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BUG: KASAN: use-after-free in get_fuse_conn_super fs/fuse/fuse_i.h:844 [inline]
BUG: KASAN: use-after-free in fuse_test_super+0x42/0x58 fs/fuse/inode.c:1633
Read of size 8 at addr ffffffe00a012040 by task syz-executor.1/5411

CPU: 1 PID: 5411 Comm: syz-executor.1 Not tainted 5.15.0-rc1-syzkaller-00001-g64a19591a293 #0
Hardware name: riscv-virtio,qemu (DT)
Call Trace:
[<ffffffff8000957e>] dump_backtrace+0x2e/0x3c arch/riscv/kernel/stacktrace.c:112

Allocated by task 5406:
(stack is not available)

Freed by task 5406:
(stack is not available)

The buggy address belongs to the object at ffffffe00a012040
 which belongs to the cache kmalloc-32 of size 32
The buggy address is located 0 bytes inside of
 32-byte region [ffffffe00a012040, ffffffe00a012060)
The buggy address belongs to the page:
page:ffffffcf02288480 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x8a212
flags: 0xffe000000000200(slab|node=0|zone=0|lastcpupid=0x7ff)
raw: 0ffe000000000200 ffffffcf022bdf80 0000000a0000000a ffffffe005601500
raw: 0000000000000000 0000000000400040 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 1, ts 25012079900, free_ts 0
page_owner allocation stack trace missing
page_owner free stack trace missing

Memory state around the buggy address:
 ffffffe00a011f00: 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc
 ffffffe00a011f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffffffe00a012000: 00 00 00 fc fc fc fc fc fa fb fb fb fc fc fc fc
                                           ^
 ffffffe00a012080: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
 ffffffe00a012100: fa fb fb fb fc fc fc fc fa fb fb fb fc fc fc fc
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