linux-kernel - [lib] 6ee736dc92: BUG:unable_to_handle_page_fault_for

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Date:   Thu, 12 Nov 2020 14:45:32 +0800
From:   kernel test robot <oliver.sang@...el.com>
To:     zengzhaoxiu@....com
Cc:     Jann Horn <jannh@...gle.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        linux-kernel@...r.kernel.org,
        Zhaoxiu Zeng <zhaoxiu.zeng@...il.com>,
        0day robot <lkp@...el.com>, lkp@...ts.01.org
Subject: [lib] 6ee736dc92: BUG:unable_to_handle_page_fault_for_address


Greeting,

FYI, we noticed the following commit (built with gcc-9):

commit: 6ee736dc922a5f81a3a60a72a54ec9392ccfe787 ("[PATCH 2/3] lib: zlib_inflate: improves decompression performance")
url: https://github.com/0day-ci/linux/commits/zengzhaoxiu-163-com/lib-Introduce-copy_from_back/20201110-033522
base: https://git.kernel.org/cgit/linux/kernel/git/soc/soc.git for-next

in testcase: nvml
version: nvml-x86_64-9a558d859-1_20201111
with following parameters:

	test: pmem
	group: util
	nr_pmem: 1
	fs: ext4
	mount_option: dax
	bp_memmap: 32G!4G
	ucode: 0x7000019



on test machine: 16 threads Intel(R) Xeon(R) CPU D-1541 @ 2.10GHz with 48G memory

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


If you fix the issue, kindly add following tag
Reported-by: kernel test robot <oliver.sang@...el.com>


[    5.134501] BUG: unable to handle page fault for address: ffff88880249a4bf
[    5.134783] #PF: supervisor read access in kernel mode
[    5.134783] #PF: error_code(0x0000) - not-present page
[    5.134783] PGD c7f401067 P4D c7f401067 PUD 0 
[    5.134783] Oops: 0000 [#1] SMP PTI
[    5.134783] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.10.0-rc1-00071-g6ee736dc922a #1
[    5.134783] Hardware name: Supermicro SYS-5018D-FN4T/X10SDV-8C-TLN4F, BIOS 1.1 03/02/2016
[    5.134783] RIP: 0010:inflate_fast+0x474/0x600
[    5.134783] Code: cc fd ff ff 48 c7 43 30 e5 6d 5a 82 c7 07 1b 00 00 00 e9 ff fc ff ff 48 c7 43 30 cf 6d 5a 82 c7 07 1b 00 00 00 e9 ec fc ff ff <0f> b6 09 48 83 ed 01 49 83 c0 01 41 88 48 ff 48 83 fd 01 76 3f 44
[    5.134783] RSP: 0000:ffffc90000047c38 EFLAGS: 00010246
[    5.134783] RAX: 000000000000000d RBX: ffff888901886780 RCX: ffff88880249a4bf
[    5.134783] RDX: ffffffff0001a4bd RSI: 0000000000000006 RDI: ffff888902490000
[    5.134783] RBP: 0000000000000007 R08: ffff888902480002 R09: 0000000000000001
[    5.134783] R10: ffff888902490548 R11: ffff888c5af6a3bf R12: 00000000fffe5b43
[    5.134783] R13: 0000000000000007 R14: ffff888c7c9ffe23 R15: ffff888902490ef0
[    5.134783] FS:  0000000000000000(0000) GS:ffff888c7fa00000(0000) knlGS:0000000000000000
[    5.134783] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    5.134783] CR2: ffff88880249a4bf CR3: 0000000c7e20a001 CR4: 00000000003706f0
[    5.134783] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[    5.134783] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[    5.134783] Call Trace:
[    5.134783]  zlib_inflate+0x99a/0x1780
[    5.134783]  ? do_copy+0xe3/0x103
[    5.134783]  ? write_buffer+0x37/0x37
[    5.134783]  ? initrd_load+0x3f/0x3f
[    5.134783]  ? write_buffer+0x37/0x37
[    5.134783]  __gunzip+0x242/0x30c
[    5.134783]  ? bunzip2+0x39d/0x39d
[    5.134783]  ? __gunzip+0x30c/0x30c
[    5.134783]  gunzip+0xe/0x11
[    5.134783]  ? initrd_load+0x3f/0x3f
[    5.134783]  unpack_to_rootfs+0x17d/0x2c1
[    5.134783]  ? initrd_load+0x3f/0x3f
[    5.134783]  ? do_copy+0x103/0x103
[    5.134783]  populate_rootfs+0x59/0x109
[    5.134783]  ? do_copy+0x103/0x103
[    5.134783]  do_one_initcall+0x44/0x200
[    5.134783]  kernel_init_freeable+0x1da/0x241
[    5.134783]  ? rest_init+0xd0/0xd0
[    5.134783]  kernel_init+0xa/0x110
[    5.134783]  ret_from_fork+0x22/0x30
[    5.134783] Modules linked in:
[    5.134783] CR2: ffff88880249a4bf
[    5.134783] ---[ end trace a0a85397603c3dac ]---


To reproduce:

        git clone https://github.com/intel/lkp-tests.git
        cd lkp-tests
        bin/lkp install job.yaml  # job file is attached in this email
        bin/lkp run     job.yaml



Thanks,
Oliver Sang


View attachment "config-5.10.0-rc1-00071-g6ee736dc922a" of type "text/plain" (171537 bytes)

View attachment "job-script" of type "text/plain" (6009 bytes)

Download attachment "dmesg.xz" of type "application/x-xz" (12212 bytes)

View attachment "job.yaml" of type "text/plain" (4852 bytes)