linux-kernel - [lkp-robot] [afs] 5b86d4ff5d: BUG:unable_to_handle

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Message-ID: <20180717043016.GA24376@shao2-debian>
Date:   Tue, 17 Jul 2018 12:30:16 +0800
From:   kernel test robot <rong.a.chen@...el.com>
To:     David Howells <dhowells@...hat.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>, lkp@...org
Subject: [lkp-robot] [afs]  5b86d4ff5d: BUG:unable_to_handle_kernel



FYI, we noticed the following commit (built with gcc-7):

commit: 5b86d4ff5dce3271dff54119e06174dc22422903 ("afs: Implement network namespacing")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master

in testcase: trinity
with following parameters:

	runtime: 300s

test-description: Trinity is a linux system call fuzz tester.
test-url: http://codemonkey.org.uk/projects/trinity/


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

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


+------------------------------------------------------------------+------------+------------+
|                                                                  | 1588def91d | 5b86d4ff5d |
+------------------------------------------------------------------+------------+------------+
| boot_successes                                                   | 31         | 6          |
| boot_failures                                                    | 4          | 35         |
| invoked_oom-killer:gfp_mask=0x                                   | 4          | 2          |
| Mem-Info                                                         | 4          | 2          |
| Out_of_memory:Kill_process                                       | 2          | 2          |
| Kernel_panic-not_syncing:Out_of_memory_and_no_killable_processes | 2          | 2          |
| RIP:copy_fpstate_to_sigframe                                     | 0          | 1          |
| BUG:unable_to_handle_kernel                                      | 0          | 33         |
| Oops:#[##]                                                       | 0          | 33         |
| RIP:rxrpc_rcu_destroy_call                                       | 0          | 33         |
| Kernel_panic-not_syncing:Fatal_exception_in_interrupt            | 0          | 33         |
+------------------------------------------------------------------+------------+------------+



[   20.610136] BUG: unable to handle kernel paging request at ffff880000de4068
[   20.610841] PGD 40da067 P4D 40da067 PUD 40db067 PMD 1bffa067 PTE 8000000000de4060
[   20.611550] Oops: 0002 [#1] PREEMPT SMP DEBUG_PAGEALLOC
[   20.612039] Modules linked in: bochs_drm ttm drm_kms_helper evdev serio_raw drm drm_panel_orientation_quirks cfbfillrect cfbimgblt cfbcopyarea fb_sys_fops syscopyarea sysfillrect sysimgblt fb intel_agp intel_gtt button fbdev agpgart
[   20.613955] CPU: 0 PID: 12 Comm: rcuc/0 Not tainted 4.17.0-rc5-00051-g5b86d4f #1
[   20.614655] RIP: 0010:rxrpc_rcu_destroy_call+0x39/0x50
[   20.615136] RSP: 0018:ffffc9000012be08 EFLAGS: 00010286
[   20.615635] RAX: 0000000080000200 RBX: ffff880000d59700 RCX: 0000000000000201
[   20.616304] RDX: 0000000080000201 RSI: 000000009f670a10 RDI: 00000000ffffffff
[   20.627094] RBP: ffff880000de4000 R08: 00000000686a9aac R09: 0000000000000001
[   20.627813] R10: 0000000000000001 R11: 0000000000000000 R12: ffff88001bddfa00
[   20.628474] R13: ffff88001bddfa38 R14: ffff880000d59700 R15: ffffffff8110333a
[   20.629137] FS:  0000000000000000(0000) GS:ffff88001bc00000(0000) knlGS:0000000000000000
[   20.629861] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.630383] CR2: ffff880000de4068 CR3: 0000000000d67000 CR4: 00000000000006f0
[   20.631031] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   20.631697] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   20.632358] Call Trace:
[   20.632605]  ? rxrpc_process_call+0x820/0x820
[   20.633015]  rcu_do_batch+0x172/0x370
[   20.633432]  rcu_cpu_kthread+0x165/0x170
[   20.633805]  ? smpboot_thread_fn+0x23/0x280
[   20.634197]  ? smpboot_thread_fn+0x6b/0x280
[   20.634595]  smpboot_thread_fn+0x1d3/0x280
[   20.634981]  ? sort_range+0x20/0x20
[   20.635319]  kthread+0x115/0x130
[   20.635641]  ? kthread_create_on_node+0x60/0x60
[   20.636067]  ret_from_fork+0x35/0x40
[   20.636412] Code: 6e ef 00 00 48 8b bb c8 03 00 00 e8 d2 90 9f ff 48 8b bb d0 03 00 00 e8 c6 90 9f ff 48 8b 3d 67 94 91 02 48 89 de e8 97 91 9f ff <3e> ff 4d 68 74 03 5b 5d c3 48 8d 7d 68 5b 5d e9 e3 0d 92 ff 0f 
[   20.648368] RIP: rxrpc_rcu_destroy_call+0x39/0x50 RSP: ffffc9000012be08
[   20.648981] CR2: ffff880000de4068
[   20.649307] ---[ end trace 3db688f433278894 ]---


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-4.17.0-rc5-00051-g5b86d4f" of type "text/plain" (119629 bytes)

Download attachment "dmesg.xz" of type "application/x-xz" (13248 bytes)