syzbot

------------[ cut here ]------------
WARNING: CPU: 0 PID: 3497 at mm/page_alloc.c:5398 __alloc_pages+0x5cf/0x700
Modules linked in:
CPU: 1 PID: 3497 Comm: syz-executor184 Not tainted 5.15.156-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:__alloc_pages+0x5cf/0x700 mm/page_alloc.c:5398
Code: 00 48 ba 00 00 00 00 00 fc ff df e9 1d fd ff ff 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 2e fd ff ff e8 16 40 0a 00 e9 24 fd ff ff <0f> 0b 45 31 e4 e9 70 fd ff ff 48 8d 4c 24 50 80 e1 07 80 c1 03 38
RSP: 0018:ffffc90002cd7a20 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: 0000000000000014 RCX: 0000000000000000
RDX: 0000000000000028 RSI: 0000000000000000 RDI: ffffc90002cd7aa8
RBP: ffffc90002cd7b40 R08: dffffc0000000000 R09: ffffc90002cd7a80
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000040d40
R13: 1ffff9200059af4c R14: ffffc90002cd7a80 R15: 1ffff9200059af48
FS:  0000555556392480(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056101bd81cf8 CR3: 000000001a97b000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 kmalloc_order+0x41/0x150 mm/slab_common.c:966
 kmalloc_order_trace+0x15/0xe0 mm/slab_common.c:982
 kmalloc_large include/linux/slab.h:520 [inline]
 __kmalloc+0x214/0x300 mm/slub.c:4396
 kmalloc include/linux/slab.h:596 [inline]
 kzalloc include/linux/slab.h:721 [inline]
 __v9fs_get_acl+0x40/0x110 fs/9p/acl.c:36
 v9fs_get_acl+0xa5/0x280 fs/9p/acl.c:71
 v9fs_mount+0x6dc/0x860 fs/9p/vfs_super.c:184
 legacy_get_tree+0xeb/0x180 fs/fs_context.c:611
 vfs_get_tree+0x88/0x270 fs/super.c:1517
 do_new_mount+0x2ba/0xb40 fs/namespace.c:3005
 do_mount fs/namespace.c:3348 [inline]
 __do_sys_mount fs/namespace.c:3556 [inline]
 __se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3533
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f6624d17459
Code: 48 83 c4 28 c3 e8 67 17 00 00 0f 1f 80 00 00 00 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffcb481b9c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffcb481b9d0 RCX: 00007f6624d17459
RDX: 0000000020000140 RSI: 0000000020000200 RDI: 0000000000000000
RBP: 00007ffcb481b9d8 R08: 0000000020000380 R09: 00007f6624ce4260
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcb481bc38 R14: 0000000000000001 R15: 0000000000000001
 </TASK>