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WARNING: CPU: 0 PID: 8601 at mm/page_alloc.c:4935 __alloc_frozen_pages_noprof+0xd0/0x318 mm/page_alloc.c:4935
Modules linked in:
CPU: 0 UID: 0 PID: 8601 Comm: syz.1.424 Not tainted 6.16.0-rc5-syzkaller-gec4801305969 #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
pstate: 20400005 (nzCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __alloc_frozen_pages_noprof+0xd0/0x318 mm/page_alloc.c:4935
lr : __alloc_frozen_pages_noprof+0xac/0x318 mm/page_alloc.c:4929
sp : ffff8000a4cc76c0
x29: ffff8000a4cc7790 x28: 1fffe0001eb5c900 x27: ffff8000a4cc7a00
x26: 1fffe0001abed042 x25: dfff800000000000 x24: ffff8000a4cc76e0
x23: ffff700014998edc x22: 0000000000000000 x21: 0000000000040d40
x20: 0000000000000000 x19: 000000000000002e x18: 1fffe000337d4076
x17: ffff80008f66e000 x16: ffff80008ae63d08 x15: 0000000000000005
x14: 1ffff00014998ee0 x13: 0000000000000000 x12: 0000000000000000
x11: ffff700014998ee5 x10: dfff800000000000 x9 : 0000000000000001
x8 : ffff800092c53000 x7 : 0000000000000000 x6 : ffff80008022cd90
x5 : ffff0000f18f2cf8 x4 : 0000000000000000 x3 : 0000000000000020
x2 : 0000000000000008 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 __alloc_frozen_pages_noprof+0xd0/0x318 mm/page_alloc.c:4935 (P)
 __alloc_pages_noprof+0x18/0x100 mm/page_alloc.c:4993
 __alloc_pages_node_noprof include/linux/gfp.h:284 [inline]
 alloc_pages_node_noprof include/linux/gfp.h:311 [inline]
 ___kmalloc_large_node+0xa8/0x1d8 mm/slub.c:4272
 __kmalloc_large_node_noprof+0x2c/0x8c mm/slub.c:4300
 __do_kmalloc_node mm/slub.c:4316 [inline]
 __kmalloc_noprof+0x3bc/0x4c8 mm/slub.c:4340
 kmalloc_noprof include/linux/slab.h:909 [inline]
 kzalloc_noprof include/linux/slab.h:1039 [inline]
 v9fs_fid_get_acl+0x64/0x114 fs/9p/acl.c:32
 __v9fs_get_acl fs/9p/acl.c:66 [inline]
 v9fs_get_acl+0x128/0x3ac fs/9p/acl.c:93
 v9fs_qid_iget_dotl fs/9p/vfs_inode_dotl.c:131 [inline]
 v9fs_inode_from_fid_dotl+0x1d8/0x26c fs/9p/vfs_inode_dotl.c:154
 v9fs_get_new_inode_from_fid fs/9p/v9fs.h:251 [inline]
 v9fs_mount+0x598/0x8d4 fs/9p/vfs_super.c:142
 legacy_get_tree+0xd4/0x16c fs/fs_context.c:666
 vfs_get_tree+0x90/0x28c fs/super.c:1804
 do_new_mount+0x228/0x814 fs/namespace.c:3902
 path_mount+0x5b4/0xde0 fs/namespace.c:4226
 do_mount fs/namespace.c:4239 [inline]
 __do_sys_mount fs/namespace.c:4450 [inline]
 __se_sys_mount fs/namespace.c:4427 [inline]
 __arm64_sys_mount+0x3e8/0x468 fs/namespace.c:4427
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x58/0x180 arch/arm64/kernel/entry-common.c:879
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
irq event stamp: 1048
hardirqs last  enabled at (1047): [<ffff800080c3e3ac>] kasan_quarantine_put+0x1a0/0x1c8 mm/kasan/quarantine.c:234
hardirqs last disabled at (1048): [<ffff80008aef6e24>] el1_brk64+0x1c/0x48 arch/arm64/kernel/entry-common.c:574
softirqs last  enabled at (800): [<ffff800080a78f38>] spin_unlock_bh include/linux/spinlock.h:396 [inline]
softirqs last  enabled at (800): [<ffff800080a78f38>] bdi_register_va+0x534/0x7e4 mm/backing-dev.c:1114
softirqs last disabled at (798): [<ffff800080a78d24>] spin_lock_bh include/linux/spinlock.h:356 [inline]
softirqs last disabled at (798): [<ffff800080a78d24>] bdi_register_va+0x320/0x7e4 mm/backing-dev.c:1104
---[ end trace 0000000000000000 ]---