linux-kernel - [LKP] [rcutorture] 3b745c8969: WARNING:at_mm/slab_common.c:#kmalloc

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20180726085015.GA29979@shao2-debian>
Date:   Thu, 26 Jul 2018 16:50:15 +0800
From:   kernel test robot <rong.a.chen@...el.com>
To:     Joel Fernandes <joel@...lfernandes.org>
Cc:     "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Stephen Rothwell <sfr@...b.auug.org.au>, lkp@...org
Subject: [LKP] [rcutorture]  3b745c8969:
 WARNING:at_mm/slab_common.c:#kmalloc_slab


FYI, we noticed the following commit (built with gcc-5):

commit: 3b745c8969c752601cb68c82a06735363563ab42 ("rcutorture: Make boost test more robust")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master

in testcase: boot

on test machine: qemu-system-x86_64 -enable-kvm -smp 2 -m 512M

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


+-------------------------------------------------------------+------------+------------+
|                                                             | 450efca718 | 3b745c8969 |
+-------------------------------------------------------------+------------+------------+
| boot_successes                                              | 0          | 0          |
| boot_failures                                               | 0          | 8          |
| WARNING:at_mm/slab_common.c:#kmalloc_slab                   | 0          | 8          |
| RIP:kmalloc_slab                                            | 0          | 8          |
| Mem-Info                                                    | 0          | 8          |
| WARNING:at_kernel/rcu/rcutorture.c:#rcu_torture_stats_print | 0          | 8          |
| RIP:rcu_torture_stats_print                                 | 0          | 8          |
+-------------------------------------------------------------+------------+------------+



[    3.525879] WARNING: CPU: 0 PID: 1 at mm/slab_common.c:1027 kmalloc_slab+0x54/0x60
[    3.527377] CPU: 0 PID: 1 Comm: swapper Tainted: G                T 4.18.0-rc1-00089-g3b745c8 #1
[    3.528821] RIP: 0010:kmalloc_slab+0x54/0x60
[    3.529142] Code: 8b 04 c5 20 8a a6 82 f3 c3 83 ef 01 b8 ff ff ff ff 0f bd c7 83 c0 01 48 8b 04 c5 20 8a a6 82 c3 31 c0 81 e6 00 02 00 00 75 dd <0f> 0b c3 66 0f 1f 84 00 00 00 00 00 89 f7 31 c9 89 d6 81 cf 00 40 
[    3.529142] RSP: 0000:ffffc9000000bd58 EFLAGS: 00010246
[    3.529142] RAX: 0000000000000000 RBX: 0000000000002000 RCX: 0000000000000000
[    3.529142] RDX: ffff88000003c040 RSI: 0000000000000000 RDI: ffffffffffffffff
[    3.529142] RBP: ffffffffffffffff R08: 0000000000000001 R09: 0000000000000000
[    3.529142] R10: ffff8800146ca000 R11: 7374736574203132 R12: 00000000006000c0
[    3.529142] R13: ffffffff82e08404 R14: 0000000000000000 R15: 0000000000000000
[    3.529142] FS:  0000000000000000(0000) GS:ffffffff82c71000(0000) knlGS:0000000000000000
[    3.529142] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    3.529142] CR2: 0000000000000000 CR3: 0000000002c61000 CR4: 00000000000006b0
[    3.529142] Call Trace:
[    3.529142]  ? __kmalloc+0x19/0x1b0
[    3.529142]  ? test_kzalloc+0x122/0x122
[    3.529142]  ? test_kmalloc+0xd9/0x122
[    3.529142]  ? test_module_init+0x71/0xe42
[    3.529142]  ? poison_obj+0x1e/0x30
[    3.529142]  ? ___cache_free+0x204/0x450
[    3.529142]  ? list_sort_test+0x263/0x279
[    3.529142]  ? __virt_addr_valid+0xb2/0xf0
[    3.529142]  ? list_sort_test+0x268/0x279
[    3.529142]  ? test_kzalloc+0x122/0x122
[    3.529142]  ? do_one_initcall+0x73/0x166
[    3.529142]  ? kernel_init_freeable+0x14e/0x1f5
[    3.529142]  ? rest_init+0x150/0x150
[    3.529142]  ? kernel_init+0xf/0x170
[    3.529142]  ? rest_init+0x150/0x150
[    3.529142]  ? rest_init+0x150/0x150
[    3.529142]  ? ret_from_fork+0x1f/0x30
[    3.529142] ---[ end trace dae708fbe548a44a ]---


To reproduce:

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



Thanks,
Rong, Chen

View attachment "config-4.18.0-rc1-00089-g3b745c8" of type "text/plain" (100412 bytes)

View attachment "job-script" of type "text/plain" (3921 bytes)

Download attachment "dmesg.xz" of type "application/x-xz" (15868 bytes)