[....] Starting OpenBSD Secure Shell server: sshd[ 11.713959] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 25.890414] random: sshd: uninitialized urandom read (32 bytes read) [ 26.172690] audit: type=1400 audit(1545607895.589:6): avc: denied { map } for pid=1765 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 [ 26.210621] random: sshd: uninitialized urandom read (32 bytes read) [ 26.716574] random: sshd: uninitialized urandom read (32 bytes read) [ 44.380913] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.63' (ECDSA) to the list of known hosts. [ 50.092833] random: sshd: uninitialized urandom read (32 bytes read) [ 50.185870] audit: type=1400 audit(1545607919.599:7): avc: denied { map } for pid=1789 comm="syz-executor554" path="/root/syz-executor554721442" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 net.ipv6.conf.syz_tun.accept_dad = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported Error: argument "bridge0" is wrong: Device does not exist Error: argument "bridge0" is wrong: Device does not exist Cannot find device "veth0_to_bridge" Cannot find device "veth1_to_bridge" RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported Error: argument "bond0" is wrong: Device does not exist net.ipv6.conf.syz_tun.accept_dad = 0 Error: argument "bond0" is wrong: Device does not exist net.ipv6.conf.syz_tun.router_solicitations = 0 Cannot find device "veth0_to_bond" Cannot find device "veth1_to_bond" RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported Error: argument "team0" is wrong: Device does not exist RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported Error: argument "team0" is wrong: Device does not exist net.ipv6.conf.syz_tun.accept_dad = 0 RTNETLINK answers: Operation not supported net.ipv6.conf.syz_tun.router_solicitations = 0 Cannot find device "veth0_to_team" RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported Cannot find device "veth1_to_team" RTNETLINK answers: Operation not supported Cannot find device "bridge_slave_0" RTNETLINK answers: Operation not supported Cannot find device "bridge_slave_1" Error: argument "bridge0" is wrong: Device does not exist RTNETLINK answers: Operation not supported Error: argument "bridge0" is wrong: Device does not exist RTNETLINK answers: Operation not supported net.ipv6.conf.syz_tun.accept_dad = 0 Cannot find device "veth0_to_bridge" net.ipv6.conf.syz_tun.accept_dad = 0 RTNETLINK answers: Operation not supported net.ipv6.conf.syz_tun.router_solicitations = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 RTNETLINK answers: Operation not supported Cannot find device "veth1_to_bridge" RTNETLINK answers: Operation not supported net.ipv6.conf.syz_tun.accept_dad = 0 RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported net.ipv6.conf.syz_tun.router_solicitations = 0 RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported Cannot find device "bridge0" RTNETLINK answers: Operation not supported Error: argument "bond0" is wrong: Device does not exist RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported Cannot find device "bridge0" Error: argument "bridge0" is wrong: Device does not exist Error: argument "bond0" is wrong: Device does not exist RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported Cannot find device "bridge0" RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported Cannot find device "veth0_to_bond" Error: argument "bridge0" is wrong: Device does not exist RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported Cannot find device "bridge0" Cannot find device "veth0_to_bridge" Cannot find device "veth1_to_bond" RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported Cannot find device "vcan0" Cannot find device "veth1_to_bridge" RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported Cannot find device "vcan0" RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported Cannot find device "vcan0" Error: argument "team0" is wrong: Device does not exist RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported Error: argument "bond0" is wrong: Device does not exist Cannot find device "vcan0" RTNETLINK answers: Operation not supported Error: argument "bridge0" is wrong: Device does not exist Error: argument "team0" is wrong: Device does not exist Error: argument "bridge0" is wrong: Device does not exist Cannot find device "tunl0" Error: argument "bridge0" is wrong: Device does not exist Error: argument "bond0" is wrong: Device does not exist Error: argument "bridge0" is wrong: Device does not exist Error: argument "bridge0" is wrong: Device does not exist Cannot find device "veth0_to_team" Error: argument "bridge0" is wrong: Device does not exist Cannot find device "tunl0" Cannot find device "veth0_to_bridge" Cannot find device "veth0_to_bridge" Cannot find device "veth1_to_team" Cannot find device "veth0_to_bond" Cannot find device "veth0_to_bridge" Cannot find device "tunl0" Cannot find device "bridge_slave_0" Cannot find device "veth1_to_bridge" Cannot find device "veth1_to_bridge" Cannot find device "veth1_to_bridge" Cannot find device "veth1_to_bond" Cannot find device "tunl0" RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported Cannot find device "bridge_slave_1" RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported Cannot find device "gre0" RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported Error: argument "bond0" is wrong: Device does not exist RTNETLINK answers: Operation not supported Error: argument "bond0" is wrong: Device does not exist Cannot find device "gre0" Error: argument "bond0" is wrong: Device does not exist Error: argument "bond0" is wrong: Device does not exist Error: argument "bond0" is wrong: Device does not exist Cannot find device "gre0" Error: argument "team0" is wrong: Device does not exist Error: argument "bond0" is wrong: Device does not exist Cannot find device "veth0_to_bond" Error: argument "team0" is wrong: Device does not exist Cannot find device "veth0_to_bond" Cannot find device "gre0" Cannot find device "veth0_to_bond" RTNETLINK answers: Operation not supported Cannot find device "veth0_to_team" Cannot find device "gretap0" Cannot find device "veth1_to_bond" Cannot find device "veth1_to_bond" Cannot find device "veth1_to_bond" RTNETLINK answers: Operation not supported Cannot find device "veth1_to_team" Cannot find device "gretap0" RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported Cannot find device "bridge0" RTNETLINK answers: Operation not supported Cannot find device "gretap0" RTNETLINK answers: Operation not supported Cannot find device "bridge_slave_0" RTNETLINK answers: Operation not supported Error: argument "team0" is wrong: Device does not exist Error: argument "team0" is wrong: Device does not exist Cannot find device "gretap0" Cannot find device "bridge0" Cannot find device "bridge_slave_1" Error: argument "team0" is wrong: Device does not exist Error: argument "team0" is wrong: Device does not exist Cannot find device "bridge0" Error: argument "team0" is wrong: Device does not exist Error: argument "team0" is wrong: Device does not exist RTNETLINK answers: Operation not supported Cannot find device "veth0_to_team" Cannot find device "bridge0" Cannot find device "veth0_to_team" Cannot find device "veth0_to_team" Cannot find device "vcan0" Cannot find device "veth1_to_team" Cannot find device "veth1_to_team" Cannot find device "veth1_to_team" Cannot find device "vcan0" RTNETLINK answers: Operation not supported Cannot find device "bridge_slave_0" RTNETLINK answers: Invalid argument Cannot find device "bridge_slave_0" Cannot find device "vcan0" Cannot find device "bridge_slave_1" Cannot find device "bridge_slave_0" Cannot find device "bridge_slave_1" Cannot find device "bridge0" Cannot find device "vcan0" Cannot find device "bridge_slave_1" RTNETLINK answers: Invalid argument Cannot find device "bridge0" Cannot find device "tunl0" Cannot find device "bridge0" Cannot find device "tunl0" Cannot