[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 16.364446] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 21.825746] random: sshd: uninitialized urandom read (32 bytes read) [ 22.210843] random: sshd: uninitialized urandom read (32 bytes read) [ 23.056615] random: sshd: uninitialized urandom read (32 bytes read) [ 28.447590] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.43' (ECDSA) to the list of known hosts. [ 33.825097] random: sshd: uninitialized urandom read (32 bytes read) [ 33.909034] IPVS: ftp: loaded support on port[0] = 21 [ 34.001586] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.007939] bridge0: port 1(bridge_slave_0) entered disabled state [ 34.014694] device bridge_slave_0 entered promiscuous mode [ 34.026553] bridge0: port 2(bridge_slave_1) entered blocking state [ 34.032888] bridge0: port 2(bridge_slave_1) entered disabled state [ 34.039612] device bridge_slave_1 entered promiscuous mode [ 34.051488] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 34.064542] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 34.094940] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 34.109663] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 34.154056] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 34.161087] team0: Port device team_slave_0 added [ 34.172603] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 34.179613] team0: Port device team_slave_1 added [ 34.191448] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready RTNETLINK answers: Operation not supported [ 34.204814] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 34.218100] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 34.231514] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported [ 34.315062] bridge0: port 2(bridge_slave_1) entered blocking state [ 34.321416] bridge0: port 2(bridge_slave_1) entered forwarding state [ 34.328015] bridge0: port 1(bridge_slave_0) entered blocking state [ 34.334365] bridge0: port 1(bridge_slave_0) entered forwarding state RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument [ 34.621413] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 34.627497] 8021q: adding VLAN 0 to HW filter on device bond0 [ 34.659100] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 34.690920] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 34.697973] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 34.725839] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 34.731910] 8021q: adding VLAN 0 to HW filter on device team0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 34.968256] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready 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 [ 36.000072] ================================================================== [ 36.007454] BUG: KASAN: use-after-free in dst_release+0x2a/0xb0 [ 36.013491] Write of size 4 at addr ffff8801b1a15d80 by task syz-executor074/4727 [ 36.021084] [ 36.022694] CPU: 0 PID: 4727 Comm: syz-executor074 Not tainted 4.18.0-rc6+ #165 [ 36.027750] ------------[ cut here ]------------ [ 