[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 9.622180] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 41.446636] random: sshd: uninitialized urandom read (32 bytes read) [ 41.462708] random: crng init done Warning: Permanently added '10.128.0.24' (ECDSA) to the list of known hosts. [ 48.053688] audit: type=1400 audit(1541055727.859:5): avc: denied { sys_admin } for pid=2056 comm="syz-executor240" capability=21 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported [ 48.103517] audit: type=1400 audit(1541055727.909:6): avc: denied { net_admin } for pid=2069 comm="ip" capability=12 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 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 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 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 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 RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported Error: argument "bridge0" is wrong: Device does not exist RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported Error: argument "bridge0" is wrong: Device does not exist RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported 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 "veth0_to_bridge" Error: argument "bridge0" is wrong: Device does not exist RTNETLINK answers: Operation not supported Error: argument "bridge0" is wrong: Device does not exist 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 Cannot find device "veth1_to_bridge" Cannot find device "veth0_to_bridge" Error: argument "bridge0" is wrong: Device does not exist Cannot find device "veth0_to_bridge" Error: argument "bridge0" is wrong: Device does not exist Error: argument "bridge0" is wrong: Device does not exist RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported Cannot find device "veth1_to_bridge" Cannot find device "veth0_to_bridge" Cannot find device "veth0_to_bridge" Cannot find device "veth1_to_bridge" Error: argument "bridge0" is wrong: Device does not exist RTNETLINK answers: Operation not supported Cannot find device "veth1_to_bridge" Cannot find device "veth1_to_bridge" RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported 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 "veth0_to_bridge" Error: argument "bond0" is wrong: Device does not exist RTNETLINK answers: Operation not supported 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 RTNETLINK answers: Operation not supported Cannot find device "veth1_to_bridge" RTNETLINK answers: Operation not supported Cannot find device "veth0_to_bond" Error: argument "bond0" is wrong: Device does not exist Error: argument "bond0" is wrong: Device does not exist Cannot find device "veth0_to_bond" Cannot find device "veth0_to_bond" Error: argument "bond0" is wrong: Device does not exist RTNETLINK answers: Operation not supported Cannot find device "veth1_to_bond" RTNETLINK answers: Operation not supported Cannot find device "veth1_to_bond" Cannot find device "veth1_to_bond" Error: argument "bond0" is wrong: Device does not exist RTNETLINK answers: Operation not supported Cannot find device "veth0_to_bond" RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported Cannot find device "veth1_to_bond" Error: argument "bond0" is wrong: Device does not exist Error: argument "bond0" 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_bond" RTNETLINK answers: Operation not supported Error: argument "team0" is wrong: Device does not exist Cannot find device "veth1_to_bond" RTNETLINK answers: Operation not supported Error: argument "bond0" is wrong: Device does not exist RTNETLINK answers: Operation not supported Error: argument "team0" is wrong: Device does not exist RTNETLINK answers: Operation not supported Cannot find device "veth0_to_team" Error: argument "team0" is wrong: Device does not exist Cannot find device "veth1_to_team" RTNETLINK answers: Operation not supported Cannot find device "bridge_slave_0" Cannot find device "veth0_to_bond" Error: argument "team0" is wrong: Device does not exist RTNETLINK answers: Operation not supported Error: argument "team0" is wrong: Device does not exist Cannot find device "bridge_slave_1" Cannot find device "veth0_to_team" Error: argument "team0" is wrong: Device does not exist Error: argument "team0" is wrong: Device does not exist Error: argument "team0" is wrong: Device does not exist Cannot find device "veth1_to_bond" Error: argument "team0" is wrong: Device does not exist Cannot find device "veth1_to_team" Cannot find device "veth0_to_team" Cannot find device "veth0_to_team" RTNETLINK answers: Operation not supported Cannot find device "bridge_slave_0" Cannot find device "veth1_to_team" Cannot find device "veth1_to_team" Cannot find device "veth0_to_team" RTNETLINK answers: Operation not supported Cannot find device "bridge_slave_0" Cannot find device "bridge_slave_0" Cannot find device "veth1_to_team" Error: argument "team0" is wrong: Device does not exist Cannot find device "bridge_slave_1" Cannot find device "bridge_slave_1" Cannot find device "bridge_slave_1" Error: argument "team0" is wrong: Device does not exist Cannot find device "bridge_slave_0" Cannot find device "veth0_to_team" Cannot find device "bridge_slave_1" Cannot find device "veth1_to_team" Cannot find device "bridge_slave_0" RTNETLINK answers: Operation not supported Cannot find device "bridge_slave_1" Cannot find device "bridge0" Cannot find device "bridge0" RTNETLINK answers: Operation not supported Cannot find device "bridge0" RTNETLINK answers: Operation not supported Cannot find device "bridge0" RTNETLINK answers: Operation not supported Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "vcan0" RTNETLINK answers: Operation not supported Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "vcan0" Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "bridge0" RTNETLINK answers: Operation not supported Cannot find device "bridge0" Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "bridge0" Cannot find device "bridge0" Cannot find device "vcan0" Cannot find device "bridge0" Cannot find device "vcan0" Cannot find device "bridge0" Cannot find device "tunl0" Cannot find device "tunl0" Cannot find device "bridge0" Cannot find device "vcan0" Cannot find device "bridge0" Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "tunl0" Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "tunl0" Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "gre0" Cannot find device "vcan0" Cannot find device "vcan0" Cannot find device "bridge0" Cannot find device "tunl0" Cannot find device "vcan0" Cannot find device "tunl0" Cannot find device "gre0" Cannot find device "bridge0" Cannot find device "tunl0" Cannot find device "tunl0" Cannot find device "vcan0" Cannot find device "tunl0" Cannot find device "tunl0" Cannot find device "vcan0" Cannot find device "bridge0" Cannot find device "gre0" Cannot find device "tunl0" Cannot find device "tunl0" Cannot find device "vcan0" Cannot find device "gre0" Cannot find device "tunl0" Cannot find device "tunl0" Cannot find device "tunl0" Cannot find device "vcan0" Cannot find device "gre0" Cannot find device "gretap0" Cannot find device "tunl0" Cannot find device "vcan0" Cannot find device "tunl0" Cannot find device "tunl0" Cannot find device "gre0" Cannot find device "gretap0" Cannot find device "gre0" Cannot find device "tunl0" Cannot find device "gre0" Cannot find device "gretap0" Cannot find device "vcan0" Cannot find device "gre0" Cannot find device "tunl0" Cannot find device "gre0" Cannot find device "tunl0" Cannot find device "gre0" Cannot find device "gretap0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "gre0" Cannot find device "gretap0" Cannot find device "tunl0" Cannot find device "gre0" Cannot find device "gre0" RTNETLINK answers: Operation not supported Cannot find device "gretap0" Cannot find device "tunl0" Cannot find device "gretap0" Cannot find device "gre0" Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "tunl0" Cannot find device "gre0" Cannot find device "gretap0" Cannot find device "gre0" Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "gre0" Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "gre0" Cannot find device "gretap0" RTNETLINK answers: Invalid argument Cannot find device "gretap0" RTNETLINK answers: Operation not supported Cannot find device "gre0" Cannot find device "gretap0" Cannot find device "gre0" Cannot find device "gretap0" Cannot find device "gretap0" RTNETLINK answers: Operation not supported Cannot find device "gretap0" Cannot find device "gretap0" RTNETLINK answers: Invalid argument RTNETLINK answers: Operation not supported Cannot find device "gretap0" Cannot find device "gretap0" Cannot find device "ip6gre0" RTNETLINK answers: Invalid argument RTNETLINK answers: Operation not supported Cannot find device "ip6gre0" RTNETLINK answers: Invalid argument RTNETLINK answers: Operation not supported Cannot find device "ip6gre0" RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument Cannot find device "ip6gre0" Cannot find device "ip6gretap0" RTNETLINK answers: Invalid argument Cannot find device "ip6gretap0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "ip6gretap0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" RTNETLINK answers: Invalid argument Cannot find device "ip6gre0" Cannot find device "ip6gretap0" Cannot find device "ip6gre0" RTNETLINK answers: Invalid argument Cannot find device "ip6gre0" Cannot find device "erspan0" Cannot find device "ip6gre0" Cannot find device "ip6gretap0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" RTNETLINK answers: Invalid argument Cannot find device "erspan0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "ip6gre0" Cannot find device "erspan0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "ip6gre0" Cannot find device "erspan0" Cannot find device "ip6gre0" Cannot find device "ip6gretap0" Cannot find device "erspan0" Cannot find device "ip6gre0" Cannot find device "ip6gre0" Cannot find device "bond0" Cannot find device "ip6gretap0" Cannot find device "erspan0" Cannot find device "ip6gretap0" Cannot find device "erspan0" Cannot find device "ip6gretap0" Cannot find device "bond0" Cannot find device "ip6gretap0" Cannot find device "erspan0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "bond0" Cannot find device "erspan0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "erspan0" Cannot find device "bond0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "ip6gretap0" Cannot find device "erspan0" Cannot find device "veth0" Cannot find device "erspan0" Cannot find device "erspan0" Cannot find device "ip6gretap0" Cannot find device "erspan0" Cannot find device "bond0" Cannot find device "bond0" Cannot find device "veth0" Cannot find device "erspan0" Cannot find device "bond0" Cannot find device "erspan0" Cannot find device "bond0" Cannot find device "erspan0" Cannot find device "veth0" Cannot find device "bond0" Cannot find device "erspan0" Cannot find device "erspan0" Cannot find device "erspan0" Cannot find device "bond0" Cannot find device "veth0" Cannot find device "bond0" Cannot find device "erspan0" Cannot find device "erspan0" Cannot find device "erspan0" Cannot find device "bond0" Cannot find device "veth0" Cannot find device "veth1" Cannot find device "bond0" Cannot find device "erspan0" Cannot find device "bond0" Cannot find device "veth0" Cannot find device "veth0" Cannot find device "bond0" Cannot find device "veth1" Cannot find device "bond0" Cannot find device "veth0" Cannot find device "bond0" Cannot find device "veth1" Cannot find device "veth0" Cannot find device "bond0" Cannot find device "veth0" Cannot find device "bond0" Cannot find device "bond0" Cannot find device "veth0" Cannot find device "bond0" Cannot find device "bond0" Cannot find device "veth1" Cannot find device "veth0" Cannot find device "veth1" Cannot find device "team0" Cannot find device "bond0" Cannot find device "veth0" Cannot find device "bond0" Cannot find device "veth1" Cannot find device "veth0" Cannot find device "team0" Cannot find device "veth0" Cannot find device "veth0" Cannot find device "veth1" Cannot find device "veth0" Cannot find device "veth1" Cannot find device "team0" Cannot find device "veth0" Cannot find device "veth0" Cannot find device "veth1" Cannot find device "team0" Cannot find device "veth0" Cannot find device "veth0" Cannot find device "veth1" Cannot find device "veth1" Cannot find device "veth1" Cannot find device "veth0" Cannot find device "veth1" Cannot find device "veth0" Cannot find device "team0" Cannot find device "veth0_to_bridge" Cannot find device "veth0_to_bridge" Cannot find device "veth1" Cannot