[ 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 Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ 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 '10.128.0.133' (ECDSA) to the list of known hosts. syzkaller login: [ 63.230572][ T28] audit: type=1400 audit(1593634765.624:8): avc: denied { execmem } for pid=6910 comm="syz-executor252" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 63.251011][ T6911] IPVS: ftp: loaded support on port[0] = 21 [ 63.358939][ T6911] chnl_net:caif_netlink_parms(): no params data found [ 63.418600][ T6911] bridge0: port 1(bridge_slave_0) entered blocking state [ 63.427633][ T6911] bridge0: port 1(bridge_slave_0) entered disabled state [ 63.438034][ T6911] device bridge_slave_0 entered promiscuous mode [ 63.448349][ T6911] bridge0: port 2(bridge_slave_1) entered blocking state [ 63.456843][ T6911] bridge0: port 2(bridge_slave_1) entered disabled state [ 63.466060][ T6911] device bridge_slave_1 entered promiscuous mode [ 63.487817][ T6911] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 63.500980][ T6911] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 63.527124][ T6911] team0: Port device team_slave_0 added [ 63.536833][ T6911] team0: Port device team_slave_1 added [ 63.557405][ T6911] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 63.565307][ T6911] 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. [ 63.599489][ T6911] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 63.613585][ T6911] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 63.621734][ T6911] 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. [ 63.649754][ T6911] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 63.718118][ T6911] device hsr_slave_0 entered promiscuous mode [ 63.774729][ T6911] device hsr_slave_1 entered promiscuous mode [ 63.905581][ T6911] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 63.947060][ T6911] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 64.006590][ T6911] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 64.066760][ T6911] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 64.152409][ T6911] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.160957][ T6911] bridge0: port 2(bridge_slave_1) entered forwarding state [ 64.169495][ T6911] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.177854][ T6911] bridge0: port 1(bridge_slave_0) entered forwarding state [ 64.226480][ T6911] 8021q: adding VLAN 0 to HW filter on device bond0 [ 64.241339][ T2486] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 64.251697][ T2486] bridge0: port 1(bridge_slave_0) entered disabled state [ 64.260697][ T2486] bridge0: port 2(bridge_slave_1) entered disabled state [ 64.269987][ T2486] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 64.283274][ T6911] 8021q: adding VLAN 0 to HW filter on device team0 [ 64.296077][ T2839] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 64.305009][ T2839] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.313090][ T2839] bridge0: port 1(bridge_slave_0) entered forwarding state [ 64.328775][ T3502] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 64.338071][ T3502] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.346361][ T3502] bridge0: port 2(bridge_slave_1) entered forwarding state [ 64.358358][ T2839] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 64.374746][ T2839] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 64.383535][ T2839] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 64.393178][ T2839] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 64.406628][ T2839] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 64.414783][ T2839] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 64.425749][ T2839] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 64.438003][ T3502] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 64.447392][ T3502] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 64.460497][ T2839] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 64.471468][ T2839] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 64.482616][ T6911] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 64.500818][ T2839] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 64.508772][ T2839] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 64.522218][ T6911] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 64.541977][ T3502] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 64.552351][ T3502] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 64.572876][ T6911] device veth0_vlan entered promiscuous mode [ 64.580716][ T2486] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 64.589336][ T2486] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 64.598815][ T2486] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 64.607979][ T2486] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 64.619613][ T6911] device veth1_vlan entered promiscuous mode [ 64.639688][ T2839] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 64.648217][ T2839] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 64.657704][ T2839] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 64.666355][ T2839] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 64.678805][ T6911] device veth0_macvtap entered promiscuous mode [ 64.690648][ T6911] device veth1_macvtap entered promiscuous mode [ 64.708012][ T6911] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 64.715697][ T2486] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 64.725827][ T2486] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 64.734662][ T2486] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 64.743189][ T2486] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 64.756243][ T6911] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 