FAT-fs (loop3): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
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BUG: KASAN: use-after-free in bpf_tcp_remove+0x814/0xa00 kernel/bpf/sockmap.c:336
Read of size 8 at addr ffff888094e95600 by task syz-executor.0/11107

CPU: 0 PID: 11107 Comm: syz-executor.0 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
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
 bpf_tcp_remove+0x814/0xa00 kernel/bpf/sockmap.c:336
 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
 get_signal+0x1b64/0x1f70 kernel/signal.c:2400
 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: 0033:0x7f3491b2a5a9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f349047c168 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: 0000000000000001 RBX: 00007f3491c4b050 RCX: 00007f3491b2a5a9
RDX: 0000000000000005 RSI: 0000000020005900 RDI: 0000000000000003
RBP: 00007f3491b85580 R08: 00000000200017c0 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdaf38150f R14: 00007f349047c300 R15: 0000000000022000

Allocated by task 11101:
 __do_kmalloc_node mm/slab.c:3689 [inline]
 __kmalloc_node+0x4c/0x70 mm/slab.c:3696
 kmalloc_node include/linux/slab.h:557 [inline]
 bpf_map_area_alloc+0x3b/0x80 kernel/bpf/syscall.c:148
 sock_map_alloc kernel/bpf/sockmap.c:1696 [inline]
 sock_map_alloc+0x443/0x510 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 3467:
 __cache_free mm/slab.c:3503 [inline]
 kfree+0xcc/0x210 mm/slab.c:3822
 kvfree+0x59/0x60 mm/util.c:452
 sock_map_remove_complete kernel/bpf/sockmap.c:1582 [inline]
 sock_map_free+0x327/0x430 kernel/bpf/sockmap.c:1778
 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 ffff888094e95600
 which belongs to the cache kmalloc-192 of size 192
The buggy address is located 0 bytes inside of
 192-byte region [ffff888094e95600, ffff888094e956c0)
The buggy address belongs to the page:
page:ffffea000253a540 count:1 mapcount:0 mapping:ffff88813bff0040 index:0xffff888094e95f00
flags: 0xfff00000000100(slab)
raw: 00fff00000000100 ffffea0002749048 ffffea00027f3748 ffff88813bff0040
raw: ffff888094e95f00 ffff888094e95000 000000010000000d 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff888094e95500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888094e95580: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
>ffff888094e95600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                   ^
 ffff888094e95680: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
 ffff888094e95700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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