loop0: detected capacity change from 0 to 16
------------[ cut here ]------------
WARNING: CPU: 1 PID: 4460 at fs/inode.c:389 inc_nlink+0x128/0x150 fs/inode.c:389
Modules linked in:
CPU: 1 PID: 4460 Comm: syz.0.17 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 : ffff800021507a40
x29: ffff800021507a40 x28: dfff800000000000 x27: ffff7000042a0f54
x26: ffff0000d0b48000 x25: ffff800021507aa0 x24: 0000000000000000
x23: 1fffe0001d4d2009 x22: dfff800000000000 x21: 0000000000000007
x20: ffff0000ea690000 x19: ffff0000ea690048 x18: 1fffe00033e8417e
x17: ffff8000089e7044 x16: ffff8000082f2a04 x15: 000000000004ffff
x14: 0000000000000001 x13: 1fffe0001d4d20cc x12: 0000000000000000
x11: ff00800008a1b7c8 x10: 0000000000000000 x9 : ffff800008a1b7c8
x8 : ffff0000d2141c00 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000020 x4 : 0000000000000000 x3 : ffff8000082f2b18
x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 inc_nlink+0x128/0x150 fs/inode.c:389
 v9fs_vfs_mkdir_dotl+0x538/0x694 fs/9p/vfs_inode_dotl.c:445
 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: 3356
hardirqs last  enabled at (3355): [<ffff8000083cceb0>] seqcount_lockdep_reader_access include/linux/seqlock.h:104 [inline]
hardirqs last  enabled at (3355): [<ffff8000083cceb0>] ktime_get_coarse_real_ts64+0x114/0x244 kernel/time/timekeeping.c:2261
hardirqs last disabled at (3356): [<ffff800011b3a55c>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last  enabled at (3050): [<ffff8000081ae3b4>] softirq_handle_end kernel/softirq.c:439 [inline]
softirqs last  enabled at (3050): [<ffff8000081ae3b4>] handle_softirqs+0xb1c/0xc90 kernel/softirq.c:624
softirqs last disabled at (3013): [<ffff800008020e6c>] __do_softirq+0x14/0x20 kernel/softirq.c:630
---[ end trace 0000000000000000 ]---