------------[ cut here ]------------
WARNING: CPU: 0 PID: 6567 at fs/inode.c:389 inc_nlink+0x130/0x168 fs/inode.c:389
Modules linked in:
CPU: 0 PID: 6567 Comm: syz.5.523 Not tainted 5.15.186-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : inc_nlink+0x130/0x168 fs/inode.c:389
lr : inc_nlink+0x130/0x168 fs/inode.c:389
sp : ffff80001fab7a60
x29: ffff80001fab7a60 x28: dfff800000000000 x27: ffff700003f56f58
x26: 0000000000000000 x25: ffff0000e6db1700 x24: 0000000000000000
x23: 1fffe0001bdc50fd x22: dfff800000000000 x21: 0000000000000007
x20: ffff0000dee287a0 x19: ffff0000dee287e8 x18: 0000000000000000
x17: 0000000000000002 x16: ffff8000082d6448 x15: 0000000000008000
x14: 0000000000ff0100 x13: 1ffff0000282c06b x12: 0000000000080000
x11: 0000000000009758 x10: ffff80002cd1c000 x9 : ffff800008951014
x8 : 0000000000009759 x7 : ffff800008946ea4 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000082d655c
x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 inc_nlink+0x130/0x168 fs/inode.c:389
 v9fs_vfs_mkdir_dotl+0x410/0x4e8 fs/9p/vfs_inode_dotl.c:458
 vfs_mkdir+0x314/0x4d4 fs/namei.c:4065
 do_mkdirat+0x1bc/0x508 fs/namei.c:4090
 __do_sys_mkdirat fs/namei.c:4105 [inline]
 __se_sys_mkdirat fs/namei.c:4103 [inline]
 __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4103
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x78/0x1e0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
irq event stamp: 1252
hardirqs last  enabled at (1251): [<ffff8000083896b8>] seqcount_lockdep_reader_access+0x1fc/0x2c4 include/linux/seqlock.h:105
hardirqs last disabled at (1252): [<ffff8000111adf74>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396
softirqs last  enabled at (1036): [<ffff80000819e9e8>] softirq_handle_end kernel/softirq.c:419 [inline]
softirqs last  enabled at (1036): [<ffff80000819e9e8>] handle_softirqs+0xa4c/0xbf0 kernel/softirq.c:604
softirqs last disabled at (1009): [<ffff80000819efec>] __do_softirq kernel/softirq.c:610 [inline]
softirqs last disabled at (1009): [<ffff80000819efec>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (1009): [<ffff80000819efec>] invoke_softirq kernel/softirq.c:457 [inline]
softirqs last disabled at (1009): [<ffff80000819efec>] __irq_exit_rcu+0x240/0x440 kernel/softirq.c:659
---[ end trace 9c73b5c5cab56ca7 ]---