 mov w8, #0xff // #255 * 10: 39002128 strb w8, [x9, #8] <-- trapping instruction