netdev - [lkp-robot] [rhashtable ] df7008bdd5: Kernel_panic-not_syncing:rtnetlink_init:cannot_initialize

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Message-ID: <20170428021051.GB20875@yexl-desktop>
Date:   Fri, 28 Apr 2017 10:10:51 +0800
From:   kernel test robot <xiaolong.ye@...el.com>
To:     Herbert Xu <herbert@...dor.apana.org.au>
Cc:     David Miller <davem@...emloft.net>, fw@...len.de,
        netdev@...r.kernel.org, Thomas Graf <tgraf@...g.ch>, lkp@...org
Subject: [lkp-robot] [rhashtable ]  df7008bdd5:
 Kernel_panic-not_syncing:rtnetlink_init:cannot_initialize_rtnetlink


FYI, we noticed the following commit:

commit: df7008bdd52176211797a90420f40d5d2d2b90c2 ("rhashtable - Cap total number of entries to 2^31")
url: https://github.com/0day-ci/linux/commits/Herbert-Xu/rhashtable-Cap-total-number-of-entries-to-2-31/20170428-021447


in testcase: boot

on test machine: qemu-system-i386 -enable-kvm -cpu Haswell,+smep,+smap -m 360M

caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):


+---------------------------------------------------------------------+---------------+------------+
|                                                                     | next-20170427 | df7008bdd5 |
+---------------------------------------------------------------------+---------------+------------+
| boot_successes                                                      | 10            | 0          |
| boot_failures                                                       | 0             | 2          |
| Kernel_panic-not_syncing:rtnetlink_init:cannot_initialize_rtnetlink | 0             | 2          |
+---------------------------------------------------------------------+---------------+------------+



[    0.097794] regulator-dummy: no parameters
[    0.098851] regulator-dummy: Failed to create debugfs directory
[    0.098851] regulator-dummy: Failed to create debugfs directory
[    0.100650] NET: Registered protocol family 16
[    0.100650] NET: Registered protocol family 16
[    0.101854] Kernel panic - not syncing: rtnetlink_init: cannot initialize rtnetlink
[    0.101854] 
[    0.101854] Kernel panic - not syncing: rtnetlink_init: cannot initialize rtnetlink
[    0.101854] 
[    0.104030] CPU: 0 PID: 1 Comm: swapper Not tainted 4.11.0-rc8-next-20170427-00001-gdf7008b #64
[    0.104030] CPU: 0 PID: 1 Comm: swapper Not tainted 4.11.0-rc8-next-20170427-00001-gdf7008b #64
[    0.106078] Call Trace:
[    0.106078] Call Trace:
[    0.106672]  dump_stack+0x16/0x18
[    0.106672]  dump_stack+0x16/0x18
[    0.107472]  panic+0x95/0x1b5
[    0.107472]  panic+0x95/0x1b5
[    0.108153]  rtnetlink_init+0x20/0x179
[    0.108153]  rtnetlink_init+0x20/0x179
[    0.109025]  netlink_proto_init+0x119/0x12f
[    0.109025]  netlink_proto_init+0x119/0x12f
[    0.109983]  ? netlink_net_init+0x2d/0x2d
[    0.109983]  ? netlink_net_init+0x2d/0x2d
[    0.110905]  do_one_initcall+0x81/0x116
[    0.110905]  do_one_initcall+0x81/0x116
[    0.111785]  ? parse_args+0x125/0x1e1
[    0.111785]  ? parse_args+0x125/0x1e1
[    0.112629]  ? kernel_init_freeable+0xd3/0x16b
[    0.112629]  ? kernel_init_freeable+0xd3/0x16b
[    0.113644]  kernel_init_freeable+0xf3/0x16b
[    0.113644]  kernel_init_freeable+0xf3/0x16b
[    0.114626]  ? rest_init+0x113/0x113
[    0.114626]  ? rest_init+0x113/0x113
[    0.115452]  kernel_init+0xd/0xd0
[    0.115452]  kernel_init+0xd/0xd0
[    0.116216]  ret_from_fork+0x21/0x2c
[    0.116216]  ret_from_fork+0x21/0x2c

Elapsed time: 10

initrds=(
	/osimage/quantal/quantal-core-i386.cgz


To reproduce:

        git clone https://github.com/01org/lkp-tests.git
        cd lkp-tests
        bin/lkp qemu -k <bzImage> job-script  # job-script is attached in this email



Thanks,
Xiaolong

View attachment "config-4.11.0-rc8-next-20170427-00001-gdf7008b" of type "text/plain" (104196 bytes)

View attachment "job-script" of type "text/plain" (4017 bytes)

Download attachment "dmesg.xz" of type "application/octet-stream" (5948 bytes)