syzbot

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WARNING: CPU: 1 PID: 4318 at mm/page_alloc.c:5449 current_gfp_context include/linux/sched/mm.h:-1 [inline]
WARNING: CPU: 1 PID: 4318 at mm/page_alloc.c:5449 __alloc_pages+0x391/0x470 mm/page_alloc.c:5461
Modules linked in:
CPU: 1 PID: 4318 Comm: syz.0.17 Not tainted 5.15.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:__alloc_pages+0x391/0x470 mm/page_alloc.c:5449
Code: 31 ff e9 b2 fe ff ff e8 7d b2 f5 07 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 50 fd ff ff 4c 89 e7 e8 44 ac 09 00 e9 43 fd ff ff <0f> 0b 45 31 ff e9 ef fe ff ff 65 44 8b 2d 35 9a 4f 7e 41 83 fd 08
RSP: 0018:ffffc9000310fb20 EFLAGS: 00010246
RAX: ffffc9000310fb60 RBX: 1ffff92000621f68 RCX: 0000000000000000
RDX: 0000000000000028 RSI: 0000000000000000 RDI: ffffc9000310fb88
RBP: ffffc9000310fc18 R08: dffffc0000000000 R09: ffffc9000310fb60
R10: fffff52000621f71 R11: 1ffff92000621f6c R12: dffffc0000000000
R13: 0000000000000000 R14: 0000000000040d40 R15: 0000000000000014
FS:  000055557f0f0500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001000 CR3: 00000000738c5000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 kmalloc_order+0x40/0x150 mm/slab_common.c:986
 kmalloc_order_trace+0x14/0xf0 mm/slab_common.c:1002
 kmalloc include/linux/slab.h:609 [inline]
 kzalloc include/linux/slab.h:735 [inline]
 __v9fs_get_acl+0x40/0x110 fs/9p/acl.c:36
 v9fs_get_acl+0xa9/0x260 fs/9p/acl.c:71
 v9fs_mount+0x6c0/0x850 fs/9p/vfs_super.c:184
 legacy_get_tree+0xe6/0x180 fs/fs_context.c:611
 vfs_get_tree+0x88/0x270 fs/super.c:1530
 do_new_mount+0x24a/0xa40 fs/namespace.c:3014
 do_mount fs/namespace.c:3357 [inline]
 __do_sys_mount fs/namespace.c:3565 [inline]
 __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3542
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f64089d9b69
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:00007ffe0cd842b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f6408c00fa0 RCX: 00007f64089d9b69
RDX: 0000200000000b80 RSI: 0000200000000040 RDI: 0000000000000000
RBP: 00007f6408a5cdf1 R08: 0000200000000100 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6408c00fa0 R14: 00007f6408c00fa0 R15: 0000000000000005
 </TASK>