[ 41.431208][ T26] audit: type=1800 audit(1570051838.244:26): pid=7757 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 41.461471][ T26] audit: type=1800 audit(1570051838.254:27): pid=7757 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 41.501741][ T26] audit: type=1800 audit(1570051838.254:28): pid=7757 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 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. [ 42.063953][ T26] audit: type=1800 audit(1570051838.914:29): pid=7757 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.15.204' (ECDSA) to the list of known hosts. syzkaller login: [ 56.576310][ T7913] IPVS: ftp: loaded support on port[0] = 21 [ 56.624134][ T7913] chnl_net:caif_netlink_parms(): no params data found [ 56.647527][ T7913] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.655664][ T7913] bridge0: port 1(bridge_slave_0) entered disabled state [ 56.663636][ T7913] device bridge_slave_0 entered promiscuous mode [ 56.671980][ T7913] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.679070][ T7913] bridge0: port 2(bridge_slave_1) entered disabled state [ 56.686951][ T7913] device bridge_slave_1 entered promiscuous mode [ 56.701828][ T7913] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 56.712980][ T7913] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 56.729505][ T7913] team0: Port device team_slave_0 added [ 56.737050][ T7913] team0: Port device team_slave_1 added [ 56.793403][ T7913] device hsr_slave_0 entered promiscuous mode [ 56.861280][ T7913] device hsr_slave_1 entered promiscuous mode [ 56.919572][ T7913] bridge0: port 2(bridge_slave_1) entered blocking state [ 56.926845][ T7913] bridge0: port 2(bridge_slave_1) entered forwarding state [ 56.934684][ T7913] bridge0: port 1(bridge_slave_0) entered blocking state [ 56.941797][ T7913] bridge0: port 1(bridge_slave_0) entered forwarding state [ 56.969360][ T7913] 8021q: adding VLAN 0 to HW filter on device bond0 [ 56.983302][ T3009] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 56.994027][ T3009] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.002113][ T3009] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.009712][ T3009] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 57.020383][ T7913] 8021q: adding VLAN 0 to HW filter on device team0 [ 57.031883][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 57.040519][ T5] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.047636][ T5] bridge0: port 1(bridge_slave_0) entered forwarding state [ 57.058930][ T3009] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 57.067771][ T3009] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.074862][ T3009] bridge0: port 2(bridge_slave_1) entered forwarding state [ 57.090036][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 57.099504][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 57.109795][ T3009] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 57.122619][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 57.134239][ T7913] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 57.145924][ T7913] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 57.155590][ T3009] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready executing program [ 57.173975][ T7913] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 57.251938][ T7923] [ 57.254331][ T7923] ================================================ [ 57.260805][ T7923] WARNING: lock held when returning to user space! [ 57.267380][ T7923] 5.4.0-rc1 #0 Not tainted [ 57.271788][ T7923] ------------------------------------------------ [ 57.278261][ T7923] syz-executor670/7923 is leaving the kernel with locks still held! [ 57.286293][ T7923] 1 lock held by syz-executor670/7923: [ 57.291739][ T7923] #0: ffffffff888d3cc0 (rcu_read_lock){....}, at: rcu_lock_acquire+0x4/0x30 [ 57.301361][ T7923] ------------[ cut here ]------------ [ 57.306835][ T7923] WARNING: CPU: 0 PID: 7923 at kernel/rcu/tree_plugin.h:293 rcu_note_context_switch+0xdde/0xee0 [ 57.317228][ T7923] Kernel panic - not syncing: panic_on_warn set ... [ 57.323800][ T7923] CPU: 0 PID: 7923 Comm: syz-executor670 Not tainted 5.4.0-rc1 #0 [ 57.331583][ T7923] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.341625][ T7923] Call Trace: [ 57.344895][ T7923] dump_stack+0x1d8/0x2f8 [ 57.349202][ T7923] panic+0x25c/0x799 [ 57.353091][ T7923] ? __warn+0x105/0x210 [ 57.357250][ T7923] ? rcu_note_context_switch+0xdde/0xee0 [ 57.362863][ T7923] __warn+0x20e/0x210 [ 57.366844][ T7923] ? rcu_note_context_switch+0xdde/0xee0 [ 57.372471][ T7923] report_bug+0x1b6/0x2f0 [ 57.376806][ T7923] ? rcu_note_context_switch+0xdde/0xee0 [ 57.382560][ T7923] do_error_trap+0xd7/0x440 [ 57.387069][ T7923] do_invalid_op+0x36/0x40 [ 57.391473][ T7923] ? rcu_note_context_switch+0xdde/0xee0 [ 57.397264][ T7923] invalid_op+0x23/0x30 [ 57.401411][ T7923] RIP: 0010:rcu_note_context_switch+0xdde/0xee0 [ 57.407641][ T7923] Code: c8 73 4b 00 e9 b8 f3 ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 22 f3 ff ff 48 89 df e8 4b 73 4b 00 83 3b 00 0f 8e 1a f3 ff ff <0f> 0b e9 13 f3 ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c c9 f2 ff [ 57.427668][ T7923] RSP: 0000:ffff8880921bfd20 EFLAGS: 00010002 [ 57.433716][ T7923] RAX: 1ffff11012bc6100 RBX: ffff888095e30978 RCX: ffffffff81608604 [ 57.441663][ T7923] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff88be39a0 [ 57.449619][ T7923] RBP: ffff8880921bfe00 R08: dffffc0000000000 R09: fffffbfff117c735 [ 57.457672][ T7923] R10: fffffbfff117c735 R11: 0000000000000000 R12: dffffc0000000000 [ 57.465645][ T7923] R13: ffff888095e30600 R14: 0000000000000000 R15: ffff8880aea35740 [ 57.473786][ T7923] ? trace_rcu_utilization+0x124/0x1d0 [ 57.479221][ T7923] ? __schedule+0x753/0xb80 [ 57.483704][ T7923] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 57.489138][ T7923] ? trace_irq_enable_rcuidle+0x23/0x1e0 [ 57.494751][ T7923] ? trace_hardirqs_on_caller+0x46/0x80 [ 57.500368][ T7923] ? retint_kernel+0x2b/0x2b [ 57.504941][ T7923] ? trace_irq_disable_rcuidle+0x23/0x1e0 [ 57.510721][ T7923] __schedule+0xce/0xb80 [ 57.514942][ T7923] schedule+0x131/0x1e0 [ 57.519084][ T7923] prepare_exit_to_usermode+0x2aa/0x580 [ 57.524614][ T7923] retint_user+0x8/0x18 [ 57.528920][ T7923] RIP: 0033:0x446fb9 [ 57.532797][ T7923] Code: e8 8c 19 03 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 4b 0e fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 57.552816][ T7923] RSP: 002b:00007fd680470db8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 57.561549][ T7923] RAX: 0000000000000000 RBX: 00000000006ddc28 RCX: 0000000000446fb9 [ 57.569504][ T7923] RDX: 0000000000446fb9 RSI: 0000000000000000 RDI: 0000000100000008 [ 57.577449][ T7923] RBP: 00000000006ddc20 R08: 0000000000000000 R09: 0000000000000000 [ 57.585396][ T7923] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006ddc2c [ 57.593341][ T7923] R13: 00007fffb42e414f R14: 00007fd6804719c0 R15: 0000000000000000 [ 57.602724][ T7923] Kernel Offset: disabled [ 57.607069][ T7923] Rebooting in 86400 seconds..