EXT4-fs warning (device loop1): ext4_dirblock_csum_set:427: inode #2: comm syz.1.294: No space for directory leaf checksum. Please run e2fsck -D. ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5780 at fs/ext4/ext4.h:2827 ext4_update_dx_flag+0x14c/0x1b0 fs/ext4/ext4.h:2827 Modules linked in: CPU: 0 PID: 5780 Comm: syz.1.294 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : ext4_update_dx_flag+0x14c/0x1b0 fs/ext4/ext4.h:2827 lr : ext4_update_dx_flag+0x14c/0x1b0 fs/ext4/ext4.h:2827 sp : ffff8000219376a0 x29: ffff8000219376b0 x28: ffff700004326ee0 x27: ffff0000e259bf50 x26: dfff800000000000 x25: 0000000005007864 x24: ffff0000e259bf48 x23: 0000000000000001 x22: 000000000008d200 x21: dfff800000000000 x20: 00000000ffeffffe x19: ffff0000e259bc80 x18: ffff800011abbcc0 x17: ffff8000181f8000 x16: ffff8000082d22e0 x15: ffff800017cd8fc0 x14: ffff0000d8a60a98 x13: 0000000005007864 x12: 0000000000080000 x11: 0000000000015c0f x10: ffff800021cab000 x9 : ffff800008dc2284 x8 : 0000000000015c10 x7 : 0000000005007864 x6 : 0000000000000043 x5 : ffff0000e259bf68 x4 : ffff0000e259bf58 x3 : ffff800008dc82c8 x2 : 0000000000000010 x1 : 0000000000000400 x0 : 0000000000000000 Call trace: ext4_update_dx_flag+0x14c/0x1b0 fs/ext4/ext4.h:2827 ext4_rename fs/ext4/namei.c:4010 [inline] ext4_rename2+0x1954/0x24a0 fs/ext4/namei.c:4258 vfs_rename+0x954/0xdcc fs/namei.c:4874 do_renameat2+0x738/0xa54 fs/namei.c:5027 __do_sys_renameat2 fs/namei.c:5060 [inline] __se_sys_renameat2 fs/namei.c:5057 [inline] __arm64_sys_renameat2+0xe0/0xfc fs/namei.c:5057 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x138 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 irq event stamp: 10156 hardirqs last enabled at (10155): [] seqcount_lockdep_reader_access include/linux/seqlock.h:104 [inline] hardirqs last enabled at (10155): [] ktime_get_coarse_real_ts64+0x114/0x244 kernel/time/timekeeping.c:2261 hardirqs last disabled at (10156): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (9990): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (9988): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- EXT4-fs error (device loop1): __ext4_get_inode_loc:4507: comm syz.1.294: Invalid inode table block 15278364334593457450 in block_group 0 EXT4-fs error (device loop1) in ext4_reserve_inode_write:5915: Corrupt filesystem EXT4-fs error (device loop1): ext4_rename:4030: inode #2: comm syz.1.294: mark_inode_dirty error