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9HWMY75vawF5YKjpMsAWRR0zj4BddoA4aCLnLMtLwhHAkcdUNrHz5it7WU2SPVQmpqE1zd4sl+IS2gT41dFOd/Mdd6VWiLMMFeCmqwZJ/iz6N7d9wgDRCLMmWrkmrvg977p3CtNzs9zzqH2SvplUqgD7+em3AvjvP9xeT5f0bjQ3yIdkxeedw3zp8tTvKFxWHvZYZiLgKUq+gdCBl4JoTTOC/pfopHRRa8XZr6/wltoXOpekpCpBA/b+UCd1UK803rbqtpihIZm7tvD4z4I9ILtxEVsx8AgrkCVvV4mCsql+aVgXp8X6KXm1VavibxIfdzhOLJ7MIEC0MiEAhLJRWok/Ib9Mas0o X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Mon, Oct 27, 2025 at 02:18:32PM -0700, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: dcb6fa37fd7b Linux 6.18-rc3 > git tree: upstream > console output: https://syzkaller.appspot.com/x/log.txt?x=160597e2580000 > kernel config: https://syzkaller.appspot.com/x/.config?x=609c87dcb0628493 > dashboard link: https://syzkaller.appspot.com/bug?extid=a894fe5447d0543e89c9 > compiler: gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11af27e2580000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11c2d614580000 > > Downloadable assets: > disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/d900f083ada3/non_bootable_disk-dcb6fa37.raw.xz > vmlinux: https://storage.googleapis.com/syzbot-assets/61176fd888a1/vmlinux-dcb6fa37.xz > kernel image: https://storage.googleapis.com/syzbot-assets/84e7e9924c22/bzImage-dcb6fa37.xz > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+a894fe5447d0543e89c9@syzkaller.appspotmail.com > > ------------[ cut here ]------------ > WARNING: CPU: 3 PID: 6091 at mm/page_alloc.c:5159 __alloc_frozen_pages_noprof+0x309/0x2470 mm/page_alloc.c:5159 > Modules linked in: > CPU: 3 UID: 0 PID: 6091 Comm: syz.0.17 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_frozen_pages_noprof+0x309/0x2470 mm/page_alloc.c:5159 > Code: f0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 83 fe 0a 0f 86 0c fe ff ff 80 3d d4 63 52 0e 00 75 0b c6 05 cb 63 52 0e 01 90 <0f> 0b 90 45 31 f6 eb 81 4d 85 f6 74 22 44 89 fa 89 ee 4c 89 f7 e8 > RSP: 0018:ffffc9000371f9f8 EFLAGS: 00010246 > RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 > RDX: 0000000000000000 RSI: 0000000000000014 RDI: 0000000000040cc0 > RBP: 0000000000000014 R08: 0000000000000005 R09: 0000000000000009 > R10: 0000000000000014 R11: 0000000000000001 R12: 0000000000040cc0 > R13: 1ffff920006e3f55 R14: ffffffff9ab2c464 R15: 0000000000000014 > FS: 000055557bf92500(0000) GS:ffff8880d6d0a000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 00007f84d9710300 CR3: 0000000032452000 CR4: 0000000000352ef0 > Call Trace: > > alloc_pages_mpol+0x1fb/0x550 mm/mempolicy.c:2416 > ___kmalloc_large_node+0xed/0x160 mm/slub.c:5583 > __kmalloc_large_node_noprof+0x1c/0x70 mm/slub.c:5614 > __do_kmalloc_node mm/slub.c:5630 [inline] > __kmalloc_noprof.cold+0xc/0x62 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_alloc_io_data+0x12c/0x1a0 drivers/usb/gadget/legacy/raw_gadget.c:659 > raw_ioctl_ep0_read drivers/usb/gadget/legacy/raw_gadget.c:776 [inline] > raw_ioctl+0x1397/0x2c30 drivers/usb/gadget/legacy/raw_gadget.c:1313 > vfs_ioctl fs/ioctl.c:51 [inline] > __do_sys_ioctl fs/ioctl.c:597 [inline] > __se_sys_ioctl fs/ioctl.c:583 [inline] > __x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:583 > do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] > do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94 > entry_SYSCALL_64_after_hwframe+0x77/0x7f > RIP: 0033:0x7f84d938efc9 > 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:00007ffe768729f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 > RAX: ffffffffffffffda RBX: 00007f84d95e5fa0 RCX: 00007f84d938efc9 > RDX: 0000200000000080 RSI: 00000000c0085504 RDI: 0000000000000006 > RBP: 00007f84d9411f91 R08: 0000000000000000 R09: 0000000000000000 > R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 > R13: 00007f84d95e5fa0 R14: 00007f84d95e5fa0 R15: 0000000000000003 > > > > --- > This report is generated by a bot. It may contain errors. > See https://goo.gl/tpsmEJ for more information about syzbot. > syzbot engineers can be reached at syzkaller@googlegroups.com. > > syzbot will keep track of this issue. See: > https://goo.gl/tpsmEJ#status for how to communicate with syzbot. > > If the report is already addressed, let syzbot know by replying with: > #syz fix: exact-commit-title > > If you want syzbot to run the reproducer, reply with: > #syz test: git://repo/address.git branch-or-commit-hash > If you attach or paste a git patch, syzbot will apply it before testing. > > If you want to overwrite report's subsystems, reply with: > #syz set subsystems: new-subsystem > (See the list of subsystem names on the web dashboard) > > If the report is a duplicate of another one, reply with: > #syz dup: exact-subject-of-another-report > > If you want to undo deduplication, reply with: > #syz undup #syz dup: [syzbot] [mm?] WARNING in raw_ioctl