last executing test programs: 622.350377ms ago: executing program 1 (id=2): syz_emit_ethernet(0x3b6, &(0x7f0000000800)={@local, @remote, @void, {@ipv6={0x86dd, @icmpv6={0x0, 0x6, "cedd00", 0x380, 0x3a, 0xff, @remote, @mcast2, {[], @ndisc_ra={0x86, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, [{0x3, 0xa, "a78ce54006598080a8030037004023493b87aafaffffffffffffff23732472eefa45ad96579269748e254c1e4a8a8b3f0ab0c430d3be27df3e34066d42ca0a5c15b37adac15084dbaf736b41e5af2502"}, {0x0, 0x1, "000000050000000026000400"}, {0x3, 0x18, "fe906d26efe39393fe08f73eabc5977b1190a3a6ad8338f1511cdd10c35d8f6de79fc7fd175f75649fa368a32c829af02d7f44d92324a7051e460a13ddde25a5b85b9d930914625d8a049b4cf0d129806a610ad8477a2499a9a0527f75b655a6653d0363a979acf93f88eea07d68423e90280409de1657275f716a2bf2915d1783e8eb477b0d1170f0ecbdef4c23e1b76e9ab3d2fbe4b34438d2a77577edd0ebed9682b851b380ae0cab282af9d7ebe668177704c5fd4698c934de4731f3f61effc978"}, {0x0, 0x1d, "06aa85616177c41bc943afcb84619755403946b0730a18d5c38cf7dcad830f2dc8674b87ba8b58f81ece27975cc39e595e9af90b4fe92a38d25551c2d9ebfc5dfc5a2a501b7e483de3f808895c5f4a1a2367bc591dd8b094822ff0dea07c9a1f643c822a18b79f7c5eba31fb68b2d734a6671e27182aee96f24a4a5cf390dab23b500b0c0272479611e4f7f4299ec4d926d443367b105185e6ecd9602ba95392343e9bbd047ef6bc1ba42399907ccd0a562db212baa39eb8164e240069f656d3a05fecf894222a141123f5ac010000000000000090aa235a670670ffc5dc49dfb58d00000000000000"}, {0x0, 0xb, "17dcea46805d4809c20547406b18901b0aeff04c0300f3c75dc2d227a83b89483b1084743475671545e65eb2e9ac946a3f0e2bc4619f91394c02bcfbbb7d71138537d68e2d2c6393a9f3becd1a9f51a948b5b303f4f019"}, {0x21, 0x7, "b8a3e100908f61640000000200fe80ffff00000000000000ff0bc0fe00000000008879e66485201a0015ca83747357a027450004000000"}, {0x0, 0x14, "5e14f0e74d2d42cfb3f27fafb60845f90b6dfc2e37bc87c6905bbc94d33e1ea71a28105f543e868a8a53b360a9d33e2b1e26eb1d18065daa7628cf9ef083611c9f6ae2e1eb3d8bf9c6ab2642c4808288e62afbf03269f1f98aea6ab3beb5fdc5fdaabc2c676d8800871a6aa54155dea2d995cb22c9924e0ad38c6967052cc7786d779b8353aac33a57d79b05613a12328f61129017fb632dbf04542188b196e213408c"}, {0x0, 0x5, "d5170000dce9674a36da018dff16e70b8b14c4b7a94fe18e88605aa6be1a02a326a6bce65f81ed"}]}}}}}}, 0x0) 0s ago: executing program 0 (id=1): close_range(0xffffffffffffffff, 0xffffffffffffffff, 0x2) r0 = memfd_create(&(0x7f0000000380)='/dloop#\x00', 0x6) fallocate(r0, 0x0, 0x0, 0x401) kernel console output (not intermixed with test programs): Warning: Permanently added '[localhost]:64432' (ED25519) to the list of known hosts. syzkaller login: [ 388.007729][ T3182] cgroup: Unknown subsys name 'net' [ 388.902233][ T3182] cgroup: Unknown subsys name 'cpuset' [ 389.015080][ T3182] cgroup: Unknown subsys name 'rlimit' Setting up swapspace version 1, size = 127995904 bytes [ 450.939949][ T3182] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 557.905506][ T3194] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 558.053046][ T3194] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 562.476984][ T3196] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 562.578746][ T3196] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 571.719950][ T3194] hsr_slave_0: entered promiscuous mode [ 571.760182][ T3194] hsr_slave_1: entered promiscuous mode [ 575.369456][ T3196] hsr_slave_0: entered promiscuous mode [ 575.398736][ T3196] hsr_slave_1: entered promiscuous mode [ 575.433676][ T3196] debugfs: Directory 'hsr0' with parent 'hsr' already present! [ 575.436730][ T3196] Cannot create hsr debugfs directory [ 584.774703][ T3194] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 584.942749][ T3194] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 585.070731][ T3194] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 585.370410][ T3194] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 586.956208][ T3196] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 587.112477][ T3196] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 587.333966][ T3196] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 587.540824][ T3196] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 600.020953][ T3194] 8021q: adding VLAN 0 to HW filter on device bond0 [ 600.368066][ T3196] 8021q: adding VLAN 0 to HW filter on device bond0 [ 640.623889][ T3196] veth0_vlan: entered promiscuous mode [ 640.958035][ T3194] veth0_vlan: entered promiscuous mode [ 641.187012][ T3196] veth1_vlan: entered promiscuous mode [ 642.380282][ T3194] veth1_vlan: entered promiscuous mode [ 644.574515][ T3196] veth0_macvtap: entered promiscuous mode [ 644.894063][ T3196] veth1_macvtap: entered promiscuous mode [ 645.669719][ T3194] veth0_macvtap: entered promiscuous mode [ 646.086808][ T3194] veth1_macvtap: entered promiscuous mode [ 647.306556][ T3196] netdevsim netdevsim1 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 647.308465][ T3196] netdevsim netdevsim1 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 647.309640][ T3196] netdevsim netdevsim1 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 647.310801][ T3196] netdevsim netdevsim1 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 649.306692][ T3194] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 649.309254][ T3194] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 649.332620][ T3194] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 649.334914][ T3194] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 652.485768][ T3196] soft_limit_in_bytes is deprecated and will be removed. Please report your usecase to linux-mm@kvack.org if you depend on this functionality. [ 655.050916][ T3894] ------------[ cut here ]------------ [ 655.052636][ T3894] UBSAN: array-index-out-of-bounds in ./include/net/ipv6.h:616:34 [ 655.053926][ T3894] index 20 is out of range for type '__u8 [16]' [ 655.055993][ T3894] CPU: 0 UID: 0 PID: 3894 Comm: syz.1.2 Not tainted 6.16.0-rc1-syzkaller-gfda589c28604 #0 PREEMPT [ 655.056622][ T3894] Hardware name: riscv-virtio,qemu (DT) [ 655.057099][ T3894] Call Trace: [ 655.057399][ T3894] [] dump_backtrace+0x2e/0x3c [ 655.058796][ T3894] [] show_stack+0x30/0x3c [ 655.059059][ T3894] [] dump_stack_lvl+0x12e/0x1a6 [ 655.059449][ T3894] [] dump_stack+0x1c/0x24 [ 655.059787][ T3894] [] ubsan_epilogue+0x14/0x46 [ 655.060025][ T3894] [] __ubsan_handle_out_of_bounds+0xf6/0xf8 [ 655.060315][ T3894] [] ip6_route_info_create+0x8f8/0x96e [ 655.060635][ T3894] [] ip6_route_add+0x2a/0x1aa [ 655.061030][ T3894] [] addrconf_prefix_route+0x2c4/0x4e8 [ 655.061396][ T3894] [] addrconf_prefix_rcv+0x1720/0x1e62 [ 655.061682][ T3894] [] ndisc_router_discovery+0x1a06/0x3504 [ 655.061992][ T3894] [] ndisc_rcv+0x500/0x600 [ 655.062268][ T3894] [] icmpv6_rcv+0x145e/0x1e0a [ 655.062585][ T3894] [] ip6_protocol_deliver_rcu+0x18a/0x1976 [ 655.062970][ T3894] [] ip6_input_finish+0xf4/0x174 [ 655.063362][ T3894] [] ip6_input+0x16a/0x70c [ 655.063678][ T3894] [] ip6_mc_input+0x5c8/0x1268 [ 655.064082][ T3894] [] ipv6_rcv+0x5ae/0x6e0 [ 655.064610][ T3894] [] __netif_receive_skb_one_core+0x106/0x16e [ 655.065212][ T3894] [] __netif_receive_skb+0x2c/0x144 [ 655.065681][ T3894] [] netif_receive_skb+0x1aa/0xbf2 [ 655.066044][ T3894] [] tun_rx_batched.isra.0+0x430/0x686 [ 655.066353][ T3894] [] tun_get_user+0x2952/0x3d6c [ 655.066704][ T3894] [] tun_chr_write_iter+0xc4/0x21c [ 655.067076][ T3894] [] vfs_write+0x56c/0xb12 [ 655.067399][ T3894] [] ksys_write+0x126/0x234 [ 655.067677][ T3894] [] __riscv_sys_write+0x6e/0xa0 [ 655.068003][ T3894] [] syscall_handler+0x94/0x118 [ 655.068286][ T3894] [] do_trap_ecall_u+0x396/0x530 [ 655.068653][ T3894] [] handle_exception+0x146/0x152 [ 655.086224][ T3894] ---[ end trace ]--- [ 655.087739][ T3894] Kernel panic - not syncing: UBSAN: panic_on_warn set ... [ 655.089025][ T3894] CPU: 0 UID: 0 PID: 3894 Comm: syz.1.2 Not tainted 6.16.0-rc1-syzkaller-gfda589c28604 #0 PREEMPT [ 655.089968][ T3894] Hardware name: riscv-virtio,qemu (DT) [ 655.090577][ T3894] Call Trace: [ 655.091160][ T3894] [] dump_backtrace+0x2e/0x3c [ 655.092177][ T3894] [] show_stack+0x30/0x3c [ 655.093040][ T3894] [] dump_stack_lvl+0x110/0x1a6 [ 655.093960][ T3894] [] dump_stack+0x1c/0x24 [ 655.094900][ T3894] [] panic+0x38c/0x86a [ 655.095711][ T3894] [] check_panic_on_warn+0xc0/0xe4 [ 655.096697][ T3894] [] ubsan_epilogue+0x3e/0x46 [ 655.097580][ T3894] [] __ubsan_handle_out_of_bounds+0xf6/0xf8 [ 655.098592][ T3894] [] ip6_route_info_create+0x8f8/0x96e [ 655.099503][ T3894] [] ip6_route_add+0x2a/0x1aa [ 655.100527][ T3894] [] addrconf_prefix_route+0x2c4/0x4e8 [ 655.101587][ T3894] [] addrconf_prefix_rcv+0x1720/0x1e62 [ 655.102488][ T3894] [] ndisc_router_discovery+0x1a06/0x3504 [ 655.103324][ T3894] [] ndisc_rcv+0x500/0x600 [ 655.104183][ T3894] [] icmpv6_rcv+0x145e/0x1e0a [ 655.105087][ T3894] [] ip6_protocol_deliver_rcu+0x18a/0x1976 [ 655.106056][ T3894] [] ip6_input_finish+0xf4/0x174 [ 655.106932][ T3894] [] ip6_input+0x16a/0x70c [ 655.107814][ T3894] [] ip6_mc_input+0x5c8/0x1268 [ 655.108962][ T3894] [] ipv6_rcv+0x5ae/0x6e0 [ 655.110426][ T3894] [] __netif_receive_skb_one_core+0x106/0x16e [ 655.112115][ T3894] [] __netif_receive_skb+0x2c/0x144 [ 655.113674][ T3894] [] netif_receive_skb+0x1aa/0xbf2 [ 655.115230][ T3894] [] tun_rx_batched.isra.0+0x430/0x686 [ 655.116691][ T3894] [] tun_get_user+0x2952/0x3d6c [ 655.118166][ T3894] [] tun_chr_write_iter+0xc4/0x21c [ 655.119663][ T3894] [] vfs_write+0x56c/0xb12 [ 655.121208][ T3894] [] ksys_write+0x126/0x234 [ 655.122709][ T3894] [] __riscv_sys_write+0x6e/0xa0 [ 655.124119][ T3894] [] syscall_handler+0x94/0x118 [ 655.125575][ T3894] [] do_trap_ecall_u+0x396/0x530 [ 655.127090][ T3894] [] handle_exception+0x146/0x152 [ 655.129002][ T3894] SMP: stopping secondary CPUs [ 655.132812][ T3894] Rebooting in 86400 seconds.. VM DIAGNOSIS: 10:29:22 Registers: info registers vcpu 0 CPU#0 V = 0 pc ffffffff804eb558 mhartid 0000000000000000 mstatus 0000000a000000a0 hstatus 0000000200000000 vsstatus 0000000a00000000 mip 0000000000000000 mie 000000000000022a mideleg 0000000000001666 hideleg 0000000000000444 medeleg 0000000000f0b509 hedeleg 000000000000b109 mtvec 00000000800004f0 stvec ffffffff8634b694 vstvec 0000000000000000 mepc ffffffff8008eba2 sepc ffffffff802ffed6 vsepc 0000000000000000 mcause 0000000000000009 scause 8000000000000009 vscause 0000000000000000 mtval 0000000000000000 stval 0000000000000000 htval 0000000000000000 mtval2 0000000000000000 mscratch 000000008004a000 sscratch 0000000000000000 satp 901ab0000009ceef x0/zero 0000000000000000 x1/ra ffffffff802fe38e x2/sp ffff8f8007246410 x3/gp ffffffff89c83ca0 x4/tp ffffaf8021dc3480 x5/t0 ffff8f80072464b8 x6/t1 fffff1ef00e48c68 x7/t2 203032207865646e x8/s0 ffff8f8007246410 x9/s1 ffffffff882e8820 x10/a0 ffffffff882fa018 x11/a1 0000000000000000 x12/a2 000000000000000d x13/a3 ffffffff8031004e x14/a4 ffff8f8007eb3f18 x15/a5 0000000000039f18 x16/a6 0000000000000003 x17/a7 ffff8f8007246307 x18/s2 000000000000000d x19/s3 1ffff1f000e48c34 x20/s4 ffff8f8007246200 x21/s5 ffffffff882e8820 x22/s6 0000000000002000 x23/s7 1ffffffff105f403 x24/s8 00000000ffffe325 x25/s9 1ffff1f000e48c30 x26/s10 1ffffffff105d10a x27/s11 ffffffff882e8850 x28/t3 1ffff1f000e48ce4 x29/t4 fffffffef105d10c x30/t5 fffffffef105d10d x31/t6 ffff8f8007246358 fcsr 0000000000000000 f0/ft0 0000000000000000 f1/ft1 0000000000000000 f2/ft2 0000000000000000 f3/ft3 0000000000000000 f4/ft4 0000000000000000 f5/ft5 0000000000000000 f6/ft6 0000000000000000 f7/ft7 0000000000000000 f8/fs0 