36.030124] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.034865] kernel BUG at net/ipv6/route.c:1268! [ 36.044193] Call Trace: [ 36.048999] invalid opcode: 0000 [#1] SMP KASAN [ 36.051534] [ 36.056187] CPU: 1 PID: 4728 Comm: syz-executor074 Not tainted 4.18.0-rc6+ #165 [ 36.058348] dump_stack+0x1c9/0x2b4 [ 36.065763] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.069377] ? dump_stack_print_info.cold.2+0x52/0x52 [ 36.078713] RIP: 0010:ip6_pol_route+0x9e3/0x1250 [ 36.083877] ? printk+0xa7/0xcf [ 36.088601] Code: [ 36.091865] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 36.091868] 31 e4 [ 36.094011] ? dst_release+0x2a/0xb0 [ 36.098737] e8 [ 36.100872] print_address_description+0x6c/0x20b [ 36.104566] 30 [ 36.106473] ? dst_release+0x2a/0xb0 [ 36.111294] 4b [ 36.113197] kasan_report.cold.7+0x242/0x2fe [ 36.116882] 02 [ 36.118769] check_memory_region+0x13e/0x1b0 [ 36.123140] fc [ 36.125015] kasan_check_write+0x14/0x20 [ 36.129394] 4c [ 36.131269] dst_release+0x2a/0xb0 [ 36.135302] 89 [ 36.137180] inet_sock_destruct+0x6ae/0x9c0 [ 36.140687] e0 [ 36.142569] ? kernel_text_address+0x79/0xf0 [ 36.146857] f0 [ 36.148735] ? ipv4_mib_init_net+0x580/0x580 [ 36.153109] 4c [ 36.154985] ? unwind_get_return_address+0x61/0xa0 [ 36.159360] 0f [ 36.161241] ? __save_stack_trace+0x8d/0xf0 [ 36.166137] b1 [ 36.168014] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 36.172303] 33 [ 36.174180] ? udp_rmem_release+0x323/0x490 [ 36.179687] 31 [ 36.181562] udp_destruct_sock+0x350/0x4a0 [ 36.185854] ff [ 36.187734] ? dst_destroy+0x267/0x3c0 [ 36.191939] 49 [ 36.193811] ? dst_destroy_rcu+0x16/0x20 [ 36.197669] 89 [ 36.199552] ? rcu_process_callbacks+0xed5/0x1850 [ 36.203579] c4 [ 36.205480] ? udp_skb_dtor_locked+0x70/0x70 [ 36.210291] 48 [ 36.212168] l2tp_tunnel_destruct+0x174/0x290 [ 36.216542] 89 [ 36.218450] ? l2tp_build_l2tpv3_header+0x360/0x360 [ 36.223252] c6 [ 36.225131] __sk_destruct+0x107/0xa60 [ 36.230113] e8 [ 36.232008] ? lock_acquire+0x1e4/0x540 [ 36.235858] cb [ 36.237750] ? sock_warn_obsolete_bsdism+0xb0/0xb0 [ 36.241693] 34 [ 36.243587] ? lock_downgrade+0x8f0/0x8f0 [ 36.248481] c4 [ 36.250361] ? kasan_check_read+0x11/0x20 [ 36.254474] fb [ 36.256352] ? do_raw_spin_unlock+0xa7/0x2f0 [ 36.260479] 4d [ 36.262354] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 36.266729] 85 [ 36.268607] ? lock_acquire+0x1e4/0x540 [ 36.273185] e4 [ 36.275063] ? rcu_process_callbacks+0xfc6/0x1850 [ 36.279003] 0f [ 36.280878] ? trace_hardirqs_on+0xd/0x10 [ 36.285692] 84 [ 36.287569] ? lock_release+0xa30/0xa30 [ 36.291681] 0d [ 36.293596] ? debug_stats_show+0x100/0x100 [ 36.297543] fa [ 36.299425] ? trace_hardirqs_on+0xd/0x10 [ 36.303710] ff [ 36.305586] ? kmem_cache_free+0x22e/0x2d0 [ 36.309696] ff e8 [ 36.311580] ? dst_destroy+0x283/0x3c0 [ 36.315781] 8d [ 36.317920] ? sock_warn_obsolete_bsdism+0xb0/0xb0 [ 36.321771] 33 [ 36.323658] rcu_process_callbacks+0xed5/0x1850 [ 36.328551] c4 [ 36.330428] ? call_rcu_sched+0x20/0x20 [ 36.335065] fb [ 36.336941] ? load_balance+0x3640/0x3640 [ 36.340880] <0f> 0b [ 36.342767] ? hrtimer_start_range_ns+0xd20/0xd20 [ 36.346883] e8 [ 