audit: type=1804 audit(1659252474.883:134): pid=18966 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir3126849908/syzkaller.fXylZh/150/file1/bus" dev="loop3" ino=13 res=1
==================================================================
BUG: KASAN: use-after-free in __lock_acquire+0x2cb4/0x3ff0 kernel/locking/lockdep.c:3295
Read of size 8 at addr ffff8880ac363638 by task syz-executor.5/18964

CPU: 1 PID: 18964 Comm: syz-executor.5 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1fc/0x2ef lib/dump_stack.c:118
 print_address_description.cold+0x54/0x219 mm/kasan/report.c:256
 kasan_report_error.cold+0x8a/0x1b9 mm/kasan/report.c:354
 kasan_report mm/kasan/report.c:412 [inline]
 __asan_report_load8_noabort+0x88/0x90 mm/kasan/report.c:433
 __lock_acquire+0x2cb4/0x3ff0 kernel/locking/lockdep.c:3295
 lock_acquire+0x170/0x3c0 kernel/locking/lockdep.c:3908
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:135 [inline]
 _raw_spin_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:168
 bpf_tcp_remove+0x427/0xa00 kernel/bpf/sockmap.c:335
 bpf_tcp_close+0x12b/0x390 kernel/bpf/sockmap.c:403
 inet_release+0xd7/0x1e0 net/ipv4/af_inet.c:427
 __sock_release+0xcd/0x2a0 net/socket.c:599
 sock_close+0x15/0x20 net/socket.c:1214
 __fput+0x2ce/0x890 fs/file_table.c:278
 task_work_run+0x148/0x1c0 kernel/task_work.c:113
 exit_task_work include/linux/task_work.h:22 [inline]
 do_exit+0xbf3/0x2be0 kernel/exit.c:870
 do_group_exit+0x125/0x310 kernel/exit.c:967
 get_signal+0x3f2/0x1f70 kernel/signal.c:2589
 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799
 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163
 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:271 [inline]
 do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f8dc4401209
Code: Bad RIP value.
RSP: 002b:00007f8dc2d76168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffe0 RBX: 00007f8dc4513f60 RCX: 00007f8dc4401209
RDX: 0000000000000001 RSI: 0000000020000180 RDI: 0000000000000006
RBP: 00007f8dc445b161 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffec591710f R14: 00007f8dc2d76300 R15: 0000000000022000

Allocated by task 18964:
 kmem_cache_alloc_trace+0x12f/0x380 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+0x2b8/0x510 kernel/bpf/sockmap.c:1657
 find_and_alloc_map kernel/bpf/syscall.c:130 [inline]
 map_create kernel/bpf/syscall.c:510 [inline]
 __do_sys_bpf kernel/bpf/syscall.c:2408 [inline]
 __se_sys_bpf+0x82a/0x3a20 kernel/bpf/syscall.c:2384
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 8345:
 __cache_free mm/slab.c:3503 [inline]
 kfree+0xcc/0x210 mm/slab.c:3822
 process_one_work+0x864/0x1570 kernel/workqueue.c:2153
 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296
 kthread+0x33f/0x460 kernel/kthread.c:259
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415

The buggy address belongs to the object at ffff8880ac363500
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 312 bytes inside of
 512-byte region [ffff8880ac363500, ffff8880ac363700)
The buggy address belongs to the page:
page:ffffea0002b0d8c0 count:1 mapcount:0 mapping:ffff88813bff0940 index:0x0
flags: 0xfff00000000100(slab)
raw: 00fff00000000100 ffffea0002455408 ffffea000246aa08 ffff88813bff0940
raw: 0000000000000000 ffff8880ac363000 0000000100000006 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8880ac363500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880ac363580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8880ac363600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                        ^
 ffff8880ac363680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880ac363700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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