device syzkaller0 entered promiscuous mode ------------[ cut here ]------------ WARNING: CPU: 1 PID: 4457 at include/linux/skbuff.h:2844 skb_transport_header include/linux/skbuff.h:2844 [inline] WARNING: CPU: 1 PID: 4457 at include/linux/skbuff.h:2844 tcf_get_base_ptr include/net/pkt_cls.h:529 [inline] WARNING: CPU: 1 PID: 4457 at include/linux/skbuff.h:2844 em_nbyte_match+0x294/0x350 net/sched/em_nbyte.c:43 Modules linked in: CPU: 1 PID: 4457 Comm: syz.0.17 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : skb_transport_header include/linux/skbuff.h:2844 [inline] pc : tcf_get_base_ptr include/net/pkt_cls.h:529 [inline] pc : em_nbyte_match+0x294/0x350 net/sched/em_nbyte.c:43 lr : skb_transport_header include/linux/skbuff.h:2844 [inline] lr : tcf_get_base_ptr include/net/pkt_cls.h:529 [inline] lr : em_nbyte_match+0x294/0x350 net/sched/em_nbyte.c:43 sp : ffff8000212f7000 x29: ffff8000212f7000 x28: 0000000000000001 x27: 000000000000ffff x26: 1fffe0001abaeb2e x25: 1fffe00019e79140 x24: dfff800000000000 x23: 000000000000ffff x22: ffff0000d5d75976 x21: ffff0000cf3c8a02 x20: ffff0000d5d758c0 x19: ffff0000cf3c8a00 x18: 0000000000000000 x17: ffff8000181f9000 x16: ffff8000082e7914 x15: 0000000000000000 x14: 0000000000000002 x13: 0000000000ff0100 x12: 0000000000ff0100 x11: ff0080001002fc2c x10: 0000000000000000 x9 : ffff80001002fc2c x8 : ffff0000d2ae3780 x7 : 0000000000000000 x6 : 000000000000003f x5 : 0000000000000040 x4 : ffffffffffffffe0 x3 : 0000000000000020 x2 : 0000000000000000 x1 : 000000000000ffff x0 : 000000000000ffff Call trace: skb_transport_header include/linux/skbuff.h:2844 [inline] tcf_get_base_ptr include/net/pkt_cls.h:529 [inline] em_nbyte_match+0x294/0x350 net/sched/em_nbyte.c:43 tcf_em_match net/sched/ematch.c:494 [inline] __tcf_em_tree_match+0x164/0x5bc net/sched/ematch.c:520 tcf_em_tree_match include/net/pkt_cls.h:502 [inline] basic_classify+0x138/0x30c net/sched/cls_basic.c:48 __tcf_classify net/sched/cls_api.c:1569 [inline] tcf_classify+0x1b8/0x9c8 net/sched/cls_api.c:1635 multiq_classify net/sched/sch_multiq.c:39 [inline] multiq_enqueue+0x100/0x404 net/sched/sch_multiq.c:66 dev_qdisc_enqueue+0x5c/0x38c net/core/dev.c:3875 __dev_xmit_skb net/core/dev.c:3964 [inline] __dev_queue_xmit+0xad0/0x309c net/core/dev.c:4312 dev_queue_xmit+0x24/0x34 include/linux/netdevice.h:3051 packet_snd net/packet/af_packet.c:3127 [inline] packet_sendmsg+0x2f6c/0x3fac net/packet/af_packet.c:3158 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] ____sys_sendmsg+0x5b8/0x918 net/socket.c:2519 ___sys_sendmsg net/socket.c:2573 [inline] __sys_sendmsg+0x25c/0x320 net/socket.c:2602 __do_sys_sendmsg net/socket.c:2611 [inline] __se_sys_sendmsg net/socket.c:2609 [inline] __arm64_sys_sendmsg+0x80/0x94 net/socket.c:2609 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 irq event stamp: 4353 hardirqs last enabled at (4351): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (4351): [] _raw_spin_unlock_irqrestore+0x48/0xac kernel/locking/spinlock.c:194 hardirqs last disabled at (4353): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (4330): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (4352): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]---