Warning: Permanently added '10.128.15.205' (ECDSA) to the list of known hosts.
[   63.521457] random: sshd: uninitialized urandom read (32 bytes read)
[   63.610550] audit: type=1400 audit(1569049559.981:7): avc:  denied  { map } for  pid=1797 comm="syz-executor126" path="/root/syz-executor126983570" 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
executing program
[   64.350913] ==================================================================
[   64.358372] BUG: KASAN: use-after-free in tcp_init_tso_segs+0x19d/0x1f0
[   64.365118] Read of size 2 at addr ffff8881d09b8a30 by task syz-executor126/1798
[   64.372690] 
[   64.374299] CPU: 0 PID: 1798 Comm: syz-executor126 Not tainted 4.14.145+ #0
[   64.381374] Call Trace:
[   64.383948]  dump_stack+0xca/0x134
[   64.387485]  ? tcp_init_tso_segs+0x19d/0x1f0
[   64.391872]  ? tcp_init_tso_segs+0x19d/0x1f0
[   64.396259]  print_address_description+0x60/0x226
[   64.401099]  ? tcp_init_tso_segs+0x19d/0x1f0
[   64.405487]  ? tcp_init_tso_segs+0x19d/0x1f0
[   64.409870]  __kasan_report.cold+0x1a/0x41
[   64.414088]  ? kvm_guest_cpu_init+0x220/0x220
[   64.418558]  ? tcp_init_tso_segs+0x19d/0x1f0
[   64.422947]  tcp_init_tso_segs+0x19d/0x1f0
[   64.427159]  ? tcp_tso_segs+0x7b/0x1c0
[   64.431038]  tcp_write_xmit+0x15a/0x4730
[   64.435083]  ? memset+0x20/0x40
[   64.438358]  __tcp_push_pending_frames+0xa0/0x230
[   64.443205]  tcp_send_fin+0x154/0xbc0
[   64.447003]  tcp_close+0xc62/0xf40
[   64.450531]  inet_release+0xe9/0x1c0
[   64.454279]  __sock_release+0xd2/0x2c0
[   64.458157]  ? __sock_release+0x2c0/0x2c0
[   64.462291]  sock_close+0x15/0x20
[   64.465734]  __fput+0x25e/0x710
[   64.468997]  task_work_run+0x125/0x1a0
[   64.472874]  do_exit+0x9cb/0x2a20
[   64.476326]  ? mm_update_next_owner+0x610/0x610
[   64.480988]  do_group_exit+0x100/0x2e0
[   64.484855]  SyS_exit_group+0x19/0x20
[   64.488635]  ? do_group_exit+0x2e0/0x2e0
[   64.492672]  do_syscall_64+0x19b/0x520
[   64.496544]  entry_SYSCALL_64_after_hwframe+0x42/0xb7
[   64.501710] RIP: 0033:0x440618
[   64.504877] RSP: 002b:00007fff65354948 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   64.512566] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000440618
[   64.519815] RDX: 0000000000000001 RSI: 000000000000003c RDI: 0000000000000001
[   64.527074] RBP: 00000000004c6970 R08: 00000000000000e7 R09: ffffffffffffffd0
[   64.534324] R10: 0000000020000802 R11: 0000000000000246 R12: 0000000000000001
[   64.541599] R13: 00000000006d95e0 R14: 0000000000000000 R15: 0000000000000000
[   64.548857] 
[   64.550463] Allocated by task 1798:
[   64.554085]  __kasan_kmalloc.part.0+0x53/0xc0
[   64.558643]  kmem_cache_alloc+0xee/0x360
[   64.562706]  __alloc_skb+0xea/0x5c0
[   64.566311]  sk_stream_alloc_skb+0xf4/0x8a0
[   64.570611]  tcp_sendmsg_locked+0xf11/0x2f50
[   64.574996]  tcp_sendmsg+0x2b/0x40
[   64.578525]  inet_sendmsg+0x15b/0x520
[   64.582311]  sock_sendmsg+0xb7/0x100
[   64.585999]  SyS_sendto+0x1de/0x2f0
[   64.589604]  do_syscall_64+0x19b/0x520
[   64.593470]  entry_SYSCALL_64_after_hwframe+0x42/0xb7
[   64.598648]  0xffffffffffffffff
[   64.601901] 
[   64.603504] Freed by task 1798:
[   64.606758]  __kasan_slab_free+0x164/0x210
[   64.610978]  kmem_cache_free+0xd7/0x3b0
[   64.614926]  kfree_skbmem+0x84/0x110
[   64.618617]  tcp_remove_empty_skb+0x264/0x320
[   64.623089]  tcp_sendmsg_locked+0x1c09/0x2f50
[   64.627559]  tcp_sendmsg+0x2b/0x40
[   64.631078]  inet_sendmsg+0x15b/0x520
[   64.634854]  sock_sendmsg+0xb7/0x100
[   64.638558]  SyS_sendto+0x1de/0x2f0
[   64.642161]  do_syscall_64+0x19b/0x520
[   64.646025]  entry_SYSCALL_64_after_hwframe+0x42/0xb7