find device "ip6gre0" Cannot find device "bridge0" RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported Cannot find device "vcan0" Cannot find device "tunl0" Cannot find device "ip6gre0" Cannot find device "vcan0" RTNETLINK answers: Operation not supported Cannot find device "ip6gre0" Cannot find device "bridge0" Cannot find device "tunl0" Cannot find device "bridge0" Cannot find device "vcan0" Cannot find device "bridge0" Cannot find device "gre0" Cannot find device "vcan0" Cannot find device "ip6gre0" Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "gre0" Cannot find device "bridge0" Cannot find device "ip6gretap0" Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "tunl0" Cannot find device "gre0" Cannot find device "bridge0" Cannot find device "ip6gretap0" Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "gre0" Cannot find device "ip6gretap0" Cannot find device "tunl0" Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "bridge0" Cannot find device "gretap0" Cannot find device "ip6gretap0" Cannot find device "tunl0" Cannot find device "vcan0" Cannot find device "gretap0" Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "erspan0" Cannot find device "tunl0" Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "erspan0" Cannot find device "gre0" Cannot find device "gretap0" Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "erspan0" Cannot find device "gre0" Cannot find device "vcan0" Cannot find device "gretap0" Cannot find device "erspan0" Cannot find device "tunl0" Cannot find device "tunl0" Cannot find device "gre0" Cannot find device "tunl0" Cannot find device "vcan0" Cannot find device "tunl0" Cannot find device "bond0" RTNETLINK answers: Operation not supported Cannot find device "gre0" Cannot find device "tunl0" Cannot find device "tunl0" Cannot find device "tunl0" Cannot find device "bond0" Cannot find device "gretap0" Cannot find device "tunl0" Cannot find device "tunl0" Cannot find device "tunl0" Cannot find device "gretap0" RTNETLINK answers: Invalid argument Cannot find device "bond0" Cannot find device "gre0" Cannot find device "tunl0" Cannot find device "gre0" Cannot find device "gretap0" Cannot find device "gre0" Cannot find device "bond0" Cannot find device "tunl0" Cannot find device "gre0" RTNETLINK answers: Invalid argument Cannot find device "gretap0" Cannot find device "veth0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "veth0" Cannot find device "ip6gre0" Cannot find device "gre0" Cannot find device "gre0" RTNETLINK answers: Operation not supported Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "ip6gre0" Cannot find device "veth0" Cannot find device "gre0" Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "ip6gre0" Cannot find device "gre0" Cannot find device "veth0" RTNETLINK answers: Invalid argument Cannot find device "gretap0" Cannot find device "ip6gre0" Cannot find device "gretap0" Cannot find device "veth1" Cannot find device "gretap0" Cannot find device "ip6gretap0" Cannot find device "gretap0" Cannot find device "veth1" Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "veth1" RTNETLINK answers: Invalid argument Cannot find device "ip6gretap0" RTNETLINK answers: Operation not supported Cannot find device "gretap0" RTNETLINK answers: Operation not supported Cannot find device "ip6gretap0" Cannot find device "veth1" Cannot find device "gretap0" Cannot find device "ip6gre0" Cannot find device "team0" Cannot find device "ip6gretap0" RTNETLINK answers: Invalid argument Cannot find device "team0" Cannot find device "erspan0" Cannot find device "ip6gre0" RTNETLINK answers: Operation not supported Cannot find device "team0" RTNETLINK answers: Invalid argument Cannot find device "erspan0" Cannot find device "ip6gre0" RTNETLINK answers: Invalid argument Cannot find device "erspan0" Cannot find device "team0" Cannot find device "ip6gre0" RTNETLINK answers: Invalid argument Cannot find device "ip6gretap0" Cannot find device "veth0_to_bridge" Cannot find device "erspan0" RTNETLINK answers: Invalid argument Cannot find device "ip6gretap0" Cannot find device "ip6gre0" Cannot find device "veth0_to_bridge" Cannot find device "bond0" Cannot find device "ip6gretap0" Cannot find device "ip6gre0" Cannot find device "bond0" Cannot find device "veth0_to_bridge" RTNETLINK answers: Invalid argument Cannot find device "ip6gre0" Cannot find device "veth0_to_bridge" Cannot find device "ip6gretap0" Cannot find device "bond0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "veth1_to_bridge" Cannot find device "erspan0" Cannot find device "bond0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "veth1_to_bridge" Cannot find device "ip6gre0" Cannot find device "veth0" Cannot find device "ip6gre0" Cannot find device "erspan0" Cannot find device "veth1_to_bridge" Cannot find device "ip6gre0" Cannot find device "ip6gretap0" Cannot find device "veth0" Cannot find device "ip6gre0" Cannot find device "erspan0" Cannot find device "veth1_to_bridge" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "veth0" Cannot find device "ip6gre0" Cannot find device "ip6gretap0" Cannot find device "veth0_to_bond" Cannot find device "erspan0" Cannot find device "ip6gretap0" Cannot find device "veth0" Cannot find device "ip6gretap0" Cannot find device "veth0_to_bond" Cannot find device "ip6gretap0" Cannot find device "bond0" Cannot find device "ip6gretap0" Cannot find device "veth1" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "bond0" Cannot find device "veth0_to_bond" Cannot find device "erspan0" Cannot find device "ip6gretap0" Cannot find device "erspan0" Cannot find device "veth0_to_bond" Cannot find device "veth1" Cannot find device "bond0" Cannot find device "erspan0" Cannot find device "ip6gretap0" Cannot find device "erspan0" Cannot find device "bond0" Cannot find device "veth1" Cannot find device "veth1_to_bond" Cannot find device "veth0" Cannot find device "erspan0" Cannot find device "veth1" Cannot find device "erspan0" Cannot find device "erspan0" Cannot find device "veth1_to_bond" Cannot find device "veth0" Cannot find device "erspan0" Cannot find device "team0" Cannot find device "erspan0" Cannot find device "erspan0" Cannot find device "veth1_to_bond" Cannot find device "bond0" Cannot find device "veth0" Cannot find device "team0" Cannot find device "bond0" Cannot find device "veth1_to_bond" Cannot find device "bond0" Cannot find device "erspan0" Cannot find device "bond0" Cannot find device "veth0" Cannot find device "team0" Cannot find device "veth0_to_team" Cannot find device "erspan0" Cannot find device "bond0" Cannot find device "bond0" Cannot find device "veth0_to_team" Cannot find device "veth1" Cannot find device "team0" Cannot find device "bond0" Cannot find device "bond0" Cannot find device "bond0" Cannot find device "veth1" Cannot find device "bond0" Cannot find device "veth0_to_bridge" Cannot find device "veth0_to_team" Cannot find device "veth0" Cannot find device "veth0" Cannot find device "veth1" Cannot find device "bond0" Cannot find device "veth0_to_bridge" Cannot find device "veth0_to_team" Cannot find device "veth0" Cannot find device "veth0" Cannot find device "veth1" Cannot find device "bond0" Cannot find device "veth1_to_team" Cannot find device "veth0_to_bridge" Cannot find device "veth0" Cannot find device "veth0" Cannot find device "team0" Cannot find device "veth1_to_team" Cannot find device "veth0" Cannot find device "veth0_to_bridge" Cannot find device "veth0" Cannot find device "veth0" Cannot find device "team0" Cannot find device "veth0" Cannot find device "veth1_to_team" Cannot find device "veth1_to_bridge" Cannot find device "veth1" Cannot find device "veth1" Cannot find device "team0" Cannot find device "veth1_to_team" Cannot find device "veth0" Cannot find device "veth1_to_bridge" Cannot find device "veth1" Cannot find device "veth1" Cannot find device "team0" Cannot find device "veth1_to_bridge" Cannot find device "veth0" Cannot find device "veth1" Cannot