[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 56.365417][ T26] audit: type=1800 audit(1570341088.483:25): pid=8725 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 56.393478][ T26] audit: type=1800 audit(1570341088.483:26): pid=8725 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 56.429866][ T26] audit: type=1800 audit(1570341088.483:27): pid=8725 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 '10.128.1.59' (ECDSA) to the list of known hosts. syzkaller login: [ 66.297175][ T8879] IPVS: ftp: loaded support on port[0] = 21 [ 66.350174][ T8879] chnl_net:caif_netlink_parms(): no params data found [ 66.379217][ T8879] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.386820][ T8879] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.394791][ T8879] device bridge_slave_0 entered promiscuous mode [ 66.402939][ T8879] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.410137][ T8879] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.417944][ T8879] device bridge_slave_1 entered promiscuous mode [ 66.434063][ T8879] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 66.444508][ T8879] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 66.461971][ T8879] team0: Port device team_slave_0 added [ 66.469262][ T8879] team0: Port device team_slave_1 added [ 66.524860][ T8879] device hsr_slave_0 entered promiscuous mode [ 66.562861][ T8879] device hsr_slave_1 entered promiscuous mode [ 66.640336][ T8879] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.647678][ T8879] bridge0: port 2(bridge_slave_1) entered forwarding state [ 66.655509][ T8879] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.662616][ T8879] bridge0: port 1(bridge_slave_0) entered forwarding state [ 66.696853][ T8879] 8021q: adding VLAN 0 to HW filter on device bond0 [ 66.707868][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 66.727559][ T22] bridge0: port 1(bridge_slave_0) entered disabled state [ 66.735843][ T22] bridge0: port 2(bridge_slave_1) entered disabled state [ 66.744424][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 66.756282][ T8879] 8021q: adding VLAN 0 to HW filter on device team0 [ 66.766779][ T2961] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 66.775720][ T2961] bridge0: port 1(bridge_slave_0) entered blocking state [ 66.782827][ T2961] bridge0: port 1(bridge_slave_0) entered forwarding state [ 66.804344][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 66.813251][ T22] bridge0: port 2(bridge_slave_1) entered blocking state [ 66.820298][ T22] bridge0: port 2(bridge_slave_1) entered forwarding state [ 66.828493][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 66.836969][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 66.845371][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready executing program [ 66.854390][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 66.865864][ T2961] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 66.875751][ T8879] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 66.891903][ T8879] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 66.930985][ T8879] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 66.938816][ T8879] #PF: supervisor instruction fetch in kernel mode [ 66.945300][ T8879] #PF: error_code(0x0010) - not-present page [ 66.951249][ T8879] PGD a33cb067 P4D a33cb067 PUD 947d0067 PMD 0 [ 66.957556][ T8879] Oops: 0010 [#1] PREEMPT SMP KASAN [ 66.962739][ T8879] CPU: 1 PID: 8879 Comm: syz-executor710 Not tainted 5.4.0-rc1+ #0 [ 66.970683][ T8879] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.980717][ T8879] RIP: 0010:0x0 [ 66.984160][ T8879] Code: Bad RIP value. [ 66.988207][ T8879] RSP: 0018:ffff8880868cf828 EFLAGS: 00010246 [ 66.994340][ T8879] RAX: 0000000000000000 RBX: ffff88808daa31c0 RCX: 1ffff11011b546cc [ 67.002284][ T8879] RDX: 0000000000000002 RSI: 0000000000000000 RDI: ffff8880a6eb0b00 [ 67.010229][ T8879] RBP: ffff8880868cf860 R08: ffff8880a5e60540 R09: ffffed1011b54681 [ 67.018247][ T8879] R10: ffffed1011b54680 R11: ffff88808daa3407 R12: 0000000000000002 [ 67.026206][ T8879] R13: 0000000000000304 R14: ffff8880a6eb0b00 R15: 0000000000000000 [ 67.034158][ T8879] FS: 0000000000000000(0000) GS:ffff8880ae900000(0063) knlGS:0000000008583840 [ 67.043062][ T8879] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 67.049880][ T8879] CR2: ffffffffffffffd6 CR3: 000000008e839000 