[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.18' (ECDSA) to the list of known hosts. 2020/09/05 13:21:40 parsed 1 programs 2020/09/05 13:21:40 executed programs: 0 syzkaller login: [ 1050.727424] audit: type=1400 audit(1599312100.541:8): avc: denied { execmem } for pid=6494 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 1051.846441] IPVS: ftp: loaded support on port[0] = 21 [ 1051.963776] chnl_net:caif_netlink_parms(): no params data found [ 1052.045017] bridge0: port 1(bridge_slave_0) entered blocking state [ 1052.051723] bridge0: port 1(bridge_slave_0) entered disabled state [ 1052.058976] device bridge_slave_0 entered promiscuous mode [ 1052.067398] bridge0: port 2(bridge_slave_1) entered blocking state [ 1052.074136] bridge0: port 2(bridge_slave_1) entered disabled state [ 1052.081242] device bridge_slave_1 entered promiscuous mode [ 1052.099951] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 1052.108999] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 1052.128578] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 1052.136078] team0: Port device team_slave_0 added [ 1052.141958] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 1052.149561] team0: Port device team_slave_1 added [ 1052.166716] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 1052.173027] 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. [ 1052.198986] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 1052.211468] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 1052.217863] 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. [ 1052.243211] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 1052.254195] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 1052.261941] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 1052.280813] device hsr_slave_0 entered promiscuous mode [ 1052.287108] device hsr_slave_1 entered promiscuous mode [ 1052.293854] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 1052.301008] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 1052.366743] bridge0: port 2(bridge_slave_1) entered blocking state [ 1052.373432] bridge0: port 2(bridge_slave_1) entered forwarding state [ 1052.380364] bridge0: port 1(bridge_slave_0) entered blocking state [ 1052.386959] bridge0: port 1(bridge_slave_0) entered forwarding state [ 1052.421510] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 1052.428942] 8021q: adding VLAN 0 to HW filter on device bond0 [ 1052.438137] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 1052.448818] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 1052.457757] bridge0: port 1(bridge_slave_0) entered disabled state [ 1052.465330] bridge0: port 2(bridge_slave_1) entered disabled state [ 1052.472629] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 1052.483686] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 1052.489924] 8021q: adding VLAN 0 to HW filter on device team0 [ 1052.499921] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 1052.508134] bridge0: port 1(bridge_slave_0) entered blocking state [ 1052.514549] bridge0: port 1(bridge_slave_0) entered forwarding state [ 1052.524606] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 1052.532659] bridge0: port 2(bridge_slave_1) entered blocking state [ 1052.539963] bridge0: port 2(bridge_slave_1) entered forwarding state [ 1052.563070] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 1052.571245] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 1052.579245] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 1052.587000] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 1052.594847] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 1052.604469] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 1052.610658] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 1052.624969] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 1052.632696] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 1052.639453] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 1052.652397] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 1052.665068] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 1052.674901] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 1052.710992] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 1052.718649] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 1052.726030] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 1052.736485] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 1052.744926] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 