/dev/rnullb0: Can't open blockdev
------------[ cut here ]------------
WARNING: mm/page_alloc.c:5124 at __alloc_frozen_pages_noprof+0x2c8/0x370 mm/page_alloc.c:5124, CPU#0: syz.2.1214/13741
Modules linked in:
CPU: 0 UID: 0 PID: 13741 Comm: syz.2.1214 Not tainted 6.16.0-rc5-next-20250711-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:__alloc_frozen_pages_noprof+0x2c8/0x370 mm/page_alloc.c:5124
Code: 74 10 4c 89 e7 89 54 24 0c e8 14 23 0d 00 8b 54 24 0c 49 83 3c 24 00 0f 85 a5 fe ff ff e9 a6 fe ff ff c6 05 61 24 b7 0d 01 90 <0f> 0b 90 e9 18 ff ff ff a9 00 00 08 00 48 8b 4c 24 10 4c 8d 44 24
RSP: 0018:ffffc9000f0278c0 EFLAGS: 00010246
RAX: ffffc9000f027900 RBX: 000000000000002e RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc9000f027928
RBP: ffffc9000f0279c0 R08: ffffc9000f027927 R09: 0000000000000000
R10: ffffc9000f027900 R11: fffff52001e04f25 R12: 0000000000000000
R13: 1ffff92001e04f1c R14: 0000000000040d40 R15: dffffc0000000000
FS:  00007f7af97f66c0(0000) GS:ffff88812578f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7afb9743e0 CR3: 00000000308e0000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 00000000000032e7 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2419
 ___kmalloc_large_node+0x5f/0x1b0 mm/slub.c:4306
 __kmalloc_large_node_noprof+0x18/0x90 mm/slub.c:4337
 __do_kmalloc_node mm/slub.c:4353 [inline]
 __kmalloc_noprof+0x36f/0x4f0 mm/slub.c:4377
 kmalloc_noprof include/linux/slab.h:909 [inline]
 kzalloc_noprof include/linux/slab.h:1039 [inline]
 v9fs_fid_get_acl+0x4f/0x100 fs/9p/acl.c:32
 __v9fs_get_acl fs/9p/acl.c:66 [inline]
 v9fs_get_acl+0x9a/0x360 fs/9p/acl.c:92
 v9fs_qid_iget_dotl fs/9p/vfs_inode_dotl.c:131 [inline]
 v9fs_inode_from_fid_dotl+0x221/0x2b0 fs/9p/vfs_inode_dotl.c:154
 v9fs_get_new_inode_from_fid fs/9p/v9fs.h:251 [inline]
 v9fs_mount+0x6eb/0xa50 fs/9p/vfs_super.c:144
 legacy_get_tree+0xfa/0x1a0 fs/fs_context.c:666
 vfs_get_tree+0x8f/0x2b0 fs/super.c:1804
 do_new_mount+0x2a2/0x9e0 fs/namespace.c:3805
 do_mount fs/namespace.c:4133 [inline]
 __do_sys_mount fs/namespace.c:4344 [inline]
 __se_sys_mount+0x317/0x410 fs/namespace.c:4321
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7afb98e929
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f7af97f6038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f7afbbb5fa0 RCX: 00007f7afb98e929
RDX: 0000200000000b80 RSI: 00002000000003c0 RDI: 0000000000000000
RBP: 00007f7afba10b39 R08: 0000200000000500 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f7afbbb5fa0 R15: 00007ffd3a9a0ae8
 </TASK>