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Date: Tue, 10 Jan 2023 15:52:54 +0800
From: kernel test robot <oliver.sang@...el.com>
To: Pali Rohár <pali@...nel.org>
CC: <oe-lkp@...ts.linux.dev>, <lkp@...el.com>,
<linux-fsdevel@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
"OGAWA Hirofumi" <hirofumi@...l.parknet.co.jp>,
Jan Kara <jack@...e.cz>,
"Alexander Viro" <viro@...iv.linux.org.uk>
Subject: Re: [RFC PATCH 3/3] nls: Replace default nls table by correct
iso8859-1 table
Greeting,
FYI, we noticed RIP:strcmp due to commit (built with gcc-11):
commit: 038a8f31f4e69820aa6fd24d8d2f111998939a32 ("[RFC PATCH 3/3] nls: Replace default nls table by correct iso8859-1 table")
url: https://github.com/intel-lab-lkp/linux/commits/Pali-Roh-r/nls-Simplify-ASCII-implementation/20221226-225114
base: https://git.kernel.org/cgit/linux/kernel/git/jack/linux-fs.git for_next
patch link: https://lore.kernel.org/all/20221226144301.16382-4-pali@kernel.org/
patch subject: [RFC PATCH 3/3] nls: Replace default nls table by correct iso8859-1 table
in testcase: xfstests
version: xfstests-x86_64-fb6575e-1_20230102
with following parameters:
disk: 4HDD
fs: ext4
fs2: smbv2
test: generic-group-03
test-description: xfstests is a regression test suite for xfs and other files ystems.
test-url: git://git.kernel.org/pub/scm/fs/xfs/xfstests-dev.git
on test machine: 8 threads Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz (Skylake) with 16G 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>
| Link: https://lore.kernel.org/oe-lkp/202301101354.43acf3b4-oliver.sang@intel.com
[ 88.513573][ T280]
[ 88.531906][ T1438] calling init_dns_resolver+0x0/0x1000 [dns_resolver] @ 1438
[ 88.539223][ T1438] Key type dns_resolver registered
[ 88.544178][ T1438] initcall init_dns_resolver+0x0/0x1000 [dns_resolver] returned 0 after 4968 usecs
[ 88.915310][ T1438] calling init_cifs+0x0/0x1000 [cifs] @ 1438
[ 88.922793][ T1438] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN PTI
[ 88.933987][ T1438] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
[ 88.942226][ T1438] CPU: 5 PID: 1438 Comm: modprobe Tainted: G S 6.1.0-11704-g038a8f31f4e6 #1
[ 88.952115][ T1438] Hardware name: HP HP Z240 SFF Workstation/802E, BIOS N51 Ver. 01.63 10/05/2017
[ 88.961049][ T1438] RIP: 0010:strcmp (kbuild/src/consumer/lib/string.c:281)
[ 88.965481][ T1438] Code: df 41 54 55 53 48 89 fb 48 83 ec 08 eb 08 40 84 ed 74 5d 4c 89 e6 48 89 df 48 83 c3 01 48 89 f8 48 89 fa 48 c1 e8 03 83 e2 07 <42> 0f b6 04 28 38 d0 7f 04 84 c0 75 50 48 89 f0 48 89 f2 0f b6 6b
All code
========
0: df 41 54 filds 0x54(%rcx)
3: 55 push %rbp
4: 53 push %rbx
5: 48 89 fb mov %rdi,%rbx
8: 48 83 ec 08 sub $0x8,%rsp
c: eb 08 jmp 0x16
e: 40 84 ed test %bpl,%bpl
11: 74 5d je 0x70
13: 4c 89 e6 mov %r12,%rsi
16: 48 89 df mov %rbx,%rdi
19: 48 83 c3 01 add $0x1,%rbx
1d: 48 89 f8 mov %rdi,%rax
20: 48 89 fa mov %rdi,%rdx
23: 48 c1 e8 03 shr $0x3,%rax
27: 83 e2 07 and $0x7,%edx
2a:* 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax <-- trapping instruction
2f: 38 d0 cmp %dl,%al
31: 7f 04 jg 0x37
33: 84 c0 test %al,%al
35: 75 50 jne 0x87
37: 48 89 f0 mov %rsi,%rax
3a: 48 89 f2 mov %rsi,%rdx
3d: 0f .byte 0xf
3e: b6 6b mov $0x6b,%dh
Code starting with the faulting instruction
===========================================
0: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax
5: 38 d0 cmp %dl,%al
7: 7f 04 jg 0xd
9: 84 c0 test %al,%al
b: 75 50 jne 0x5d
d: 48 89 f0 mov %rsi,%rax
10: 48 89 f2 mov %rsi,%rdx
13: 0f .byte 0xf
14: b6 6b mov $0x6b,%dh
[ 88.984879][ T1438] RSP: 0018:ffffc90001217a88 EFLAGS: 00010246
[ 88.990781][ T1438] RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff83589fe5
[ 88.998591][ T1438] RDX: 0000000000000000 RSI: ffffffffa2121c00 RDI: 0000000000000000
[ 89.006401][ T1438] RBP: ffffffffa2121c00 R08: 0000000000000001 R09: ffffc90001217a63
[ 89.014209][ T1438] R10: fffff52000242f4c R11: 0000000000000001 R12: ffffffff861052e0
[ 89.022016][ T1438] R13: dffffc0000000000 R14: 0000000000000026 R15: ffffffffa221efc0
[ 89.029829][ T1438] FS: 00007f01fb961540(0000) GS:ffff888366a80000(0000) knlGS:0000000000000000
[ 89.038582][ T1438] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 89.045004][ T1438] CR2: 000056437197c1a8 CR3: 000000013de10001 CR4: 00000000003706e0
[ 89.052812][ T1438] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 89.060623][ T1438] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 89.068430][ T1438] Call Trace:
[ 89.071572][ T1438] <TASK>
[ 89.074365][ T1438] find_nls (kbuild/src/consumer/fs/nls/nls_base.c:280)
[ 89.078284][ T1438] load_nls (kbuild/src/consumer/fs/nls/nls_base.c:293)
[ 89.082114][ T1438] dfs_cache_init (kbuild/src/consumer/fs/cifs/dfs_cache.c:416) cifs
[ 89.087241][ T1438] init_cifs (kbuild/src/consumer/fs/cifs/./trace.h:70 (discriminator 6)) cifs
To reproduce:
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
sudo bin/lkp install job.yaml # job file is attached in this email
bin/lkp split-job --compatible job.yaml # generate the yaml file for lkp run
sudo bin/lkp run generated-yaml-file
# if come across any failure that blocks the test,
# please remove ~/.lkp and /lkp dir to run from a clean state.
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests
View attachment "config-6.1.0-11704-g038a8f31f4e6" of type "text/plain" (171966 bytes)
View attachment "job-script" of type "text/plain" (5873 bytes)
Download attachment "dmesg.xz" of type "application/x-xz" (41528 bytes)
View attachment "xfstests" of type "text/plain" (168815 bytes)
View attachment "job.yaml" of type "text/plain" (4559 bytes)
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