====== zdb_blkptr_cb: Got error 52 reading  ======

<code>
zdb_blkptr_cb: Got error 52 reading <259, 75932, 0, 17> DVA[0]=<0:158039e9000:6000> [L0 ZFS plain file] fletcher4 lz4 unencrypted LE contiguous unique single size=20000L/6000P birth=62707L/62707P fill=1 cksum=516dd1ace1c:414cbfc202333b:af36411a2766c4f:7bc4d6777673687b -- skipping
</code>

''zdb_blkptr_cb: Got error 52 reading <259, 75932, 0, 17>''
  * ioerr = 52
  * z bookmark objset = 259
  * z bookmark object = 75932
  * z bookmark level = 0
  * z bookmark blkid = 17

Error 52 in linux headers:
<file c usr/include/asm-generic/errno.h>
#define	EBADE		52	/* Invalid exchange */
</file>

But ZFS is using Solaris Porting Layer:
<file c include/os/linux/spl/sys/errno.h>
#define	ECKSUM	EBADE
</file>


DVA[0]=<0:158039e9000:6000> [L0 ZFS plain file] fletcher4 lz4 unencrypted LE contiguous unique single size=20000L/6000P birth=62707L/62707P fill=1 cksum=516dd1ace1c:414cbfc202333b:af36411a2766c4f:7bc4d6777673687b -- skipping
</code>


fio --name=randrw --rw=randrw --size=32GB --direct=1 --ioengine=libaio --iodepth=32