[ 55.662830][ T26] audit: type=1800 audit(1569107447.439:25): pid=8527 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 55.701181][ T26] audit: type=1800 audit(1569107447.439:26): pid=8527 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 55.728259][ T26] audit: type=1800 audit(1569107447.439:27): pid=8527 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. [ 56.464963][ T8600] sshd (8600) used greatest stack depth: 22984 bytes left [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.159' (ECDSA) to the list of known hosts. syzkaller login: [ 67.021461][ T8680] IPVS: ftp: loaded support on port[0] = 21 [ 67.072842][ T8680] chnl_net:caif_netlink_parms(): no params data found [ 67.097639][ T8680] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.105356][ T8680] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.113044][ T8680] device bridge_slave_0 entered promiscuous mode [ 67.120651][ T8680] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.127923][ T8680] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.135972][ T8680] device bridge_slave_1 entered promiscuous mode [ 67.150947][ T8680] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 67.161709][ T8680] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 67.179854][ T8680] team0: Port device team_slave_0 added [ 67.187080][ T8680] team0: Port device team_slave_1 added [ 67.243540][ T8680] device hsr_slave_0 entered promiscuous mode [ 67.301476][ T8680] device hsr_slave_1 entered promiscuous mode [ 67.359073][ T8680] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.366244][ T8680] bridge0: port 2(bridge_slave_1) entered forwarding state [ 67.373943][ T8680] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.380981][ T8680] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.413178][ T8680] 8021q: adding VLAN 0 to HW filter on device bond0 [ 67.424115][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 67.433888][ T12] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.452290][ T12] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.459968][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 67.471444][ T8680] 8021q: adding VLAN 0 to HW filter on device team0 [ 67.483888][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 67.492469][ T17] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.499492][ T17] bridge0: port 1(bridge_slave_0) entered forwarding state [ 67.507101][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 67.516317][ T17] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.523403][ T17] bridge0: port 2(bridge_slave_1) entered forwarding state [ 67.542754][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 67.551838][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 67.560245][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 67.568956][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 67.580905][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 67.590460][ T8680] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready executing program [ 67.608447][ T8680] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 67.643667][ T8690] BUG: sleeping function called from invalid context at kernel/locking/mutex.c:935 [ 67.653036][ T8690] in_atomic(): 1, irqs_disabled(): 0, pid: 8690, name: syz-executor387 [ 67.661304][ T8690] 2 locks held by syz-executor387/8690: [ 67.666833][ T8690] #0: ffffffff8999eb60 (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x40a/0xb00 [ 67.675712][ T8690] #1: ffff8880a3c4ca00 (&(&sch->q.lock)->rlock){+...}, at: sfb_change+0x257/0xe90 [ 67.685032][ T8690] Preemption disabled at: [ 67.685046][ T8690] [] sfb_change+0x257/0xe90 [ 67.695450][ T8690] CPU: 0 PID: 8690 Comm: syz-executor387 Not tainted 5.3.0+ #0 [ 67.702980][ T8690] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.713057][ T8690] Call Trace: [ 67.716330][ T8690] dump_stack+0x172/0x1f0 [ 67.720643][ T8690] ? sfb_change+0x257/0xe90 [ 67.725131][ T8690] ___might_sleep.cold+0x1be/0x1f7 [ 67.730232][ T8690] __might_sleep+0x95/0x190 [ 67.734774][ T8690] __mutex_lock+0xc5/0x13c0 [ 67.739258][ T8690] ? tcf_chain0_head_change_cb_del.isra.0+0x34/0x3e0 [ 67.745912][ T8690] ? save_stack+0x5c/0x90 [ 67.750214][ T8690] ? save_stack+0x23/0x90 [ 67.754523][ T8690] ? mutex_trylock+0x2d0/0x2d0 [ 67.759261][ T8690] ? fifo_set_limit+0x1a9/0x210 [ 67.764099][ T8690] ? fifo_create_dflt+0x90/0xf0 [ 67.768931][ T8690] ? sfb_change+0x18d/0xe90 [ 67.773410][ T8690] ? tc_modify_qdisc+0xfcf/0x1c50 [ 67.778411][ T8690] ? rtnetlink_rcv_msg+0x463/0xb00 [ 67.783501][ T8690] ? netlink_rcv_skb+0x177/0x450 [ 67.788418][ T8690] ? rtnetlink_rcv+0x1d/0x30 [ 67.792988][ T8690] ? netlink_unicast+0x531/0x710 [ 67.797910][ T8690] ? netlink_sendmsg+0x8a5/0xd60 [ 67.802836][ T8690] ? sock_sendmsg+0xd7/0x130 [ 67.807408][ T8690] ? ___sys_sendmsg+0x803/0x920 [ 67.812236][ T8690] ? __sys_sendmsg+0x105/0x1d0 [ 67.816979][ T8690] ? __x64_sys_sendmsg+0x78/0xb0 [ 67.821895][ T8690] ? do_syscall_64+0xfa/0x760 [ 67.826548][ T8690] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 67.832592][ T8690] ? __kasan_check_read+0x11/0x20 [ 67.837593][ T8690] ? mark_lock+0xc2/0x1220 [ 67.841988][ T8690] mutex_lock_nested+0x16/0x20 [ 67.846735][ T8690] ? mutex_lock_nested+0x16/0x20 [ 67.851669][ T8690] tcf_chain0_head_change_cb_del.isra.0+0x34/0x3e0 [ 67.858152][ T8690] ? __kasan_check_read+0x11/0x20 [ 67.863153][ T8690] ? mark_lock+0xc2/0x1220 [ 67.867545][ T8690] tcf_block_put_ext.part.0+0x2a/0x80 [ 67.872895][ T8690] tcf_block_put+0xbf/0x110 [ 67.877374][ T8690] ? tcf_block_put_ext+0x40/0x40 [ 67.882296][ T8690] ? sfb_destroy+0x80/0x80 [ 67.886701][ T8690] ? sfb_destroy+0x80/0x80 [ 67.891107][ T8690] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 67.897347][ T8690] ? prandom_u32+0x7d/0xb0 [ 67.901745][ T8690] ? sfb_zero_all_buckets+0x20/0x20 [ 67.906927][ T8690] sfb_destroy+0x37/0x80 [ 67.911154][ T8690] qdisc_destroy+0x11f/0x630 [ 67.915733][ T8690] qdisc_put+0x85/0xa0 [ 67.919789][ T8690] sfb_change+0x3d8/0xe90 [ 67.924185][ T8690] ? __sanitizer_cov_trace_const_cmp4+0x10/0x20 [ 67.930405][ T8690] ? sfb_graft+0x5f0/0x5f0 [ 67.934803][ T8690] ? nla_strcmp+0xe3/0x120 [ 67.939283][ T8690] ? sfb_graft+0x5f0/0x5f0 [ 67.943686][ T8690] tc_modify_qdisc+0xfcf/0x1c50 [ 67.948516][ T8690] ? qdisc_create+0x1210/0x1210 [ 67.953354][ T8690] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 67.959569][ T8690] ? qdisc_create+0x1210/0x1210 [ 67.964397][ T8690] rtnetlink_rcv_msg+0x463/0xb00 [ 67.969311][ T8690] ? rtnetlink_put_metrics+0x580/0x580 [ 67.974754][ T8690] ? netlink_deliver_tap+0x22d/0xbf0 [ 67.980016][ T8690] ? find_held_lock+0x35/0x130 [ 67.984759][ T8690] netlink_rcv_skb+0x177/0x450 [ 67.989586][ T8690] ? rtnetlink_put_metrics+0x580/0x580 [ 67.995020][ T8690] ? netlink_ack+0xb30/0xb30 [ 67.999583][ T8690] ? __kasan_check_read+0x11/0x20 [ 68.004587][ T8690] ? netlink_deliver_tap+0x254/0xbf0 [ 68.009850][ T8690] rtnetlink_rcv+0x1d/0x30 [ 68.014245][ T8690] netlink_unicast+0x531/0x710 [ 68.018986][ T8690] ? netlink_attachskb+0x7c0/0x7c0 [ 68.024077][ T8690] ? _copy_from_iter_full+0x25d/0x8a0 [ 68.029435][ T8690] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 68.035136][ T8690] ? __check_object_size+0x3d/0x437 [ 68.040320][ T8690] netlink_sendmsg+0x8a5/0xd60 [ 68.045079][ T8690] ? netlink_unicast+0x710/0x710 [ 68.049992][ T8690] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 68.055514][ T8690] ? apparmor_socket_sendmsg+0x2a/0x30 [ 68.060947][ T8690] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 68.067169][ T8690] ? security_socket_sendmsg+0x8d/0xc0 [ 68.072610][ T8690] ? netlink_unicast+0x710/0x710 [ 68.077524][ T8690] sock_sendmsg+0xd7/0x130 [ 68.081919][ T8690] ___sys_sendmsg+0x803/0x920 [ 68.086573][ T8690] ? copy_msghdr_from_user+0x440/0x440 [ 68.092033][ T8690] ? __kasan_check_read+0x11/0x20 [ 68.097049][ T8690] ? __fget+0x384/0x560 [ 68.101193][ T8690] ? ksys_dup3+0x3e0/0x3e0 [ 68.105850][ T8690] ? __kasan_check_read+0x11/0x20 [ 68.110852][ T8690] ? __fget_light+0x1a9/0x230 [ 68.115517][ T8690] ? __fdget+0x1b/0x20 [ 68.119570][ T8690] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 68.125792][ T8690] __sys_sendmsg+0x105/0x1d0 [ 68.130357][ T8690] ? __sys_sendmsg_sock+0xd0/0xd0 [ 68.135363][ T8690] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 68.141325][ T8690] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 68.146758][ T8690] ? do_syscall_64+0x26/0x760 [ 68.151422][ T8690] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 68.157473][ T8690] ? do_syscall_64+0x26/0x760 [ 68.162128][ T8690] __x64_sys_sendmsg+0x78/0xb0 [ 68.166866][ T8690] do_syscall_64+0xfa/0x760 [ 68.171355][ T8690] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 68.177230][ T8690] RIP: 0033:0x447449 [ 68.181110][ T8690] Code: e8 5c 14 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 ab 0e fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 68.200702][ T8690] RSP: 002b:00007f7a9e957db8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 68.209102][ T8690] RAX: ffffffffffffffda RBX: 00000000006dcc58 RCX: 0000000000447449 [ 68.217047][ T8690] RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000005 [ 68.224992][ T8690] RBP: 00000000006dcc50 R08: 0000000000000000 R09: 0000000000000000 [ 68.232937][ T8690] R10: 00000000ffffffff R11: 0000000000000246 R12: 00000000006dcc5c [ 68.240893][ T8690] R13: 00007ffd14c8914f R14: 00007f7a9e9589c0 R15: 000000000000002d