find device "team0" Cannot find device "veth0" Cannot find device "veth1" Cannot find device "team0" Cannot find device "veth0_to_bridge" Cannot find device "team0" Cannot find device "veth1" Cannot find device "veth1" Cannot find device "team0" Cannot find device "veth1" Cannot find device "veth0_to_bridge" Cannot find device "veth1" Cannot find device "veth1" Cannot find device "team0" Cannot find device "team0" Cannot find device "team0" Cannot find device "veth1" Cannot find device "veth1" Cannot find device "veth1_to_bridge" Cannot find device "veth0_to_bridge" Cannot find device "team0" Cannot find device "team0" Cannot find device "team0" Cannot find device "veth1_to_bridge" Cannot find device "veth1" Cannot find device "veth0_to_bridge" Cannot find device "team0" Cannot find device "veth0_to_bridge" Cannot find device "team0" Cannot find device "veth1" Cannot find device "veth1_to_bridge" Cannot find device "team0" Cannot find device "veth0_to_bridge" Cannot find device "veth0_to_bridge" Cannot find device "team0" Cannot find device "team0" Cannot find device "veth0_to_bridge" 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 "team0" Cannot find device "veth0_to_bridge" Cannot find device "veth0_to_bond" Cannot find device "veth0_to_bridge" Cannot find device "team0" Cannot find device "veth1_to_bridge" Cannot find device "veth0_to_bridge" Cannot find device "veth0_to_bond" Cannot find device "veth1_to_bridge" Cannot find device "veth0_to_bridge" Cannot find device "veth1_to_bridge" Cannot find device "team0" Cannot find device "veth0_to_bridge" Cannot find device "veth0_to_bridge" Cannot find device "veth0_to_bond" Cannot find device "veth1_to_bridge" Cannot find device "veth0_to_bridge" Cannot find device "veth1_to_bridge" Cannot find device "veth1_to_bridge" Cannot find device "veth0_to_bridge" Cannot find device "veth1_to_bridge" Cannot find device "veth0_to_bond" Cannot find device "veth1_to_bridge" Cannot find device "veth0_to_bridge" Cannot find device "veth1_to_bridge" Cannot find device "veth1_to_bridge" Cannot find device "veth0_to_bond" Cannot find device "veth0_to_bridge" Cannot find device "veth1_to_bond" Cannot find device "veth1_to_bridge" Cannot find device "veth0_to_bridge" Cannot find device "veth1_to_bridge" Cannot find device "veth0_to_bond" Cannot find device "veth1_to_bridge" Cannot find device "veth0_to_bond" Cannot find device "veth0_to_bridge" Cannot find device "veth1_to_bond" Cannot find device "veth0_to_bond" Cannot find device "veth1_to_bridge" Cannot find device "veth1_to_bond" Cannot find device "veth0_to_bond" Cannot find device "veth0_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_bond" Cannot find device "veth1_to_bridge" 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 "veth0_to_bond" Cannot find device "veth1_to_bridge" Cannot find device "veth0_to_bond" Cannot find device "veth1_to_bond" Cannot find device "veth1_to_bridge" Cannot find device "veth1_to_bridge" Cannot find device "veth0_to_team" Cannot find device "veth1_to_bond" Cannot find device "veth0_to_bond" Cannot find device "veth1_to_bridge" Cannot find device "veth1_to_bond" Cannot find device "veth0_to_team" Cannot find device "veth1_to_bond" Cannot find device "veth1_to_bond" Cannot find device "veth1_to_bond" Cannot find device "veth1_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_bond" Cannot find device "veth1_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 "veth1_to_bond" Cannot find device "veth1_to_bond" Cannot find device "veth0_to_team" Cannot find device "veth1_to_team" Cannot find device "veth0_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_team" Cannot find device "veth1_to_bond" Cannot find device "veth0_to_team" Cannot find device "veth1_to_team" Cannot find device "veth0_to_bond" Cannot find device "veth0_to_team" Cannot find device "veth1_to_bond" Cannot find device "veth1_to_team" Cannot find device "veth0_to_team" Cannot find device "veth0_to_team" Cannot find device "veth1_to_bond" Cannot find device "veth0_to_team" Cannot find device "veth1_to_team" Cannot find device "veth1_to_bond" Cannot find device "veth0_to_team" Cannot find device "veth0_to_team" Cannot find device "veth1_to_bond" Cannot