[   64.651190]  0xffffffffffffffff
[   64.654444] 
[   64.656049] The buggy address belongs to the object at ffff8881d09b8a00
[   64.656049]  which belongs to the cache skbuff_fclone_cache of size 456
[   64.669374] The buggy address is located 48 bytes inside of
[   64.669374]  456-byte region [ffff8881d09b8a00, ffff8881d09b8bc8)
[   64.681138] The buggy address belongs to the page:
[   64.686044] page:ffffea0007426e00 count:1 mapcount:0 mapping:          (null) index:0x0 compound_mapcount: 0
[   64.695988] flags: 0x4000000000010200(slab|head)
[   64.700721] raw: 4000000000010200 0000000000000000 0000000000000000 00000001800c000c
[   64.708577] raw: dead000000000100 dead000000000200 ffff8881dab70400 0000000000000000
[   64.716433] page dumped because: kasan: bad access detected
[   64.722115] 
[   64.723717] Memory state around the buggy address:
[   64.728623]  ffff8881d09b8900: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc
[   64.735956]  ffff8881d09b8980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[   64.743303] >ffff8881d09b8a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   64.750637]                                      ^
[   64.755541]  ffff8881d09b8a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   64.762891]  ffff8881d09b8b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   64.770236] ==================================================================
[   64.777572] Disabling lock debugging due to kernel taint
[   64.783402] Kernel panic - not syncing: panic_on_warn set ...
[   64.783402] 
[   64.790774] CPU: 0 PID: 1798 Comm: syz-executor126 Tainted: G    B           4.14.145+ #0
[   64.799086] Call Trace:
[   64.801656]  dump_stack+0xca/0x134
[   64.805175]  panic+0x1ea/0x3d3
[   64.808343]  ? add_taint.cold+0x16/0x16
[   64.812293]  ? tcp_init_tso_segs+0x19d/0x1f0
[   64.816677]  ? ___preempt_schedule+0x16/0x18
[   64.821079]  ? tcp_init_tso_segs+0x19d/0x1f0
[   64.825462]  end_report+0x43/0x49
[   64.828909]  ? tcp_init_tso_segs+0x19d/0x1f0
[   64.833304]  __kasan_report.cold+0xd/0x41
[   64.837444]  ? kvm_guest_cpu_init+0x220/0x220
[   64.841924]  ? tcp_init_tso_segs+0x19d/0x1f0
[   64.846310]  tcp_init_tso_segs+0x19d/0x1f0
[   64.850521]  ? tcp_tso_segs+0x7b/0x1c0
[   64.854382]  tcp_write_xmit+0x15a/0x4730
[   64.858422]  ? memset+0x20/0x40
[   64.861682]  __tcp_push_pending_frames+0xa0/0x230
[   64.866513]  tcp_send_fin+0x154/0xbc0
[   64.870310]  tcp_close+0xc62/0xf40
[   64.873830]  inet_release+0xe9/0x1c0
[   64.877520]  __sock_release+0xd2/0x2c0
[   64.881396]  ? __sock_release+0x2c0/0x2c0
[   64.885534]  sock_close+0x15/0x20
[   64.888963]  __fput+0x25e/0x710
[   64.892221]  task_work_run+0x125/0x1a0
[   64.896100]  do_exit+0x9cb/0x2a20
[   64.899533]  ? mm_update_next_owner+0x610/0x610
[   64.904184]  do_group_exit+0x100/0x2e0
[   64.908066]  SyS_exit_group+0x19/0x20
[   64.911857]  ? do_group_exit+0x2e0/0x2e0
[   64.915896]  do_syscall_64+0x19b/0x520
[   64.919775]  entry_SYSCALL_64_after_hwframe+0x42/0xb7
[   64.924939] RIP: 0033:0x440618
[   64.928103] RSP: 002b:00007fff65354948 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   64.935798] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000440618
[   64.943043] RDX: 0000000000000001 RSI: 000000000000003c RDI: 0000000000000001
[   64.950291] RBP: 00000000004c6970 R08: 00000000000000e7 R09: ffffffffffffffd0
[   64.957557] R10: 0000000020000802 R11: 0000000000000246 R12: 0000000000000001
[   64.964804] R13: 00000000006d95e0 R14: 0000000000000000 R15: 0000000000000000
[   64.972685] Kernel Offset: 0x20e00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
[   64.983607] Rebooting in 86400 seconds..