Warning: Permanently added '[localhost]:60923' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 91.761751][ T3072] ------------[ cut here ]------------ [ 91.762162][ T3072] Too BIG xdp->frame_sz = 131072 [ 91.762956][ T3072] WARNING: CPU: 0 PID: 3072 at net/core/filter.c:4121 bpf_xdp_adjust_tail+0x184/0x2e0 [ 91.767050][ T3072] Modules linked in: [ 91.767831][ T3072] CPU: 0 PID: 3072 Comm: syz-executor323 Not tainted 6.4.0-syzkaller-04247-g3a8a670eeeaa #0 [ 91.768421][ T3072] Hardware name: linux,dummy-virt (DT) [ 91.769384][ T3072] pstate: 60400009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 91.770030][ T3072] pc : bpf_xdp_adjust_tail+0x184/0x2e0 [ 91.770322][ T3072] lr : bpf_xdp_adjust_tail+0x184/0x2e0 [ 91.770613][ T3072] sp : ffff800082b23a40 [ 91.770894][ T3072] x29: ffff800082b23a40 x28: ffff800082b23d50 x27: ffff800082b23a90 [ 91.771649][ T3072] x26: 0000000000000000 x25: ffff800082b23a90 x24: ffffffffffffffea [ 91.772139][ T3072] x23: f0ff0000093dfec0 x22: f0ff0000093cfeef x21: f0ff0000093cfeef [ 91.772773][ T3072] x20: 0000000000000000 x19: ffff800082b23b90 x18: 00000000fffffffb [ 91.773309][ T3072] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000020 [ 91.773759][ T3072] x14: ffff80008240b048 x13: 000000000000083a x12: 00000000000002be [ 91.774334][ T3072] x11: fffffffffffcae58 x10: ffff8000824bb048 x9 : 00000000ffffe000 [ 91.774996][ T3072] x8 : ffff80008240b048 x7 : ffff8000824bb048 x6 : 0000000000000000 [ 91.775452][ T3072] x5 : ffff00007f9b8cc8 x4 : 0000000000000000 x3 : ffff7ffffd5f8000 [ 91.775974][ T3072] x2 : 0000000000000000 x1 : 0000000000000000 x0 : f2ff000005fa8000 [ 91.776687][ T3072] Call trace: [ 91.777015][ T3072] bpf_xdp_adjust_tail+0x184/0x2e0 [ 91.777405][ T3072] bpf_prog_4add87e5301a4105+0x48/0x78 [ 91.778057][ T3072] bpf_dispatcher_xdp_func+0x10/0x1c [ 91.778388][ T3072] bpf_prog_run_generic_xdp+0xec/0x3c0 [ 91.778693][ T3072] do_xdp_generic.part.0+0xc0/0x1d4 [ 91.778974][ T3072] do_xdp_generic+0x14/0x28 [ 91.779426][ T3072] tun_get_user+0x584/0xf24 [ 91.779733][ T3072] tun_chr_write_iter+0x5c/0xe8 [ 91.780010][ T3072] vfs_write+0x2d0/0x39c [ 91.780274][ T3072] ksys_write+0x68/0xf4 [ 91.780548][ T3072] __arm64_sys_write+0x1c/0x28 [ 91.780852][ T3072] invoke_syscall+0x48/0x114 [ 91.781218][ T3072] el0_svc_common.constprop.0+0x44/0xe4 [ 91.781528][ T3072] do_el0_svc+0x38/0xa4 [ 91.781783][ T3072] el0_svc+0x2c/0xb0 [ 91.782039][ T3072] el0t_64_sync_handler+0xc0/0xc4 [ 91.782344][ T3072] el0t_64_sync+0x19c/0x1a0 [ 91.782942][ T3072] ---[ end trace 0000000000000000 ]--- [ 91.783919][ T3072] Illegal XDP return value 4294967274 on prog (id 1) dev syz_tun, expect packet loss! executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program VM DIAGNOSIS: 17:44:44 Registers: info registers vcpu 0 PC=ffff8000818696f4 X00=ffff800082b23076 X01=0000000000000002 X02=0000000000003736 X03=ffff800081ccc868 X04=000000000000004c X05=0000000000000064 X06=000000000000002e X07=0000000000004218 X08=00000000000bb9a5 X09=ffff800082b23170 X10=000000000000002e X11=fffffffffffcaf70 X12=ffff800082b2326f X13=ffff800102b23267 X14=ffffffffffffffff X15=0000000000000010 X16=302e342e36206465 X17=6c6c616b7a79732d X18=0000000000000006 X19=00000000000bb9a5 X20=0000000000000000 X21=0000000000000000 X22=000000000000000a X23=0000000000000000 X24=0000000000000000 X25=0000000000000010 X26=ffff800082b23070 X27=ffff800081fcebf3 X28=ffff800082b2326f X29=ffff800082b23020 X30=ffff8000818696f4 SP=ffff800082b23020 PSTATE=224003c9 --C- EL2h BTYPE=0 FPCR=00000000 