Warning: Permanently added '10.128.15.201' (ECDSA) to the list of known hosts. syzkaller login: [ 69.092816][ T7947] IPVS: ftp: loaded support on port[0] = 21 [ 69.137356][ T7947] chnl_net:caif_netlink_parms(): no params data found [ 69.160085][ T7947] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.168751][ T7947] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.176678][ T7947] device bridge_slave_0 entered promiscuous mode [ 69.184327][ T7947] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.191618][ T7947] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.199259][ T7947] device bridge_slave_1 entered promiscuous mode [ 69.213227][ T7947] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 69.223993][ T7947] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 69.241044][ T7947] team0: Port device team_slave_0 added [ 69.248213][ T7947] team0: Port device team_slave_1 added [ 69.327389][ T7947] device hsr_slave_0 entered promiscuous mode [ 69.375890][ T7947] device hsr_slave_1 entered promiscuous mode [ 69.452108][ T7947] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.459415][ T7947] bridge0: port 2(bridge_slave_1) entered forwarding state [ 69.467198][ T7947] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.474480][ T7947] bridge0: port 1(bridge_slave_0) entered forwarding state [ 69.502955][ T7947] 8021q: adding VLAN 0 to HW filter on device bond0 [ 69.515877][ T7949] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 69.535814][ T7949] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.543859][ T7949] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.552264][ T7949] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 69.563207][ T7947] 8021q: adding VLAN 0 to HW filter on device team0 [ 69.573279][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 69.581947][ T22] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.589175][ T22] bridge0: port 1(bridge_slave_0) entered forwarding state [ 69.607495][ T7949] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 69.616234][ T7949] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.623280][ T7949] bridge0: port 2(bridge_slave_1) entered forwarding state [ 69.631303][ T7949] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 69.639786][ T7949] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 69.648908][ T7949] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 69.660102][ T2956] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 69.671460][ T7947] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 69.682610][ T7947] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 69.691637][ T7949] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready executing program [ 69.709025][ T7947] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 69.795917][ C0] protocol 88fb is buggy, dev hsr_slave_0 [ 69.801873][ C0] protocol 88fb is buggy, dev hsr_slave_1 [ 69.810352][ T7957] netlink: 'syz-executor626': attribute type 2 has an invalid length. executing program [ 69.970001][ T7958] netlink: 'syz-executor626': attribute type 2 has an invalid length. [ 70.025620][ C0] protocol 88fb is buggy, dev hsr_slave_0 [ 70.031403][ C0] protocol 88fb is buggy, dev hsr_slave_1 [ 70.046116][ T7958] netlink: 'syz-executor626': attribute type 2 has an invalid length. [ 70.054464][ T7958] ================================================================== [ 70.062614][ T7958] BUG: KASAN: slab-out-of-bounds in tcf_exts_destroy+0x39/0xb0 [ 70.070166][ T7958] Read of size 8 at addr ffff888095066790 by task syz-executor626/7958 [ 70.078551][ T7958] [ 70.080881][ T7958] CPU: 1 PID: 7958 Comm: syz-executor626 Not tainted 5.4.0-rc2+ #0 [ 70.089801][ T7958] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.100086][ T7958] Call Trace: [ 70.103374][ T7958] dump_stack+0x1d8/0x2f8 [ 70.107803][ T7958] print_address_description+0x75/0x5c0 [ 70.113333][ T7958] ? vprintk_func+0x158/0x170 [ 70.118014][ T7958] ? printk+0x62/0x8d [ 70.122008][ T7958] ? vprintk_emit+0x2d4/0x3a0 [ 70.126673][ T7958] __kasan_report+0x14b/0x1c0 [ 70.131332][ T7958] ? tcf_exts_destroy+0x39/0xb0 [ 70.136167][ T7958] kasan_report+0x26/0x50 [ 70.140669][ T7958] __asan_report_load8_noabort+0x14/0x20 [ 70.145566][ C0] protocol 88fb is buggy, dev hsr_slave_0 [ 70.146296][ T7958] tcf_exts_destroy+0x39/0xb0 [ 70.152139][ C0] protocol 88fb is buggy, dev hsr_slave_1 [ 70.156739][ T7958] tcindex_change+0x1121/0x2680 [ 70.156783][ T7958] tc_new_tfilter+0x151c/0x27b0 [ 70.156800][ T7958] ? tcindex_get+0x1e0/0x1e0 [ 70.176725][ T7958] ? tcf_tunnel_encap_put_tunnel+0x20/0x20 [ 70.182609][ T7958] rtnetlink_rcv_msg+0x8fb/0xd40 [ 70.187538][ T7958] ? rcu_lock_release+0xd/0x30 [ 70.192384][ T7958] ? __local_bh_enable_ip+0x13a/0x240 [ 70.197843][ T7958] ? local_bh_enable+0x9/0x30 [ 70.202504][ T7958] ? trace_hardirqs_on+0x74/0x80 [ 70.207435][ T7958] ? __local_bh_enable_ip+0x13a/0x240 [ 70.212818][ T7958] ? local_bh_enable+0x1f/0x30 [ 70.217584][ T7958] ? rcu_lock_release+0x9/0x30 [ 70.222694][ T7958] ? rcu_lock_release+0x9/0x30 [ 70.227452][ T7958] netlink_rcv_skb+0x19e/0x3d0 [ 70.232217][ T7958] ? rtnetlink_bind+0x80/0x80 [ 70.236877][ T7958] rtnetlink_rcv+0x1c/0x20 [ 70.241283][ T7958] netlink_unicast+0x787/0x8f0 [ 70.246039][ T7958] netlink_sendmsg+0x993/0xc50 [ 70.250797][ T7958] ? netlink_getsockopt+0x9f0/0x9f0 [ 70.255982][ T7958] ___sys_sendmsg+0x60d/0x910 [ 70.260670][ T7958] ? __lock_acquire+0xc75/0x1be0 [ 70.265617][ T7958] ? memset+0x31/0x40 [ 70.269595][ T7958] ? __fdget+0x156/0x200 [ 70.273820][ T7958] __sys_sendmmsg+0x239/0x470 [ 70.278658][ T7958] ? fpregs_assert_state_consistent+0xb7/0xe0 [ 70.284968][ T7958] ? prepare_exit_to_usermode+0x1f7/0x580 [ 70.290782][ T7958] ? trace_irq_disable_rcuidle+0x23/0x1e0 [ 70.296508][ T7958] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 70.301959][ T7958] ? trace_irq_disable_rcuidle+0x23/0x1e0 [ 70.307659][ T7958] __x64_sys_sendmmsg+0xa0/0xb0 [ 70.312486][ T7958] do_syscall_64+0xf7/0x1c0 [ 70.316972][ T7958] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 70.322849][ T7958] RIP: 0033:0x443299 [ 70.326721][ T7958] Code: e8 9c 07 03 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 3b 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 70.346312][ T7958] RSP: 002b:00007ffcc2da8fd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 70.354722][ T7958] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443299 [ 70.362783][ T7958] RDX: 0000000000000332 