loop1: detected capacity change from 0 to 128 VFS: Found a Xenix FS (block size = 1024) on device loop1 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 4722 at fs/inode.c:389 inc_nlink+0x128/0x150 fs/inode.c:389 Modules linked in: CPU: 0 PID: 4722 Comm: syz.1.48 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/02/2026 pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : inc_nlink+0x128/0x150 fs/inode.c:389 lr : inc_nlink+0x128/0x150 fs/inode.c:389 sp : ffff800021c57ba0 x29: ffff800021c57ba0 x28: 1fffe0001a252825 x27: dfff800000000000 x26: 1fffe0001eab780b x25: 1fffe0001eab780c x24: ffff800011f23fc8 x23: 1fffe0001eab7810 x22: dfff800000000000 x21: 0000000000000000 x20: ffff0000f55bc038 x19: ffff0000f55bc080 x18: 0000000000000000 x17: 0000000000000000 x16: ffff800011b3e320 x15: 0000000000000000 x14: 0000000000000001 x13: 1fffe00018108856 x12: 0000000000080000 x11: 0000000000006121 x10: ffff800022f8b000 x9 : ffff800008a1b7c8 x8 : 0000000000006122 x7 : 0000000000000000 x6 : 000000000000003f x5 : 0000000000000040 x4 : 000000000000000c x3 : 00000000000001c0 x2 : ffff0000e18b2468 x1 : 0000000000000000 x0 : 0000000000000000 Call trace: inc_nlink+0x128/0x150 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+0x314/0x4d8 fs/namei.c:4114 do_mkdirat+0x1b8/0x3ec fs/namei.c:4139 __do_sys_mkdirat fs/namei.c:4154 [inline] __se_sys_mkdirat fs/namei.c:4152 [inline] __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4152 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x128 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: 1520 hardirqs last enabled at (1519): [] kasan_quarantine_put+0xc4/0x200 mm/kasan/quarantine.c:242 hardirqs last disabled at (1520): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (1466): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (1464): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- sysv_new_block: new block -1275121488 is not in data zone