loop0: detected capacity change from 0 to 128 VFS: Found a Xenix FS (block size = 1024) on device loop0 unable to read i-node block ------------[ cut here ]------------ WARNING: CPU: 1 PID: 4912 at fs/inode.c:389 inc_nlink+0x128/0x154 fs/inode.c:389 Modules linked in: CPU: 1 PID: 4912 Comm: syz.0.144 Not tainted 6.1.132-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : inc_nlink+0x128/0x154 fs/inode.c:389 lr : inc_nlink+0x128/0x154 fs/inode.c:389 sp : ffff8000219c7b70 x29: ffff8000219c7b70 x28: dfff800000000000 x27: 0000000000000000 x26: 1fffe0001e00b125 x25: ffff80001271be08 x24: 00000000000001c0 x23: 1fffe0001c320810 x22: dfff800000000000 x21: 0000000000000007 x20: ffff0000e1904038 x19: ffff0000e1904080 x18: ffff8000219c73c0 x17: ffff800018c58000 x16: ffff800012327994 x15: 0000000000000002 x14: 00000000ffff8000 x13: 0000000014c4fd1b x12: 0000000000080000 x11: 0000000000005ffe x10: ffff800021eca000 x9 : ffff800008aad25c x8 : 0000000000005fff x7 : 0000000000000000 x6 : 000000000000003f x5 : 0000000000000040 x4 : 0000000000000001 x3 : 00000000000001c0 x2 : ffff0000df879a70 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: inc_nlink+0x128/0x154 fs/inode.c:389 inode_inc_link_count include/linux/fs.h:2576 [inline] sysv_mkdir+0x2c/0x138 fs/sysv/namei.c:119 vfs_mkdir+0x334/0x4e4 fs/namei.c:4106 do_mkdirat+0x220/0x510 fs/namei.c:4131 __do_sys_mkdirat fs/namei.c:4146 [inline] __se_sys_mkdirat fs/namei.c:4144 [inline] __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4144 __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+0x58/0x168 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: 183530 hardirqs last enabled at (183529): [] kasan_quarantine_put+0xdc/0x204 mm/kasan/quarantine.c:242 hardirqs last disabled at (183530): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (183486): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (183484): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- unable to read i-node block sysv_free_inode: unable to read inode block on device loop0