------------[ cut here ]------------
WARNING: CPU: 1 PID: 4220 at mm/page_alloc.c:5521 __alloc_pages+0x32c/0x730 mm/page_alloc.c:5521
Modules linked in:
CPU: 1 PID: 4220 Comm: syz-executor388 Not tainted 6.1.81-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
pstate: 20400005 (nzCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __alloc_pages+0x32c/0x730 mm/page_alloc.c:5521
lr : __alloc_pages+0xc8/0x730 mm/page_alloc.c:5515
sp : ffff80001dc37760
x29: ffff80001dc37850 x28: ffff80001dc37780 x27: dfff800000000000
x26: ffff700003b86ef0 x25: 0000000000000000 x24: ffff80001dc377a0
x23: 0000000000000000 x22: 0000000000040d40 x21: 1ffff00003b86ef4
x20: ffff80001dc377c0 x19: 0000000000000014 x18: 1fffe0003686fd76
x17: ffff80001582d000 x16: ffff800012098000 x15: ffff800008ad26c0
x14: ffff800008acf430 x13: ffff800008062674 x12: 0000000000000005
x11: 1ffff00003b86ef8 x10: 0000000000000000 x9 : 0000000000000001
x8 : ffff800018157000 x7 : 0000000000000000 x6 : ffff800008062674
x5 : ffff0000d371fbc8 x4 : 0000000000000000 x3 : 0000000000000020
x2 : 0000000000000008 x1 : 0000000000000000 x0 : ffff80001dc377c0
Call trace:
 __alloc_pages+0x32c/0x730 mm/page_alloc.c:5521
 __alloc_pages_node include/linux/gfp.h:237 [inline]
 alloc_pages_node include/linux/gfp.h:260 [inline]
 __kmalloc_large_node+0xbc/0x21c mm/slab_common.c:1096
 __do_kmalloc_node mm/slab_common.c:943 [inline]
 __kmalloc+0x130/0x1c4 mm/slab_common.c:968
 kmalloc include/linux/slab.h:561 [inline]
 kzalloc include/linux/slab.h:692 [inline]
 __v9fs_get_acl+0x58/0x150 fs/9p/acl.c:28
 v9fs_get_acl+0xb8/0x2c8 fs/9p/acl.c:63
 v9fs_mount+0x77c/0xa5c fs/9p/vfs_super.c:184
 legacy_get_tree+0xd4/0x16c fs/fs_context.c:632
 vfs_get_tree+0x90/0x274 fs/super.c:1562
 do_new_mount+0x278/0x8fc fs/namespace.c:3051
 path_mount+0x590/0xe5c fs/namespace.c:3381
 do_mount fs/namespace.c:3394 [inline]
 __do_sys_mount fs/namespace.c:3602 [inline]
 __se_sys_mount fs/namespace.c:3579 [inline]
 __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3579
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206
 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: 15994
hardirqs last  enabled at (15993): [<ffff800008977c70>] kasan_quarantine_put+0xdc/0x204 mm/kasan/quarantine.c:242
hardirqs last disabled at (15994): [<ffff800012145704>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last  enabled at (15784): [<ffff8000087fd064>] spin_unlock_bh include/linux/spinlock.h:396 [inline]
softirqs last  enabled at (15784): [<ffff8000087fd064>] bdi_register_va+0x508/0x880 mm/backing-dev.c:897
softirqs last disabled at (15782): [<ffff8000087fce4c>] spin_lock_bh include/linux/spinlock.h:356 [inline]
softirqs last disabled at (15782): [<ffff8000087fce4c>] bdi_register_va+0x2f0/0x880 mm/backing-dev.c:887
---[ end trace 0000000000000000 ]---