RSI: 0000000020000140 RDI: 0000000000000008 [ 70.370736][ T7958] RBP: 000000000000000c R08: 0000000000000000 R09: 0000000000000000 [ 70.378689][ T7958] R10: 0000000000000000 R11: 0000000000000246 R12: 0030766461746162 [ 70.386658][ T7958] R13: 00000000004041f0 R14: 0000000000000000 R15: 0000000000000000 [ 70.394637][ T7958] [ 70.396946][ T7958] Allocated by task 7958: [ 70.401253][ T7958] __kasan_kmalloc+0x11c/0x1b0 [ 70.405996][ T7958] kasan_kmalloc+0x9/0x10 [ 70.410355][ T7958] __kmalloc+0x254/0x340 [ 70.414578][ T7958] kcalloc+0x2f/0x50 [ 70.418474][ T7958] tcindex_change+0x525/0x2680 [ 70.423213][ T7958] tc_new_tfilter+0x151c/0x27b0 [ 70.428042][ T7958] rtnetlink_rcv_msg+0x8fb/0xd40 [ 70.432954][ T7958] netlink_rcv_skb+0x19e/0x3d0 [ 70.437690][ T7958] rtnetlink_rcv+0x1c/0x20 [ 70.442078][ T7958] netlink_unicast+0x787/0x8f0 [ 70.446815][ T7958] netlink_sendmsg+0x993/0xc50 [ 70.451575][ T7958] ___sys_sendmsg+0x60d/0x910 [ 70.456232][ T7958] __sys_sendmmsg+0x239/0x470 [ 70.460891][ T7958] __x64_sys_sendmmsg+0xa0/0xb0 [ 70.465732][ T7958] do_syscall_64+0xf7/0x1c0 [ 70.470301][ T7958] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 70.476421][ T7958] [ 70.478765][ T7958] Freed by task 7705: [ 70.482742][ T7958] __kasan_slab_free+0x12a/0x1e0 [ 70.487672][ T7958] kasan_slab_free+0xe/0x10 [ 70.492173][ T7958] kfree+0x115/0x200 [ 70.496062][ T7958] security_cred_free+0xcd/0x100 [ 70.501104][ T7958] put_cred_rcu+0xcf/0x360 [ 70.505508][ T7958] __put_cred+0x154/0x210 [ 70.509831][ T7958] do_faccessat+0x604/0x770 [ 70.514308][ T7958] __x64_sys_access+0x5f/0x70 [ 70.518964][ T7958] do_syscall_64+0xf7/0x1c0 [ 70.523500][ T7958] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 70.529374][ T7958] [ 70.531686][ T7958] The buggy address belongs to the object at ffff888095066700 [ 70.531686][ T7958] which belongs to the cache kmalloc-192 of size 192 [ 70.545725][ T7958] The buggy address is located 144 bytes inside of [ 70.545725][ T7958] 192-byte region [ffff888095066700, ffff8880950667c0) [ 70.559065][ T7958] The buggy address belongs to the page: [ 70.564681][ T7958] page:ffffea0002541980 refcount:1 mapcount:0 mapping:ffff8880aa400000 index:0xffff888095066a00 [ 70.575063][ T7958] flags: 0x1fffc0000000200(slab) [ 70.579985][ T7958] raw: 01fffc0000000200 ffffea00027e3388 ffffea00025939c8 ffff8880aa400000 [ 70.588573][ T7958] raw: ffff888095066a00 ffff888095066000 0000000100000008 0000000000000000 [ 70.597159][ T7958] page dumped because: kasan: bad access detected [ 70.603547][ T7958] [ 70.605853][ T7958] Memory state around the buggy address: [ 70.611979][ T7958] ffff888095066680: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 70.620018][ T7958] ffff888095066700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 70.628089][ T7958] >ffff888095066780: 00 fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 70.636136][ T7958] ^ [ 70.640713][ T7958] ffff888095066800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 70.648752][ T7958] ffff888095066880: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 70.656806][ T7958] ================================================================== [ 70.665033][ T7958] Disabling lock debugging due to kernel taint [ 