Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.33' (ECDSA) to the list of known hosts. 2020/05/15 20:14:15 parsed 1 programs 2020/05/15 20:14:16 executed programs: 0 syzkaller login: [ 56.309095][ T7048] IPVS: ftp: loaded support on port[0] = 21 [ 56.404794][ T7048] chnl_net:caif_netlink_parms(): no params data found [ 56.456207][ T7048] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.464276][ T7048] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.472844][ T7048] device bridge_slave_0 entered promiscuous mode [ 56.482840][ T7048] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.490114][ T7048] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.498640][ T7048] device bridge_slave_1 entered promiscuous mode [ 56.518729][ T7048] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.530244][ T7048] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.552514][ T7048] team0: Port device team_slave_0 added [ 56.559854][ T7048] team0: Port device team_slave_1 added [ 56.578012][ T7048] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 56.585238][ T7048] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 56.611816][ T7048] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 56.625459][ T7048] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 56.632403][ T7048] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 56.659521][ T7048] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 56.727155][ T7048] device hsr_slave_0 entered promiscuous mode [ 56.763936][ T7048] device hsr_slave_1 entered promiscuous mode [ 56.898922][ T7048] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 56.957008][ T7048] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 57.006029][ T7048] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 57.045907][ T7048] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 57.109779][ T7048] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.117084][ T7048] bridge0: port 2(bridge_slave_1) entered forwarding state [ 57.125175][ T7048] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.132250][ T7048] bridge0: port 1(bridge_slave_0) entered forwarding state [ 57.178441][ T7048] 8021q: adding VLAN 0 to HW filter on device bond0 [ 57.190811][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 57.202624][ T34] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.211184][ T34] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.220234][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 57.234407][ T7048] 8021q: adding VLAN 0 to HW filter on device team0 [ 57.245449][ T3522] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 57.255003][ T3522] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.262147][ T3522] bridge0: port 1(bridge_slave_0) entered forwarding state [ 57.286065][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 57.295218][ T34] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.302268][ T34] bridge0: port 2(bridge_slave_1) entered forwarding state [ 57.311051][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 57.320665][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 57.329868][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 57.345313][ T3522] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 57.355002][ T3522] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 57.367430][ T7048] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 57.386889][ T3522] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 57.395412][ T3522] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 57.409499][ T7048] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 57.429284][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 57.439023][ T34] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 57.461870][ T7048] device veth0_vlan entered promiscuous mode [ 57.469684][ T2726] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 57.479065][ T2726] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 57.488994][ T2726] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 57.498324][ T2726] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 57.511152][ T7048] device veth1_vlan entered promiscuous mode [ 57.534929][ T3522] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 57.545270][ T3522] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 57.554742][ T3522] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 