[ 19.121185][ T5528] 8021q: adding VLAN 0 to HW filter on device bond0 [ 19.125263][ T5528] eql: remember to turn off Van-Jacobson compression on your slave devices [ 19.186202][ T39] gvnic 0000:00:00.0 enp0s0: Device link is up. [ 19.191327][ T5439] IPv6: ADDRCONF(NETDEV_CHANGE): enp0s0: link becomes ready Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.165' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 39.185473][ T5943] ------------[ cut here ]------------ [ 39.186713][ T5943] Too BIG xdp->frame_sz = 131072 [ 39.188263][ T5943] WARNING: CPU: 1 PID: 5943 at net/core/filter.c:4094 bpf_xdp_adjust_tail+0x228/0x230 [ 39.190461][ T5943] Modules linked in: [ 39.191356][ T5943] CPU: 1 PID: 5943 Comm: syz-executor125 Not tainted 6.3.0-rc1-syzkaller-gfe15c26ee26e #0 [ 39.193621][ T5943] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 [ 39.195989][ T5943] pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 39.197805][ T5943] pc : bpf_xdp_adjust_tail+0x228/0x230 [ 39.199142][ T5943] lr : bpf_xdp_adjust_tail+0x224/0x230 [ 39.200419][ T5943] sp : ffff80001e2374b0 [ 39.201395][ T5943] x29: ffff80001e2374b0 x28: ffff0000d846feef x27: 1ffff00003c46ee1 [ 39.203332][ T5943] x26: dfff800000000000 x25: ffff80001e237718 x24: 0000000000000000 [ 39.205225][ T5943] x23: 0000000000020000 x22: ffff0000d846feef x21: ffff80001e237700 [ 39.207092][ T5943] x20: ffff80001e237708 x19: ffff8000186ef000 x18: ffff80001e2369a0 [ 39.209008][ T5943] x17: 0000000000000000 x16: ffff80001246250c x15: 0000000000000000 [ 39.210954][ T5943] x14: 0000000000000000 x13: 0000000000000001 x12: 0000000000000001 [ 39.212879][ T5943] x11: ff808000081bd230 x10: 0000000000000000 x9 : 19870ee59af00c00 [ 39.214761][ T5943] x8 : 19870ee59af00c00 x7 : 0000000000000001 x6 : 0000000000000001 [ 39.216697][ T5943] x5 : ffff80001e236d98 x4 : ffff800015dc52c0 x3 : ffff80000859c514 [ 39.218592][ T5943] x2 : 0000000000000001 x1 : 0000000100000200 x0 : ffffffffffffffea [ 39.220547][ T5943] Call trace: [ 39.221330][ T5943] bpf_xdp_adjust_tail+0x228/0x230 [ 39.222538][ T5943] bpf_prog_4add87e5301a4105+0x50/0x80 [ 39.223844][ T5943] bpf_dispatcher_xdp_func+0x30/0x44 [ 39.225111][ T5943] bpf_prog_run_generic_xdp+0x428/0xf44 [ 39.226414][ T5943] do_xdp_generic+0x348/0x634 [ 39.227513][ T5943] tun_get_user+0x1e44/0x3820 [ 39.228625][ T5943] tun_chr_write_iter+0xfc/0x204 [ 39.229808][ T5943] vfs_write+0x610/0x914 [ 39.230818][ T5943] ksys_write+0x15c/0x26c [ 39.231893][ T5943] __arm64_sys_write+0x7c/0x90 [ 39.233060][ T5943] invoke_syscall+0x98/0x2c0 [ 39.234128][ T5943] el0_svc_common+0x138/0x258 [ 39.235249][ T5943] do_el0_svc+0x64/0x198 [ 39.236250][ T5943] el0_svc+0x58/0x168 [ 39.237191][ T5943] el0t_64_sync_handler+0x84/0xf0 [ 39.238383][ T5943] el0t_64_sync+0x190/0x194 [ 39.239473][ T5943] irq event stamp: 15225 [ 39.240452][ T5943] hardirqs last enabled at (15224): [] __up_console_sem+0x60/0xb4 [ 39.242701][ T5943] hardirqs last disabled at (15225): [] el1_dbg+0x24/0x80 [ 39.244729][ T5943] softirqs last enabled at (15050): [] bpf_link_settle+0x80/0x148 [ 39.246781][ T5943] softirqs last disabled at (15160): [] local_bh_disable+0x10/0x34 [ 39.249121][ T5943] ---[ end trace 0000000000000000 ]--- [ 39.250494][ T5943] Illegal XDP return value 4294967274 on prog (id 1) dev syz_tun, expect packet loss!