#5: (tasklist_lock){.?.?}, at: [<ffffffff81546c53>] debug_show_all_locks+0xd3/0x400 kernel/locking/lockdep.c:4552
=============================================
BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 30s!
Showing busy workqueues and worker pools:
workqueue events: flags=0x0
pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=3/256
in-flight: 17:console_callback
pending: check_corruption, cache_reap
pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=3/256
pending: perf_sched_delayed, cache_reap, vmstat_shepherd
workqueue events_long: flags=0x0
pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256
pending: gc_worker
workqueue mm_percpu_wq: flags=0x8
pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256
pending: vmstat_update
workqueue writeback: flags=0x4e
pwq 4: cpus=0-1 flags=0x4 nice=0 active=2/256
pending: wb_workfn, wb_workfn
pool 2: cpus=1 node=0 flags=0x0 nice=0 hung=0s workers=6 idle: 23 3559 1376 4312 3556
PF_BRIDGE: RTM_SETLINK with unknown ifindex
nla_parse: 5 callbacks suppressed
netlink: 37 bytes leftover after parsing attributes in process `syz-executor4'.
PF_BRIDGE: RTM_SETLINK with unknown ifindex
netlink: 3 bytes leftover after parsing attributes in process `syz-executor5'.
netlink: 37 bytes leftover after parsing attributes in process `syz-executor4'.
netlink: 3 bytes leftover after parsing attributes in process `syz-executor5'.
netlink: 5 bytes leftover after parsing attributes in process `syz-executor4'.
netlink: 5 bytes leftover after parsing attributes in process `syz-executor4'.
QAT: Invalid ioctl
9pnet_virtio: no channels available for device ./control
QAT: Invalid ioctl
9pnet_virtio: no channels available for device ./control
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=26906 comm=syz-executor5
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=51 sclass=netlink_route_socket pig=26898 comm=syz-executor5
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=26898 comm=syz-executor5
netlink: 1 bytes leftover after parsing attributes in process `syz-executor2'.
netlink: 1 bytes leftover after parsing attributes in process `syz-executor2'.
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=26931 comm=syz-executor5
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=51 sclass=netlink_route_socket pig=26931 comm=syz-executor5
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=26931 comm=syz-executor5
netlink: 3 bytes leftover after parsing attributes in process `syz-executor7'.
netlink: 3 bytes leftover after parsing attributes in process `syz-executor7'.
sctp: [Deprecated]: syz-executor2 (pid 27028) Use of int in max_burst socket option.
Use struct sctp_assoc_value instead
sctp: [Deprecated]: syz-executor2 (pid 27028) Use of int in maxseg socket option.
Use struct sctp_assoc_value instead
sctp: [Deprecated]: syz-executor2 (pid 27038) Use of int in max_burst socket option.
Use struct sctp_assoc_value instead
sctp: [Deprecated]: syz-executor2 (pid 27038) Use of int in maxseg socket option.
Use struct sctp_assoc_value instead
QAT: Invalid ioctl
QAT: Invalid ioctl
audit: type=1326 audit(1507252642.759:812): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=27180 comm="syz-executor0" exe="/root/syz-executor0" sig=31 arch=40000003 syscall=240 compat=1 ip=0xf7fa4c79 code=0xffff0000
audit: type=1326 audit(1507252642.864:813): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=27180 comm="syz-executor0" exe="/root/syz-executor0" sig=31 arch=40000003 syscall=240 compat=1 ip=0xf7fa4c79 code=0xffff0000
Bearer <> rejected, illegal name
Bearer <> rejected, illegal name
QAT: Invalid ioctl
QAT: Invalid ioctl
QAT: Invalid ioctl
QAT: Invalid ioctl
QAT: Invalid ioctl
QAT: Invalid ioctl
QAT: Invalid ioctl
QAT: Invalid ioctl
PF_BRIDGE: br_mdb_parse() with unknown ifindex
PF_BRIDGE: br_mdb_parse() with unknown ifindex
QAT: Invalid ioctl
QAT: Invalid ioctl
QAT: Invalid ioctl
QAT: Invalid ioctl
device gre0 entered promiscuous mode
device syz6 left promiscuous mode
kvm [27550]: vcpu0, guest rIP: 0xfff0 Hyper-V uhandled wrmsr: 0x40000020 data 0x400
kvm [27550]: vcpu0, guest rIP: 0xfff0 Hyper-V uhandled wrmsr: 0x40000020 data 0x400
nla_parse: 21 callbacks suppressed
netlink: 13 bytes leftover after parsing attributes in process `syz-executor7'.
netlink: 13 bytes leftover after parsing attributes in process `syz-executor7'.
QAT: Invalid ioctl
SELinux: unrecognized netlink message: protocol=4 nlmsg_type=28816 sclass=netlink_tcpdiag_socket pig=27699 comm=syz-executor7
QAT: Invalid ioctl
SELinux: unrecognized netlink message: protocol=4 nlmsg_type=28816 sclass=netlink_tcpdiag_socket pig=27743 comm=syz-executor7
devpts: called with bogus options
netlink: 1 bytes leftover after parsing attributes in process `syz-executor2'.
audit: type=1326 audit(1507252647.829:814): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=27919 comm="syz-executor0" exe="/root/syz-executor0" sig=9 arch=40000003 syscall=240 compat=1 ip=0xf7fa4c79 code=0x0
netlink: 1 bytes leftover after parsing attributes in process `syz-executor2'.
audit: type=1326 audit(1507252647.964:815): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=27919 comm="syz-executor0" exe="/root/syz-executor0" sig=9 arch=40000003 syscall=240 compat=1 ip=0xf7fa4c79 code=0x0
netlink: 8 bytes leftover after parsing attributes in process `syz-executor5'.
netlink: 8 bytes leftover after parsing attributes in process `syz-executor5'.
QAT: Invalid ioctl
QAT: Invalid ioctl
QAT: Invalid ioctl
QAT: Invalid ioctl