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BUG: KASAN: use-after-free in __lock_acquire+0x34ac/0x49c0 kernel/locking/lockdep.c:3290
Read of size 8 at addr ffff888087019008 by task syz-executor.2/28688

CPU: 0 PID: 28688 Comm: syz-executor.2 Not tainted 4.19.65 #39
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+0x34ac/0x49c0 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
 spin_lock_bh include/linux/spinlock.h:334 [inline]
 psock_map_pop.isra.0+0x2d/0x1f0 kernel/bpf/sockmap.c:302
 bpf_tcp_remove+0x481/0xa20 kernel/bpf/sockmap.c:366
 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: 0033:0x413511
Code: 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 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:00007ffc6642ba90 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000006 RCX: 0000000000413511
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 0000000000000001 R08: ffffffffffffffff R09: ffffffffffffffff
R10: 00007ffc6642bb70 R11: 0000000000000293 R12: 000000000075bf20
R13: 0000000000115092 R14: 00000000007610a8 R15: ffffffffffffffff

Allocated by task 28697:
 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_node_trace+0x153/0x720 mm/slab.c:3668
 kmalloc_node include/linux/slab.h:553 [inline]
 kzalloc_node include/linux/slab.h:720 [inline]
 smap_init_psock kernel/bpf/sockmap.c:1636 [inline]
 __sock_map_ctx_update_elem.isra.0+0x675/0xdc0 kernel/bpf/sockmap.c:1940
 sock_hash_ctx_update_elem.isra.0+0x6c2/0x10d0 kernel/bpf/sockmap.c:2411
 sock_hash_update_elem+0x246/0x4b0 kernel/bpf/sockmap.c:2495
 map_update_elem+0x791/0xda0 kernel/bpf/syscall.c:821
 __do_sys_bpf kernel/bpf/syscall.c:2396 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:2367 [inline]
 __x64_sys_bpf+0x2ec/0x4c0 kernel/bpf/syscall.c:2367
 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 7968:
 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
 smap_gc_work+0x7e5/0xab0 kernel/bpf/sockmap.c:1629
 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 ffff888087018dc0
 which belongs to the cache kmalloc-1024 of size 1024
The buggy address is located 584 bytes inside of
 1024-byte region [ffff888087018dc0, ffff8880870191c0)
The buggy address belongs to the page:
page:ffffea00021c0600 count:1 mapcount:0 mapping:ffff88812c3f0ac0 index:0x0 compound_mapcount: 0
flags: 0x1fffc0000008100(slab|head)
raw: 01fffc0000008100 ffffea0002833408 ffffea00027e0c08 ffff88812c3f0ac0
kobject: 'loop1' (00000000fed127be): fill_kobj_path: path = '/devices/virtual/block/loop1'
raw: 0000000000000000 ffff888087018040 0000000100000007 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff888087018f00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888087018f80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888087019000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                      ^
 ffff888087019080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888087019100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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