syzbot

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WARNING: CPU: 0 PID: 4433 at mm/page_alloc.c:5590 __alloc_pages+0x2f4/0x4e0 mm/page_alloc.c:5590
Modules linked in:
CPU: 0 PID: 4433 Comm: syz.0.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:__alloc_pages+0x2f4/0x4e0 mm/page_alloc.c:5590
Code: 0c 25 28 00 00 00 48 3b 8c 24 a0 00 00 00 0f 85 a0 00 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 c6 05 5f 3f 45 0c 01 <0f> 0b eb a5 a9 00 00 08 00 8b 74 24 04 75 3e 44 89 f1 81 e1 7f ff
RSP: 0018:ffffc90003487a80 EFLAGS: 00010246
RAX: ffffc90003487a00 RBX: 1ffff92000690f54 RCX: 0000000000000000
RDX: 0000000000000028 RSI: 0000000000000000 RDI: ffffc90003487ae8
RBP: ffffc90003487b80 R08: dffffc0000000000 R09: ffffc90003487ac0
R10: fffff52000690f5d R11: 1ffff92000690f58 R12: 0000000000000033
R13: 0000000000000000 R14: 0000000000040d40 R15: dffffc0000000000
FS:  0000555592756500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055f8d7baecb0 CR3: 0000000025ff5000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __alloc_pages_node include/linux/gfp.h:237 [inline]
 alloc_pages_node include/linux/gfp.h:260 [inline]
 __kmalloc_large_node+0x8c/0x1e0 mm/slab_common.c:1077
 __do_kmalloc_node mm/slab_common.c:924 [inline]
 __kmalloc+0x110/0x240 mm/slab_common.c:949
 kmalloc include/linux/slab.h:568 [inline]
 kzalloc include/linux/slab.h:699 [inline]
 __v9fs_get_acl+0x40/0x110 fs/9p/acl.c:28
 v9fs_get_acl+0x97/0x260 fs/9p/acl.c:62
 v9fs_mount+0x875/0xb40 fs/9p/vfs_super.c:184
 legacy_get_tree+0xe6/0x180 fs/fs_context.c:632
 vfs_get_tree+0x88/0x270 fs/super.c:1573
 do_new_mount+0x24a/0xa40 fs/namespace.c:3069
 do_mount fs/namespace.c:3412 [inline]
 __do_sys_mount fs/namespace.c:3620 [inline]
 __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3597
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f81a2f8eec9
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:00007ffd1336bcd8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f81a31e5fa0 RCX: 00007f81a2f8eec9
RDX: 0000200000000b80 RSI: 00002000000003c0 RDI: 0000000000000000
RBP: 00007f81a3011f91 R08: 0000200000000500 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f81a31e5fa0 R14: 00007f81a31e5fa0 R15: 0000000000000005
 </TASK>