syzkaller0: entered promiscuous mode syzkaller0: entered allmulticast mode ------------[ cut here ]------------ WARNING: CPU: 0 PID: 6754 at ./include/linux/skbuff.h:3071 skb_transport_header include/linux/skbuff.h:3071 [inline] WARNING: CPU: 0 PID: 6754 at ./include/linux/skbuff.h:3071 tcf_get_base_ptr include/net/pkt_cls.h:539 [inline] WARNING: CPU: 0 PID: 6754 at ./include/linux/skbuff.h:3071 em_nbyte_match+0x294/0x350 net/sched/em_nbyte.c:43 Modules linked in: CPU: 0 UID: 0 PID: 6754 Comm: syz.4.25 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : skb_transport_header include/linux/skbuff.h:3071 [inline] pc : tcf_get_base_ptr include/net/pkt_cls.h:539 [inline] pc : em_nbyte_match+0x294/0x350 net/sched/em_nbyte.c:43 lr : skb_transport_header include/linux/skbuff.h:3071 [inline] lr : tcf_get_base_ptr include/net/pkt_cls.h:539 [inline] lr : em_nbyte_match+0x294/0x350 net/sched/em_nbyte.c:43 sp : ffff8000a4356de0 x29: ffff8000a4356de0 x28: 0000000000000001 x27: 000000000000ffff x26: 1fffe000185d2a66 x25: 1fffe00019a1b8b0 x24: dfff800000000000 x23: 000000000000ffff x22: ffff0000c2e95336 x21: ffff0000cd0dc582 x20: ffff0000c2e95280 x19: ffff0000cd0dc580 x18: 0000000000000000 x17: ffff800093335000 x16: ffff80008ad6b188 x15: 0000000000000010 x14: 0000000000000002 x13: 0000000000000002 x12: 0000000000ff0100 x11: 0000000000080000 x10: 0000000000000509 x9 : ffff8000a67dd000 x8 : 000000000000050a x7 : 0000000000000000 x6 : 000000000000003f x5 : 0000000000000040 x4 : 0000000000000000 x3 : 0000000000000004 x2 : 0000000000000000 x1 : 000000000000ffff x0 : 000000000000ffff Call trace: skb_transport_header include/linux/skbuff.h:3071 [inline] (P) tcf_get_base_ptr include/net/pkt_cls.h:539 [inline] (P) em_nbyte_match+0x294/0x350 net/sched/em_nbyte.c:43 (P) 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:512 [inline] basic_classify+0x138/0x30c net/sched/cls_basic.c:50 tc_classify include/net/tc_wrapper.h:223 [inline] __tcf_classify net/sched/cls_api.c:1764 [inline] tcf_classify+0x424/0xdf8 net/sched/cls_api.c:1860 multiq_classify net/sched/sch_multiq.c:39 [inline] multiq_enqueue+0x100/0x404 net/sched/sch_multiq.c:66 dev_qdisc_enqueue+0x60/0x31c net/core/dev.c:4118 __dev_xmit_skb net/core/dev.c:4214 [inline] __dev_queue_xmit+0xcf0/0x32a8 net/core/dev.c:4729 dev_queue_xmit include/linux/netdevice.h:3365 [inline] packet_xmit+0x6c/0x314 net/packet/af_packet.c:275 packet_snd net/packet/af_packet.c:3076 [inline] packet_sendmsg+0x3084/0x4040 net/packet/af_packet.c:3108 sock_sendmsg_nosec net/socket.c:727 [inline] __sock_sendmsg net/socket.c:742 [inline] ____sys_sendmsg+0x490/0x7b8 net/socket.c:2630 ___sys_sendmsg+0x204/0x278 net/socket.c:2684 __sys_sendmsg net/socket.c:2716 [inline] __do_sys_sendmsg net/socket.c:2721 [inline] __se_sys_sendmsg net/socket.c:2719 [inline] __arm64_sys_sendmsg+0x184/0x238 net/socket.c:2719 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:724 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596 irq event stamp: 2543 hardirqs last enabled at (2541): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (2541): [] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194 hardirqs last disabled at (2543): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:412 softirqs last enabled at (2532): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (2542): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]---