------------[ cut here ]------------
WARNING: CPU: 0 PID: 4552 at mm/page_alloc.c:5633 __alloc_pages+0xd0/0x53c mm/page_alloc.c:5633
Modules linked in:
CPU: 0 PID: 4552 Comm: syz.2.41 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026
pstate: 22400005 (nzCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : __alloc_pages+0xd0/0x53c mm/page_alloc.c:5633
lr : __alloc_pages+0xac/0x53c mm/page_alloc.c:5627
sp : ffff8000214d77c0
x29: ffff8000214d7890 x28: dfff800000000000 x27: ffff8000214d77e0
x26: ffff0000e1cf8040 x25: dfff800000000000 x24: ffff70000429aefc
x23: ffff0000e1cf8000 x22: 0000000000000000 x21: 0000000000040d40
x20: 0000000000000000 x19: 000000000000002c x18: ffff800011b9bf60
x17: 1fffe00033ea637e x16: ffff8000082d92bc x15: ffff800008a323e0
x14: 0000000000000005 x13: 1ffff0000429af00 x12: 0000000000000000
x11: 0000000000000000 x10: ffff70000429af05 x9 : 0000000000000001
x8 : ffff800017bea000 x7 : 0000000000000000 x6 : ffff800008059a4c
x5 : ffff0000f457f180 x4 : 0000000000000000 x3 : 0000000000000020
x2 : 0000000000000008 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 __alloc_pages+0xd0/0x53c mm/page_alloc.c:5633
 __alloc_pages_node include/linux/gfp.h:237 [inline]
 alloc_pages_node include/linux/gfp.h:260 [inline]
 __kmalloc_large_node+0xa8/0x1dc 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+0xa4/0x2c0 fs/9p/acl.c:62
 v9fs_mount+0x6fc/0x9d0 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+0x5bc/0xe80 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/0x59c fs/namespace.c:3606
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x130 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: 1816
hardirqs last  enabled at (1815): [<ffff8000088e81cc>] kasan_quarantine_put+0xc4/0x200 mm/kasan/quarantine.c:242
hardirqs last disabled at (1816): [<ffff800011a33e5c>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last  enabled at (1630): [<ffff800008787c7c>] spin_unlock_bh include/linux/spinlock.h:396 [inline]
softirqs last  enabled at (1630): [<ffff800008787c7c>] bdi_register_va+0x510/0x828 mm/backing-dev.c:897
softirqs last disabled at (1628): [<ffff800008787a68>] spin_lock_bh include/linux/spinlock.h:356 [inline]
softirqs last disabled at (1628): [<ffff800008787a68>] bdi_register_va+0x2fc/0x828 mm/backing-dev.c:887
---[ end trace 0000000000000000 ]---
NILFS (loop2): unrecognized mount option "00000000000000000000004ÿÿÿÿÿÿÿÿ"