find device "veth1" Cannot find device "veth0_to_bridge" Cannot find device "veth1_to_bridge" Cannot find device "veth1" Cannot find device "veth1" Cannot find device "veth0_to_bridge" Cannot find device "veth1" Cannot find device "veth0_to_bond" Cannot find device "team0" Cannot find device "veth0_to_bridge" Cannot find device "veth1" Cannot find device "team0" Cannot find device "veth0_to_bond" Cannot find device "team0" Cannot find device "veth0_to_bridge" Cannot find device "veth1" Cannot find device "team0" Cannot find device "team0" Cannot find device "veth0_to_bond" Cannot find device "veth1" Cannot find device "veth1_to_bridge" Cannot find device "team0" Cannot find device "team0" Cannot find device "veth0_to_bond" Cannot find device "team0" Cannot find device "veth1_to_bridge" Cannot find device "team0" Cannot find device "veth0_to_bridge" Cannot find device "veth1_to_bond" Cannot find device "team0" Cannot find device "veth1_to_bridge" Cannot find device "veth0_to_bridge" Cannot find device "veth0_to_bridge" Cannot find device "team0" Cannot find device "veth1_to_bond" Cannot find device "veth1_to_bridge" Cannot find device "veth0_to_bridge" Cannot find device "veth0_to_bridge" Cannot find device "team0" Cannot find device "veth0_to_bond" Cannot find device "veth1_to_bond" Cannot find device "veth0_to_bridge" Cannot find device "veth0_to_bridge" Cannot find device "veth0_to_bridge" Cannot find device "veth0_to_bond" Cannot find device "veth1_to_bond" Cannot find device "veth0_to_bridge" Cannot find device "veth0_to_bridge" Cannot find device "veth1_to_bridge" Cannot find device "veth0_to_team" Cannot find device "veth0_to_bond" Cannot find device "veth0_to_bridge" Cannot find device "veth1_to_bridge" Cannot find device "veth1_to_bridge" Cannot find device "veth0_to_team" Cannot find device "veth0_to_bond" Cannot find device "veth1_to_bridge" Cannot find device "veth1_to_bond" Cannot find device "veth0_to_bridge" Cannot find device "veth0_to_team" Cannot find device "veth1_to_bridge" Cannot find device "veth1_to_bond" Cannot find device "veth0_to_team" Cannot find device "veth1_to_bridge" Cannot find device "veth1_to_bridge" Cannot find device "veth1_to_bridge" Cannot find device "veth1_to_bridge" Cannot find device "veth1_to_bridge" Cannot find device "veth1_to_team" Cannot find device "veth1_to_bond" Cannot find device "veth0_to_bond" Cannot find device "veth0_to_bond" Cannot find device "veth1_to_bridge" Cannot find device "veth1_to_team" Cannot find device "veth0_to_bond" Cannot find device "veth1_to_bond" Cannot find device "veth0_to_bond" Cannot find device "veth1_to_bridge" Cannot find device "veth0_to_bond" Cannot find device "veth0_to_team" Cannot find device "veth0_to_bond" Cannot find device "veth1_to_team" Cannot find device "veth0_to_bond" Cannot find device "veth0_to_bond" Cannot find device "veth0_to_team" Cannot find device "veth0_to_bond" Cannot find device "veth1_to_team" Cannot find device "veth1_to_bond" Cannot find device "veth0_to_bond" Cannot find device "veth1_to_bond" Cannot find device "veth0_to_team" Cannot find device "veth1_to_bond" executing program Cannot find device "veth1_to_bond" Cannot find device "veth0_to_bond" Cannot find device "veth0_to_team" executing program executing program executing program [ 57.347521] audit: type=1400 audit(1545607926.759:8): avc: denied { map } for pid=4278 comm="syz-executor554" path="/dev/ashmem" dev="devtmpfs" ino=5416 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:device_t:s0 tclass=chr_file permissive=1 Cannot find device "veth0_to_bond" executing program Cannot find device "veth1_to_bond" executing program Cannot find device "veth1_to_bond" Cannot find device "veth1_to_team" executing program executing program executing program Cannot find device "veth1_to_bond" Cannot find device "veth1_to_bond" Cannot find device "veth1_to_team" Cannot find device "veth1_to_bond" executing program executing program executing program Cannot find