Unable to handle kernel NULL pointer dereference at virtual address 0000000000000030 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 user pgtable: 4k pages, 48-bit VAs, pgdp=000000015098b000 [0000000000000030] pgd=0800000171f12003, p4d=0800000171f12003, pud=0800000153573003, pmd=0000000000000000 Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 18210 Comm: syz-executor.3 Not tainted 6.0.0-rc7-syzkaller-18095-gbbed346d5a96 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/30/2022 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __nilfs_btree_get_block+0x54/0x33c fs/nilfs2/btree.c:475 lr : __nilfs_btree_get_block+0x44/0x33c fs/nilfs2/btree.c:473 sp : ffff800021a73690 x29: ffff800021a736b0 x28: 0000000000000000 x27: 0000000000000001 x26: ffff000110388e80 x25: 0000000000000000 x24: ffff000111adc758 x23: 0000000000000002 x22: 0000000000000000 x21: ffff000111adc758 x20: 00000000000003b1 x19: ffff000110388e80 x18: 00000000000000c0 x17: ffff80000dd0b198 x16: ffff80000db49158 x15: ffff0001083bb500 x14: ffff80000dd0b198 x13: ffff80000db49158 x12: 0000000000040000 x11: 000000000003a7c8 x10: ffff80001d5bd000 x9 : ffff800008f5dc48 x8 : 0000000000000000 x7 : 0000000000000000 x6 : 000000000000003f x5 : ffff800021a73690 x4 : ffff800021a736a0 x3 : 0000000000000000 x2 : ffff000110388e80 x1 : 00000000000003b1 x0 : ffff000111adc758 Call trace: __nilfs_btree_get_block+0x54/0x33c fs/nilfs2/btree.c:480 nilfs_btree_do_lookup+0x268/0x55c fs/nilfs2/btree.c:569 nilfs_btree_lookup+0x1a0/0x1d4 fs/nilfs2/btree.c:686 nilfs_bmap_lookup_at_level+0x68/0x168 fs/nilfs2/bmap.c:69 nilfs_bmap_lookup fs/nilfs2/bmap.h:170 [inline] nilfs_mdt_submit_block+0x164/0x4bc fs/nilfs2/mdt.c:142 nilfs_mdt_read_block+0x58/0x22c fs/nilfs2/mdt.c:176 nilfs_mdt_get_block+0x5c/0xcc fs/nilfs2/mdt.c:251 nilfs_palloc_get_block+0xb4/0x18c fs/nilfs2/alloc.c:216 nilfs_palloc_get_entry_block+0x90/0xa4 fs/nilfs2/alloc.c:318 nilfs_ifile_get_inode_block+0x7c/0xf8 fs/nilfs2/ifile.c:143 __nilfs_read_inode fs/nilfs2/inode.c:477 [inline] nilfs_iget+0xac/0x33c fs/nilfs2/inode.c:603 nilfs_get_root_dentry+0x38/0x180 fs/nilfs2/super.c:904 nilfs_fill_super+0x1e4/0x2f8 fs/nilfs2/super.c:1078 nilfs_mount+0x370/0x52c fs/nilfs2/super.c:1317 legacy_get_tree+0x30/0x74 fs/fs_context.c:610 vfs_get_tree+0x40/0x140 fs/super.c:1530 do_new_mount+0x1dc/0x4e4 fs/namespace.c:3040 path_mount+0x358/0x914 fs/namespace.c:3370 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount fs/namespace.c:3568 [inline] __arm64_sys_mount+0x2c4/0x3c4 fs/namespace.c:3568 __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 arch/arm64/kernel/entry.S:581 Code: f9408ea8 910043e4 910003e5 aa1403e1 (f9401917) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: f9408ea8 ldr x8, [x21, #280] 4: 910043e4 add x4, sp, #0x10 8: 910003e5 mov x5, sp c: aa1403e1 mov x1, x20 * 10: f9401917 ldr x23, [x8, #48] <-- trapping instruction