36.349192] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 36.353993] 86 33 [ 36.355886] ? ktime_get+0x2e1/0x440 [ 36.360874] c4 [ 36.363015] ? ktime_get_raw_ts64+0x4f0/0x4f0 [ 36.366691] fb [ 36.368574] ? lock_downgrade+0x8f0/0x8f0 [ 36.373041] e8 [ 36.374919] ? run_rebalance_domains+0x365/0x4c0 [ 36.379059] 31 [ 36.380952] ? _nohz_idle_balance+0x820/0x820 [ 36.385670] a2 ae [ 36.387563] ? rcu_idle_enter+0x480/0x480 [ 36.392023] fb [ 36.394163] ? clockevents_program_event+0x140/0x370 [ 36.398274] 31 [ 36.400151] __do_softirq+0x2e8/0xb17 [ 36.405224] ff [ 36.407104] ? __irqentry_text_end+0x1f97a8/0x1f97a8 [ 36.410879] 89 [ 36.412755] ? irq_exit+0xbb/0x210 [ 36.417826] c6 [ 36.419704] ? smp_apic_timer_interrupt+0x186/0x730 [ 36.423210] 88 [ 36.425086] ? smp_call_function_single_interrupt+0x660/0x660 [ 36.430073] 85 [ 36.431954] ? _raw_spin_unlock+0x22/0x30 [ 36.437804] e0 [ 36.439683] ? handle_edge_irq+0x330/0x870 [ 36.443798] fd [ 36.445672] ? task_prio+0x50/0x50 [ 36.449873] ff [ 36.451764] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 36.455284] ff [ 36.457175] do_softirq_own_stack+0x2a/0x40 [ 36.463847] [ 36.468249] RSP: 0018:ffff8801c453ece8 EFLAGS: 00010293 [ 36.470462] do_softirq.part.18+0x155/0x1a0 [ 36.475821] ? pppol2tp_sendmsg+0x49e/0x6c0 [ 36.480119] RAX: ffff8801bfa82040 RBX: ffffe8ffffd5f6a0 RCX: ffffffff85b7e1e5 [ 36.484433] __local_bh_enable_ip+0x1ec/0x230 [ 36.491681] RDX: 0000000000000000 RSI: ffffffff85b7e1f3 RDI: 0000000000000007 [ 36.496156] pppol2tp_sendmsg+0x4c4/0x6c0 [ 36.503403] RBP: ffff8801c453ef18 R08: ffff8801bfa82040 R09: fffff91ffffabed4 [ 36.507542] ? move_addr_to_kernel.part.18+0x100/0x100 [ 36.514780] R10: fffff91ffffabed4 R11: ffffe8ffffd5f6a7 R12: ffff8801b1a15d40 [ 36.520034] ? pppol2tp_getsockopt+0x950/0x950 [ 36.527306] R13: 0000000000000001 R14: ffff8801c883c500 R15: 0000000000000001 [ 36.531911] sock_sendmsg+0xd5/0x120 [ 36.539157] FS: 00007f63c5df6700(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000 [ 36.542851] ___sys_sendmsg+0x51d/0x930 [ 36.551052] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.555007] ? copy_msghdr_from_user+0x580/0x580 [ 36.560861] CR2: 00007f63c5df5e78 CR3: 00000001c19e2000 CR4: 00000000001406e0 [ 36.565598] ? pppol2tp_connect+0x895/0x2d70 [ 36.572845] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.577240] ? lock_acquire+0x1e4/0x540 [ 36.584484] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.588438] ? __might_fault+0x12b/0x1e0 [ 36.595685] Call Trace: [ 36.599733] ? lock_downgrade+0x8f0/0x8f0 [ 36.602309] ? ip6_pol_route_lookup+0x1120/0x1120 [ 36.606433] ? lock_release+0xa30/0xa30 [ 36.611290] ? trace_hardirqs_on+0x10/0x10 [ 36.615243] ? check_same_owner+0x340/0x340 [ 36.619456] ip6_pol_route_output+0x54/0x70 [ 36.623756] ? rcu_note_context_switch+0x730/0x730 [ 36.628060] fib6_rule_lookup+0x26e/0x700 [ 36.632964] ? check_same_owner+0x340/0x340 [ 36.637089] ? ip6_pol_route_input+0x80/0x80 [ 36.641385] __sys_sendmmsg+0x240/0x6f0 [ 36.645775] ? fib6_lookup+0x480/0x480 [ 36.649726] ? __ia32_sys_sendmsg+0xb0/0xb0 [ 36.653620] ? lock_acquire+0x1e4/0x540 [ 36.657958] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 36.661904] ? ip6_dst_check+0x44c/0xaf0 [ 36.667438] ? fput+0x130/0x1a0 [ 36.671488] ip6_route_output_flags+0x2c5/0x350 [ 36.674739] ? __sys_connect+0x1d1/0x4c0 [ 36.679381] ip6_dst_lookup_tail+0x1278/0x1da0 [ 36.683418] ? __ia32_sys_accept+0xb0/0xb0 [ 36.687980] ? ip6_dst_check+0x475/0xaf0 [ 36.692203] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 36.696233] ? ip6_negative_advice+0x230/0x230 [ 36.700794] __x64_sys_sendmmsg+0x9d/0x100 [ 36.705358] ? dst_output+0x180/0x180 [ 36.709589] do_syscall_64+0x1b9/0x820 [ 36.713370] ? lock_acquire+0x1e4/0x540 [ 36.717264] ? syscall_return_slowpath+0x5e0/0x5e0 [ 36.721217] ? sk_dst_check+0x285/0x5d0 [ 36.726124] ? syscall_return_slowpath+0x31d/0x5e0 [ 36.730081] ? lock_downgrade+0x8f0/0x8f0 [ 36.734989] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 36.739116] ? lock_release+0xa30/0xa30 [ 36.744804] ? prepare_exit_to_usermode+0x291/0x3b0 [ 36.748758] ? sk_dst_check+0x368/0x5d0 [ 36.753746] ? perf_trace_sys_enter+0xb10/0xb10 [ 36.757699] ip6_dst_lookup_flow+0xc8/0x270 [ 36.762346] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 36.766641] ? ip6_dst_lookup+0x60/0x60 [ 36.771467] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 36.775416] ? lock_acquire+0x1e4/0x540 [ 36.780576] RIP: 0033:0x446a29 [ 36.784528] ip6_sk_dst_lookup_flow+0x5d2/0xac0 [ 36.787691] Code: [ 36.792346] ? trace_hardirqs_on+0x10/0x10 [ 36.792354] e8 [ 36.794489] ? ip6_dst_lookup_flow+0x270/0x270 [ 36.798690] ac [ 36.800571] udpv6_sendmsg+0x2163/0x36b0 [ 36.805122] b8 [ 36.807001] ? ip_reply_glue_bits+0xc0/0xc0 [ 36.811035] 02 [ 36.812914] ? udpv6_queue_rcv_skb+0x15d0/0x15d0 [ 36.817201] 00 [ 36.819098] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 36.823800] 48 [ 36.825677] ? rw_copy_check_uvector+0x30d/0x3e0 [ 36.831180] 83 [ 36.833093] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 36.837815] c4 [ 36.839691] ? import_iovec+0x269/0x470 [ 36.845199] 18 [ 36.847072] ? dup_iter+0x270/0x270 [ 36.851034] c3 [ 36.852913] inet_sendmsg+0x1a1/0x690 [ 36.856507] 0f [ 36.858388] ? udpv6_queue_rcv_skb+0x15d0/0x15d0 [ 36.862155] 1f [ 36.864050] ? inet_sendmsg+0x1a1/0x690 [ 36.868774] 80 [ 36.870657] ? copy_msghdr_from_user+0x3c4/0x580 [ 36.874599] 00 [ 36.876479] ? ipip_gro_receive+0x100/0x100 [ 36.881203] 00 [ 36.883083] ? move_addr_to_kernel.part.18+0x100/0x100 [ 36.887373] 00 [ 36.889252] ? security_socket_sendmsg+0x94/0xc0 [ 36.894496] 00 [ 36.896375] ? ipip_gro_receive+0x100/0x100 [ 36.901098] 48 [ 36.902976] sock_sendmsg+0xd5/0x120 [ 36.907264] 89 [ 36.909144] ___sys_sendmsg+0x51d/0x930 [ 36.912822] f8 48 [ 36.914711] ? copy_msghdr_from_user+0x580/0x580 [ 36.918653] 89 [ 36.920794] ? __fget_light+0x2f7/0x440 [ 36.925516] f7 [ 36.927396] ? fget_raw+0x20/0x20 [ 36.931343] 48 [ 36.933228] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 36.936643] 89 [ 36.938522] ? sockfd_lookup_light+0xc5/0x160 [ 36.944037] d6 [ 36.945911] __sys_sendmmsg+0x240/0x6f0 [ 36.950381] 48 [ 36.952255] ? __ia32_sys_sendmsg+0xb0/0xb0 [ 36.956200] 89 [ 