57.564510][ T3522] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 57.575834][ T7048] device veth0_macvtap entered promiscuous mode [ 57.587149][ T7048] device veth1_macvtap entered promiscuous mode [ 57.604325][ T7048] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 57.611811][ T3522] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 57.622800][ T3522] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 57.631380][ T3522] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 57.641370][ T3522] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 57.654193][ T7048] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 57.664076][ T3522] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 57.672970][ T3522] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 60.358137][ T7510] ================================================================== [ 60.366358][ T7510] BUG: KASAN: slab-out-of-bounds in fl6_update_dst+0x2bb/0x2c0 [ 60.373912][ T7510] Read of size 16 at addr ffff8880a0f19368 by task syz-executor.0/7510 [ 60.382140][ T7510] [ 60.384474][ T7510] CPU: 0 PID: 7510 Comm: syz-executor.0 Not tainted 5.7.0-rc5-syzkaller #0 [ 60.393195][ T7510] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.403266][ T7510] Call Trace: [ 60.406638][ T7510] dump_stack+0x188/0x20d [ 60.411118][ T7510] print_address_description.constprop.0.cold+0xd3/0x413 [ 60.418164][ T7510] ? vprintk_func+0x81/0x17e [ 60.422782][ T7510] ? fl6_update_dst+0x2bb/0x2c0 [ 60.427763][ T7510] __kasan_report.cold+0x20/0x38 [ 60.432733][ T7510] ? fl6_update_dst+0x2bb/0x2c0 [ 60.437596][ T7510] ? fl6_update_dst+0x2bb/0x2c0 [ 60.442835][ T7510] kasan_report+0x33/0x50 [ 60.447224][ T7510] fl6_update_dst+0x2bb/0x2c0 [ 60.451920][ T7510] udpv6_sendmsg+0x1866/0x2b50 [ 60.457050][ T7510] ? ip_reply_glue_bits+0xb0/0xb0 [ 60.462119][ T7510] ? udp_v6_get_port+0x690/0x690 [ 60.467103][ T7510] ? mark_held_locks+0xe0/0xe0 [ 60.471873][ T7510] ? mark_held_locks+0xe0/0xe0 [ 60.476648][ T7510] ? mark_held_locks+0x9f/0xe0 [ 60.481456][ T7510] ? release_sock+0x1b/0x1b0 [ 60.486072][ T7510] ? release_sock+0x1b/0x1b0 [ 60.490666][ T7510] ? find_held_lock+0x2d/0x110 [ 60.495545][ T7510] ? inet_autobind+0x130/0x190 [ 60.500290][ T7510] ? lock_downgrade+0x840/0x840 [ 60.505152][ T7510] ? __local_bh_enable_ip+0x159/0x270 [ 60.510763][ T7510] ? lockdep_hardirqs_on+0x463/0x620 [ 60.516044][ T7510] ? inet_autobind+0x130/0x190 [ 60.520793][ T7510] ? __local_bh_enable_ip+0x159/0x270 [ 60.526193][ T7510] ? inet6_sendmsg+0x99/0xe0 [ 60.530766][ T7510] inet6_sendmsg+0x99/0xe0 [ 60.535179][ T7510] ? inet6_ioctl+0x1b0/0x1b0 [ 60.539871][ T7510] sock_sendmsg+0xcf/0x120 [ 60.544293][ T7510] __sys_sendto+0x220/0x330 [ 60.548814][ T7510] ? __ia32_sys_getpeername+0xb0/0xb0 [ 60.554639][ T7510] ? _copy_to_user+0x126/0x160 [ 60.559431][ T7510] ? get_old_timespec32+0x1f0/0x1f0 [ 60.564720][ T7510] ? __ia32_sys_futex_time32+0x320/0x494 [ 60.570342][ T7510] ? __ia32_sys_futex_time32+0x32a/0x494 [ 60.575957][ T7510] ? __ia32_sys_clock_gettime32+0x165/0x240 [ 60.581828][ T7510] ? __x64_sys_clock_gettime32+0x240/0x240 [ 60.587626][ T7510] __ia32_sys_sendto+0xdb/0x1b0 [ 60.592458][ T7510] ? lockdep_hardirqs_on+0x463/0x620 [ 60.597730][ T7510] do_fast_syscall_32+0x270/0xe90 [ 60.602750][ T7510] entry_SYSENTER_compat+0x70/0x7f [ 60.607866][ T7510] [ 60.610170][ T7510] Allocated by task 7511: [ 60.614613][ T7510] save_stack+0x1b/0x40 [ 60.618850][ T7510] __kasan_kmalloc.constprop.0+0xbf/0xd0 [ 60.624473][ T7510] __kmalloc+0x161/0x7a0 [ 60.628858][ T7510] sock_kmalloc+0xb5/0x100 [ 60.633271][ T7510] ipv6_renew_options+0x274/0x940 [ 60.638317][ T7510] do_ipv6_setsockopt.isra.0+0x2eaf/0x42f0 [ 60.644124][ T7510] compat_ipv6_setsockopt+0x115/0x210 [ 60.649487][ T7510] compat_udpv6_setsockopt+0x5d/0xa0 [ 60.654794][ T7510] compat_sock_common_setsockopt+0xaa/0x120 [ 60.660837][ T7510] __compat_sys_setsockopt+0x15d/0x310 [ 60.666793][ T7510] __ia32_compat_sys_setsockopt+0xb9/0x150 [ 60.672757][ T7510] do_fast_syscall_32+0x270/0xe90 [ 60.677797][ T7510] entry_SYSENTER_compat+0x70/0x7f [ 60.682882][ T7510] [ 60.685202][ T7510] Freed by task 6967: [ 60.689177][ T7510] save_stack+0x1b/0x40 [ 60.693323][ T7510] __kasan_slab_free+0xf7/0x140 [ 60.698163][ T7510] kfree+0x109/0x2b0 [ 60.702039][ T7510] kernfs_fop_release+0xe7/0x190 [ 60.706953][ T7510] __fput+0x33e/0x880 [ 60.710930][ T7510] task_work_run+0xf4/0x1b0 [ 60.715414][ T7510] exit_to_usermode_loop+0x2fa/0x360 [ 60.720674][ T7510] do_syscall_64+0x6b1/0x7d0 [ 60.725275][ T7510] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 60.731141][ T7510] [ 60.733466][ T7510] The buggy address belongs to the object at ffff8880a0f19300 [ 60.733466][ T7510] which belongs to the cache kmalloc-128 of size 128 [ 60.747617][ T7510] The buggy address is located 104 bytes inside of [ 60.747617][ T7510] 128-byte region [ffff8880a0f19300, ffff8880a0f19380) [ 60.760868][ T7510] The buggy address belongs to the page: [ 60.766488][ T7510] page:ffffea000283c640 refcount:1 mapcount:0 mapping:00000000eb87a825 index:0x0 [ 60.775585][ T7510] flags: 0xfffe0000000200(slab) [ 60.780428][ T7510] raw: 00fffe0000000200 ffffea00027eb808 ffffea00029e6188 ffff8880aa000700 [ 60.788991][ T7510] raw: 0000000000000000 ffff8880a0f19000 0000000100000010 0000000000000000 [ 60.797547][ T7510] page dumped because: kasan: bad access detected [ 60.803932][ T7510] [ 60.806233][ T7510] Memory state around the buggy address: [ 60.811882][ T7510] ffff8880a0f19200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 60.819926][ T7510] ffff8880a0f19280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 60.828121][ T7510] >ffff8880a0f19300: 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc [ 60.836168][ T7510] ^ [ 60.843620][ T7510] ffff8880a0f19380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 60.851676][ T7510] ffff8880a0f19400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 60.859747][ T7510] ================================================================== [ 60.867803][ T7510] Disabling lock debugging due to kernel taint [ 60.893948][ T7510] Kernel panic - not syncing: panic_on_warn set ... [ 60.900918][ T7510] CPU: 1 PID: 7510 Comm: syz-executor.0 Tainted: G B 5.7.0-rc5-syzkaller #0 [ 60.910893][ T7510] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.920947][ T7510] Call Trace: [ 60.924223][ T7510] dump_stack+0x188/0x20d [ 60.928542][ T7510] panic+0x2e3/0x75c [ 60.932444][ T7510] ? add_taint.cold+0x16/0x16 [ 60.937114][ T7510] ? preempt_schedule_common+0x5e/0xc0 [ 60.942549][ T7510] ? fl6_update_dst+0x2bb/0x2c0 [ 60.947395][ T7510] ? preempt_schedule_thunk+0x16/0x18 [ 60.952766][ T7510] ? trace_hardirqs_on+0x55/0x220 [ 60.957786][ T7510] ? fl6_update_dst+0x2bb/0x2c0 [ 60.962628][ T7510] end_report+0x4d/0x53 [ 60.966875][ T7510] __kasan_report.cold+0xd/0x38 [ 60.971725][ T7510] ? fl6_update_dst+0x2bb/0x2c0 [ 60.976571][ T7510] ? fl6_update_dst+0x2bb/0x2c0 [ 60.981408][ T7510] kasan_report+0x33/0x50 [ 60.985879][ T7510] fl6_update_dst+0x2bb/0x2c0 [ 60.990597][ T7510] udpv6_sendmsg+0x1866/0x2b50 [ 60.995350][ T7510] ? ip_reply_glue_bits+0xb0/0xb0 [ 61.000381][ T7510] ? udp_v6_get_port+0x690/0x690 [ 61.005301][ T7510] ? mark_held_locks+0xe0/0xe0 [ 61.010056][ T7510] ? mark_held_locks+0xe0/0xe0 [ 61.014807][ T7510] ? mark_held_locks+0x9f/0xe0 [ 61.019563][ T7510] ? release_sock+0x1b/0x1b0 [ 61.024127][ T7510] ? release_sock+0x1b/0x1b0 [ 61.028693][ T7510] ? find_held_lock+0x2d/0x110 [ 61.033459][ T7510] ? inet_autobind+0x130/0x190 [ 61.038217][ T7510] ? lock_downgrade+0x840/0x840 [ 61.043109][ T7510] ? __local_bh_enable_ip+0x159/0x270 [ 61.048474][ T7510] ? lockdep_hardirqs_on+0x463/0x620 [ 61.053757][ T7510] ? inet_autobind+0x130/0x190 [ 61.058514][ T7510] ? __local_bh_enable_ip+0x159/0x270 [ 61.063886][ T7510] ? inet6_sendmsg+0x99/0xe0 [ 61.068476][ T7510] inet6_sendmsg+0x99/0xe0 [ 61.072898][ T7510] ? inet6_ioctl+0x1b0/0x1b0 [ 61.077485][ T7510] sock_sendmsg+0xcf/0x120 [ 61.081882][ T7510] __sys_sendto+0x220/0x330 [ 61.086365][ T7510] ? __ia32_sys_getpeername+0xb0/0xb0 [ 61.091720][ T7510] ? _copy_to_user+0x126/0x160 [ 61.096470][ T7510] ? get_old_timespec32+0x1f0/0x1f0 [ 61.101666][ T7510] ? __ia32_sys_futex_time32+0x320/0x494 [ 61.107289][ T7510] ? __ia32_sys_futex_time32+0x32a/0x494 [ 61.112995][ T7510] ? __ia32_sys_clock_gettime32+0x165/0x240 [ 61.118864][ T7510] ? __x64_sys_clock_gettime32+0x240/0x240 [ 61.124652][ T7510] __ia32_sys_sendto+0xdb/0x1b0 [ 61.129482][ T7510] ? lockdep_hardirqs_on+0x463/0x620 [ 61.135532][ T7510] do_fast_syscall_32+0x270/0xe90 [ 61.140546][ T7510] entry_SYSENTER_compat+0x70/0x7f [ 61.147029][ T7510] Kernel Offset: disabled [ 61.151681][ T7510] Rebooting in 86400 seconds..