device syzkaller0 entered promiscuous mode ------------[ cut here ]------------ WARNING: CPU: 0 PID: 4394 at include/linux/skbuff.h:2844 skb_transport_header include/linux/skbuff.h:2844 [inline] WARNING: CPU: 0 PID: 4394 at include/linux/skbuff.h:2844 tcf_get_base_ptr include/net/pkt_cls.h:529 [inline] WARNING: CPU: 0 PID: 4394 at include/linux/skbuff.h:2844 em_nbyte_match+0x2cc/0x3e0 net/sched/em_nbyte.c:43 Modules linked in: CPU: 0 PID: 4394 Comm: syz.1.9 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 RIP: 0010:skb_transport_header include/linux/skbuff.h:2844 [inline] RIP: 0010:tcf_get_base_ptr include/net/pkt_cls.h:529 [inline] RIP: 0010:em_nbyte_match+0x2cc/0x3e0 net/sched/em_nbyte.c:43 Code: c0 eb 07 e8 36 fd 1a f9 31 c0 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 20 fd 1a f9 0f 0b e9 e5 fe ff ff e8 14 fd 1a f9 <0f> 0b e9 00 fe ff ff 89 d1 80 e1 07 fe c1 38 c1 0f 8c 7a fd ff ff RSP: 0018:ffffc9000477f118 EFLAGS: 00010283 RAX: ffffffff8867769c RBX: ffff88802d151dc0 RCX: 0000000000080000 RDX: ffffc90005bb9000 RSI: 000000000000025a RDI: 000000000000025b RBP: 000000000000ffff R08: ffff88807be8d940 R09: 0000000000000003 R10: 0000000000000002 R11: 0000000000000002 R12: dffffc0000000000 R13: 1ffff11005a2a3ce R14: ffff888078daa488 R15: 1ffff1100f1b5491 FS: 00007f1ed2d796c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000002280 CR3: 0000000029881000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: tcf_em_match net/sched/ematch.c:494 [inline] __tcf_em_tree_match+0x1cb/0x7a0 net/sched/ematch.c:520 tcf_em_tree_match include/net/pkt_cls.h:502 [inline] basic_classify+0x111/0x2c0 net/sched/cls_basic.c:48 __tcf_classify net/sched/cls_api.c:1569 [inline] tcf_classify+0x331/0xbf0 net/sched/cls_api.c:1635 multiq_classify net/sched/sch_multiq.c:39 [inline] multiq_enqueue+0xfb/0x4b0 net/sched/sch_multiq.c:66 dev_qdisc_enqueue+0x4c/0x2b0 net/core/dev.c:3888 __dev_xmit_skb net/core/dev.c:3977 [inline] __dev_queue_xmit+0xfdc/0x37f0 net/core/dev.c:4325 packet_snd net/packet/af_packet.c:3127 [inline] packet_sendmsg+0x3bc3/0x4e60 net/packet/af_packet.c:3158 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] ____sys_sendmsg+0x5be/0x970 net/socket.c:2518 ___sys_sendmsg+0x2a2/0x360 net/socket.c:2572 __sys_sendmsg net/socket.c:2601 [inline] __do_sys_sendmsg net/socket.c:2610 [inline] __se_sys_sendmsg+0x1bb/0x2a0 net/socket.c:2608 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f1ed1f9bf79 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f1ed2d79028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f1ed2215fa0 RCX: 00007f1ed1f9bf79 RDX: 0000000000000004 RSI: 00002000000000c0 RDI: 0000000000000006 RBP: 00007f1ed20327e0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f1ed2216038 R14: 00007f1ed2215fa0 R15: 00007fff6a56e5b8