36.958084] ? finish_task_switch+0x1d3/0x870 [ 36.962364] ca [ 36.964241] ? lock_downgrade+0x8f0/0x8f0 [ 36.968703] 4d [ 36.970584] ? finish_task_switch+0x18a/0x870 [ 36.974703] 89 [ 36.976585] ? kasan_check_read+0x11/0x20 [ 36.981077] c2 [ 36.982955] ? do_raw_spin_unlock+0xa7/0x2f0 [ 36.987070] 4d [ 36.988948] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 36.993325] 89 [ 36.995198] __x64_sys_sendmmsg+0x9d/0x100 [ 36.999751] c8 [ 37.001630] do_syscall_64+0x1b9/0x820 [ 37.005832] 4c [ 37.007725] ? finish_task_switch+0x1d3/0x870 [ 37.011578] 8b [ 37.013455] ? syscall_return_slowpath+0x5e0/0x5e0 [ 37.017916] 4c 24 [ 37.019817] ? syscall_return_slowpath+0x31d/0x5e0 [ 37.024712] 08 [ 37.026849] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 37.031742] 0f [ 37.033618] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 37.038604] 05 [ 37.040483] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 37.045287] <48> [ 37.047172] RIP: 0033:0x446a29 [ 37.052333] 3d [ 37.054384] Code: [ 37.057553] 01 f0 [ 37.059429] e8 [ 37.061550] ff ff [ 37.063682] ac b8 [ 37.065563] 0f [ 37.067705] 02 [ 37.069833] 83 [ 37.071698] 00 48 [ 37.073576] eb [ 37.075437] 83 c4 [ 37.077577] 08 [ 37.079446] 18 [ 37.081576] fc [ 37.083444] c3 [ 37.085310] ff [ 37.087174] 0f 1f [ 37.089051] c3 [ 37.090930] 80 [ 37.093060] 66 [ 37.094927] 00 [ 37.096807] 2e [ 37.098674] 00 [ 37.100547] 0f [ 37.102429] 00 [ 37.104302] 1f [ 37.106201] 00 [ 37.108066] 84 [ 37.109934] 48 [ 37.111813] 00 [ 37.113680] 89 [ 37.115548] 00 [ 37.117412] f8 [ 37.119273] 00 00 [ 37.121152] 48 [ 37.125150] 89 [ 37.127028] RSP: 002b:00007f63c5e16db8 EFLAGS: 00000297 [ 37.127037] f7 [ 37.128921] ORIG_RAX: 0000000000000133 [ 37.134261] 48 [ 37.136132] RAX: ffffffffffffffda RBX: 00000000006dcc28 RCX: 0000000000446a29 [ 37.140081] 89 [ 37.141953] RDX: 00000000000003e8 RSI: 0000000020005fc0 RDI: 0000000000000004 [ 37.149195] d6 [ 37.151080] RBP: 00000000006dcc20 R08: 0000000000000000 R09: 0000000000000000 [ 37.158325] 48 [ 37.160197] R10: 0000000000000000 R11: 0000000000000297 R12: 00000000006dcc2c [ 37.167440] 89 [ 37.169310] R13: 00007ffe149e51cf R14: 00007f63c5e179c0 R15: 0000000000000000 [ 37.176557] ca [ 37.178429] [ 37.185677] 4d [ 37.187549] Allocated by task 4572: [ 37.189153] 89 [ 37.191032] save_stack+0x43/0xd0 [ 37.194627] c2 [ 37.196505] kasan_kmalloc+0xc4/0xe0 [ 37.199927] 4d [ 37.201799] kasan_slab_alloc+0x12/0x20 [ 37.205499] 89 [ 37.207374] kmem_cache_alloc+0x12e/0x760 [ 37.211316] c8 [ 37.213218] dst_alloc+0xbb/0x1d0 [ 37.217346] 4c [ 37.219224] ip6_dst_alloc+0x35/0xa0 [ 37.222643] 8b [ 37.224551] ip6_pol_route+0x83f/0x1250 [ 37.228243] 4c [ 37.230120] ip6_pol_route_output+0x54/0x70 [ 37.234060] 24 [ 37.235935] fib6_rule_lookup+0x26e/0x700 [ 37.240223] 08 [ 37.242116] ip6_route_output_flags+0x2c5/0x350 [ 37.246233] 0f [ 37.248106] ip6_dst_lookup_tail+0xe3f/0x1da0 [ 37.252743] 05 [ 37.254632] ip6_dst_lookup_flow+0xc8/0x270 [ 37.259095] <48> [ 37.260985] ip6_datagram_dst_update+0x75b/0xf80 [ 37.265274] 3d [ 37.267328] __ip6_datagram_connect+0x5fe/0x1470 [ 37.272049] 01 f0 [ 