#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=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=1/256 in-flight: 24:console_callback pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256 pending: 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=2/512 in-flight: 60:call_usermodehelper_exec_work, 11426:call_usermodehelper_exec_work 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: 4224:wb_workfn pool 2: cpus=1 node=0 flags=0x0 nice=0 hung=0s workers=7 idle: 17 19051 3810 3363 13795 15870 pool 4: cpus=0-1 flags=0x4 nice=0 hung=0s workers=12 idle: 5 4210 21 87 4207 3542 4229 3478 561 SELinux: failure in selinux_parse_skb(), unable to parse packet sctp: [Deprecated]: syz-executor2 (pid 26510) Use of int in maxseg socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor2 (pid 26510) Use of int in maxseg socket option. Use struct sctp_assoc_value instead SELinux: failure in selinux_parse_skb(), unable to parse packet nla_parse: 8 callbacks suppressed netlink: 1 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor0'. sctp: [Deprecated]: syz-executor3 (pid 26671) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead sctp: [Deprecated]: syz-executor3 (pid 26665) Use of struct sctp_assoc_value in delayed_ack socket option. Use struct sctp_sack_info instead device lo entered promiscuous mode kauditd_printk_skb: 28 callbacks suppressed audit: type=1326 audit(1507466687.256:356): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=26742 comm="syz-executor7" exe="/root/syz-executor7" sig=31 arch=40000003 syscall=240 compat=1 ip=0xf7fc5c79 code=0xffff0000 audit: type=1326 audit(1507466687.440:357): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=26742 comm="syz-executor7" exe="/root/syz-executor7" sig=31 arch=40000003 syscall=240 compat=1 ip=0xf7fc5c79 code=0xffff0000 audit: type=1326 audit(1507466687.462:358): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=26742 comm="syz-executor7" exe="/root/syz-executor7" sig=31 arch=40000003 syscall=240 compat=1 ip=0xf7fc5c79 code=0xffff0000 audit: type=1326 audit(1507466687.462:359): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=26742 comm="syz-executor7" exe="/root/syz-executor7" sig=31 arch=40000003 syscall=162 compat=1 ip=0xf7fc5c79 code=0xffff0000 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=15566 sclass=netlink_route_socket pig=26945 comm=syz-executor0 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=15566 sclass=netlink_route_socket pig=26945 comm=syz-executor0 device syz5 entered promiscuous mode device syz5 left promiscuous mode device syz5 entered promiscuous mode netlink: 7 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 13 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 7 bytes leftover after parsing attributes in process `syz-executor2'. netlink: 13 bytes leftover after parsing attributes in process `syz-executor2'. sctp: [Deprecated]: syz-executor2 (pid 27237) Use of int in maxseg socket option. Use struct sctp_assoc_value instead sctp: [Deprecated]: syz-executor2 (pid 27250) Use of int in maxseg socket option. Use struct sctp_assoc_value instead rpcbind: RPC call returned error 22 rpcbind: RPC call returned error 22 device syz7 left promiscuous mode QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl device syz3 entered promiscuous mode netlink: 5 bytes leftover after parsing attributes in process `syz-executor0'. device gre0 entered promiscuous mode audit: type=1326 audit(1507466694.586:360): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=28047 comm="syz-executor0" exe="/root/syz-executor0" sig=31 arch=40000003 syscall=240 compat=1 ip=0xf7f37c79 code=0xffff0000 audit: type=1326 audit(1507466694.670:361): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=kernel pid=28047 comm="syz-executor0" exe="/root/syz-executor0" sig=31 arch=40000003 syscall=240 compat=1 ip=0xf7f37c79 code=0xffff0000 device gre0 entered promiscuous mode netlink: 6 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor6'. netlink: 6 bytes leftover after parsing attributes in process `syz-executor0'. netlink: 1 bytes leftover after parsing attributes in process `syz-executor6'. do_dccp_setsockopt: sockopt(PACKET_SIZE) is deprecated: fix your app do_dccp_setsockopt: sockopt(PACKET_SIZE) is deprecated: fix your app