find device "veth1_to_bond" Cannot find device "veth1_to_team" Cannot find device "veth1_to_team" Cannot find device "veth1_to_team" Cannot find device "veth1_to_team" Cannot find device "veth1_to_team" Cannot find device "veth1_to_bond" Cannot find device "veth1_to_team" Cannot find device "veth0_to_team" Cannot find device "veth1_to_team" Cannot find device "veth1_to_team" Cannot find device "veth1_to_bond" [ 50.391778] audit: type=1400 audit(1541055730.199:7): avc: denied { sys_chroot } for pid=2065 comm="syz-executor240" capability=18 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 Cannot find device "veth0_to_team" Cannot find device "veth1_to_team" executing program Cannot find device "veth0_to_team" Cannot find device "veth1_to_team" Cannot find device "veth0_to_team" Cannot find device "veth0_to_team" Cannot find device "veth1_to_team" Cannot find device "veth1_to_team" executing program Cannot find device "veth0_to_team" Cannot find device "veth1_to_team" executing program Cannot find device "veth1_to_team" Cannot find device "veth0_to_team" Cannot find device "veth1_to_team" Cannot find device "veth0_to_team" executing program executing program Cannot find device "veth1_to_team" Cannot find device "veth1_to_team" Cannot find device "veth1_to_team" 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 [ 52.545667] ================================================================== [ 52.553066] BUG: KASAN: use-after-free in disk_unblock_events+0x51/0x60 [ 52.559803] Read of size 8 at addr ffff8801d6a09660 by task blkid/3700 [ 52.566457] [ 52.568081] CPU: 1 PID: 3700 Comm: blkid Not tainted 4.9.135+ #15 [ 52.574313] ffff8801cef6f6f8 ffffffff81b36bf9 ffffea00075a8200 ffff8801d6a09660 [ 52.582372] 0000000000000000 ffff8801d6a09660 0000000000000000 ffff8801cef6f730 executing program executing program executing program executing program executing program executing program executing program executing program [ 52.590454] ffffffff815009ad ffff8801d6a09660 0000000000000008 0000000000000000 [ 52.598526] Call Trace: [ 52.601120] [] dump_stack+0xc1/0x128 [ 52.606485] [] print_address_description+0x6c/0x234 [ 52.613150] [] kasan_report.cold.6+0x242/0x2fe [ 52.619377] [] ? disk_unblock_events+0x51/0x60 [ 52.625608] [] __asan_report_load8_noabort+0x14/0x20 [ 52.632368] [] disk_unblock_events+0x51/0x60 [ 52.638417] [] __blkdev_get+0x6b6/0xd60 [ 52.644050] [] ? __blkdev_put+0x840/0x840 [ 52.649872] [] ? fsnotify+0x114/0x1100 [ 52.655422] [] blkdev_get+0x2da/0x920 [ 52.660870] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 52.667625] [] ? bd_may_claim+0xd0/0xd0 [ 52.673243] [] ? bd_acquire+0x27/0x250 [ 52.678807] [] ? bd_acquire+0x88/0x250 [ 52.684356] [] ? _raw_spin_unlock+0x2c/0x50 [ 52.690317] [] blkdev_open+0x1a5/0x250 [ 52.695848] [] do_dentry_open+0x3ef/0xc90 [ 52.701640] [] ? blkdev_get_by_dev+0x70/0x70 [ 52.707689] [] vfs_open+0x11c/0x210 [ 52.712962] [] ? may_open.isra.20+0x14f/0x2a0 [ 52.719101] [] path_openat+0x542/0x2790 [ 52.724729] [] ? path_mountpoint+0x6c0/0x6c0 [ 52.730783] [] ? trace_hardirqs_on+0x10/0x10 [ 52.736838] [] ? new_slab+0x22e/0x3d0 [ 52.742284] [] ? expand_files.part.3+0x3a9/0x6d0 [ 52.748685] [] do_filp_open+0x197/0x270 [ 52.754304] [] ? may_open_dev+0xe0/0xe0 [ 52.759936] [] ? _raw_spin_unlock+0x2c/0x50 [ 52.765905] [] ? __alloc_fd+0x1d7/0x4a0 [ 52.771550] [] do_sys_open+0x30d/0x5c0 [ 52.777084] [] ? filp_open+0x70/0x70 [ 52.782452] [] ? up_read+0x1a/0x40 [ 52.787640] [] SyS_open+0x2d/0x40 [ 52.792736] [] ? do_sys_open+0x5c0/0x5c0 [ 52.798440] [] do_syscall_64+0x19f/0x550 [ 52.804146] [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 52.811059] [ 52.812680] Allocated by task 3691: [ 52.816307] save_stack_trace+0x16/0x20 [ 52.820277] kasan_kmalloc.part.1+0x62/0xf0 [ 52.824590] kasan_kmalloc+0xaf/0xc0 [ 52.828296] kmem_cache_alloc_trace+0x117/0x2e0 [ 52.832962] alloc_disk_node+0x54/0x3a0 [ 52.836929] alloc_disk+0x18/0x20 [ 52.840378] loop_add+0x368/0x7a0 [ 52.843827] loop_control_ioctl+0x136/0x300 [ 52.848144] compat_SyS_ioctl+0x12d/0x1fd0 [ 52.852374] do_fast_syscall_32+0x2f1/0xa10 [ 52.856690] entry_SYSENTER_compat+0x90/0xa2 [ 52.861083] [ 52.862711] Freed by task 3700: [ 52.865985] save_stack_trace+0x16/0x20 [ 