CR4: 00000000001406e0 [ 67.057828][ T8879] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 67.065777][ T8879] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 67.073738][ T8879] Call Trace: [ 67.077008][ T8879] xsk_poll+0x1e7/0x5a0 [ 67.081141][ T8879] ? xsk_setsockopt+0x730/0x730 [ 67.085985][ T8879] sock_poll+0x15e/0x480 [ 67.090216][ T8879] ? do_recvmmsg+0x7a0/0x7a0 [ 67.094801][ T8879] do_sys_poll+0x63c/0xdd0 [ 67.099196][ T8879] ? compat_core_sys_select+0x770/0x770 [ 67.104716][ T8879] ? __rtnl_unlock+0x36/0x90 [ 67.109288][ T8879] ? find_held_lock+0x35/0x130 [ 67.114032][ T8879] ? lock_downgrade+0x920/0x920 [ 67.118865][ T8879] ? __kasan_check_write+0x14/0x20 [ 67.123970][ T8879] ? __mutex_unlock_slowpath+0xf8/0x6b0 [ 67.129511][ T8879] ? find_held_lock+0x35/0x130 [ 67.134250][ T8879] ? poll_initwait+0x180/0x180 [ 67.138995][ T8879] ? poll_freewait+0x260/0x260 [ 67.143846][ T8879] ? mutex_unlock+0xd/0x10 [ 67.148293][ T8879] ? __rtnl_unlock+0x7c/0x90 [ 67.152897][ T8879] ? netdev_run_todo+0x559/0x7d0 [ 67.157863][ T8879] ? __kasan_check_write+0x14/0x20 [ 67.162963][ T8879] ? __mutex_unlock_slowpath+0xf8/0x6b0 [ 67.168665][ T8879] ? register_netdev+0x50/0x50 [ 67.173409][ T8879] ? wait_for_completion+0x440/0x440 [ 67.178699][ T8879] ? _raw_spin_unlock_irqrestore+0xa4/0xe0 [ 67.184490][ T8879] ? xdp_add_sk_umem+0x134/0x1c0 [ 67.189425][ T8879] ? rtnl_unlock+0xe/0x10 [ 67.193755][ T8879] ? xsk_bind+0x1e7/0x1190 [ 67.198160][ T8879] ? xsk_clear_rx_need_wakeup+0x100/0x100 [ 67.203879][ T8879] ? apparmor_socket_bind+0xb6/0x160 [ 67.209149][ T8879] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 67.215372][ T8879] ? security_socket_bind+0x8d/0xc0 [ 67.220548][ T8879] ? set_compat_user_sigmask+0x15b/0x1d0 [ 67.226168][ T8879] ? set_user_sigmask+0x1e0/0x1e0 [ 67.231169][ T8879] ? __ia32_sys_socketpair+0xf0/0xf0 [ 67.236439][ T8879] __ia32_compat_sys_ppoll_time32+0x257/0x2d0 [ 67.242529][ T8879] ? __x32_compat_sys_pselect6_time32+0x2f0/0x2f0 [ 67.248943][ T8879] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 67.254438][ T8879] ? do_fast_syscall_32+0xd1/0xdb3 [ 67.259546][ T8879] ? entry_SYSENTER_compat+0x70/0x7f [ 67.264834][ T8879] ? do_fast_syscall_32+0xd1/0xdb3 [ 67.269940][ T8879] ? lockdep_hardirqs_on+0x421/0x5e0 [ 67.275463][ T8879] ? trace_hardirqs_on+0x67/0x240 [ 67.280466][ T8879] do_fast_syscall_32+0x27b/0xdb3 [ 67.285471][ T8879] entry_SYSENTER_compat+0x70/0x7f [ 67.290569][ T8879] RIP: 0023:0xf7f54a29 [ 67.294626][ T8879] Code: b8 80 96 98 00 eb cc 8b 04 24 c3 8b 1c 24 c3 8b 34 24 c3 8b 3c 24 c3 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 67.314293][ T8879] RSP: 002b:00000000ffcff69c EFLAGS: 00000217 ORIG_RAX: 0000000000000135 [ 67.322703][ T8879] RAX: ffffffffffffffda RBX: 0000000020000040 RCX: 0000000000000006 [ 67.330657][ T8879] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 67.338626][ T8879] RBP: 0000000020000100 R08: 0000000000000000 R09: 0000000000000000 [ 67.346573][ T8879] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 67.354522][ T8879] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 67.362488][ T8879] Modules linked in: [ 67.366358][ T8879] CR2: 0000000000000000 [ 67.373736][ T8879] ---[ end trace 7f4e6b0b65d150f2 ]--- [ 67.379238][ T8879] RIP: 0010:0x0 [ 67.382769][ T8879] Code: Bad RIP value. [ 67.386829][ T8879] RSP: 0018:ffff8880868cf828 EFLAGS: 00010246 [ 67.393636][ T8879] RAX: 0000000000000000 RBX: ffff88808daa31c0 RCX: 1ffff11011b546cc [ 67.401606][ T8879] RDX: 0000000000000002 RSI: 0000000000000000 RDI: ffff8880a6eb0b00 [ 67.409840][ T8879] RBP: ffff8880868cf860 R08: ffff8880a5e60540 R09: ffffed1011b54681 [ 67.417911][ T8879] R10: ffffed1011b54680 R11: ffff88808daa3407 R12: 0000000000000002 [ 67.426191][ T8879] R13: 0000000000000304 R14: ffff8880a6eb0b00 R15: 0000000000000000 [ 67.434469][ T8879] FS: 0000000000000000(0000) GS:ffff8880ae900000(0063) knlGS:0000000008583840 [ 67.443512][ T8879] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 67.450108][ T8879] CR2: ffffffffffffffd6 CR3: 000000008e839000 CR4: 00000000001406e0 [ 67.458316][ T8879] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 67.466377][ T8879] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 67.474768][ T8879] Kernel panic - not syncing: Fatal exception [ 67.482114][ T8879] Kernel Offset: disabled [ 67.486439][ T8879] Rebooting in 86400 seconds..