70.672237][ T7958] Kernel panic - not syncing: panic_on_warn set ... [ 70.678835][ T7958] CPU: 1 PID: 7958 Comm: syz-executor626 Tainted: G B 5.4.0-rc2+ #0 [ 70.688091][ T7958] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.698125][ T7958] Call Trace: [ 70.701428][ T7958] dump_stack+0x1d8/0x2f8 [ 70.705748][ T7958] panic+0x264/0x7a9 [ 70.709620][ T7958] ? __kasan_report+0x195/0x1c0 [ 70.714449][ T7958] ? trace_hardirqs_on+0x34/0x80 [ 70.719360][ T7958] ? __kasan_report+0x195/0x1c0 [ 70.724274][ T7958] __kasan_report+0x1bb/0x1c0 [ 70.728928][ T7958] ? tcf_exts_destroy+0x39/0xb0 [ 70.733752][ T7958] kasan_report+0x26/0x50 [ 70.738088][ T7958] __asan_report_load8_noabort+0x14/0x20 [ 70.743699][ T7958] tcf_exts_destroy+0x39/0xb0 [ 70.748355][ T7958] tcindex_change+0x1121/0x2680 [ 70.753200][ T7958] tc_new_tfilter+0x151c/0x27b0 [ 70.758070][ T7958] ? tcindex_get+0x1e0/0x1e0 [ 70.762684][ T7958] ? tcf_tunnel_encap_put_tunnel+0x20/0x20 [ 70.768469][ T7958] rtnetlink_rcv_msg+0x8fb/0xd40 [ 70.773467][ T7958] ? rcu_lock_release+0xd/0x30 [ 70.778218][ T7958] ? __local_bh_enable_ip+0x13a/0x240 [ 70.783734][ T7958] ? local_bh_enable+0x9/0x30 [ 70.788487][ T7958] ? trace_hardirqs_on+0x74/0x80 [ 70.793430][ T7958] ? __local_bh_enable_ip+0x13a/0x240 [ 70.798850][ T7958] ? local_bh_enable+0x1f/0x30 [ 70.803593][ T7958] ? rcu_lock_release+0x9/0x30 [ 70.808340][ T7958] ? rcu_lock_release+0x9/0x30 [ 70.813130][ T7958] netlink_rcv_skb+0x19e/0x3d0 [ 70.817958][ T7958] ? rtnetlink_bind+0x80/0x80 [ 70.822610][ T7958] rtnetlink_rcv+0x1c/0x20 [ 70.827000][ T7958] netlink_unicast+0x787/0x8f0 [ 70.831741][ T7958] netlink_sendmsg+0x993/0xc50 [ 70.836486][ T7958] ? netlink_getsockopt+0x9f0/0x9f0 [ 70.841673][ T7958] ___sys_sendmsg+0x60d/0x910 [ 70.846329][ T7958] ? __lock_acquire+0xc75/0x1be0 [ 70.851239][ T7958] ? memset+0x31/0x40 [ 70.855203][ T7958] ? __fdget+0x156/0x200 [ 70.859436][ T7958] __sys_sendmmsg+0x239/0x470 [ 70.864094][ T7958] ? fpregs_assert_state_consistent+0xb7/0xe0 [ 70.870135][ T7958] ? prepare_exit_to_usermode+0x1f7/0x580 [ 70.875840][ T7958] ? trace_irq_disable_rcuidle+0x23/0x1e0 [ 70.881555][ T7958] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 70.886991][ T7958] ? trace_irq_disable_rcuidle+0x23/0x1e0 [ 70.892692][ T7958] __x64_sys_sendmmsg+0xa0/0xb0 [ 70.897520][ T7958] do_syscall_64+0xf7/0x1c0 [ 70.901999][ T7958] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 70.907869][ T7958] RIP: 0033:0x443299 [ 70.911751][ T7958] Code: e8 9c 07 03 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 3b 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 70.931336][ T7958] RSP: 002b:00007ffcc2da8fd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 [ 70.939724][ T7958] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443299 [ 70.947672][ T7958] RDX: 0000000000000332 RSI: 0000000020000140 RDI: 0000000000000008 [ 70.955636][ T7958] RBP: 000000000000000c R08: 0000000000000000 R09: 0000000000000000 [ 70.963599][ T7958] R10: 0000000000000000 R11: 0000000000000246 R12: 0030766461746162 [ 70.971546][ T7958] R13: 00000000004041f0 R14: 0000000000000000 R15: 0000000000000000 [ 70.981203][ T7958] Kernel Offset: disabled [ 70.985558][ T7958] Rebooting in 86400 seconds..