52.869951] kasan_slab_free+0xac/0x190 [ 52.873920] kfree+0xfb/0x310 [ 52.877018] disk_release+0x259/0x330 [ 52.880813] device_release+0x7e/0x220 [ 52.884689] kobject_put+0x148/0x250 [ 52.888395] put_disk+0x23/0x30 [ 52.891670] __blkdev_get+0x616/0xd60 [ 52.895462] blkdev_get+0x2da/0x920 [ 52.899077] blkdev_open+0x1a5/0x250 [ 52.902794] do_dentry_open+0x3ef/0xc90 [ 52.906765] vfs_open+0x11c/0x210 [ 52.910215] path_openat+0x542/0x2790 [ 52.914011] do_filp_open+0x197/0x270 [ 52.917812] do_sys_open+0x30d/0x5c0 [ 52.921519] SyS_open+0x2d/0x40 [ 52.924789] do_syscall_64+0x19f/0x550 [ 52.928670] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 52.933756] [ 52.935377] The buggy address belongs to the object at ffff8801d6a09100 [ 52.935377] which belongs to the cache kmalloc-2048 of size 2048 [ 52.948199] The buggy address is located 1376 bytes inside of [ 52.948199] 2048-byte region [ffff8801d6a09100, ffff8801d6a09900) [ 52.960234] The buggy address belongs to the page: [ 52.965153] page:ffffea00075a8200 count:1 mapcount:0 mapping: (null) index:0x0 compound_mapcount: 0 [ 52.975417] flags: 0x4000000000004080(slab|head) [ 52.980175] page dumped because: kasan: bad access detected [ 52.985872] [ 52.987503] Memory state around the buggy address: [ 52.992423] ffff8801d6a09500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 52.999781] ffff8801d6a09580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 53.007141] >ffff8801d6a09600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 53.014493] ^ [ 53.020975] ffff8801d6a09680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 53.028328] ffff8801d6a09700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 53.035672] ================================================================== executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 53.043016] Disabling lock debugging due to kernel taint [ 53.054271] Kernel panic - not syncing: panic_on_warn set ... [ 53.054271] [ 53.061644] CPU: 1 PID: 3700 Comm: blkid Tainted: G B 4.9.135+ #15 [ 53.069518] ffff8801cef6f658 ffffffff81b36bf9 ffffffff82e366e0 00000000ffffffff [ 53.077660] 0000000000000000 0000000000000001 0000000000000000 ffff8801cef6f718 [ 53.085714] ffffffff813f6aa5 0000000041b58ab3 ffffffff82e2a6e3 ffffffff813f68e6 [ 53.093832] Call Trace: executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 53.096421] [] dump_stack+0xc1/0x128 [ 53.101782] [] panic+0x1bf/0x39f [ 53.106795] [] ? add_taint.cold.6+0x16/0x16 [ 53.112760] [] ? ___preempt_schedule+0x16/0x18 [ 53.118990] [] kasan_end_report+0x47/0x4f [ 53.124782] [] kasan_report.cold.6+0x76/0x2fe [ 53.130923] [] ? disk_unblock_events+0x51/0x60 [ 53.137151] [] __asan_report_load8_noabort+0x14/0x20 executing program executing program executing program executing program executing program executing program [ 53.143907] [] disk_unblock_events+0x51/0x60 [ 53.149960] [] __blkdev_get+0x6b6/0xd60 [ 53.155577] [] ? __blkdev_put+0x840/0x840 [ 53.161368] [] ? fsnotify+0x114/0x1100 [ 53.166903] [] blkdev_get+0x2da/0x920 [ 53.172339] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 53.179072] [] ? bd_may_claim+0xd0/0xd0 [ 53.184680] [] ? bd_acquire+0x27/0x250 [ 53.190196] [] ? bd_acquire+0x88/0x250 [ 53.195721] [] ? _raw_spin_unlock+0x2c/0x50 [ 53.201678] [] blkdev_open+0x1a5/0x250 [ 53.207671] [] do_dentry_open+0x3ef/0xc90 [ 53.213469] [] ? blkdev_get_by_dev+0x70/0x70 [ 53.219509] [] vfs_open+0x11c/0x210 [ 53.224772] [] ? may_open.isra.20+0x14f/0x2a0 [ 53.230942] [] path_openat+0x542/0x2790 [ 53.236579] [] ? path_mountpoint+0x6c0/0x6c0 [ 53.242621] [] ? trace_hardirqs_on+0x10/0x10 [ 53.248677] [] ? new_slab+0x22e/0x3d0 [ 53.254118] [] ? expand_files.part.3+0x3a9/0x6d0 [ 53.260508] [] do_filp_open+0x197/0x270 [ 53.266116] [] ? may_open_dev+0xe0/0xe0 [ 53.271728] [] ? _raw_spin_unlock+0x2c/0x50 [ 53.277687] [] ? __alloc_fd+0x1d7/0x4a0 [ 53.283294] [] do_sys_open+0x30d/0x5c0 [ 53.288812] [] ? filp_open+0x70/0x70 [ 53.294158] [] ? up_read+0x1a/0x40 [ 53.299330] [] SyS_open+0x2d/0x40 [ 53.304416] [] ? do_sys_open+0x5c0/0x5c0 [ 53.310115] [] do_syscall_64+0x19f/0x550 [ 53.315813] [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 53.323042] Kernel Offset: disabled [ 53.326648] Rebooting in 86400 seconds..