(unnamed net_device) (uninitialized): option lacp_rate: mode dependency failed, not supported in mode balance-rr(0)
proc_fill_super: get root inode failed
 loop1: p1 p2 p3 < > p4 < >
 loop6: p1 p2 p3 < > p4 < >
==================================================================
BUG: KASAN: use-after-free in fast_dput fs/dcache.c:717 [inline]
BUG: KASAN: use-after-free in dput.part.26+0x634/0x7a0 fs/dcache.c:836
Read of size 4 at addr ffff88018a119420 by task syz-executor7/27990

CPU: 0 PID: 27990 Comm: syz-executor7 Not tainted 4.18.0-rc8-next-20180809+ #35
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113
 print_address_description+0x6c/0x20b mm/kasan/report.c:256
 kasan_report_error mm/kasan/report.c:354 [inline]
 kasan_report.cold.7+0x242/0x30d mm/kasan/report.c:412
 __asan_report_load4_noabort+0x14/0x20 mm/kasan/report.c:432
 fast_dput fs/dcache.c:717 [inline]
 dput.part.26+0x634/0x7a0 fs/dcache.c:836
 dput+0x15/0x20 fs/dcache.c:831
 proc_kill_sb+0x125/0x1e0 fs/proc/root.c:209
 deactivate_locked_super+0x97/0x100 fs/super.c:328
 vfs_get_super+0x20f/0x270 fs/super.c:1265
 proc_get_tree+0x88/0xb0 fs/proc/root.c:170
 vfs_get_tree+0x1cb/0x5c0 fs/super.c:1746
 do_new_mount fs/namespace.c:2603 [inline]
 do_mount+0x6f9/0x1e30 fs/namespace.c:2927
 ksys_mount+0x12d/0x140 fs/namespace.c:3143
 __do_sys_mount fs/namespace.c:3157 [inline]
 __se_sys_mount fs/namespace.c:3154 [inline]
 __x64_sys_mount+0xbe/0x150 fs/namespace.c:3154
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x456d89
Code: fd b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ff72fdc9c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ff72fdca6d4 RCX: 0000000000456d89
RDX: 00000000200001c0 RSI: 0000000020000180 RDI: 0000000020000700
RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003
R13: 00000000004d1f78 R14: 00000000004c76c0 R15: 000000000000000d

Allocated by task 27288:
 save_stack+0x43/0xd0 mm/kasan/kasan.c:448
 set_track mm/kasan/kasan.c:460 [inline]
 kasan_kmalloc+0xc4/0xe0 mm/kasan/kasan.c:553
 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:490
 kmem_cache_alloc+0x12e/0x760 mm/slab.c:3554
 __d_alloc+0xc8/0xd50 fs/dcache.c:1617
 d_alloc+0x96/0x380 fs/dcache.c:1701
 d_alloc_name+0xbb/0x120 fs/dcache.c:1755
 proc_setup_self+0xe1/0x3af fs/proc/self.c:43
 proc_fill_super+0x37e/0x630 fs/proc/root.c:144
 vfs_get_super+0x15e/0x270 fs/super.c:1263
 proc_get_tree+0x88/0xb0 fs/proc/root.c:170
 vfs_get_tree+0x1cb/0x5c0 fs/super.c:1746
 do_new_mount fs/namespace.c:2603 [inline]
 do_mount+0x6f9/0x1e30 fs/namespace.c:2927
 ksys_mount+0x12d/0x140 fs/namespace.c:3143
 __do_sys_mount fs/namespace.c:3157 [inline]
 __se_sys_mount fs/namespace.c:3154 [inline]
 __x64_sys_mount+0xbe/0x150 fs/namespace.c:3154
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 4305:
 save_stack+0x43/0xd0 mm/kasan/kasan.c:448
 set_track mm/kasan/kasan.c:460 [inline]
 __kasan_slab_free+0x11a/0x170 mm/kasan/kasan.c:521
 kasan_slab_free+0xe/0x10 mm/kasan/kasan.c:528
 __cache_free mm/slab.c:3498 [inline]
 kmem_cache_free+0x86/0x2d0 mm/slab.c:3756
 __d_free+0x20/0x30 fs/dcache.c:257
 __rcu_reclaim kernel/rcu/rcu.h:236 [inline]
 rcu_do_batch kernel/rcu/tree.c:2576 [inline]
 invoke_rcu_callbacks kernel/rcu/tree.c:2880 [inline]
 __rcu_process_callbacks kernel/rcu/tree.c:2847 [inline]
 rcu_process_callbacks+0xf98/0x2860 kernel/rcu/tree.c:2864
 __do_softirq+0x2e8/0xb17 kernel/softirq.c:292

The buggy address belongs to the object at ffff88018a119420
 which belongs to the cache dentry of size 288
The buggy address is located 0 bytes inside of
 288-byte region [ffff88018a119420, ffff88018a119540)
The buggy address belongs to the page:
page:ffffea0006284640 count:1 mapcount:0 mapping:ffff8801dad75c40 index:0x0
flags: 0x2fffc0000000100(slab)
raw: 02fffc0000000100 ffffea0006282088 ffffea000621e288 ffff8801dad75c40
raw: 0000000000000000 ffff88018a119000 000000010000000b 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff88018a119300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88018a119380: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
>ffff88018a119400: fc fc fc fc fb fb fb fb fb fb fb fb fb fb fb fb
                               ^
 ffff88018a119480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88018a119500: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
==================================================================