------------[ cut here ]------------
WARNING: CPU: 1 PID: 25877 at mm/page_alloc.c:4654 __alloc_pages_slowpath mm/page_alloc.c:4654 [inline]
WARNING: CPU: 1 PID: 25877 at mm/page_alloc.c:4654 __alloc_frozen_pages_noprof+0x1f87/0x2470 mm/page_alloc.c:5196
Modules linked in:
CPU: 1 UID: 0 PID: 25877 Comm: syz.5.5512 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:__alloc_pages_slowpath mm/page_alloc.c:4654 [inline]
RIP: 0010:__alloc_frozen_pages_noprof+0x1f87/0x2470 mm/page_alloc.c:5196
Code: 10 00 00 00 44 8b 7c 24 48 44 8b ac 24 94 00 00 00 41 89 c6 0f b6 c0 89 44 24 24 e9 75 f8 ff ff 90 0f 0b 90 e9 10 fb ff ff 90 <0f> 0b 90 e9 fb fa ff ff 48 89 ef e8 99 65 0d 00 e9 26 f1 ff ff 4c
RSP: 0018:ffffc9000d4d77c0 EFLAGS: 00010202
RAX: 0000000000008000 RBX: 0000000000000000 RCX: ffffc9000d4d78fc
RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff88803fffd9b8
RBP: 0000000000048cc0 R08: 0000000000007f8c R09: 0000000000004cc9
R10: 0000000000000000 R11: ffffc9000d4d78f0 R12: ffff88803fffbb80
R13: 1ffff92001a9af0e R14: 0000000000000000 R15: 0000000000000002
FS: 0000000000000000(0000) GS:ffff888097912000(0063) knlGS:00000000f5494b40
CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f73fb664 CR3: 000000006e392000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 00000000e08e000e DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
<TASK>
alloc_pages_mpol+0x1fb/0x550 mm/mempolicy.c:2416
alloc_slab_page mm/slub.c:3046 [inline]
allocate_slab mm/slub.c:3227 [inline]
new_slab+0x268/0x360 mm/slub.c:3273
___slab_alloc+0xdc4/0x1ae0 mm/slub.c:4643
__slab_alloc.constprop.0+0x63/0x110 mm/slub.c:4762
__slab_alloc_node mm/slub.c:4838 [inline]
slab_alloc_node mm/slub.c:5260 [inline]
__kmalloc_cache_noprof+0x477/0x780 mm/slub.c:5750
kmalloc_noprof include/linux/slab.h:957 [inline]
kzalloc_noprof include/linux/slab.h:1094 [inline]
xfs_init_fs_context+0x45/0x5e0 fs/xfs/xfs_super.c:2224
alloc_fs_context+0x54d/0x9c0 fs/fs_context.c:315
do_new_mount fs/namespace.c:3707 [inline]
path_mount+0xe1b/0x23a0 fs/namespace.c:4037
do_mount fs/namespace.c:4050 [inline]
__do_sys_mount fs/namespace.c:4238 [inline]
__se_sys_mount fs/namespace.c:4215 [inline]
__ia32_sys_mount+0x291/0x310 fs/namespace.c:4215
do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
__do_fast_syscall_32+0x7c/0x300 arch/x86/entry/syscall_32.c:306
do_fast_syscall_32+0x32/0x80 arch/x86/entry/syscall_32.c:331
entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf7fe5579
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f549455c EFLAGS: 00000296 ORIG_RAX: 0000000000000015
RAX: ffffffffffffffda RBX: 0000000080000140 RCX: 0000000080000040
RDX: 0000000080000080 RSI: 0000000002208004 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
</TASK>
----------------
Code disassembly (best guess), 2 bytes skipped:
0: 10 06 adc %al,(%rsi)
2: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi
6: 10 07 adc %al,(%rdi)
8: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi
c: 10 08 adc %cl,(%rax)
e: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi
1e: 00 51 52 add %dl,0x52(%rcx)
21: 55 push %rbp
22: 89 e5 mov %esp,%ebp
24: 0f 34 sysenter
26: cd 80 int $0x80
* 28: 5d pop %rbp <-- trapping instruction
29: 5a pop %rdx
2a: 59 pop %rcx
2b: c3 ret
2c: 90 nop
2d: 90 nop
2e: 90 nop
2f: 90 nop
30: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi
37: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi