[syzbot] [mm?] WARNING in raw_ioctl

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 72fb0170ef1f Add linux-next specific files for 20251024
git tree: linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=10fd0be2580000
kernel config: https://syzkaller.appspot.com/x/.config?x=e812d103f45aa955
dashboard link: https://syzkaller.appspot.com/bug?extid=d8fd35fa6177afa8c92b
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=119eae7c580000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=140693e2580000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/be1fa3d1f761/disk-72fb0170.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/57302bf7af40/vmlinux-72fb0170.xz
kernel image: https://storage.googleapis.com/syzbot-assets/91c806bb2a2b/bzImage-72fb0170.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+d8fd35...@syzkaller.appspotmail.com

------------[ cut here ]------------
WARNING: mm/page_alloc.c:5190 at __alloc_frozen_pages_noprof+0x2c8/0x370 mm/page_alloc.c:5190, CPU#1: syz.0.17/6001
Modules linked in:
CPU: 1 UID: 0 PID: 6001 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:__alloc_frozen_pages_noprof+0x2c8/0x370 mm/page_alloc.c:5190
Code: 74 10 4c 89 e7 89 54 24 0c e8 64 b9 0d 00 8b 54 24 0c 49 83 3c 24 00 0f 85 a5 fe ff ff e9 a6 fe ff ff c6 05 b1 7d 70 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:ffffc90003017920 EFLAGS: 00010246
RAX: ffffc90003017900 RBX: 0000000000000013 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc90003017988
RBP: ffffc90003017a18 R08: ffffc90003017987 R09: 0000000000000000
R10: ffffc90003017960 R11: fffff52000602f31 R12: 0000000000000000
R13: 1ffff92000602f28 R14: 0000000000040cc0 R15: dffffc0000000000
FS: 000055558dedb500(0000) GS:ffff888125ddc000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffef4504a80 CR3: 0000000072ffa000 CR4: 00000000003526f0
Call Trace:
<TASK>
alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2418
___kmalloc_large_node+0x5f/0x1b0 mm/slub.c:5583
__kmalloc_large_node_noprof+0x18/0x90 mm/slub.c:5614
__do_kmalloc_node mm/slub.c:5630 [inline]
__kmalloc_noprof+0x4c9/0x800 mm/slub.c:5654
kmalloc_noprof include/linux/slab.h:961 [inline]
raw_alloc_io_data drivers/usb/gadget/legacy/raw_gadget.c:673 [inline]
raw_ioctl_ep_read drivers/usb/gadget/legacy/raw_gadget.c:1162 [inline]
raw_ioctl+0x18fb/0x3be0 drivers/usb/gadget/legacy/raw_gadget.c:1325
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:597 [inline]
__se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fccefd8efc9
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:00007ffef4505ad8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fcceffe5fa0 RCX: 00007fccefd8efc9
RDX: 00002000000000c0 RSI: 00000000c0085508 RDI: 0000000000000004
RBP: 00007fccefe11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fcceffe5fa0 R14: 00007fcceffe5fa0 R15: 0000000000000003
</TASK>


---
This report is generated by a bot. It may contain errors.
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If the report is already addressed, let syzbot know by replying with:
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If you want syzbot to run the reproducer, reply with:
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If you want to undo deduplication, reply with:
#syz undup

[syzbot]

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger any issue:

Reported-by: syzbot+d8fd35...@syzkaller.appspotmail.com
Tested-by: syzbot+d8fd35...@syzkaller.appspotmail.com

Tested on:

commit: 72fb0170 Add linux-next specific files for 20251024
git tree: linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=125cc258580000

kernel config: https://syzkaller.appspot.com/x/.config?x=e812d103f45aa955
dashboard link: https://syzkaller.appspot.com/bug?extid=d8fd35fa6177afa8c92b
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8

patch: https://syzkaller.appspot.com/x/patch.diff?x=13036e7c580000

Note: testing is done by a robot and is best-effort only.

[syzbot]

Hello,

syzbot tried to test the proposed patch but the build/boot failed:

failed to apply patch:
checking file drivers/usb/gadget/legacy/raw_gadget.c
checking file include/uapi/linux/usb/raw_gadget.h
patch: **** unexpected end of file in patch

Tested on:

commit: 72fb0170 Add linux-next specific files for 20251024
git tree: linux-next

kernel config: https://syzkaller.appspot.com/x/.config?x=e812d103f45aa955
dashboard link: https://syzkaller.appspot.com/bug?extid=d8fd35fa6177afa8c92b
compiler:

patch: https://syzkaller.appspot.com/x/patch.diff?x=16ea4be2580000

[syzbot]

patch: https://syzkaller.appspot.com/x/patch.diff?x=1386c258580000

[syzbot]

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger any issue:

Reported-by: syzbot+d8fd35...@syzkaller.appspotmail.com
Tested-by: syzbot+d8fd35...@syzkaller.appspotmail.com

Tested on:

commit: 72fb0170 Add linux-next specific files for 20251024
git tree: linux-next

console output: https://syzkaller.appspot.com/x/log.txt?x=133e1d42580000

kernel config: https://syzkaller.appspot.com/x/.config?x=e812d103f45aa955
dashboard link: https://syzkaller.appspot.com/bug?extid=d8fd35fa6177afa8c92b

compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8

patch: https://syzkaller.appspot.com/x/patch.diff?x=10c72614580000

[syzbot]

Hello,

syzbot has tested the proposed patch and the reproducer did not trigger any issue:

Reported-by: syzbot+d8fd35...@syzkaller.appspotmail.com
Tested-by: syzbot+d8fd35...@syzkaller.appspotmail.com

Tested on:

commit: 72fb0170 Add linux-next specific files for 20251024
git tree: linux-next

console output: https://syzkaller.appspot.com/x/log.txt?x=17d91d42580000

kernel config: https://syzkaller.appspot.com/x/.config?x=e812d103f45aa955
dashboard link: https://syzkaller.appspot.com/bug?extid=d8fd35fa6177afa8c92b
compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8

patch: https://syzkaller.appspot.com/x/patch.diff?x=10214be2580000