0000000000000000 f9/fs1 0000000000000000 f10/fa0 0000000000000000 f11/fa1 0000000000000000 f12/fa2 0000000000000000 f13/fa3 0000000000000000 f14/fa4 0000000000000000 f15/fa5 0000000000000000 f16/fa6 0000000000000000 f17/fa7 0000000000000000 f18/fs2 0000000000000000 f19/fs3 0000000000000000 f20/fs4 0000000000000000 f21/fs5 0000000000000000 f22/fs6 0000000000000000 f23/fs7 0000000000000000 f24/fs8 0000000000000000 f25/fs9 0000000000000000 f26/fs10 0000000000000000 f27/fs11 0000000000000000 f28/ft8 0000000000000000 f29/ft9 0000000000000000 f30/ft10 0000000000000000 f31/ft11 0000000000000000 info registers vcpu 1 CPU#1 V = 0 pc ffffffff802cf538 mhartid 0000000000000001 mstatus 0000000a000000a2 hstatus 0000000200000000 vsstatus 0000000a00000000 mip 0000000000000000 mie 000000000000022a mideleg 0000000000001666 hideleg 0000000000000444 medeleg 0000000000f0b509 hedeleg 000000000000b109 mtvec 00000000800004f0 stvec ffffffff8634b694 vstvec 0000000000000000 mepc ffffffff80229692 sepc 00000000000db080 vsepc 0000000000000000 mcause 8000000000000003 scause 0000000000000008 vscause 0000000000000000 mtval 0000000000000000 stval 0000000000000000 htval 0000000000000000 mtval2 0000000000000000 mscratch 0000000080048000 sscratch 0000000000000000 satp 901ac0000009c52a x0/zero 0000000000000000 x1/ra ffffffff80078624 x2/sp ffff8f8007277560 x3/gp ffffffff89c83ca0 x4/tp ffffaf8021dc0000 x5/t0 ffff8f80072778b0 x6/t1 fffffffef21ea1fb x7/t2 ffffffff80a4ccd2 x8/s0 ffff8f80072775e0 x9/s1 ffff8f8007277d00 x10/a0 ffffffff812f2daa x11/a1 0000000000000001 x12/a2 0000000000000001 x13/a3 ffffffff800784d6 x14/a4 0000000000000000 x15/a5 ffffaf8021dc1000 x16/a6 0000000000000003 x17/a7 ffffffff90f50fdb x18/s2 ffffffff80c40046 x19/s3 000000000000000b x20/s4 0000000000000000 x21/s5 dfffffff00000000 x22/s6 ffffffff80c40046 x23/s7 ffff8f8007277e90 x24/s8 dfffffff00000000 x25/s9 0000000000007fff x26/s10 ffffffff8634b694 x27/s11 0000000000000001 x28/t3 fab6b66800000000 x29/t4 fffffffef21ea1fb x30/t5 fffffffef21ea1fc x31/t6 0000000000000002 fcsr 0000000000000000 f0/ft0 0000000000000000 f1/ft1 0000000000000000 f2/ft2 0000000000000000 f3/ft3 0000000000000000 f4/ft4 0000000000000000 f5/ft5 0000000000000000 f6/ft6 0000000000000000 f7/ft7 0000000000000000 f8/fs0 0000000000000000 f9/fs1 0000000000000000 f10/fa0 0000000000000000 f11/fa1 0000000000000000 f12/fa2 0000000000000000 f13/fa3 0000000000000000 f14/fa4 0000000000000000 f15/fa5 0000000000000000 f16/fa6 0000000000000000 f17/fa7 0000000000000000 f18/fs2 0000000000000000 f19/fs3 0000000000000000 f20/fs4 0000000000000000 f21/fs5 0000000000000000 f22/fs6 0000000000000000 f23/fs7 0000000000000000 f24/fs8 0000000000000000 f25/fs9 0000000000000000 f26/fs10 0000000000000000 f27/fs11 0000000000000000 f28/ft8 0000000000000000 f29/ft9 0000000000000000 f30/ft10 0000000000000000 f31/ft11 0000000000000000