linux-kernel - [ima] 05af459445: WARNING: CPU: 0 PID: 1 at init/main.c:790 do_one

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Date:   Tue, 30 Aug 2016 00:27:36 +0800
From:   kernel test robot <xiaolong.ye@...el.com>
To:     Mimi Zohar <zohar@...ux.vnet.ibm.com>
Cc:     lkp@...org, linux-security-module@...r.kernel.org,
        linux-ima-devel@...ts.sourceforge.net,
        Mimi Zohar <zohar@...ux.vnet.ibm.com>,
        LKML <linux-kernel@...r.kernel.org>
Subject: [ima]  05af459445: WARNING: CPU: 0 PID: 1 at init/main.c:790
 do_one_initcall+0x13f/0x150


FYI, we noticed the following commit:

https://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity.git next-restore-kexec
commit 05af45944548af658bd34885e70255aeb3156af2 ("ima: store the builtin/custom template definitions in a list")

in testcase: boot

on test machine: qemu-system-x86_64 -enable-kvm -cpu kvm64,+ssse3 -smp 2 -m 8G

caused below changes:


+----------------+------------+------------+
|                | 1cc4066e79 | 05af459445 |
+----------------+------------+------------+
| boot_successes | 2          | 0          |
+----------------+------------+------------+



[    6.848816] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x209746ac25a, max_idle_ns: 440795298337 ns
[    6.852984] ima: No TPM chip found, activating TPM-bypass!
[    6.855137] ------------[ cut here ]------------
[    6.857068] WARNING: CPU: 0 PID: 1 at init/main.c:790 do_one_initcall+0x13f/0x150
[    6.860666] initcall init_ima+0x0/0x35 returned with preemption imbalance 
[    6.863085] Modules linked in:
[    6.864802] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.8.0-rc1-00027-g05af459 #5
[    6.868110] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[    6.871710]  0000000000000000 ffff88022a16bd78 ffffffff8144c479 ffff88022a16bdc8
[    6.875448]  0000000000000000 ffff88022a16bdb8 ffffffff8107e6cb 0000031611fa5240
[    6.879205]  0000000000000000 ffffffff8203e2ae 0000000000000000 ffffffff81ff589b
[    6.883065] Call Trace:
[    6.884506]  [<ffffffff8144c479>] dump_stack+0x63/0x8a
[    6.886492]  [<ffffffff8107e6cb>] __warn+0xcb/0xf0
[    6.888410]  [<ffffffff8203e2ae>] ? hash_setup+0xb3/0xb3
[    6.890521]  [<ffffffff81ff589b>] ? set_debug_rodata+0x12/0x12
[    6.892720]  [<ffffffff8107e73f>] warn_slowpath_fmt+0x4f/0x60
[    6.894883]  [<ffffffff8203e285>] ? hash_setup+0x8a/0xb3
[    6.896956]  [<ffffffff8203e2ae>] ? hash_setup+0xb3/0xb3
[    6.899018]  [<ffffffff8203e2ae>] ? hash_setup+0xb3/0xb3
[    6.901115]  [<ffffffff8100227f>] do_one_initcall+0x13f/0x150
[    6.903292]  [<ffffffff81ff589b>] ? set_debug_rodata+0x12/0x12
[    6.905466]  [<ffffffff81ff6106>] kernel_init_freeable+0x198/0x225
[    6.907734]  [<ffffffff819221fe>] kernel_init+0xe/0x100
[    6.909800]  [<ffffffff8192fbbf>] ret_from_fork+0x1f/0x40
[    6.911909]  [<ffffffff819221f0>] ? rest_init+0x90/0x90
[    6.913971] ---[ end trace c327d0ded2ed29ff ]---
[    6.915923] evm: HMAC attrs: 0x1






Thanks,
Kernel Test Robot

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