FYI, we noticed the below changes on

git://flatbed.openfabrics.org/~amirv/linux.git for-upstream
commit ccd57b1bd32460d27bbb9c599e795628a3c66983 ("rhashtable: Add immediate rehash during insertion")


+---------------------------------------------------------+------------+------------+
|                                                         | b9ecfdaa10 | ccd57b1bd3 |
+---------------------------------------------------------+------------+------------+
| boot_successes                                          | 20         | 0          |
| early-boot-hang                                         | 1          |            |
| boot_failures                                           | 0          | 10         |
| WARNING:at_lib/rhashtable.c:#rhashtable_insert_rehash() | 0          | 10         |
| backtrace:test_rhashtable                               | 0          | 10         |
| backtrace:test_rht_init                                 | 0          | 10         |
| backtrace:kernel_init_freeable                          | 0          | 10         |
+---------------------------------------------------------+------------+------------+


[    3.857520] Running resizable hashtable tests...
[    3.857883]   Adding 2048 keys
[    3.862557] ------------[ cut here ]------------
[    3.863095] WARNING: CPU: 0 PID: 1 at lib/rhashtable.c:410 rhashtable_insert_rehash+0x101/0x201()
[    3.863856] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.0.0-rc5-01065-gd5c1d8c #1427
[    3.864460]  00000000 80273e90 81ac8366 00000000 00000000 80273eac 8109d724 0000019a
[    3.865164]  8165a792 95da9700 00000001 00000010 80273ebc 8109d88a 00000009 00000000
[    3.866109]  80273edc 8165a792 95da9780 00000000 82d746c0 fffffff5 95da9700 95dac540
[    3.866794] Call Trace:
[    3.867000]  [<81ac8366>] dump_stack+0x105/0x1d2
[    3.867356]  [<8109d724>] warn_slowpath_common+0xe1/0x122
[    3.867770]  [<8165a792>] ? rhashtable_insert_rehash+0x101/0x201
[    3.868253]  [<8109d88a>] warn_slowpath_null+0x2b/0x3d
[    3.868662]  [<8165a792>] rhashtable_insert_rehash+0x101/0x201
[    3.869280]  [<822b5fd0>] test_rhashtable+0x245/0xa62
[    3.869832]  [<822b67ed>] ? test_rhashtable+0xa62/0xa62
[    3.870314]  [<822b686b>] test_rht_init+0x7e/0xad
[    3.870710]  [<8225aace>] do_one_initcall+0x1ed/0x367
[    3.871137]  [<8225aee3>] kernel_init_freeable+0x29b/0x409
[    3.871801]  [<81ab8658>] kernel_init+0x16/0x1d4
[    3.872265]  [<81ade541>] ret_from_kernel_thread+0x21/0x30
[    3.872685]  [<81ab8642>] ? rest_init+0x1c7/0x1c7
[    3.873139] ---[ end trace ff89956aa4e2a9cf ]---
[    3.873837] crc32: CRC_LE_BITS = 64, CRC_BE BITS = 64



Thanks,
Ying Huang