------------[ cut here ]------------ Illegal XDP return value 16128, expect packet loss! WARNING: CPU: 0 PID: 6583 at net/core/filter.c:8186 bpf_warn_invalid_xdp_action net/core/filter.c:8186 [inline] WARNING: CPU: 0 PID: 6583 at net/core/filter.c:8186 bpf_warn_invalid_xdp_action+0x6f/0x80 net/core/filter.c:8182 Modules linked in: CPU: 0 PID: 6583 Comm: syz-executor906 Not tainted 5.15.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:bpf_warn_invalid_xdp_action net/core/filter.c:8186 [inline] RIP: 0010:bpf_warn_invalid_xdp_action+0x6f/0x80 net/core/filter.c:8182 Code: 00 ed 8c 8a 41 83 fc 04 48 c7 c6 40 ed 8c 8a 48 0f 46 ee e8 03 35 4c fa 44 89 e2 48 c7 c7 80 ed 8c 8a 48 89 ee e8 08 6c cb 01 <0f> 0b 5b 5d 41 5c e9 e6 34 4c fa 66 0f 1f 44 00 00 41 57 41 56 49 RSP: 0018:ffffc90000007990 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff88801f4b3900 RSI: ffffffff815e9b28 RDI: fffff52000000f24 RBP: ffffffff8a8ced00 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff815e38ce R11: 0000000000000000 R12: 0000000000003f00 R13: ffffc90000007a28 R14: 0000000000003f00 R15: ffff88801a16a0b6 FS: 00005555566c9300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffdea19a960 CR3: 000000001b1e8000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: veth_xdp_rcv_skb+0x691/0x1ba0 drivers/net/veth.c:804 veth_xdp_rcv+0x3ac/0x810 drivers/net/veth.c:881 veth_poll+0x134/0x850 drivers/net/veth.c:913 __napi_poll+0xaf/0x440 net/core/dev.c:7010 napi_poll net/core/dev.c:7077 [inline] net_rx_action+0x801/0xb40 net/core/dev.c:7164 __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:finish_task_switch.isra.0+0x323/0xb80 kernel/sched/core.c:4814 Code: 23 8a e8 07 85 c0 75 02 0f 0b 48 85 db 0f 85 25 01 00 00 4c 89 f7 e8 fc f7 ff ff e8 27 cd 2c 00 fb 65 48 8b 1c 25 40 f0 01 00 <48> 8d bb 40 15 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 RSP: 0018:ffffc90002c5fab0 EFLAGS: 00000202 RAX: 00000000000b2f01 RBX: ffff88801f4b3900 RCX: 1ffffffff1add1c9 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc90002c5faf8 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff817d1468 R11: 0000000000000001 R12: ffff8880b9c32798 R13: ffff88801d20d580 R14: ffff8880b9c31a40 R15: ffff8880b9c32478 context_switch kernel/sched/core.c:4943 [inline] __schedule+0xb4c/0x5960 kernel/sched/core.c:6287 schedule+0xd3/0x270 kernel/sched/core.c:6366 freezable_schedule include/linux/freezer.h:172 [inline] do_nanosleep+0x24e/0x690 kernel/time/hrtimer.c:2044 hrtimer_nanosleep+0x1f9/0x4a0 kernel/time/hrtimer.c:2097 common_nsleep+0xa2/0xc0 kernel/time/posix-timers.c:1227 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1267 [inline] __se_sys_clock_nanosleep kernel/time/posix-timers.c:1245 [inline] __x64_sys_clock_nanosleep+0x2f4/0x430 kernel/time/posix-timers.c:1245 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7efcadc46781 Code: 24 0c 89 3c 24 48 89 4c 24 18 e8 4a 97 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 8b 74 24 0c 8b 3c 24 b8 e6 00 00 00 0f 05 <44> 89 c7 48 89 04 24 e8 83 97 ff ff 48 8b 04 24 eb 97 66 2e 0f 1f RSP: 002b:00007ffdea093080 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6 RAX: ffffffffffffffda RBX: 000000000007f7cb RCX: 00007efcadc46781 RDX: 00007ffdea0930c0 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00000000000002ba R08: 0000000000000000 R09: 00007ffdea196080 R10: 0000000000000000 R11: 0000000000000293 R12: 00007ffdea093114 R13: 00007ffdea093170 R14: 00000000000000e8 R15: 00007ffdea093150 ---------------- Code disassembly (best guess): 0: 23 8a e8 07 85 c0 and -0x3f7af818(%rdx),%ecx 6: 75 02 jne 0xa 8: 0f 0b ud2 a: 48 85 db test %rbx,%rbx d: 0f 85 25 01 00 00 jne 0x138 13: 4c 89 f7 mov %r14,%rdi 16: e8 fc f7 ff ff callq 0xfffff817 1b: e8 27 cd 2c 00 callq 0x2ccd47 20: fb sti 21: 65 48 8b 1c 25 40 f0 mov %gs:0x1f040,%rbx 28: 01 00 * 2a: 48 8d bb 40 15 00 00 lea 0x1540(%rbx),%rdi <-- trapping instruction 31: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 38: fc ff df 3b: 48 89 fa mov %rdi,%rdx 3e: 48 rex.W 3f: c1 .byte 0xc1