FPSR=00000000 P00=0000 P01=0000 P02=0000 P03=0000 P04=0000 P05=0000 P06=0000 P07=0000 P08=0000 P09=0000 P10=0000 P11=0000 P12=0000 P13=0000 P14=0000 P15=0000 FFR=0000 Z00=2525252525252525:2525252525252525 Z01=65732f636f72702f:0000000030303031 Z02=6a64615f65726f63:735f6d6f6f2f666c Z03=0000000000000000:ffffffff00000000 Z04=0000000000000000:0000000000000000 Z05=0000000000000000:4010040100000000 Z06=0000000000000000:0000000000000000 Z07=4010040140100401:4010040140100401 Z08=0000000000000000:0000000000000000 Z09=0000000000000000:0000000000000000 Z10=0000000000000000:0000000000000000 Z11=0000000000000000:0000000000000000 Z12=0000000000000000:0000000000000000 Z13=0000000000000000:0000000000000000 Z14=0000000000000000:0000000000000000 Z15=0000000000000000:0000000000000000 Z16=0000000000005500:0000000000005500 Z17=0000ff0000000000:0000ff0000000000 Z18=0000000000000000:0000000000000000 Z19=0000000000000000:0000000000000000 Z20=0000000000000000:0000000000000000 Z21=0000000000000000:0000000000000000 Z22=0000000000000000:0000000000000000 Z23=0000000000000000:0000000000000000 Z24=0000000000000000:0000000000000000 Z25=0000000000000000:0000000000000000 Z26=0000000000000000:0000000000000000 Z27=0000000000000000:0000000000000000 Z28=0000000000000000:0000000000000000 Z29=0000000000000000:0000000000000000 Z30=0000000000000000:0000000000000000 Z31=0000000000000000:0000000000000000 info registers vcpu 1 PC=0000ffff9e681194 X00=0000000000000000 X01=0000ffffdb9dcbf4 X02=0000000040000001 X03=0000000000000000 X04=0000aaaaaac19000 X05=0000000008000000 X06=000000000000005b X07=0000000000004372 X08=0000000000000104 X09=0000000000004372 X10=0000000000000017 X11=0014904840000000 X12=00000001573e099c X13=000000007fffffff X14=ffffffffffffffff X15=0000000000000038 X16=0000ffff9e6fb008 X17=0000ffff9e67ea80 X18=0000000000000000 X19=ffffffffffffffff X20=00000000000165fa X21=0000ffff9e6fb000 X22=0000aaaaaac19700 X23=0000ffffdb9dcc10 X24=0000000040000001 X25=0000ffffdb9dcbf4 X26=0000ffff9e6fd000 X27=0000ffff9e6ff090 X28=0000ffff9e6ff0a0 X29=0000ffffdb9dcb60 X30=0000ffff9e6675d0 SP=0000ffffdb9dcb60 PSTATE=80000000 N--- EL0t BTYPE=0 FPCR=00000000 FPSR=00000000 P00=0000 P01=0000 P02=0000 P03=0000 P04=0000 P05=0000 P06=0000 P07=0000 P08=0000 P09=0000 P10=0000 P11=0000 P12=0000 P13=0000 P14=0000 P15=0000 FFR=0000 Z00=0000000000000000:0000000000000000 Z01=203d3e206469736e:0000000000000000 Z02=47203c206469736e:0000000000000030 Z03=0000000000000000:ffffffffffffffff Z04=0000000000000000:ffffffffffffff00 Z05=0000000000000000:4010040140100401 Z06=0000000000000000:4010040140100400 Z07=4010040140100401:4010040140100401 Z08=0000000000000000:0000000000000000 Z09=0000000000000000:0000000000000000 Z10=0000000000000000:0000000000000000 Z11=0000000000000000:0000000000000000 Z12=0000000000000000:0000000000000000 Z13=0000000000000000:0000000000000000 Z14=0000000000000000:0000000000000000 Z15=0000000000000000:0000000000000000 Z16=0000555400005555:0000555400005555 Z17=0000ff0000000000:0000ff0000000000 Z18=0000000000000000:0000000000000000 Z19=0000000000000000:0000000000000000 Z20=0000000000000000:0000000000000000 Z21=0000000000000000:0000000000000000 Z22=0000000000000000:0000000000000000 Z23=0000000000000000:0000000000000000 Z24=0000000000000000:0000000000000000 Z25=0000000000000000:0000000000000000 Z26=0000000000000000:0000000000000000 Z27=0000000000000000:0000000000000000 Z28=0000000000000000:0000000000000000 Z29=0000000000000000:0000000000000000 Z30=0000000000000000:0000000000000000 Z31=0000000000000000:0000000000000000