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BUG: KASAN: use-after-free in __lock_acquire+0x33b2/0x48f0 kernel/locking/lockdep.c:3290
Read of size 8 at addr ffff8880a669ddf8 by task syz-executor.1/21922

CPU: 1 PID: 21922 Comm: syz-executor.1 Not tainted 4.19.48 #20
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+0x172/0x1f0 lib/dump_stack.c:113
 print_address_description.cold+0x7c/0x20d mm/kasan/report.c:256
 kasan_report_error mm/kasan/report.c:354 [inline]
 kasan_report mm/kasan/report.c:412 [inline]
 kasan_report.cold+0x8c/0x2ba mm/kasan/report.c:396
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:433
 __lock_acquire+0x33b2/0x48f0 kernel/locking/lockdep.c:3290
 lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:3900
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline]
 _raw_spin_lock_bh+0x33/0x50 kernel/locking/spinlock.c:168
 bpf_tcp_remove+0x42a/0xa20 kernel/bpf/sockmap.c:335
 bpf_tcp_close+0x130/0x390 kernel/bpf/sockmap.c:403
 inet_release+0xff/0x1e0 net/ipv4/af_inet.c:428
 inet6_release+0x53/0x80 net/ipv6/af_inet6.c:472
 __sock_release+0xce/0x2a0 net/socket.c:579
 sock_close+0x1b/0x30 net/socket.c:1140
 __fput+0x2dd/0x8b0 fs/file_table.c:278
 ____fput+0x16/0x20 fs/file_table.c:309
 task_work_run+0x145/0x1c0 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:193 [inline]
 exit_to_usermode_loop+0x273/0x2c0 arch/x86/entry/common.c:167
 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:271 [inline]
 do_syscall_64+0x53d/0x620 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x412f40
Code: 01 f0 ff ff 0f 83 30 1b 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d 4d 33 66 00 00 75 14 b8 03 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 04 1b 00 00 c3 48 83 ec 08 e8 0a fc ff ff
RSP: 002b:00007ffc7290c418 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000006 RCX: 0000000000412f40
RDX: 0000001b2e020000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 0000000000000001 R08: 0000000000000000 R09: ffffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000007610a8
R13: 0000000000000003 R14: 0000000000000000 R15: 000000000075bf2c

Allocated by task 21922:
 save_stack+0x45/0xd0 mm/kasan/kasan.c:448
 set_track mm/kasan/kasan.c:460 [inline]
 kasan_kmalloc mm/kasan/kasan.c:553 [inline]
 kasan_kmalloc+0xce/0xf0 mm/kasan/kasan.c:531
 kmem_cache_alloc_trace+0x152/0x760 mm/slab.c:3625
 kmalloc include/linux/slab.h:515 [inline]
 kzalloc include/linux/slab.h:709 [inline]
 sock_map_alloc kernel/bpf/sockmap.c:1675 [inline]
 sock_map_alloc+0x203/0x430 kernel/bpf/sockmap.c:1657
 find_and_alloc_map kernel/bpf/syscall.c:130 [inline]
 map_create+0x372/0xe90 kernel/bpf/syscall.c:510
 __do_sys_bpf kernel/bpf/syscall.c:2382 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:2359 [inline]
 __x64_sys_bpf+0x2c2/0x4c0 kernel/bpf/syscall.c:2359
 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 10530:
 save_stack+0x45/0xd0 mm/kasan/kasan.c:448
 set_track mm/kasan/kasan.c:460 [inline]
 __kasan_slab_free+0x102/0x150 mm/kasan/kasan.c:521
 kasan_slab_free+0xe/0x10 mm/kasan/kasan.c:528
 __cache_free mm/slab.c:3503 [inline]
 kfree+0xcf/0x220 mm/slab.c:3822
 sock_map_remove_complete kernel/bpf/sockmap.c:1583 [inline]
 sock_map_free+0x345/0x440 kernel/bpf/sockmap.c:1778
 bpf_map_free_deferred+0xb4/0xe0 kernel/bpf/syscall.c:291
 process_one_work+0x989/0x1750 kernel/workqueue.c:2153
 worker_thread+0x98/0xe40 kernel/workqueue.c:2296
 kthread+0x354/0x420 kernel/kthread.c:246
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415

The buggy address belongs to the object at ffff8880a669dcc0
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 312 bytes inside of
 512-byte region [ffff8880a669dcc0, ffff8880a669dec0)
The buggy address belongs to the page:
page:ffffea000299a740 count:1 mapcount:0 mapping:ffff88812c3f0940 index:0xffff8880a669d040
flags: 0x1fffc0000000100(slab)
raw: 01fffc0000000100 ffffea0002816bc8 ffffea00024956c8 ffff88812c3f0940
raw: ffff8880a669d040 ffff8880a669d040 0000000100000004 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8880a669dc80: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb
 ffff8880a669dd00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8880a669dd80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                                ^
 ffff8880a669de00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880a669de80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
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