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charset="UTF-8" Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: WARNING in __alloc_skb ------------[ cut here ]------------ WARNING: mm/page_alloc.c:5124 at __alloc_frozen_pages_noprof+0x2c8/0x370 mm/page_alloc.c:5124, CPU#0: dhcpcd/5533 Modules linked in: CPU: 0 UID: 0 PID: 5533 Comm: dhcpcd Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 RIP: 0010:__alloc_frozen_pages_noprof+0x2c8/0x370 mm/page_alloc.c:5124 Code: 74 10 4c 89 e7 89 54 24 0c e8 f4 11 0d 00 8b 54 24 0c 49 83 3c 24 00 0f 85 a5 fe ff ff e9 a6 fe ff ff c6 05 fe aa b7 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:ffffc90000007780 EFLAGS: 00010246 RAX: ffffc90000007700 RBX: 0000000000000014 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc900000077e8 RBP: ffffc90000007870 R08: ffffc900000077e7 R09: 0000000000000000 R10: ffffc900000077c0 R11: fffff52000000efd R12: 0000000000000000 R13: 1ffff92000000ef4 R14: 0000000000060820 R15: dffffc0000000000 FS: 00007f76a8485740(0000) GS:ffff8881257c4000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000056268ae52138 CR3: 0000000032510000 CR4: 00000000003526f0 Call Trace: alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2416 ___kmalloc_large_node+0x5f/0x1b0 mm/slub.c:4306 __kmalloc_large_node_noprof+0x18/0x90 mm/slub.c:4337 __do_kmalloc_node mm/slub.c:4353 [inline] __kmalloc_node_track_caller_noprof+0x34d/0x4a0 mm/slub.c:4384 kmalloc_reserve+0x1b8/0x290 net/core/skbuff.c:608 __alloc_skb+0x142/0x2d0 net/core/skbuff.c:669 __netdev_alloc_skb+0x108/0x970 net/core/skbuff.c:733 rx_submit+0x100/0xab0 drivers/net/usb/usbnet.c:-1 rx_alloc_submit+0xa6/0x140 drivers/net/usb/usbnet.c:1538 usbnet_bh+0x9a5/0xd70 drivers/net/usb/usbnet.c:1607 process_one_work kernel/workqueue.c:3236 [inline] process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3319 bh_worker+0x2b1/0x600 kernel/workqueue.c:3579 tasklet_action+0xc/0x70 kernel/softirq.c:854 handle_softirqs+0x283/0x870 kernel/softirq.c:579 do_softirq+0xec/0x180 kernel/softirq.c:480 __local_bh_enable_ip+0x17d/0x1c0 kernel/softirq.c:407 __dev_open+0x694/0x880 net/core/dev.c:1690 __dev_change_flags+0x1ea/0x6d0 net/core/dev.c:9549 netif_change_flags+0x88/0x1a0 net/core/dev.c:9612 dev_change_flags+0x130/0x260 net/core/dev_api.c:68 devinet_ioctl+0xbb4/0x1b50 net/ipv4/devinet.c:1200 inet_ioctl+0x3c0/0x4c0 net/ipv4/af_inet.c:1001 sock_do_ioctl+0xd9/0x300 net/socket.c:1238 sock_ioctl+0x576/0x790 net/socket.c:1359 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:598 [inline] __se_sys_ioctl+0xf9/0x170 fs/ioctl.c:584 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: 0033:0x7f76a8585378 Code: 00 00 48 8d 44 24 08 48 89 54 24 e0 48 89 44 24 c0 48 8d 44 24 d0 48 89 44 24 c8 b8 10 00 00 00 c7 44 24 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 07 89 d0 c3 0f 1f 40 00 48 8b 15 49 3a 0d RSP: 002b:00007ffd0f936168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000012 RCX: 00007f76a8585378 RDX: 00007ffd0f946360 RSI: 0000000000008914 RDI: 0000000000000012 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd0f956500 R13: 00007f76a84856c8 R14: 0000000000000028 R15: 0000000000008914 Tested on: commit: 7fa4d8dc Add linux-next specific files for 20250821 git tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/ console output: https://syzkaller.appspot.com/x/log.txt?x=115a1858580000 kernel config: https://syzkaller.appspot.com/x/.config?x=53aaf18b1b202211 dashboard link: https://syzkaller.appspot.com/bug?extid=5a2250fd91b28106c37b compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 Note: no patches were applied.