device "veth0_to_team" executing program Cannot find device "veth1_to_bond" executing program Cannot find device "veth1_to_team" Cannot find device "veth0_to_team" executing program executing program executing program executing program Cannot find device "veth1_to_team" Cannot find device "veth0_to_team" executing program Cannot find device "veth0_to_team" executing program Cannot find device "veth1_to_bond" executing program Cannot find device "veth0_to_team" Cannot find device "veth0_to_team" executing program executing program Cannot find device "veth0_to_team" executing program Cannot find device "veth1_to_bond" executing program Cannot find device "veth1_to_team" executing program Cannot find device "veth0_to_team" executing program Cannot find device "veth0_to_team" executing program Cannot find device "veth1_to_team" executing program executing program Cannot find device "veth1_to_team" executing program Cannot find device "veth0_to_team" executing program executing program Cannot find device "veth1_to_team" executing program executing program Cannot find device "veth1_to_team" Cannot find device "veth0_to_team" executing program Cannot find device "veth1_to_team" executing program Cannot find device "veth1_to_team" executing program executing program Cannot find device "veth0_to_team" executing program executing program executing program executing program Cannot find device "veth1_to_team" Cannot find device "veth1_to_team" executing program executing program executing program Cannot find device "veth1_to_team" executing program executing program executing program Cannot find device "veth1_to_team" executing program executing program executing program Cannot find device "veth1_to_team" executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 61.631823] [ 61.633492] ====================================================== [ 61.639799] WARNING: possible circular locking dependency detected [ 61.646104] 4.14.90+ #29 Not tainted [ 61.649804] ------------------------------------------------------ [ 61.656114] syz-executor554/5513 is trying to acquire lock: [ 61.661823] (cpu_hotplug_lock.rw_sem){++++}, at: [] lru_add_drain_all+0xa/0x20 [ 61.670839] [ 61.670839] but task is already holding lock: executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 61.676799] (&sb->s_type->i_mutex_key#10){+.+.}, at: [] shmem_add_seals+0x132/0x1230 [ 61.686342] [ 61.686342] which lock already depends on the new lock. [ 61.686342] [ 61.694652] [ 61.694652] the existing dependency chain (in reverse order) is: [ 61.702263] [ 61.702263] -> #5 (&sb->s_type->i_mutex_key#10){+.+.}: [ 61.709037] down_write+0x34/0x90 [ 61.713006] shmem_fallocate+0x149/0xb20 [ 61.717586] ashmem_shrink_scan+0x1b6/0x4e0 [ 61.722422] ashmem_ioctl+0x2cc/0xe20 [ 61.726740] do_vfs_ioctl+0x1a0/0x1030 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 61.731143] SyS_ioctl+0x7e/0xb0 [ 61.735024] do_syscall_64+0x19b/0x4b0 [ 61.739425] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 61.745118] [ 61.745118] -> #4 (ashmem_mutex){+.+.}: [ 61.750557] __mutex_lock+0xf5/0x1480 [ 61.754871] ashmem_mmap+0x4c/0x430 [ 61.759013] mmap_region+0x836/0xfb0 [ 61.763275] do_mmap+0x551/0xb80 [ 61.767157] vm_mmap_pgoff+0x180/0x1d0 [ 61.771559] SyS_mmap_pgoff+0xf8/0x1a0 [ 61.775958] do_syscall_64+0x19b/0x4b0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 61.780360] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 61.786070] [ 61.786070] -> #3 (&mm->mmap_sem){++++}: [ 61.791610] __might_fault+0x137/0x1b0 [ 61.796014] _copy_from_user+0x27/0x100 [ 61.800518] perf_ioctl+0x6ef/0x1bb0 [ 61.805533] do_vfs_ioctl+0x1a0/0x1030 [ 61.809930] SyS_ioctl+0x7e/0xb0 [ 61.813801] do_syscall_64+0x19b/0x4b0 [ 61.818220] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 61.823921] [ 61.823921] -> #2 (&cpuctx_mutex){+.+.}: executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 61.829484] __mutex_lock+0xf5/0x1480 [ 61.833788] perf_event_init_cpu+0xab/0x150 [ 61.838627] perf_event_init+0x295/0x2d4 [ 61.843202] start_kernel+0x444/0x73f [ 61.847538] secondary_startup_64+0xa5/0xb0 [ 61.852379] [ 61.852379] -> #1 (pmus_lock){+.