#4: (kbd_event_lock){....}, at: [] spin_lock include/linux/spinlock.h:316 [inline] #4: (kbd_event_lock){....}, at: [] kbd_event+0x82/0x36d0 drivers/tty/vt/keyboard.c:1458 #5: (tasklist_lock){.?.?}, at: [] 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 56s! BUG: workqueue lockup - pool cpus=0-1 flags=0x4 nice=0 stuck for 56s! Showing busy workqueues and worker pools: workqueue events: flags=0x0 pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 in-flight: 24:jump_label_update_timeout pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=5/256 pending: console_callback, perf_sched_delayed, check_corruption, 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_unbound: flags=0x2 pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/512 pending: flush_to_ldisc workqueue events_power_efficient: flags=0x80 pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256 pending: neigh_periodic_work, 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 pending: wb_workfn pool 2: cpus=1 node=0 flags=0x0 nice=0 hung=0s workers=6 idle: 5572 1635 7506 17 18703 netlink: 6 bytes leftover after parsing attributes in process `syz-executor6'. netlink: 6 bytes leftover after parsing attributes in process `syz-executor6'. TCP: request_sock_TCPv6: Possible SYN flooding on port 20017. Sending cookies. Check SNMP counters. netlink: 5 bytes leftover after parsing attributes in process `syz-executor2'. Buffer I/O error on dev loop6, logical block 0, async page read audit: type=1326 audit(1507330998.720:415): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=25065 comm="syz-executor3" exe="/root/syz-executor3" sig=31 arch=40000003 syscall=240 compat=1 ip=0xf7febc79 code=0xffff0000 netlink: 5 bytes leftover after parsing attributes in process `syz-executor2'. audit: type=1326 audit(1507330998.794:416): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=25065 comm="syz-executor3" exe="/root/syz-executor3" sig=31 arch=40000003 syscall=240 compat=1 ip=0xf7febc79 code=0xffff0000 audit: type=1326 audit(1507330998.848:417): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=25090 comm="syz-executor6" exe="/root/syz-executor6" sig=9 arch=40000003 syscall=240 compat=1 ip=0xf7f48c79 code=0x0 audit: type=1326 audit(1507330998.945:418): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=25090 comm="syz-executor6" exe="/root/syz-executor6" sig=9 arch=40000003 syscall=240 compat=1 ip=0xf7f48c79 code=0x0 netlink: 3 bytes leftover after parsing attributes in process `syz-executor1'. QAT: Invalid ioctl netlink: 3 bytes leftover after parsing attributes in process `syz-executor1'. SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pig=25159 comm=syz-executor0 netlink: 13 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 13 bytes leftover after parsing attributes in process `syz-executor4'. audit: type=1326 audit(1507331000.181:419): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=25281 comm="syz-executor7" exe="/root/syz-executor7" sig=31 arch=40000003 syscall=240 compat=1 ip=0xf7f25c79 code=0xffff0000 IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready device lo entered promiscuous mode audit: type=1326 audit(1507331001.122:420): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=25441 comm="syz-executor6" exe="/root/syz-executor6" sig=31 arch=40000003 syscall=240 compat=1 ip=0xf7f48c79 code=0xffff0000 sctp: [Deprecated]: syz-executor6 (pid 25462) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead sctp: [Deprecated]: syz-executor6 (pid 25462) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead device syz4 entered promiscuous mode ip6gre0: port 1(syz6) entered blocking state ip6gre0: port 1(syz6) entered disabled state device syz6 entered promiscuous mode audit: type=1326 audit(1507331001.298:421): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=25441 comm="syz-executor6" exe="/root/syz-executor6" sig=31 arch=40000003 syscall=240 compat=1 ip=0xf7f48c79 code=0xffff0000 audit: type=1326 audit(1507331001.776:422): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=25532 