[ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.222' (ECDSA) to the list of known hosts. 2020/07/13 21:21:10 parsed 1 programs 2020/07/13 21:21:10 executed programs: 0 syzkaller login: [ 66.492396][ T29] audit: type=1400 audit(1594675270.522:8): avc: denied { execmem } for pid=6819 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 66.540220][ T6820] IPVS: ftp: loaded support on port[0] = 21 [ 66.650003][ T6820] chnl_net:caif_netlink_parms(): no params data found [ 66.702632][ T6820] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.710870][ T6820] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.720239][ T6820] device bridge_slave_0 entered promiscuous mode [ 66.729634][ T6820] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.737468][ T6820] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.746533][ T6820] device bridge_slave_1 entered promiscuous mode [ 66.766415][ T6820] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 66.777600][ T6820] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 66.800453][ T6820] team0: Port device team_slave_0 added [ 66.808712][ T6820] team0: Port device team_slave_1 added [ 66.826564][ T6820] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 66.833546][ T6820] 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. [ 66.860451][ T6820] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 66.873291][ T6820] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 66.880868][ T6820] 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. [ 66.907620][ T6820] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 66.988688][ T6820] device hsr_slave_0 entered promiscuous mode [ 67.045584][ T6820] device hsr_slave_1 entered promiscuous mode [ 67.194802][ T6820] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 67.238928][ T6820] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 67.287130][ T6820] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 67.347300][ T6820] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 67.402092][ T6820] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.409331][ T6820] bridge0: port 2(bridge_slave_1) entered forwarding state [ 67.417446][ T6820] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.424752][ T6820] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.470607][ T6820] 8021q: adding VLAN 0 to HW filter on device bond0 [ 67.484478][ T2582] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 67.496100][ T2582] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.504000][ T2582] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.513154][ T2582] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 67.527129][ T6820] 8021q: adding VLAN 0 to HW filter on device team0 [ 67.538436][ T2500] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 67.547308][ T2500] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.554374][ T2500] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.576765][ T2500] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 67.586813][ T2500] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.593894][ T2500] bridge0: port 2(bridge_slave_1) entered forwarding state [ 67.603010][ T2500] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 67.612907][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 67.624422][ T2582] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 67.639198][ T2666] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 67.647673][ T2666] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 67.661667][ T6820] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 67.674153][ T6820] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 67.682694][ T2582] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 67.691949][ T2582] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 67.711548][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 67.720090][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 67.732935][ T6820] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 67.756659][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 67.766445][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 67.787209][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 67.795850][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 67.806869][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 67.815486][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 67.826268][ T6820] device veth0_vlan entered promiscuous mode [ 67.838485][ T6820] device veth1_vlan entered promiscuous mode [ 67.861551][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 67.870932][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 67.879861][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 67.888944][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 67.900417][ T6820] device veth0_macvtap entered promiscuous mode [ 67.910315][ T6820] device veth1_macvtap entered promiscuous mode [ 67.927084][ T6820] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 67.934896][ T2582] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 67.943052][ T2582] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 67.951827][ T2582] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 67.960600][ T2582] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 67.975399][ T6820] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 67.982868][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 67.992839][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready 2020/07/13 21:21:16 executed programs: 25 2020/07/13 21:21:21 executed programs: 79 [ 79.339168][ T5] ------------[ cut here ]------------ [ 79.346694][ T5] WARNING: CPU: 0 PID: 5 at fs/read_write.c:517 __kernel_write+0x427/0x500 [ 79.357513][ T5] Kernel panic - not syncing: panic_on_warn set ... [ 79.365109][ T5] CPU: 0 PID: 5 Comm: kworker/0:0 Not tainted 5.8.0-rc5-syzkaller #0 [ 79.373218][ T5] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 79.383283][ T5] Workqueue: events p9_write_work [ 79.388304][ T5] Call Trace: [ 79.391579][ T5] dump_stack+0x18f/0x20d [ 79.395897][ T5] panic+0x2e3/0x75c [ 79.399876][ T5] ? __warn_printk+0xf3/0xf3 [ 79.404451][ T5] ? printk+0xba/0xed [ 79.408413][ T5] ? log_store.cold+0x16/0x16 [ 79.413071][ T5] ? __warn.cold+0x5/0x45 [ 79.417396][ T5] ? __warn+0xd6/0x1f2 [ 79.421450][ T5] ? __kernel_write+0x427/0x500 [ 79.426277][ T5] __warn.cold+0x20/0x45 [ 79.430495][ T5] ? __kernel_write+0x427/0x500 [ 79.435556][ T5] report_bug+0x1bd/0x210 [ 79.439897][ T5] handle_bug+0x38/0x90 [ 79.444080][ T5] exc_invalid_op+0x13/0x40 [ 79.448588][ T5] asm_exc_invalid_op+0x12/0x20 [ 79.453438][ T5] RIP: 0010:__kernel_write+0x427/0x500 [ 79.458886][ T5] Code: fd ff ff e8 fb 07 b6 ff 45 31 c9 45 31 c0 b9 01 00 00 00 4c 89 f2 89 ee 4c 89 ef e8 f3 17 12 00 e9 35 ff ff ff e8 d9 07 b6 ff <0f> 0b 49 c7 c4 f7 ff ff ff e9 00 fe ff ff 4c 89 f7 e8 c3 6b f5 ff [ 79.478497][ T5] RSP: 0018:ffffc90000cbfc20 EFLAGS: 00010293 [ 79.491500][ T5] RAX: 0000000000000000 RBX: ffff88808b2b6840 RCX: ffffffff81bdae68 [ 79.499462][ T5] RDX: ffff8880a95a2140 RSI: ffffffff81bdb227 RDI: 0000000000000005 [ 79.507431][ T5] RBP: 0000000000000000 R08: 0000000000000001 R09: ffff8880a7c121c7 [ 79.515393][ T5] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000015 [ 79.523344][ T5] R13: ffff88808b2b6958 R14: ffff88808b2b68c4 R15: 00000000040a0001 [ 79.531319][ T5] ? __kernel_write+0x68/0x500 [ 79.536057][ T5] ? __kernel_write+0x427/0x500 [ 79.540888][ T5] ? rw_verify_area+0x11d/0x360 [ 79.545715][ T5] kernel_write+0xe2/0x200 [ 79.550129][ T5] p9_write_work+0x25e/0xca0 [ 79.554705][ T5] process_one_work+0x94c/0x1670 [ 79.559638][ T5] ? lock_release+0x8d0/0x8d0 [ 79.564305][ T5] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 79.569655][ T5] ? rwlock_bug.part.0+0x90/0x90 [ 79.574580][ T5] ? lockdep_hardirqs_off+0x66/0xa0 [ 79.579755][ T5] worker_thread+0x64c/0x1120 [ 79.584419][ T5] ? process_one_work+0x1670/0x1670 [ 79.589605][ T5] kthread+0x3b5/0x4a0 [ 79.593665][ T5] ? __kthread_bind_mask+0xc0/0xc0 [ 79.598750][ T5] ? __kthread_bind_mask+0xc0/0xc0 [ 79.603848][ T5] ret_from_fork+0x1f/0x30 [ 79.609541][ T5] Kernel Offset: disabled [ 79.613914][ T5] Rebooting in 86400 seconds..