37.273935] ip6_datagram_connect+0x2f/0x50 [ 37.278659] ff [ 37.280798] inet_dgram_connect+0x154/0x2e0 [ 37.285089] ff [ 37.286967] __sys_connect+0x37d/0x4c0 [ 37.291252] 0f [ 37.293128] __x64_sys_connect+0x73/0xb0 [ 37.296978] 83 eb [ 37.298880] do_syscall_64+0x1b9/0x820 [ 37.302907] 08 [ 37.305062] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 37.308929] fc [ 37.310798] [ 37.315965] ff [ 37.317837] Freed by task 4727: [ 37.319443] c3 [ 37.321320] save_stack+0x43/0xd0 [ 37.324567] 66 [ 37.326445] __kasan_slab_free+0x11a/0x170 [ 37.329865] 2e [ 37.331741] kasan_slab_free+0xe/0x10 [ 37.335947] 0f [ 37.337831] kmem_cache_free+0x86/0x2d0 [ 37.341607] 1f [ 37.343480] dst_destroy+0x267/0x3c0 [ 37.347422] 84 [ 37.349300] dst_destroy_rcu+0x16/0x20 [ 37.352980] 00 [ 37.354856] rcu_process_callbacks+0xed5/0x1850 [ 37.358710] 00 [ 37.360588] __do_softirq+0x2e8/0xb17 [ 37.365223] 00 [ 37.367088] [ 37.370867] 00 [ 37.372744] The buggy address belongs to the object at ffff8801b1a15d40 [ 37.372744] which belongs to the cache ip6_dst_cache of size 240 [ 37.376243] The buggy address is located 64 bytes inside of [ 37.376243] 240-byte region [ffff8801b1a15d40, ffff8801b1a15e30) [ 37.376256] The buggy address belongs to the page: [ 37.389100] RSP: 002b:00007f63c5df5db8 EFLAGS: 00000246 [ 37.400878] page:ffffea0006c68540 count:1 mapcount:0 mapping:ffff8801cde33ac0 index:0x0 [ 37.405797] ORIG_RAX: 0000000000000133 [ 37.419261] RAX: ffffffffffffffda RBX: 00000000006dcc38 RCX: 0000000000446a29 [ 37.423216] flags: 0x2fffc0000000100(slab) [ 37.430464] RDX: 00000000000000b8 RSI: 0000000020001b00 RDI: 0000000000000003 [ 37.434684] raw: 02fffc0000000100 ffffea00075e3ac8 ffffea0006ed0b08 ffff8801cde33ac0 [ 37.441934] RBP: 00000000006dcc30 R08: 00007f63c5df6700 R09: 0000000000000000 [ 37.449790] raw: 0000000000000000 ffff8801b1a150c0 000000010000000c 0000000000000000 [ 37.457039] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dcc3c [ 37.464893] page dumped because: kasan: bad access detected [ 37.472150] R13: 00007ffe149e51cf R14: 00007f63c5df69c0 R15: 0000000000000001 [ 37.477830] [ 37.485085] Modules linked in: [ 37.486683] Memory state around the buggy address: [ 37.489866] ffff8801b1a15c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc [ 37.494772] Dumping ftrace buffer: [ 37.502115] ffff8801b1a15d00: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb [ 37.505636] (ftrace buffer empty) [ 37.512979] >ffff8801b1a15d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 37.516768] ---[ end trace 284e277c8de7cca5 ]--- [ 37.524028] ^ [ 37.524038] ffff8801b1a15e00: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc [ 37.524054] ffff8801b1a15e80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 37.528837] RIP: 0010:ip6_pol_route+0x9e3/0x1250 [ 37.532157] ================================================================== [ 37.532210] Kernel panic - not syncing: panic_on_warn set ... [ 37.532210] [ 37.539530] Code: [ 37.547253] Dumping ftrace buffer: [ 37.547258] (ftrace buffer empty) [ 37.547262] Kernel Offset: disabled [ 37.579549] Rebooting in 86400 seconds..