+.}: [ 61.857582] __mutex_lock+0xf5/0x1480 [ 61.861893] perf_event_init_cpu+0x2c/0x150 [ 61.866731] cpuhp_invoke_callback+0x1b5/0x1960 [ 61.871917] _cpu_up+0x22c/0x520 [ 61.875799] do_cpu_up+0x13f/0x180 executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 61.879852] smp_init+0x137/0x14e [ 61.883819] kernel_init_freeable+0x189/0x3a5 [ 61.888832] kernel_init+0xc/0x157 [ 61.892888] ret_from_fork+0x3a/0x50 [ 61.897113] [ 61.897113] -> #0 (cpu_hotplug_lock.rw_sem){++++}: [ 61.903523] lock_acquire+0x10f/0x380 [ 61.907836] cpus_read_lock+0x39/0xb0 [ 61.912153] lru_add_drain_all+0xa/0x20 [ 61.916637] shmem_add_seals+0x4db/0x1230 [ 61.921292] shmem_fcntl+0xea/0x120 [ 61.925433] do_fcntl+0x966/0xea0 [ 61.929396] SyS_fcntl+0xc7/0x100 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 61.933376] do_syscall_64+0x19b/0x4b0 [ 61.937779] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 61.943500] [ 61.943500] other info that might help us debug this: [ 61.943500] [ 61.951646] Chain exists of: [ 61.951646] cpu_hotplug_lock.rw_sem --> ashmem_mutex --> &sb->s_type->i_mutex_key#10 [ 61.951646] [ 61.964048] Possible unsafe locking scenario: [ 61.964048] [ 61.970096] CPU0 CPU1 [ 61.970098] ---- ---- executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 61.970099] lock(&sb->s_type->i_mutex_key#10); [ 61.970107] lock(ashmem_mutex); [ 61.970111] lock(&sb->s_type->i_mutex_key#10); executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 61.970117] lock(cpu_hotplug_lock.rw_sem); [ 61.970122] [ 61.970122] *** DEADLOCK *** [ 61.970122] [ 61.970126] 1 lock held by syz-executor554/5513: [ 61.970128] #0: (&sb->s_type->i_mutex_key#10){+.+.}, at: [] shmem_add_seals+0x132/0x1230 [ 61.970153] [ 61.970153] stack backtrace: executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 61.970160] CPU: 1 PID: 5513 Comm: syz-executor554 Not tainted 4.14.90+ #29 [ 61.970162] Call Trace: [ 61.970172] dump_stack+0xb9/0x11b [ 61.970199] print_circular_bug.isra.18.cold.43+0x2d3/0x40c [ 61.970205] ? save_trace+0xd6/0x250 [ 61.970235] __lock_acquire+0x2ff9/0x4320 [ 61.970242] ? __lock_acquire+0x619/0x4320 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 61.970249] ? __wb_update_bandwidth.constprop.20+0xd60/0xd60 [ 61.970258] ? trace_hardirqs_on+0x10/0x10 [ 61.970263] ? generic_perform_write+0x320/0x430 [ 61.970270] ? filemap_page_mkwrite+0x2d0/0x2d0 [ 61.970294] lock_acquire+0x10f/0x380 [ 61.970300] ? lru_add_drain_all+0xa/0x20 [ 61.970307] cpus_read_lock+0x39/0xb0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 61.970313] ? lru_add_drain_all+0xa/0x20 [ 61.970317] lru_add_drain_all+0xa/0x20 [ 61.970323] shmem_add_seals+0x4db/0x1230 [ 61.970333] ? shmem_file_llseek+0x220/0x220 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 61.970343] shmem_fcntl+0xea/0x120 [ 61.970351] do_fcntl+0x966/0xea0 [ 61.970358] ? f_getown+0xa0/0xa0 [ 61.970365] ? vfs_write+0x318/0x4d0 [ 61.970391] ? selinux_file_fcntl+0xfa/0x160 [ 61.970400] SyS_fcntl+0xc7/0x100 [ 61.970406] ? do_fcntl+0xea0/0xea0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 61.970412] do_syscall_64+0x19b/0x4b0 [ 61.970421] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 61.970427] RIP: 0033:0x444519 [ 61.970430] RSP: 002b:00007ffd727c48a8 EFLAGS: 00000207 ORIG_RAX: 0000000000000048 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 61.970438] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000444519 [ 61.970442] RDX: 000000000000000d RSI: 0000000000000409 RDI: 0000000000000003 [ 61.970446] RBP: 0000000000000000 R08: 00000000000000ba R09: 00000000000000ba executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 61.970450] R10: 00000000000000ba R11: 0000000000000207 R12: 00000000000000ba [ 61.970454] R13: 000000000000f091 R14: 0000000000000000 R15: 0000000000000000 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program