Warning: Permanently added '10.128.0.102' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 39.756359][ T5945] ------------[ cut here ]------------ [ 39.757739][ T5945] Too BIG xdp->frame_sz = 131072 [ 39.759290][ T5945] WARNING: CPU: 0 PID: 5945 at net/core/filter.c:4094 bpf_xdp_adjust_tail+0x228/0x230 [ 39.761444][ T5945] Modules linked in: [ 39.762409][ T5945] CPU: 0 PID: 5945 Comm: syz-executor424 Not tainted 6.3.0-rc1-syzkaller-gfe15c26ee26e #0 [ 39.764670][ T5945] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 [ 39.767001][ T5945] pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 39.768984][ T5945] pc : bpf_xdp_adjust_tail+0x228/0x230 [ 39.770325][ T5945] lr : bpf_xdp_adjust_tail+0x224/0x230 [ 39.771653][ T5945] sp : ffff80001e5074b0 [ 39.772606][ T5945] x29: ffff80001e5074b0 x28: ffff0000d990feef x27: 1ffff00003ca0ee1 [ 39.774427][ T5945] x26: dfff800000000000 x25: ffff80001e507718 x24: 0000000000000000 [ 39.776317][ T5945] x23: 0000000000020000 x22: ffff0000d990feef x21: ffff80001e507700 [ 39.778194][ T5945] x20: ffff80001e507708 x19: ffff8000186ef000 x18: ffff80001e5069a0 [ 39.780088][ T5945] x17: 0000000000000000 x16: ffff80001246250c x15: 0000000000000000 [ 39.782032][ T5945] x14: 0000000000000000 x13: 0000000000000001 x12: 0000000000000001 [ 39.783886][ T5945] x11: ff808000081bd230 x10: 0000000000000000 x9 : 2b4fb7046d501e00 [ 39.785767][ T5945] x8 : 2b4fb7046d501e00 x7 : 0000000000000001 x6 : 0000000000000001 [ 39.787529][ T5945] x5 : ffff80001e506d98 x4 : ffff800015dc52c0 x3 : ffff80000859c514 [ 39.789388][ T5945] x2 : 0000000000000001 x1 : 0000000100000200 x0 : ffffffffffffffea [ 39.791245][ T5945] Call trace: [ 39.792042][ T5945] bpf_xdp_adjust_tail+0x228/0x230 [ 39.793257][ T5945] bpf_prog_4add87e5301a4105+0x50/0x80 [ 39.794579][ T5945] bpf_dispatcher_xdp_func+0x30/0x44 [ 39.795880][ T5945] bpf_prog_run_generic_xdp+0x428/0xf44 [ 39.797163][ T5945] do_xdp_generic+0x348/0x634 [ 39.798293][ T5945] tun_get_user+0x1e44/0x3820 [ 39.799356][ T5945] tun_chr_write_iter+0xfc/0x204 [ 39.800516][ T5945] vfs_write+0x610/0x914 [ 39.801504][ T5945] ksys_write+0x15c/0x26c [ 39.802510][ T5945] __arm64_sys_write+0x7c/0x90 [ 39.803641][ T5945] invoke_syscall+0x98/0x2c0 [ 39.804686][ T5945] el0_svc_common+0x138/0x258 [ 39.805797][ T5945] do_el0_svc+0x64/0x198 [ 39.806810][ T5945] el0_svc+0x58/0x168 [ 39.807777][ T5945] el0t_64_sync_handler+0x84/0xf0 [ 39.808908][ T5945] el0t_64_sync+0x190/0x194 [ 39.809940][ T5945] irq event stamp: 15185 [ 39.810944][ T5945] hardirqs last enabled at (15184): [] __up_console_sem+0x60/0xb4 [ 39.813088][ T5945] hardirqs last disabled at (15185): [] el1_dbg+0x24/0x80 [ 39.815117][ T5945] softirqs last enabled at (15012): [] bpf_link_settle+0x80/0x148 [ 39.817289][ T5945] softirqs last disabled at (15122): [] local_bh_disable+0x10/0x34 [ 39.819454][ T5945] ---[ end trace 0000000000000000 ]--- [ 39.821099][ T5945] Illegal XDP return value 4294967274 on prog (id 1) dev syz_tun, expect packet loss!