#4: (kbd_event_lock){....}, at: [<ffffffff8272b5d2>] spin_lock include/linux/spinlock.h:316 [inline]
#4: (kbd_event_lock){....}, at: [<ffffffff8272b5d2>] kbd_event+0x82/0x36d0 drivers/tty/vt/keyboard.c:1458
#5: (tasklist_lock){.?.+}, at: [<ffffffff81546c53>] debug_show_all_locks+0xd3/0x400 kernel/locking/lockdep.c:4552
=============================================
BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 57s!
Showing busy workqueues and worker pools:
workqueue events: flags=0x0
pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=4/256
pending: console_callback, jump_label_update_timeout, vmstat_shepherd, cache_reap
workqueue events_long: flags=0x0
pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256
pending: gc_worker
workqueue events_power_efficient: flags=0x80
pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256
pending: neigh_periodic_work
workqueue mm_percpu_wq: flags=0x8
pwq 0: cpus=0 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=1/256
in-flight: 3311:wb_workfn
pool 4: cpus=0-1 flags=0x4 nice=0 hung=0s workers=12 idle: 3319 65 11442 234 3330 3334 3242 3258 21 3325 5
nla_parse: 5 callbacks suppressed
netlink: 1 bytes leftover after parsing attributes in process `syz-executor4'.
netlink: 1 bytes leftover after parsing attributes in process `syz-executor4'.
netlink: 1 bytes leftover after parsing attributes in process `syz-executor4'.
netlink: 1 bytes leftover after parsing attributes in process `syz-executor4'.
netlink: 5 bytes leftover after parsing attributes in process `syz-executor5'.
sctp: [Deprecated]: syz-executor0 (pid 15890) Use of int in maxseg socket option.
Use struct sctp_assoc_value instead
netlink: 5 bytes leftover after parsing attributes in process `syz-executor5'.
QAT: Invalid ioctl
sctp: [Deprecated]: syz-executor0 (pid 15901) Use of struct sctp_assoc_value in delayed_ack socket option.
Use struct sctp_sack_info instead
QAT: Invalid ioctl
audit: type=1326 audit(1507281849.491:133): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=15930 comm="syz-executor7" exe="/root/syz-executor7" sig=31 arch=40000003 syscall=240 compat=1 ip=0xf7f88c79 code=0xffff0000
sctp: [Deprecated]: syz-executor0 (pid 15906) Use of int in maxseg socket option.
Use struct sctp_assoc_value instead
sctp: [Deprecated]: syz-executor0 (pid 15906) Use of struct sctp_assoc_value in delayed_ack socket option.
Use struct sctp_sack_info instead
audit: type=1326 audit(1507281849.624:134): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=15930 comm="syz-executor7" exe="/root/syz-executor7" sig=31 arch=40000003 syscall=240 compat=1 ip=0xf7f88c79 code=0xffff0000
print_req_error: I/O error, dev loop5, sector 0
print_req_error: I/O error, dev loop5, sector 0
netlink: 12 bytes leftover after parsing attributes in process `syz-executor4'.
netlink: 12 bytes leftover after parsing attributes in process `syz-executor4'.
TCP: request_sock_TCP: Possible SYN flooding on port 20024. Sending cookies. Check SNMP counters.
QAT: Invalid ioctl
QAT: Invalid ioctl
RDS: rds_bind could not find a transport for 224.0.0.1, load rds_tcp or rds_rdma?
RDS: rds_bind could not find a transport for 224.0.0.1, load rds_tcp or rds_rdma?
kvm [16377]: vcpu0, guest rIP: 0xfff0 Hyper-V uhandled wrmsr: 0x40000020 data 0x400
TCP: request_sock_TCPv6: Possible SYN flooding on port 20017. Sending cookies. Check SNMP counters.
netlink: 13 bytes leftover after parsing attributes in process `syz-executor1'.
netlink: 13 bytes leftover after parsing attributes in process `syz-executor1'.
8021q: VLANs not supported on lo
8021q: VLANs not supported on lo
sock: process `syz-executor4' is using obsolete getsockopt SO_BSDCOMPAT
device syz7 entered promiscuous mode
device syz7 left promiscuous mode
device syz7 entered promiscuous mode
QAT: Invalid ioctl
QAT: Invalid ioctl
QAT: Invalid ioctl
QAT: Invalid ioctl
QAT: Invalid ioctl
QAT: Invalid ioctl
netlink: 11 bytes leftover after parsing attributes in process `syz-executor2'.
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=58827 sclass=netlink_route_socket pig=17245 comm=syz-executor4
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=58827 sclass=netlink_route_socket pig=17238 comm=syz-executor4
sctp: [Deprecated]: syz-executor1 (pid 17237) Use of int in max_burst socket option deprecated.
Use struct sctp_assoc_value instead
sctp: [Deprecated]: syz-executor1 (pid 17246) Use of int in max_burst socket option deprecated.
Use struct sctp_assoc_value instead
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=17226 comm=syz-executor0
rpcbind: RPC call returned error 22
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=40473 sclass=netlink_route_socket pig=17283 comm=syz-executor1
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=40473 sclass=netlink_route_socket pig=17298 comm=syz-executor1