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-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <202301110957.4f3cd38e-yujie.liu@intel.com>
Date:   Wed, 11 Jan 2023 09:58:46 +0800
From:   kernel test robot <yujie.liu@...el.com>
To:     Casey Schaufler <casey@...aufler-ca.com>
CC:     <oe-lkp@...ts.linux.dev>, <lkp@...el.com>,
        <linux-kernel@...r.kernel.org>,
        <linux-security-module@...r.kernel.org>,
        <casey.schaufler@...el.com>, <paul@...l-moore.com>,
        <casey@...aufler-ca.com>, <jmorris@...ei.org>,
        <keescook@...omium.org>, <john.johansen@...onical.com>,
        <penguin-kernel@...ove.sakura.ne.jp>,
        <stephen.smalley.work@...il.com>, <linux-api@...r.kernel.org>,
        <mic@...ikod.net>
Subject: Re: [PATCH v5 2/8] LSM: Maintain a table of LSM attribute data

Greeting,

FYI, we noticed WARNING:at_security/security.c:#append_ordered_lsm due to commit (built with gcc-11):

commit: 98221e36622f4dde4afa923518706bd2c8870f00 ("[PATCH v5 2/8] LSM: Maintain a table of LSM attribute data")
url: https://github.com/intel-lab-lkp/linux/commits/Casey-Schaufler/LSM-Maintain-a-table-of-LSM-attribute-data/20230110-030739
base: https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git 0ecc518e5c1a83fbfc6262d20d0df289eafc2207
patch link: https://lore.kernel.org/all/20230109180717.58855-3-casey@schaufler-ca.com/
patch subject: [PATCH v5 2/8] LSM: Maintain a table of LSM attribute data

in testcase: boot

on test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G

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


[    0.472992][    T0] ------------[ cut here ]------------
[    0.472996][    T0] builtin: out of LSM slots!?
[ 0.474006][ T0] WARNING: CPU: 0 PID: 0 at security/security.c:173 append_ordered_lsm (security/security.c:173 (discriminator 1)) 
[    0.474995][    T0] Modules linked in:
[    0.476300][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.2.0-rc1-00014-g98221e36622f #1
[    0.477324][    T0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.0-debian-1.16.0-5 04/01/2014
[ 0.478996][ T0] RIP: 0010:append_ordered_lsm (security/security.c:173 (discriminator 1)) 
[ 0.480366][ T0] Code: 89 f5 53 48 89 fb e8 de fe ff ff 84 c0 75 79 48 63 05 54 76 13 00 83 f8 03 75 13 48 89 ee 48 c7 c7 4d e8 67 82 e8 66 97 55 fe <0f> 0b eb 5a 48 83 7b 18 00 75 08 48 c7 43 18 28 df a3 83 8d 50 01
All code
========
   0:	89 f5                	mov    %esi,%ebp
   2:	53                   	push   %rbx
   3:	48 89 fb             	mov    %rdi,%rbx
   6:	e8 de fe ff ff       	callq  0xfffffffffffffee9
   b:	84 c0                	test   %al,%al
   d:	75 79                	jne    0x88
   f:	48 63 05 54 76 13 00 	movslq 0x137654(%rip),%rax        # 0x13766a
  16:	83 f8 03             	cmp    $0x3,%eax
  19:	75 13                	jne    0x2e
  1b:	48 89 ee             	mov    %rbp,%rsi
  1e:	48 c7 c7 4d e8 67 82 	mov    $0xffffffff8267e84d,%rdi
  25:	e8 66 97 55 fe       	callq  0xfffffffffe559790
  2a:*	0f 0b                	ud2    		<-- trapping instruction
  2c:	eb 5a                	jmp    0x88
  2e:	48 83 7b 18 00       	cmpq   $0x0,0x18(%rbx)
  33:	75 08                	jne    0x3d
  35:	48 c7 43 18 28 df a3 	movq   $0xffffffff83a3df28,0x18(%rbx)
  3c:	83 
  3d:	8d 50 01             	lea    0x1(%rax),%edx

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2    
   2:	eb 5a                	jmp    0x5e
   4:	48 83 7b 18 00       	cmpq   $0x0,0x18(%rbx)
   9:	75 08                	jne    0x13
   b:	48 c7 43 18 28 df a3 	movq   $0xffffffff83a3df28,0x18(%rbx)
  12:	83 
  13:	8d 50 01             	lea    0x1(%rax),%edx
[    0.481996][    T0] RSP: 0000:ffffffff82e03e90 EFLAGS: 00010286
[    0.483388][    T0] RAX: 0000000000000000 RBX: ffffffff83ae7938 RCX: c0000000ffff7fff
[    0.484995][    T0] RDX: 0000000000000000 RSI: 0000000000027ffb RDI: 0000000000000001
[    0.486542][    T0] RBP: ffffffff8265f33d R08: 0000000000000000 R09: 00000000ffff7fff
[    0.487490][    T0] R10: ffffffff82e03d40 R11: ffffffff831d66e8 R12: ffff888100188bd3
[    0.488517][    T0] R13: ffff888100188ba0 R14: 0000000000000001 R15: 0000000000000000
[    0.489495][    T0] FS:  0000000000000000(0000) GS:ffff88842fc00000(0000) knlGS:0000000000000000
[    0.490529][    T0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    0.491364][    T0] CR2: ffff88843ffff000 CR3: 0000000002e0a000 CR4: 00000000000406b0
[    0.492997][    T0] Call Trace:
[    0.494012][    T0]  <TASK>
[ 0.494774][ T0] ordered_lsm_parse (security/security.c:307) 
[ 0.495996][ T0] ordered_lsm_init (security/security.c:379) 
[ 0.496996][ T0] security_init (security/security.c:461) 
[ 0.498304][ T0] start_kernel (init/main.c:1129) 
[ 0.499310][ T0] secondary_startup_64_no_verify (arch/x86/kernel/head_64.S:358) 
[    0.500222][    T0]  </TASK>
[    0.501166][    T0] ---[ end trace 0000000000000000 ]---


If you fix the issue, kindly add following tag
| Reported-by: kernel test robot <yujie.liu@...el.com>
| Link: https://lore.kernel.org/oe-lkp/202301110957.4f3cd38e-yujie.liu@intel.com


To reproduce:

        # build kernel
	cd linux
	cp config-6.2.0-rc1-00014-g98221e36622f .config
	make HOSTCC=gcc-11 CC=gcc-11 ARCH=x86_64 olddefconfig prepare modules_prepare bzImage modules
	make HOSTCC=gcc-11 CC=gcc-11 ARCH=x86_64 INSTALL_MOD_PATH=<mod-install-dir> modules_install
	cd <mod-install-dir>
	find lib/ | cpio -o -H newc --quiet | gzip > modules.cgz


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

        # 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-6.2.0-rc1-00014-g98221e36622f" of type "text/plain" (166962 bytes)

View attachment "job-script" of type "text/plain" (4946 bytes)

Download attachment "dmesg.xz" of type "application/x-xz" (29648 bytes)

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