Warning: Permanently added '10.128.0.195' (ECDSA) to the list of known hosts. executing program [ 38.234097][ T4308] ------------[ cut here ]------------ [ 38.235495][ T4308] Too BIG xdp->frame_sz = 131072 [ 38.237070][ T4308] WARNING: CPU: 1 PID: 4308 at net/core/filter.c:4069 bpf_xdp_adjust_tail+0x228/0x230 [ 38.239305][ T4308] Modules linked in: [ 38.240218][ T4308] CPU: 1 PID: 4308 Comm: syz-executor402 Not tainted 6.1.15-syzkaller #0 [ 38.242132][ T4308] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 [ 38.244436][ T4308] pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 38.246219][ T4308] pc : bpf_xdp_adjust_tail+0x228/0x230 [ 38.247489][ T4308] lr : bpf_xdp_adjust_tail+0x224/0x230 [ 38.248766][ T4308] sp : ffff80001dc374b0 [ 38.249735][ T4308] x29: ffff80001dc374b0 x28: ffff0000dc7afeef x27: 1ffff00003b86ee1 [ 38.251590][ T4308] x26: dfff800000000000 x25: ffff80001dc37718 x24: 0000000000000000 [ 38.253401][ T4308] x23: 0000000000020000 x22: ffff0000dc7afeef x21: ffff80001dc37700 [ 38.255148][ T4308] x20: ffff80001dc37708 x19: ffff800018061000 x18: ffff80001dc368c0 [ 38.257029][ T4308] x17: 0000000000000000 x16: ffff8000122508ac x15: 0000000000000000 [ 38.258942][ T4308] x14: 0000000000000000 x13: 0000000000000001 x12: 0000000000000001 [ 38.260737][ T4308] x11: ff80800008349608 x10: 0000000000000000 x9 : 42f117d643cd1200 [ 38.262603][ T4308] x8 : 42f117d643cd1200 x7 : 0000000000000001 x6 : 0000000000000001 [ 38.264349][ T4308] x5 : ffff80001dc36db8 x4 : ffff800015823840 x3 : ffff8000085890fc [ 38.266151][ T4308] x2 : 0000000000000001 x1 : 0000000100000200 x0 : ffffffffffffffea [ 38.268040][ T4308] Call trace: [ 38.268784][ T4308] bpf_xdp_adjust_tail+0x228/0x230 [ 38.269938][ T4308] bpf_prog_4add87e5301a4105+0x50/0x80 [ 38.271121][ T4308] bpf_dispatcher_xdp_func+0x30/0x44 [ 38.272379][ T4308] bpf_prog_run_generic_xdp+0x428/0xf44 [ 38.273699][ T4308] do_xdp_generic+0x348/0x634 [ 38.274737][ T4308] tun_get_user+0x2070/0x3ac8 [ 38.275800][ T4308] tun_chr_write_iter+0xfc/0x204 [ 38.277050][ T4308] vfs_write+0x610/0x914 [ 38.278060][ T4308] ksys_write+0x15c/0x26c [ 38.279043][ T4308] __arm64_sys_write+0x7c/0x90 [ 38.280153][ T4308] invoke_syscall+0x98/0x2c0 [ 38.281181][ T4308] el0_svc_common+0x138/0x258 [ 38.282298][ T4308] do_el0_svc+0x64/0x218 [ 38.283244][ T4308] el0_svc+0x58/0x168 [ 38.284169][ T4308] el0t_64_sync_handler+0x84/0xf0 [ 38.285318][ T4308] el0t_64_sync+0x18c/0x190 [ 38.286496][ T4308] irq event stamp: 15663 [ 38.287518][ T4308] hardirqs last enabled at (15662): [] __up_console_sem+0xb4/0x100 [ 38.289645][ T4308] hardirqs last disabled at (15663): [] el1_dbg+0x24/0x80 [ 38.291563][ T4308] softirqs last enabled at (15490): [] bpf_link_settle+0x80/0x148 [ 38.293771][ T4308] softirqs last disabled at (15600): [] local_bh_disable+0x10/0x34 [ 38.295845][ T4308] ---[ end trace 0000000000000000 ]--- [ 38.297190][ T4308] Illegal XDP return value 4294967274 on prog (id 1) dev syz_tun, expect packet loss!