INIT: Id "4" respawning too fast: disabled for 5 minutes INIT: Id "5" respawning too fast: disabled for 5 minutes INIT: Id "3" respawning too fast: disabled for 5 minutes INIT: Id "6" respawning too fast: disabled for 5 minutes INIT: Id "2" respawning too fast: disabled for 5 minutes [ 817.472162] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.154' (ECDSA) to the list of known hosts. [ 823.251533] random: sshd: uninitialized urandom read (32 bytes read) [ 823.340965] audit: type=1400 audit(1545477356.634:7): avc: denied { map } for pid=1900 comm="syz-execprog" path="/root/syz-execprog" dev="sda1" ino=1426 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 2018/12/22 11:15:57 parsed 1 programs [ 823.957422] audit: type=1400 audit(1545477357.244:8): avc: denied { map } for pid=1900 comm="syz-execprog" path="/sys/kernel/debug/kcov" dev="debugfs" ino=4999 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:debugfs_t:s0 tclass=file permissive=1 [ 824.276687] random: cc1: uninitialized urandom read (8 bytes read) 2018/12/22 11:15:58 executed programs: 0 [ 825.032002] audit: type=1400 audit(1545477358.324:9): avc: denied { map } for pid=1900 comm="syz-execprog" path="/root/syzkaller-shm858313433" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1 2018/12/22 11:16:03 executed programs: 195 2018/12/22 11:16:08 executed programs: 657 2018/12/22 11:16:13 executed programs: 1124 2018/12/22 11:16:18 executed programs: 1589 2018/12/22 11:16:23 executed programs: 2049 2018/12/22 11:16:28 executed programs: 2510 2018/12/22 11:16:33 executed programs: 2981 2018/12/22 11:16:38 executed programs: 3444 2018/12/22 11:16:43 executed programs: 3908 2018/12/22 11:16:48 executed programs: 4363 2018/12/22 11:16:53 executed programs: 4833 2018/12/22 11:16:58 executed programs: 5287 [ 888.247998] audit: type=1400 audit(1545477421.534:10): avc: denied { map } for pid=23082 comm="sh" path="/bin/dash" dev="sda1" ino=1473 scontext=system_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 2018/12/22 11:17:03 executed programs: 5740 2018/12/22 11:17:08 executed programs: 6205 2018/12/22 11:17:13 executed programs: 6660 2018/12/22 11:17:18 executed programs: 7113 2018/12/22 11:17:23 executed programs: 7574 2018/12/22 11:17:28 executed programs: 8038 2018/12/22 11:17:33 executed programs: 8489 INIT: Id "1" respawning too fast: disabled for 5 minutes INIT: Id "3" respawning too fast: disabled for 5 minutes INIT: Id "5" respawning too fast: disabled for 5 minutes INIT: Id "6" respawning too fast: disabled for 5 minutes INIT: Id "4" respawning too fast: disabled for 5 minutes INIT: Id "2" respawning too fast: disabled for 5 minutes 2018/12/22 11:17:38 executed programs: 8940 2018/12/22 11:17:43 executed programs: 9402 2018/12/22 11:17:48 executed programs: 9855 2018/12/22 11:17:53 executed programs: 10313 2018/12/22 11:17:58 executed programs: 10768 2018/12/22 11:18:03 executed programs: 11229 2018/12/22 11:18:08 executed programs: 11681 2018/12/22 11:18:13 executed programs: 12127 2018/12/22 11:18:18 executed programs: 