comm="syz-executor6" exe="/root/syz-executor6" sig=0 arch=40000003 syscall=240 compat=1 ip=0xf7f48c79 code=0x7ffc0000 audit: type=1326 audit(1507331001.798:423): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=25532 comm="syz-executor6" exe="/root/syz-executor6" sig=0 arch=40000003 syscall=100 compat=1 ip=0xf7f48c79 code=0x7ffc0000 audit: type=1326 audit(1507331001.799:424): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=25532 comm="syz-executor6" exe="/root/syz-executor6" sig=0 arch=40000003 syscall=240 compat=1 ip=0xf7f48c79 code=0x7ffc0000 netlink: 3 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor3'. mmap: syz-executor0 (25773): VmData 35422208 exceed data ulimit 0. Update limits or use boot option ignore_rlimit_data. QAT: Invalid ioctl QAT: Invalid ioctl SELinux: unrecognized netlink message: protocol=9 nlmsg_type=65535 sclass=netlink_audit_socket pig=25840 comm=syz-executor0 nla_parse: 4 callbacks suppressed netlink: 4 bytes leftover after parsing attributes in process `syz-executor4'. SELinux: unrecognized netlink message: protocol=9 nlmsg_type=30 sclass=netlink_audit_socket pig=25840 comm=syz-executor0 SELinux: unrecognized netlink message: protocol=9 nlmsg_type=65535 sclass=netlink_audit_socket pig=25840 comm=syz-executor0 SELinux: unrecognized netlink message: protocol=9 nlmsg_type=30 sclass=netlink_audit_socket pig=25840 comm=syz-executor0 netlink: 3 bytes leftover after parsing attributes in process `syz-executor1'. netlink: 4 bytes leftover after parsing attributes in process `syz-executor4'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor1'. SELinux: unknown mount option SELinux: unknown mount option QAT: Invalid ioctl QAT: Invalid ioctl kauditd_printk_skb: 66 callbacks suppressed audit: type=1326 audit(1507331004.524:491): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=25916 comm="syz-executor4" exe="/root/syz-executor4" sig=31 arch=40000003 syscall=240 compat=1 ip=0xf7f63c79 code=0xffff0000 QAT: Invalid ioctl Can not set IPV6_FL_F_REFLECT if flowlabel_consistency sysctl is enable audit: type=1326 audit(1507331004.677:492): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=25916 comm="syz-executor4" exe="/root/syz-executor4" sig=31 arch=40000003 syscall=240 compat=1 ip=0xf7f63c79 code=0xffff0000 device gre0 entered promiscuous mode QAT: Invalid ioctl Can not set IPV6_FL_F_REFLECT if flowlabel_consistency sysctl is enable sctp: [Deprecated]: syz-executor7 (pid 26029) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead audit: type=1326 audit(1507331005.135:493): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=26020 comm="syz-executor1" exe="/root/syz-executor1" sig=9 arch=40000003 syscall=240 compat=1 ip=0xf7f3bc79 code=0x0 sctp: [Deprecated]: syz-executor7 (pid 26044) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead audit: type=1326 audit(1507331005.304:494): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=26020 comm="syz-executor1" exe="/root/syz-executor1" sig=9 arch=40000003 syscall=240 compat=1 ip=0xf7f3bc79 code=0x0 QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl netlink: 5 bytes leftover after parsing attributes in process `syz-executor5'. netlink: 5 bytes leftover after parsing attributes in process `syz-executor5'. do_dccp_setsockopt: sockopt(PACKET_SIZE) is deprecated: fix your app do_dccp_setsockopt: sockopt(PACKET_SIZE) is deprecated: fix your app QAT: Invalid ioctl QAT: Invalid ioctl netlink: 3 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 5 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 3 bytes leftover after parsing attributes in process `syz-executor3'. netlink: 5 bytes leftover after parsing attributes in process `syz-executor2'. QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl TCP: request_sock_TCP: Possible SYN flooding on port 20004. Sending cookies. Check SNMP counters. TCP: tcp_parse_options: Illegal window scaling value 32 > 14 received QAT: Invalid ioctl TCP: tcp_parse_options: Illegal window scaling value 32 > 14 received device gre0 entered promiscuous mode