Warning: Permanently added '10.128.10.6' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 38.642199][ T3962] ------------[ cut here ]------------ [ 38.643476][ T3962] Too BIG xdp->frame_sz = 131072 [ 38.644978][ T3962] WARNING: CPU: 0 PID: 3962 at net/core/filter.c:3848 bpf_xdp_adjust_tail+0x1a8/0x1b0 [ 38.647078][ T3962] Modules linked in: [ 38.647865][ T3962] CPU: 0 PID: 3962 Comm: syz-executor352 Not tainted 5.15.117-syzkaller #0 [ 38.649612][ T3962] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 [ 38.651554][ T3962] pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 38.653364][ T3962] pc : bpf_xdp_adjust_tail+0x1a8/0x1b0 [ 38.654473][ T3962] lr : bpf_xdp_adjust_tail+0x1a4/0x1b0 [ 38.655561][ T3962] sp : ffff80001a307470 [ 38.656464][ T3962] x29: ffff80001a307470 x28: ffff0000dcc7fec0 x27: 1ffff00003460ed9 [ 38.658003][ T3962] x26: ffff0000dcc6feef x25: dfff800000000000 x24: 0000000000020000 [ 38.659824][ T3962] x23: ffff0000dcc6feef x22: 0000000000000000 x21: ffff80001a3076c0 [ 38.661504][ T3962] x20: ffff80001a3076c8 x19: ffff800016cf0000 x18: 0000000000000201 [ 38.663183][ T3962] x17: ff80800008335ea8 x16: ffff8000119534fc x15: ffff800008335ea8 [ 38.664851][ T3962] x14: 00000000ffffffff x13: ffffffffffffffff x12: 0000000000000000 [ 38.666507][ T3962] x11: ff8080000832d950 x10: 0000000000000000 x9 : 3395863461cb2500 [ 38.668199][ T3962] x8 : 3395863461cb2500 x7 : 0000000000000001 x6 : 0000000000000001 [ 38.669827][ T3962] x5 : ffff80001a306bd8 x4 : ffff8000149cfca0 x3 : ffff80000854dc88 [ 38.671531][ T3962] x2 : 0000000000000001 x1 : 0000000100000200 x0 : ffffffffffffffea [ 38.673208][ T3962] Call trace: [ 38.673856][ T3962] bpf_xdp_adjust_tail+0x1a8/0x1b0 [ 38.674881][ T3962] bpf_prog_4add87e5301a4105+0x3c/0xac8 [ 38.676009][ T3962] bpf_dispatcher_xdp_func+0x30/0x44 [ 38.677198][ T3962] bpf_prog_run_generic_xdp+0x3e0/0xea8 [ 38.678336][ T3962] do_xdp_generic+0x400/0x8a8 [ 38.679319][ T3962] tun_get_user+0x1da4/0x3774 [ 38.680383][ T3962] tun_chr_write_iter+0xfc/0x20c [ 38.681475][ T3962] vfs_write+0x87c/0xb3c [ 38.682330][ T3962] ksys_write+0x15c/0x26c [ 38.683146][ T3962] __arm64_sys_write+0x7c/0x90 [ 38.684141][ T3962] invoke_syscall+0x98/0x2b8 [ 38.685128][ T3962] el0_svc_common+0x138/0x258 [ 38.686138][ T3962] do_el0_svc+0x58/0x14c [ 38.686967][ T3962] el0_svc+0x7c/0x1f0 [ 38.687809][ T3962] el0t_64_sync_handler+0x84/0xe4 [ 38.688858][ T3962] el0t_64_sync+0x1a0/0x1a4 [ 38.689823][ T3962] irq event stamp: 14081 [ 38.690700][ T3962] hardirqs last enabled at (14080): [] __up_console_sem+0xb4/0x100 [ 38.692759][ T3962] hardirqs last disabled at (14081): [] el1_dbg+0x24/0x80 [ 38.694506][ T3962] softirqs last enabled at (13910): [] bpf_link_settle+0x80/0x148 [ 38.696485][ T3962] softirqs last disabled at (14020): [] local_bh_disable+0x10/0x34 [ 38.698424][ T3962] ---[ end trace 8786afb4a444f6ee ]--- [ 38.699531][ T3962] Illegal XDP return value 4294967274, expect packet loss!