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BUG: KASAN: use-after-free in lockdep_register_key+0x356/0x3e0 kernel/locking/lockdep.c:1182
Read of size 8 at addr ffff888013cdfad8 by task syz-executor.5/25603

CPU: 0 PID: 25603 Comm: syz-executor.5 Not tainted 5.9.0-syzkaller #0
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+0x107/0x163 lib/dump_stack.c:118
 print_address_description.constprop.0.cold+0xae/0x4c8 mm/kasan/report.c:385
 __kasan_report mm/kasan/report.c:545 [inline]
 kasan_report.cold+0x1f/0x37 mm/kasan/report.c:562
 lockdep_register_key+0x356/0x3e0 kernel/locking/lockdep.c:1182
 htab_init_buckets kernel/bpf/hashtab.c:144 [inline]
 htab_map_alloc+0x6c5/0x14a0 kernel/bpf/hashtab.c:521
 find_and_alloc_map kernel/bpf/syscall.c:122 [inline]
 map_create kernel/bpf/syscall.c:825 [inline]
 __do_sys_bpf+0xa80/0x5180 kernel/bpf/syscall.c:4381
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45deb9
Code: 0d 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 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fec16ebec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 0000000000001a00 RCX: 000000000045deb9
RDX: 000000000000003c RSI: 00000000204f9fe4 RDI: 0000000000000000
RBP: 000000000118bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c
R13: 00007ffdad64c05f R14: 00007fec16ebf9c0 R15: 000000000118bf2c

Allocated by task 1202:
 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48
 kasan_set_track mm/kasan/common.c:56 [inline]
 __kasan_kmalloc.constprop.0+0xc2/0xd0 mm/kasan/common.c:461
 slab_post_alloc_hook mm/slab.h:526 [inline]
 slab_alloc_node mm/slub.c:2891 [inline]
 __kmalloc_node_track_caller+0x1eb/0x410 mm/slub.c:4495
 __kmalloc_reserve net/core/skbuff.c:142 [inline]
 __alloc_skb+0xae/0x550 net/core/skbuff.c:210
 alloc_skb_fclone include/linux/skbuff.h:1144 [inline]
 tcp_send_fin+0x1be/0xbb0 net/ipv4/tcp_output.c:3407
 tcp_close+0xb3a/0x1210 net/ipv4/tcp.c:2491
 inet_release+0x12e/0x280 net/ipv4/af_inet.c:431
 __sock_release net/socket.c:596 [inline]
 sock_release+0x87/0x1b0 net/socket.c:624
 rds_tcp_conn_path_shutdown+0x1e5/0x3f0 net/rds/tcp_connect.c:216
 rds_conn_shutdown+0x23e/0x930 net/rds/connection.c:386
 process_one_work+0x933/0x15a0 kernel/workqueue.c:2272
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2418
 kthread+0x3af/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296

The buggy address belongs to the object at ffff888013cdf800
 which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 728 bytes inside of
 1024-byte region [ffff888013cdf800, ffff888013cdfc00)
The buggy address belongs to the page:
page:00000000bda51aec refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff888013cde800 pfn:0x13cd8
head:00000000bda51aec order:3 compound_mapcount:0 compound_pincount:0
flags: 0xfff00000010200(slab|head)
raw: 00fff00000010200 ffffea0000aaa608 ffffea0000744208 ffff888010041140
raw: ffff888013cde800 000000000010000c 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff888013cdf980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888013cdfa00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888013cdfa80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                    ^
 ffff888013cdfb00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888013cdfb80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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