Warning: Permanently added '10.128.0.228' (ECDSA) to the list of known hosts. executing program [ 40.421362][ T5972] ------------[ cut here ]------------ [ 40.422540][ T5972] Too BIG xdp->frame_sz = 131072 [ 40.424206][ T5972] WARNING: CPU: 0 PID: 5972 at net/core/filter.c:4120 bpf_xdp_adjust_tail+0x228/0x230 [ 40.426252][ T5972] Modules linked in: [ 40.427028][ T5972] CPU: 0 PID: 5972 Comm: syz-executor310 Not tainted 6.4.0-rc5-syzkaller-g177239177378 #0 [ 40.429102][ T5972] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 [ 40.431151][ T5972] pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 40.432662][ T5972] pc : bpf_xdp_adjust_tail+0x228/0x230 [ 40.433794][ T5972] lr : bpf_xdp_adjust_tail+0x224/0x230 [ 40.434897][ T5972] sp : ffff8000967774b0 [ 40.435785][ T5972] x29: ffff8000967774b0 x28: ffff0000db3efeef x27: 1ffff00012ceeee1 [ 40.437477][ T5972] x26: dfff800000000000 x25: ffff800096777718 x24: 0000000000000000 [ 40.439144][ T5972] x23: 0000000000020000 x22: ffff0000db3efeef x21: ffff800096777700 [ 40.440837][ T5972] x20: ffff800096777708 x19: ffff800090b05000 x18: ffff800096776980 [ 40.442508][ T5972] x17: 0000000000000000 x16: ffff80008a388eb0 x15: 0000000000000202 [ 40.444218][ T5972] x14: 0000000000000000 x13: 0000000000000001 x12: 0000000000000001 [ 40.445823][ T5972] x11: 0000000000000200 x10: 0000000000000000 x9 : 00815fff2d341900 [ 40.447572][ T5972] x8 : 00815fff2d341900 x7 : 0000000000000001 x6 : 0000000000000001 [ 40.449210][ T5972] x5 : ffff800096776d98 x4 : ffff80008df9ee80 x3 : ffff80008035d5ec [ 40.450979][ T5972] x2 : 0000000000000001 x1 : 0000000100000200 x0 : ffffffffffffffea [ 40.452752][ T5972] Call trace: [ 40.453390][ T5972] bpf_xdp_adjust_tail+0x228/0x230 [ 40.454397][ T5972] bpf_prog_4add87e5301a4105+0x50/0x80 [ 40.455552][ T5972] bpf_dispatcher_xdp_func+0x30/0x44 [ 40.456628][ T5972] bpf_prog_run_generic_xdp+0x428/0xf40 [ 40.457788][ T5972] do_xdp_generic+0x400/0x8c8 [ 40.458713][ T5972] tun_get_user+0x1d24/0x35e0 [ 40.459700][ T5972] tun_chr_write_iter+0xfc/0x204 [ 40.460670][ T5972] vfs_write+0x618/0x918 [ 40.461554][ T5972] ksys_write+0x15c/0x26c [ 40.462414][ T5972] __arm64_sys_write+0x7c/0x90 [ 40.463388][ T5972] invoke_syscall+0x98/0x2c0 [ 40.464327][ T5972] el0_svc_common+0x138/0x244 [ 40.465335][ T5972] do_el0_svc+0x64/0x198 [ 40.466248][ T5972] el0_svc+0x4c/0x160 [ 40.467083][ T5972] el0t_64_sync_handler+0x84/0xfc [ 40.468077][ T5972] el0t_64_sync+0x190/0x194 [ 40.469067][ T5972] irq event stamp: 15309 [ 40.470015][ T5972] hardirqs last enabled at (15308): [] __up_console_sem+0x60/0xb4 [ 40.471991][ T5972] hardirqs last disabled at (15309): [] el1_dbg+0x24/0x80 [ 40.473801][ T5972] softirqs last enabled at (15134): [] bpf_link_settle+0x80/0x148 [ 40.475766][ T5972] softirqs last disabled at (15244): [] local_bh_disable+0x10/0x34 [ 40.477936][ T5972] ---[ end trace 0000000000000000 ]--- [ 40.479161][ T5972] Illegal XDP return value 4294967274 on prog (id 1) dev syz_tun, expect packet loss!