1052.752000] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 1052.760911] device veth0_vlan entered promiscuous mode [ 1052.769958] device veth1_vlan entered promiscuous mode [ 1052.776323] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 1052.785318] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 1052.803132] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 1052.813519] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 1052.821141] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 1052.829322] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 1052.839034] device veth0_macvtap entered promiscuous mode [ 1052.846168] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 1052.857200] device veth1_macvtap entered promiscuous mode [ 1052.866864] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 1052.877457] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 1052.887632] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 1052.894817] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 1052.903464] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 1052.914278] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 1052.921062] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 1053.882541] Bluetooth: hci0: command 0x0409 tx timeout 2020/09/05 13:21:45 executed programs: 143 [ 1055.961679] Bluetooth: hci0: command 0x041b tx timeout [ 1057.195058] ------------[ cut here ]------------ [ 1057.200513] WARNING: CPU: 0 PID: 7645 at sound/core/pcm_native.c:1933 snd_pcm_drop.cold+0x11/0x1e [ 1057.209637] Kernel panic - not syncing: panic_on_warn set ... [ 1057.209637] [ 1057.217836] CPU: 0 PID: 7645 Comm: syz-executor.0 Not tainted 4.19.143-syzkaller #0 [ 1057.225711] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1057.235159] Call Trace: [ 1057.238038] dump_stack+0x1fc/0x2fe [ 1057.241799] panic+0x26a/0x50e [ 1057.245375] ? __warn_printk+0xf3/0xf3 [ 1057.249374] ? snd_pcm_drop.cold+0x11/0x1e [ 1057.253611] ? __probe_kernel_read+0x16c/0x1b0 [ 1057.258197] ? __warn.cold+0x5/0x61 [ 1057.262082] ? __warn+0xe4/0x200 [ 1057.265443] ? snd_pcm_drop.cold+0x11/0x1e [ 1057.269700] __warn.cold+0x20/0x61 [ 1057.273254] ? snd_pcm_drop.cold+0x11/0x1e [ 1057.277583] report_bug+0x262/0x2b0 [ 1057.281223] do_error_trap+0x1d7/0x310 [ 1057.285107] ? math_error+0x310/0x310 [ 1057.288909] ? __irq_work_queue_local+0x101/0x160 [ 1057.295764] ? irq_work_queue+0x29/0x80 [ 1057.299729] ? wake_up_klogd.part.0+0x8c/0xc0 [ 1057.304300] ? vprintk_emit+0x1d0/0x740 [ 1057.308281] ? trace_hardirqs_off_caller+0x69/0x210 [ 1057.313299] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1057.318270] invalid_op+0x14/0x20 [ 1057.321884] RIP: 0010:snd_pcm_drop.cold+0x11/0x1e [ 1057.326730] Code: fb 48 c7 c7 40 91 22 88 e8 a5 44 c6 fb 0f 0b bb fa ff ff ff e9 c8 cb fe ff e8 75 38 db fb 48 c7 c7 40 91 22 88 e8 88 44 c6 fb <0f> 0b 41 bc fa ff ff ff e9 b4 ff fe ff e8 57 38 db fb 48 c7 c7 40 [ 1057.347986] RSP: 0018:ffff88808fa67da0 EFLAGS: 00010282 [ 1057.353361] RAX: 0000000000000024 RBX: ffff88809b258d80 RCX: 0000000000000000 [ 1057.361263] RDX: 0000000000000000 RSI: ffffffff8154d001 RDI: ffffed1011f4cfa6 [ 1057.369639] RBP: ffff88809b258d80 R08: 0000000000000024 R09: 0000000000000000 [ 1057.377176] R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000000 [ 1057.384445] R13: 00000000ffffffff R14: ffff8880a0782140 R15: ffff8882167fb3f8 [ 1057.391896] ? vprintk_func+0x81/0x17e [ 1057.395797] snd_pcm_release_substream.part.0+0x21/0x2f0 [ 1057.401248] snd_pcm_release+0xee/0x1f0 [ 1057.405243] ? snd_pcm_release_substream+0x70/0x70 [ 1057.410205] __fput+0x2ce/0x890 [ 1057.413597] task_work_run+0x148/0x1c0 [ 1057.417594] exit_to_usermode_loop+0x251/0x2a0 [ 1057.422307] do_syscall_64+0x538/0x620 [ 1057.426193] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1057.431570] RIP: 0033:0x45d5b9 [ 1057.434762] Code: 5d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 1057.453750] RSP: 002b:00007fd453ce4c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e9 [ 1057.461541] RAX: 0000000000000000 RBX: 0000000000002ac0 RCX: 000000000045d5b9 [ 1057.468814] RDX: 0000000000000005 RSI: 0000000000000001 RDI: 0000000000000006 [ 1057.476206] RBP: 000000000118d028 R08: 0000000000000000 R09: 0000000000000000 [ 1057.483487] R10: 0000000020000040 R11: 0000000000000246 R12: 000000000118cfec [ 1057.490763] R13: 00007ffc2cf2136f R14: 00007fd453ce59c0 R15: 000000000118cfec [ 1057.499017] Kernel Offset: disabled [ 1057.503350] Rebooting in 86400 seconds..