64.764900][ T2486] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 64.773465][ T2486] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 65.136517][ T7121] general protection fault, probably for non-canonical address 0xdffffc000000001e: 0000 [#1] PREEMPT SMP KASAN [ 65.148441][ T7121] KASAN: null-ptr-deref in range [0x00000000000000f0-0x00000000000000f7] [ 65.156941][ T7121] CPU: 0 PID: 7121 Comm: systemd-udevd Not tainted 5.8.0-rc3-syzkaller #0 [ 65.165428][ T7121] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 65.176226][ T7121] RIP: 0010:bdev_read_page+0x35/0x290 [ 65.181593][ T7121] Code: f5 53 48 89 fb 48 83 ec 08 48 89 14 24 e8 03 12 a5 ff 48 8d bb f0 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 e7 01 00 00 4c 8b bb f0 00 00 00 48 b8 00 00 00 [ 65.201299][ T7121] RSP: 0018:ffffc90001b57530 EFLAGS: 00010206 [ 65.207344][ T7121] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff81cf749a [ 65.215306][ T7121] RDX: 000000000000001e RSI: ffffffff81cea51d RDI: 00000000000000f0 [ 65.223375][ T7121] RBP: fff89719b6b00000 R08: 0000000000000001 R09: ffffea0002871787 [ 65.231428][ T7121] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 65.239559][ T7121] R13: 0000000000000000 R14: 0000000000000000 R15: ffffc90001b57748 [ 65.247947][ T7121] FS: 00007fde67d458c0(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 65.256951][ T7121] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 65.263510][ T7121] CR2: 000055f65ed31138 CR3: 00000000a78d8000 CR4: 00000000001406f0 [ 65.271491][ T7121] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 65.279446][ T7121] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 65.287397][ T7121] Call Trace: [ 65.290672][ T7121] do_mpage_readpage+0x10ca/0x1ef0 [ 65.295762][ T7121] ? lock_downgrade+0x820/0x820 [ 65.300590][ T7121] ? mpage_writepage+0x1b0/0x1b0 [ 65.305504][ T7121] ? __xa_clear_mark+0x110/0x110 [ 65.310415][ T7121] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 65.316371][ T7121] ? get_mem_cgroup_from_mm+0x13/0x450 [ 65.321811][ T7121] ? __lock_acquire+0x16e3/0x56e0 [ 65.326820][ T7121] mpage_readahead+0x3a2/0x870 [ 65.331559][ T7121] ? do_mpage_readpage+0x1ef0/0x1ef0 [ 65.336825][ T7121] ? __blkdev_direct_IO_simple+0x940/0x940 [ 65.342629][ T7121] ? lock_downgrade+0x820/0x820 [ 65.347934][ T7121] ? blkdev_write_begin+0x40/0x40 [ 65.352946][ T7121] read_pages+0x1df/0x8d0 [ 65.357346][ T7121] ? read_cache_pages+0x750/0x750 [ 65.362462][ T7121] ? add_to_page_cache_lru+0x2ab/0x5b0 [ 65.367897][ T7121] ? 0xffffffff81000000 [ 65.372064][ T7121] ? alloc_pages_current+0x18f/0x280 [ 65.377345][ T7121] ? __page_cache_alloc+0x10b/0x450 [ 65.382524][ T7121] page_cache_readahead_unbounded+0x572/0x850 [ 65.388579][ T7121] ? lock_acquire+0x1f1/0xad0 [ 65.393239][ T7121] ? read_pages+0x8d0/0x8d0 [ 65.399029][ T7121] ? blk_cgroup_congested+0x1f9/0x3e0 [ 65.404387][ T7121] force_page_cache_readahead+0x2e9/0x460 [ 65.410087][ T7121] page_cache_sync_readahead+0x113/0x130 [ 65.415788][ T7121] generic_file_buffered_read+0x108c/0x27e0 [ 65.421655][ T7121] ? do_wp_page+0x8e7/0x1950 [ 65.426222][ T7121] generic_file_read_iter+0x396/0x4e0 [ 65.431569][ T7121] blkdev_read_iter+0x11b/0x180 [ 65.436399][ T7121] new_sync_read+0x41a/0x6e0 [ 65.440982][ T7121] ? vfs_dedupe_file_range+0x780/0x780 [ 65.446421][ T7121] ? inode_security+0x102/0x130 [ 65.451334][ T7121] ? security_file_permission+0x239/0x470 [ 65.457030][ T7121] __vfs_read+0xc9/0x100 [ 65.461250][ T7121] vfs_read+0x1f6/0x420 [ 65.465385][ T7121] ksys_read+0x12d/0x250 [ 65.469710][ T7121] ? kernel_write+0x120/0x120 [ 65.474367][ T7121] do_syscall_64+0x60/0xe0 [ 65.478936][ T7121] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 65.485187][ T7121] RIP: 0033:0x7fde66e8c210 [ 65.489609][ T7121] Code: Bad RIP value. [ 65.493648][ T7121] RSP: 002b:00007fff13285fd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 65.502053][ T7121] RAX: ffffffffffffffda RBX: 000055f65ed30d00 RCX: 00007fde66e8c210 [ 65.510003][ T7121] RDX: 0000000000000400 RSI: 000055f65ed30d28 RDI: 000000000000000f [ 65.517955][ T7121] RBP: 000055f65ed34e80 R08: 00007fde66e76f88 R09: 0000000000000430 [ 65.526099][ T7121] R10: 000000000000006d R11: 0000000000000246 R12: 0000000000000000 [ 65.534057][ T7121] R13: 0000000000000400 R14: 000055f65ed34ed0 R15: 0000000000000400 [ 65.542042][ T7121] Modules linked in: [ 65.564057][ T7121] ---[ end trace 5b6f53a9af7ced6f ]--- [ 65.569689][ T7121] RIP: 0010:bdev_read_page+0x35/0x290 [ 65.583695][ T7121] Code: f5 53 48 89 fb 48 83 ec 08 48 89 14 24 e8 03 12 a5 ff 48 8d bb f0 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 e7 01 00 00 4c 8b bb f0 00 00 00 48 b8 00 00 00 [ 65.604109][ T7121] RSP: 0018:ffffc90001b57530 EFLAGS: 00010206 [ 65.611263][ T7121] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff81cf749a [ 65.619661][ T7121] RDX: 000000000000001e RSI: ffffffff81cea51d RDI: 00000000000000f0 [ 65.628008][ T7121] RBP: fff89719b6b00000 R08: 0000000000000001 R09: ffffea0002871787 [ 65.636278][ T7121] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 65.644696][ T7121] R13: 0000000000000000 R14: 0000000000000000 R15: ffffc90001b57748 [ 65.652671][ T7121] FS: 00007fde67d458c0(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 65.661809][ T7121] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 65.668720][ T7121] CR2: 00007f5807cc2ab4 CR3: 00000000a78d8000 CR4: 00000000001406f0 [ 65.676983][ T7121] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 65.685124][ T7121] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 65.693086][ T7121] Kernel panic - not syncing: Fatal exception [ 65.700797][ T7121] Kernel Offset: disabled [ 65.705122][ T7121] Rebooting in 86400 seconds..