[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 83.327212][ T27] audit: type=1800 audit(1582780719.535:25): pid=9518 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 83.346932][ T27] audit: type=1800 audit(1582780719.545:26): pid=9518 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 83.368395][ T27] audit: type=1800 audit(1582780719.545:27): pid=9518 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.88' (ECDSA) to the list of known hosts. syzkaller login: [ 92.033034][ T9672] IPVS: ftp: loaded support on port[0] = 21 [ 92.092694][ T9672] chnl_net:caif_netlink_parms(): no params data found [ 92.130741][ T9672] bridge0: port 1(bridge_slave_0) entered blocking state [ 92.138594][ T9672] bridge0: port 1(bridge_slave_0) entered disabled state [ 92.146340][ T9672] device bridge_slave_0 entered promiscuous mode [ 92.156762][ T9672] bridge0: port 2(bridge_slave_1) entered blocking state [ 92.164024][ T9672] bridge0: port 2(bridge_slave_1) entered disabled state [ 92.171789][ T9672] device bridge_slave_1 entered promiscuous mode [ 92.189317][ T9672] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 92.200924][ T9672] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 92.220498][ T9672] team0: Port device team_slave_0 added [ 92.228288][ T9672] team0: Port device team_slave_1 added [ 92.242867][ T9672] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 92.250646][ T9672] 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. [ 92.276588][ T9672] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 92.289593][ T9672] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 92.296569][ T9672] 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. [ 92.322997][ T9672] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 92.389778][ T9672] device hsr_slave_0 entered promiscuous mode [ 92.428096][ T9672] device hsr_slave_1 entered promiscuous mode [ 92.529798][ T9672] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 92.570946][ T9672] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 92.630586][ T9672] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 92.660429][ T9672] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 92.722024][ T9672] bridge0: port 2(bridge_slave_1) entered blocking state [ 92.729206][ T9672] bridge0: port 2(bridge_slave_1) entered forwarding state [ 92.736923][ T9672] bridge0: port 1(bridge_slave_0) entered blocking state [ 92.744175][ T9672] bridge0: port 1(bridge_slave_0) entered forwarding state [ 92.786381][ T9672] 8021q: adding VLAN 0 to HW filter on device bond0 [ 92.802124][ T2731] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 92.813749][ T2731] bridge0: port 1(bridge_slave_0) entered disabled state [ 92.821791][ T2731] bridge0: port 2(bridge_slave_1) entered disabled state [ 92.830272][ T2731] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 92.843743][ T9672] 8021q: adding VLAN 0 to HW filter on device team0 [ 92.854521][ T3053] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 92.863683][ T3053] bridge0: port 1(bridge_slave_0) entered blocking state [ 92.870856][ T3053] bridge0: port 1(bridge_slave_0) entered forwarding state [ 92.889077][ T3053] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 92.897599][ T3053] bridge0: port 2(bridge_slave_1) entered blocking state [ 92.904820][ T3053] bridge0: port 2(bridge_slave_1) entered forwarding state [ 92.916610][ T2731] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 92.926999][ T2731] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 92.940472][ T3053] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 92.956323][ T9672] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 92.968392][ T9672] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 92.980342][ T2731] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 92.989685][ T2731] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 92.998439][ T2731] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 93.016135][ T2741] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 93.024225][ T2741] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 93.036848][ T9672] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 93.055870][ T2741] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 93.078679][ T2741] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 93.087343][ T2741] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 93.096437][ T2741] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 93.105522][ T9672] device veth0_vlan entered promiscuous mode [ 93.119559][ T9672] device veth1_vlan entered promiscuous mode [ 93.141462][ T2731] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 93.152398][ T2731] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 93.163126][ T9672] device veth0_macvtap entered promiscuous mode [ 93.174944][ T9672] device veth1_macvtap entered promiscuous mode [ 93.192660][ T9672] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 93.201141][ T2741] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 93.210219][ T2741] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 93.218369][ T2741] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 93.226863][ T2741] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 93.239272][ T9672] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 93.248344][ T2741] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 93.256874][ T2741] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 93.425606][ T9672] BUG: unable to handle page fault for address: ffffed1018743e07 [ 93.433366][ T9672] #PF: supervisor read access in kernel mode [ 93.439327][ T9672] #PF: error_code(0x0000) - not-present page [ 93.445281][ T9672] PGD 21ffef067 P4D 21ffef067 PUD 12fff6067 PMD 0 [ 93.451821][ T9672] Oops: 0000 [#1] PREEMPT SMP KASAN [ 93.457020][ T9672] CPU: 1 PID: 9672 Comm: syz-executor526 Not tainted 5.6.0-rc3-syzkaller #0 [ 93.465671][ T9672] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 93.475878][ T9672] RIP: 0010:ethnl_update_bitset32.part.0+0x8be/0x1820 [ 93.482763][ T9672] Code: 45 85 e4 0f 84 aa 03 00 00 e8 6e 31 05 fb 48 8b 85 c8 fe ff ff 4e 8d 2c a8 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <0f> b6 14 02 4c 89 e8 83 e0 07 83 c0 03 38 d0 7c 0c 84 d2 74 08 4c [ 93.502806][ T9672] RSP: 0018:ffffc9000660f248 EFLAGS: 00010a03 [ 93.508877][ T9672] RAX: dffffc0000000000 RBX: ffff8880a3a1f03c RCX: ffffffff867055d4 [ 93.516843][ T9672] RDX: 1ffff11018743e07 RSI: ffffffff867055e2 RDI: 0000000000000005 [ 93.524949][ T9672] RBP: ffffc9000660f3b0 R08: ffff88808dc00440 R09: ffffc9000660f318 [ 93.532916][ T9672] R10: fffff52000cc1e68 R11: ffffc9000660f347 R12: 000000000000001f [ 93.540879][ T9672] R13: ffff8880c3a1f03c R14: ffff8880a3a1f04c R15: ffffc9000660f388 [ 93.549105][ T9672] FS: 0000000000d00940(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 93.558018][ T9672] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 93.564589][ T9672] CR2: ffffed1018743e07 CR3: 0000000095c8e000 CR4: 00000000001406e0 [ 93.572555][ T9672] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 93.580527][ T9672] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 93.588485][ T9672] Call Trace: [ 93.591768][ T9672] ? __mutex_lock+0x458/0x13c0 [ 93.596528][ T9672] ? lock_downgrade+0x920/0x920 [ 93.601375][ T9672] ? ethnl_bitmap32_clear+0x390/0x390 [ 93.606777][ T9672] ? mutex_trylock+0x2d0/0x2d0 [ 93.612064][ T9672] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 93.618301][ T9672] ? ethnl_default_notify+0x6b0/0x6b0 [ 93.623660][ T9672] ? sock_sendmsg+0xd7/0x130 [ 93.628239][ T9672] ethnl_update_bitset+0x4d/0x67 [ 93.633282][ T9672] ethnl_set_linkmodes+0x461/0xc30 [ 93.638387][ T9672] ? lock_downgrade+0x920/0x920 [ 93.643226][ T9672] ? linkmodes_prepare_data+0x2a0/0x2a0 [ 93.648756][ T9672] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 93.655107][ T9672] ? apparmor_cred_prepare+0x7b0/0x7b0 [ 93.660563][ T9672] ? kfree_skbmem+0xfb/0x1c0 [ 93.665138][ T9672] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 93.671414][ T9672] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 93.677656][ T9672] ? security_capable+0x95/0xc0 [ 93.682686][ T9672] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 93.688915][ T9672] ? genl_family_rcv_msg_attrs_parse+0x1c6/0x300 [ 93.695331][ T9672] genl_rcv_msg+0x67d/0xea0 [ 93.699816][ T9672] ? genl_rcv_msg+0x67d/0xea0 [ 93.704500][ T9672] ? genl_family_rcv_msg_attrs_parse+0x300/0x300 [ 93.711187][ T9672] ? __kasan_check_read+0x11/0x20 [ 93.716217][ T9672] ? find_held_lock+0x35/0x130 [ 93.720995][ T9672] netlink_rcv_skb+0x177/0x450 [ 93.725761][ T9672] ? genl_family_rcv_msg_attrs_parse+0x300/0x300 [ 93.732092][ T9672] ? netlink_ack+0xb50/0xb50 [ 93.736714][ T9672] ? __kasan_check_write+0x14/0x20 [ 93.741823][ T9672] ? netlink_deliver_tap+0x248/0xbf0 [ 93.747105][ T9672] genl_rcv+0x29/0x40 [ 93.751149][ T9672] netlink_unicast+0x59e/0x7e0 [ 93.755898][ T9672] ? netlink_attachskb+0x870/0x870 [ 93.761029][ T9672] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 93.766746][ T9672] ? __check_object_size+0x3d/0x437 [ 93.771967][ T9672] netlink_sendmsg+0x91c/0xea0 [ 93.776732][ T9672] ? netlink_unicast+0x7e0/0x7e0 [ 93.781729][ T9672] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 93.787368][ T9672] ? apparmor_socket_sendmsg+0x2a/0x30 [ 93.792831][ T9672] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 93.799114][ T9672] ? security_socket_sendmsg+0x8d/0xc0 [ 93.804657][ T9672] ? netlink_unicast+0x7e0/0x7e0 [ 93.809594][ T9672] sock_sendmsg+0xd7/0x130 [ 93.814001][ T9672] ____sys_sendmsg+0x753/0x880 [ 93.818773][ T9672] ? kernel_sendmsg+0x50/0x50 [ 93.823507][ T9672] ? debug_object_active_state+0x28a/0x350 [ 93.829298][ T9672] ? find_held_lock+0x35/0x130 [ 93.834053][ T9672] ___sys_sendmsg+0x100/0x170 [ 93.838714][ T9672] ? sendmsg_copy_msghdr+0x70/0x70 [ 93.843823][ T9672] ? lockdep_hardirqs_on+0x421/0x5e0 [ 93.849149][ T9672] ? __kasan_check_read+0x11/0x20 [ 93.854158][ T9672] ? mark_lock+0xc2/0x1220 [ 93.858555][ T9672] ? __kasan_check_read+0x11/0x20 [ 93.863569][ T9672] ? __lock_acquire+0x16f2/0x4a00 [ 93.868666][ T9672] ? debug_object_deactivate+0x320/0x320 [ 93.874319][ T9672] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 93.880458][ T9672] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 93.887283][ T9672] ? __fget_light+0x1ad/0x270 [ 93.891939][ T9672] ? __fdget+0x1b/0x20 [ 93.895983][ T9672] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 93.902213][ T9672] __sys_sendmsg+0x105/0x1d0 [ 93.906812][ T9672] ? __sys_sendmsg_sock+0xc0/0xc0 [ 93.911814][ T9672] ? lockdep_hardirqs_on+0x421/0x5e0 [ 93.917078][ T9672] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 93.922511][ T9672] ? do_syscall_64+0x26/0x790 [ 93.927187][ T9672] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 93.933248][ T9672] ? do_syscall_64+0x26/0x790 [ 93.937904][ T9672] __x64_sys_sendmsg+0x78/0xb0 [ 93.942643][ T9672] do_syscall_64+0xfa/0x790 [ 93.947138][ T9672] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 93.953007][ T9672] RIP: 0033:0x4484f9 [ 93.956878][ T9672] Code: 43 02 00 85 c0 b8 00 00 00 00 48 0f 44 c3 5b c3 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 d2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 93.976838][ T9672] RSP: 002b:00007ffff7ffdc68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 93.985240][ T9672] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004484f9 [ 93.993189][ T9672] RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 [ 94.001190][ T9672] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 94.009158][ T9672] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 94.017182][ T9672] R13: 0000000000405c40 R14: 0000000000000000 R15: 0000000000000000 [ 94.025149][ T9672] Modules linked in: [ 94.029035][ T9672] CR2: ffffed1018743e07 [ 94.033169][ T9672] ---[ end trace 1131574f2cdfa02e ]--- [ 94.038614][ T9672] RIP: 0010:ethnl_update_bitset32.part.0+0x8be/0x1820 [ 94.045490][ T9672] Code: 45 85 e4 0f 84 aa 03 00 00 e8 6e 31 05 fb 48 8b 85 c8 fe ff ff 4e 8d 2c a8 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <0f> b6 14 02 4c 89 e8 83 e0 07 83 c0 03 38 d0 7c 0c 84 d2 74 08 4c [ 94.065197][ T9672] RSP: 0018:ffffc9000660f248 EFLAGS: 00010a03 [ 94.071244][ T9672] RAX: dffffc0000000000 RBX: ffff8880a3a1f03c RCX: ffffffff867055d4 [ 94.079193][ T9672] RDX: 1ffff11018743e07 RSI: ffffffff867055e2 RDI: 0000000000000005 [ 94.087153][ T9672] RBP: ffffc9000660f3b0 R08: ffff88808dc00440 R09: ffffc9000660f318 [ 94.095196][ T9672] R10: fffff52000cc1e68 R11: ffffc9000660f347 R12: 000000000000001f [ 94.103142][ T9672] R13: ffff8880c3a1f03c R14: ffff8880a3a1f04c R15: ffffc9000660f388 [ 94.111091][ T9672] FS: 0000000000d00940(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 94.120004][ T9672] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 94.126578][ T9672] CR2: ffffed1018743e07 CR3: 0000000095c8e000 CR4: 00000000001406e0 [ 94.134557][ T9672] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 94.142514][ T9672] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 94.150484][ T9672] Kernel panic - not syncing: Fatal exception [ 94.157866][ T9672] Kernel Offset: disabled [ 94.162196][ T9672] Rebooting in 86400 seconds..