------------[ cut here ]------------
WARNING: CPU: 0 PID: 9970 at mm/page_alloc.c:5590 __alloc_pages+0xd0/0x53c mm/page_alloc.c:5590
Modules linked in:
CPU: 0 PID: 9970 Comm: syz.3.1280 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
pstate: 22400005 (nzCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : __alloc_pages+0xd0/0x53c mm/page_alloc.c:5590
lr : __alloc_pages+0xac/0x53c mm/page_alloc.c:5584
sp : ffff800021ab77c0
x29: ffff800021ab7890 x28: 1ffff00004356f40 x27: ffff800021ab77e0
x26: ffff0000e270b4d8 x25: dfff800000000000 x24: ffff700004356efc
x23: ffff0000e270b498 x22: 0000000000000000 x21: 0000000000040d40
x20: 0000000000000000 x19: 0000000000000023 x18: ffff800011a5bd40
x17: 1fffe00033ee7b7e x16: ffff8000082d3a08 x15: 0000000040000000
x14: 00000000ffff8000 x13: 00000000f5e5ec5b x12: 0000000000000005
x11: 1ffff00004356f00 x10: 0000000000000000 x9 : 0000000000000001
x8 : ffff800017a15000 x7 : 0000000000000000 x6 : 000000000000003f
x5 : 0000000000000040 x4 : 0000000000000000 x3 : 0000000000000020
x2 : 0000000000000008 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 __alloc_pages+0xd0/0x53c mm/page_alloc.c:5590
 __alloc_pages_node include/linux/gfp.h:237 [inline]
 alloc_pages_node include/linux/gfp.h:260 [inline]
 __kmalloc_large_node+0xa8/0x1e0 mm/slab_common.c:1077
 __do_kmalloc_node mm/slab_common.c:924 [inline]
 __kmalloc+0x140/0x178 mm/slab_common.c:949
 kmalloc include/linux/slab.h:568 [inline]
 kzalloc include/linux/slab.h:699 [inline]
 __v9fs_get_acl+0x58/0x14c fs/9p/acl.c:28
 v9fs_get_acl+0xb8/0x2c8 fs/9p/acl.c:63
 v9fs_mount+0x6f8/0x9d4 fs/9p/vfs_super.c:184
 legacy_get_tree+0xd4/0x16c fs/fs_context.c:632
 vfs_get_tree+0x90/0x274 fs/super.c:1573
 do_new_mount+0x228/0x810 fs/namespace.c:3078
 path_mount+0x5b4/0xe78 fs/namespace.c:3408
 do_mount fs/namespace.c:3421 [inline]
 __do_sys_mount fs/namespace.c:3629 [inline]
 __se_sys_mount fs/namespace.c:3606 [inline]
 __arm64_sys_mount+0x49c/0x584 fs/namespace.c:3606
 __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+0x58/0x138 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: 896
hardirqs last  enabled at (895): [<ffff8000088d9938>] kasan_quarantine_put+0xc4/0x204 mm/kasan/quarantine.c:242
hardirqs last disabled at (896): [<ffff8000118fa220>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last  enabled at (690): [<ffff80000877aa90>] spin_unlock_bh include/linux/spinlock.h:396 [inline]
softirqs last  enabled at (690): [<ffff80000877aa90>] bdi_register_va+0x4fc/0x81c mm/backing-dev.c:897
softirqs last disabled at (688): [<ffff80000877a87c>] spin_lock_bh include/linux/spinlock.h:356 [inline]
softirqs last disabled at (688): [<ffff80000877a87c>] bdi_register_va+0x2e8/0x81c mm/backing-dev.c:887
---[ end trace 0000000000000000 ]---