12577 2018/12/22 11:18:23 executed programs: 13041 2018/12/22 11:18:28 executed programs: 13505 2018/12/22 11:18:33 executed programs: 13967 2018/12/22 11:18:38 executed programs: 14422 2018/12/22 11:18:43 executed programs: 14876 2018/12/22 11:18:48 executed programs: 15326 2018/12/22 11:18:53 executed programs: 15764 2018/12/22 11:18:58 executed programs: 16223 2018/12/22 11:19:03 executed programs: 16673 2018/12/22 11:19:08 executed programs: 17146 2018/12/22 11:19:13 executed programs: 17595 2018/12/22 11:19:18 executed programs: 18035 2018/12/22 11:19:23 executed programs: 18471 2018/12/22 11:19:28 executed programs: 18903 2018/12/22 11:19:33 executed programs: 19352 2018/12/22 11:19:38 executed programs: 19814 2018/12/22 11:19:43 executed programs: 20255 2018/12/22 11:19:48 executed programs: 20703 2018/12/22 11:19:53 executed programs: 21144 2018/12/22 11:19:58 executed programs: 21570 2018/12/22 11:20:03 executed programs: 22010 2018/12/22 11:20:08 executed programs: 22473 2018/12/22 11:20:13 executed programs: 22917 2018/12/22 11:20:18 executed programs: 23378 2018/12/22 11:20:23 executed programs: 23846 2018/12/22 11:20:28 executed programs: 24283 2018/12/22 11:20:33 executed programs: 24712 2018/12/22 11:20:38 executed programs: 25149 [ 1105.821615] refcount_t: increment on 0; use-after-free. [ 1105.827127] ------------[ cut here ]------------ [ 1105.831866] WARNING: CPU: 0 PID: 31226 at lib/refcount.c:153 refcount_inc.cold.12+0x18/0x1f [ 1105.840333] Kernel panic - not syncing: panic_on_warn set ... [ 1105.840333] [ 1105.847685] CPU: 0 PID: 31226 Comm: syz-executor0 Not tainted 4.14.90+ #29 [ 1105.854670] Call Trace: [ 1105.857241] dump_stack+0xb9/0x11b [ 1105.860761] ? refcount_dec_and_mutex_lock+0x20/0x5f [ 1105.865842] panic+0x1bf/0x3a4 [ 1105.869022] ? add_taint.cold.4+0x16/0x16 [ 1105.873167] ? __probe_kernel_read+0x163/0x1c0 [ 1105.877731] ? refcount_inc.cold.12+0x18/0x1f [ 1105.882208] __warn.cold.7+0x2f/0x35 [ 1105.885898] ? refcount_inc.cold.12+0x18/0x1f [ 1105.890418] report_bug+0x1f7/0x26c [ 1105.894030] do_error_trap+0x1ba/0x2c0 [ 1105.897899] ? math_error+0x2d0/0x2d0 [ 1105.901676] ? console_unlock+0xaee/0xc80 [ 1105.905824] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1105.910647] invalid_op+0x18/0x40 [ 1105.914078] RIP: 0010:refcount_inc.cold.12+0x18/0x1f [ 1105.919169] RSP: 0018:ffff8881cce5f150 EFLAGS: 00010286 [ 1105.924507] RAX: 000000000000002b RBX: ffff8881d4ff4814 RCX: 0000000000000000 [ 1105.931754] RDX: 0000000000000000 RSI: ffffffff94a6aa20 RDI: ffffffff965d8560 [ 1105.939005] RBP: 00000000000003e8 R08: 0000000000000001 R09: 0000000000000000 [ 1105.946254] R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 [ 1105.953498] R13: ffff8881d4ff4780 R14: 0000000000000000 R15: ffff8881ca508062 [ 1105.960757] igmp_start_timer+0x98/0xc0 [ 1105.964711] igmp_rcv+0x1346/0x2400 [ 1105.968318] ? ipt_alloc_initial_table+0x640/0x640 [ 1105.973231] ? check_preemption_disabled+0x34/0x1e0 [ 1105.978233] ip_local_deliver_finish+0x3f1/0xaa0 [ 1105.982970] ip_local_deliver+0x374/0x450 [ 1105.987096] ? ip_call_ra_chain+0x540/0x540 [ 1105.991394] ? trace_hardirqs_on+0x10/0x10 [ 1105.995609] ? inet_add_protocol.cold.0+0x2d/0x2d [ 1106.000430] ip_rcv_finish+0x5cc/0x1490 [ 1106.004382] ip_rcv+0xa19/0x1028 [ 1106.007743] ? ip_local_deliver+0x450/0x450 [ 1106.012043] ? ip_local_deliver_finish+0xaa0/0xaa0 [ 1106.016955] ? ip_local_deliver+0x450/0x450 [ 1106.021255] __netif_receive_skb_core+0x149d/0x2d10 [ 1106.026247] ? trace_hardirqs_on+0x10/0x10 [ 1106.030456] ? kernel_text_address+0x10b/0x120 [ 1106.035019] ? flush_backlog+0x580/0x580 [ 1106.039060] ? netif_receive_skb_internal+0x3b6/0x5e0 [ 1106.044231] ? netif_receive_skb_internal+0x3b6/0x5e0 [ 1106.049433] ? lock_acquire+0x10f/0x380 [ 1106.053385] ? __netif_receive_skb+0x58/0x1f0 [ 1106.057855] __netif_receive_skb+0x58/0x1f0 [ 1106.062156] netif_receive_skb_internal+0xfc/0x5e0 [ 1106.067066] ? dev_cpu_dead+0x7e0/0x7e0 [ 1106.071027] ? rcu_read_lock_sched_held+0x102/0x120 [ 1106.076041] tun_rx_batched.isra.12+0x464/0x710 [ 1106.080698] ? tun_chr_read_iter+0x1c0/0x1c0 [ 1106.085094] ? check_preemption_disabled+0x34/0x1e0 [ 1106.090089] ? __local_bh_enable_ip+0x65/0xb0 [ 1106.094566] tun_get_user+0x11d1/0x3c90 [ 1106.098525] ? tun_rx_batched.isra.12+0x710/0x710 [ 1106.103348] ? trace_hardirqs_on+0x10/0x10 [ 1106.107566] ? print_cfs_rq.cold.9+0xb06/0xba1 [ 1106.112133] ? futex_wait_setup+0x2f0/0x2f0 [ 1106.116431] ? get_futex_key_refs.isra.5+0x90/0x90 [ 1106.121344] ? __tun_get+0x121/0x220 [ 1106.125041] ? check_preemption_disabled+0x34/0x1e0 [ 1106.130050] tun_chr_write_iter+0xcf/0x180 [ 1106.134304] do_iter_readv_writev+0x3a4/0x560 [ 1106.138781] ? clone_verify_area+0x1e0/0x1e0 [ 1106.143171] ? security_file_permission+0x88/0x1e0 [ 1106.148080] do_iter_write+0x156/0x530 [ 1106.151954] ? trace_hardirqs_on+0x10/0x10 [ 1106.156173] vfs_writev+0x146/0x2d0 [ 1106.159782] ? vfs_iter_write+0xa0/0xa0 [ 1106.163766] ? lock_downgrade+0x560/0x560 [ 1106.167892] ? lock_acquire+0x10f/0x380 [ 1106.171877] ? check_preemption_disabled+0x34/0x1e0 [ 1106.176888] ? __fget+0x22b/0x3a0 [ 1106.180325] do_writev+0xcc/0x240 [ 1106.183756] ? vfs_writev+0x2d0/0x2d0 [ 1106.187535] ? do_clock_gettime+0xb0/0xb0 [ 1106.191661] ? do_syscall_64+0x43/0x4b0 [ 1106.195611] ? SyS_readv+0x30/0x30 [ 1106.199130] do_syscall_64+0x19b/0x4b0 [ 1106.203000] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 1106.208174] RIP: 0033:0x457521 [ 1106.211346] RSP: 002b:00007f6a2b384ba0 EFLAGS: 00000293 ORIG_RAX: 0000000000000014 [ 1106.219030] RAX: ffffffffffffffda RBX: 000000000000002a RCX: 0000000000457521 [ 1106.226275] RDX: 0000000000000001 RSI: 00007f6a2b384bf0 RDI: 00000000000000f0 [ 1106.233519] RBP: 0000000020000640 R08: 00000000000000f0 R09: 0000000000000000 [ 1106.240767] R10: 0000000000000000 R11: 0000000000000293 R12: 00007f6a2b3856d4 [ 1106.248025] R13: 00000000004c53b4 R14: 00000000004d9900 R15: 00000000ffffffff [ 1106.255639] Kernel Offset: 0x11c00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 1106.266574] Rebooting in 86400 seconds..