------------[ cut here ]------------ kernel BUG at net/core/dev.c:3159! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 44 Comm: kworker/u4:2 Not tainted 5.16.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_nc_worker RIP: 0010:skb_checksum_help+0x4ad/0x5b0 net/core/dev.c:3159 Code: 41 5f c3 e8 f5 49 4e fa 45 89 ec e9 59 ff ff ff e8 e8 49 4e fa 48 89 ef 41 bc ea ff ff ff e8 2a f9 ff ff eb c7 e8 d3 49 4e fa <0f> 0b e8 cc 49 4e fa 0f 0b 4c 89 f7 e8 d2 09 95 fa e9 79 fb ff ff RSP: 0018:ffffc900000072e0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 00000000000000a2 RCX: 0000000000000100 RDX: ffff8880119d5700 RSI: ffffffff87294f8d RDI: 0000000000000003 RBP: ffff888043363780 R08: 0000000000000084 R09: 0000000000000000 R10: ffffffff87294d8f R11: 0000000000000000 R12: ffff8880433637f4 R13: 000000000000005c R14: ffff888043363800 R15: 0000000000000092 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2bf39000 CR3: 0000000050602000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: skb_csum_hwoffload_help+0x126/0x1e0 net/core/dev.c:3534 validate_xmit_skb+0xbd5/0xee0 net/core/dev.c:3577 __dev_queue_xmit+0x8c7/0x3620 net/core/dev.c:4100 neigh_hh_output include/net/neighbour.h:522 [inline] neigh_output include/net/neighbour.h:536 [inline] ip_finish_output2+0x14d4/0x2160 net/ipv4/ip_output.c:221 __ip_finish_output net/ipv4/ip_output.c:299 [inline] __ip_finish_output+0x396/0x640 net/ipv4/ip_output.c:281 ip_finish_output+0x32/0x200 net/ipv4/ip_output.c:309 NF_HOOK_COND include/linux/netfilter.h:296 [inline] ip_output+0x196/0x310 net/ipv4/ip_output.c:423 dst_output include/net/dst.h:450 [inline] ip_local_out+0xaf/0x1a0 net/ipv4/ip_output.c:126 iptunnel_xmit+0x628/0xa50 net/ipv4/ip_tunnel_core.c:82 geneve_xmit_skb drivers/net/geneve.c:966 [inline] geneve_xmit+0x10c8/0x3530 drivers/net/geneve.c:1077 __netdev_start_xmit include/linux/netdevice.h:4608 [inline] netdev_start_xmit include/linux/netdevice.h:4622 [inline] xmit_one net/core/dev.c:3473 [inline] dev_hard_start_xmit+0x1eb/0x920 net/core/dev.c:3489 __dev_queue_xmit+0x2983/0x3620 net/core/dev.c:4109 bond_dev_queue_xmit+0xc3/0x170 drivers/net/bonding/bond_main.c:304 bond_3ad_xor_xmit drivers/net/bonding/bond_main.c:4834 [inline] __bond_start_xmit drivers/net/bonding/bond_main.c:5068 [inline] bond_start_xmit+0xb01/0x1220 drivers/net/bonding/bond_main.c:5096 __netdev_start_xmit include/linux/netdevice.h:4608 [inline] netdev_start_xmit include/linux/netdevice.h:4622 [inline] xmit_one net/core/dev.c:3473 [inline] dev_hard_start_xmit+0x1eb/0x920 net/core/dev.c:3489 sch_direct_xmit+0x19f/0xbc0 net/sched/sch_generic.c:342 qdisc_restart net/sched/sch_generic.c:407 [inline] __qdisc_run+0x4bc/0x1700 net/sched/sch_generic.c:415 qdisc_run include/net/pkt_sched.h:132 [inline] qdisc_run include/net/pkt_sched.h:129 [inline] net_tx_action+0x790/0xd20 net/core/dev.c:4944 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x123/0x180 kernel/softirq.c:636 irq_exit_rcu+0x5/0x20 kernel/softirq.c:648 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:lock_release+0x3f1/0x720 kernel/locking/lockdep.c:5645 Code: 7e 83 f8 01 0f 85 8d 01 00 00 9c 58 f6 c4 02 0f 85 78 01 00 00 48 f7 04 24 00 02 00 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c5 48 c7 45 00 00 00 00 00 c7 45 08 00 00 00 00 48 8b 84 24 RSP: 0018:ffffc9000114fb58 EFLAGS: 00000206 RAX: dffffc0000000000 RBX: 2a25f5a3d32ecc5a RCX: ffffc9000114fba8 RDX: 1ffff1100233ac2a RSI: 0000000000000000 RDI: 0000000000000000 RBP: 1ffff92000229f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000002 R13: 0000000000000003 R14: ffff8880119d6158 R15: ffff8880119d5700 rcu_lock_release include/linux/rcupdate.h:273 [inline] rcu_read_unlock include/linux/rcupdate.h:721 [inline] batadv_nc_process_nc_paths.part.0+0x235/0x3c0 net/batman-adv/network-coding.c:703 batadv_nc_process_nc_paths net/batman-adv/network-coding.c:683 [inline] batadv_nc_worker+0xc46/0xfa0 net/batman-adv/network-coding.c:732 process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298 worker_thread+0x658/0x11f0 kernel/workqueue.c:2445 kthread+0x405/0x4f0 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Modules linked in: ---[ end trace 164714d0aa516832 ]--- RIP: 0010:skb_checksum_help+0x4ad/0x5b0 net/core/dev.c:3159 Code: 41 5f c3 e8 f5 49 4e fa 45 89 ec e9 59 ff ff ff e8 e8 49 4e fa 48 89 ef 41 bc ea ff ff ff e8 2a f9 ff ff eb c7 e8 d3 49 4e fa <0f> 0b e8 cc 49 4e fa 0f 0b 4c 89 f7 e8 d2 09 95 fa e9 79 fb ff ff RSP: 0018:ffffc900000072e0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 00000000000000a2 RCX: 0000000000000100 RDX: ffff8880119d5700 RSI: ffffffff87294f8d RDI: 0000000000000003 RBP: ffff888043363780 R08: 0000000000000084 R09: 0000000000000000 R10: ffffffff87294d8f R11: 0000000000000000 R12: ffff8880433637f4 R13: 000000000000005c R14: ffff888043363800 R15: 0000000000000092 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2bf39000 CR3: 0000000050602000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 7e 83 jle 0xffffff85 2: f8 clc 3: 01 0f add %ecx,(%rdi) 5: 85 8d 01 00 00 9c test %ecx,-0x63ffffff(%rbp) b: 58 pop %rax c: f6 c4 02 test $0x2,%ah f: 0f 85 78 01 00 00 jne 0x18d 15: 48 f7 04 24 00 02 00 testq $0x200,(%rsp) 1c: 00 1d: 74 01 je 0x20 1f: fb sti 20: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 27: fc ff df * 2a: 48 01 c5 add %rax,%rbp <-- trapping instruction 2d: 48 c7 45 00 00 00 00 movq $0x0,0x0(%rbp) 34: 00 35: c7 45 08 00 00 00 00 movl $0x0,0x8(%rbp) 3c: 48 rex.W 3d: 8b .byte 0x8b 3e: 84 .byte 0x84 3f: 24 .byte 0x24