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Date: Sat, 25 Feb 2023 21:37:53 +0800
From: kernel test robot <oliver.sang@...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@...aufler-ca.com>,
<paul@...l-moore.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 v6 02/11] 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: af5e9ce5abd1a5a2e91036acd8b340072ad840d6 ("[PATCH v6 02/11] 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/20230223-050902
base: https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git c828441f21ddc819a28b5723a72e3c840e9de1c6
patch link: https://lore.kernel.org/all/20230222200838.8149-3-casey@schaufler-ca.com/
patch subject: [PATCH v6 02/11] 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):
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/202302251600.ad80292-oliver.sang@intel.com
[ 0.397553][ T0] ------------[ cut here ]------------
[ 0.398454][ T0] builtin: out of LSM slots!?
[ 0.399456][ T0] WARNING: CPU: 0 PID: 0 at security/security.c:173 append_ordered_lsm (security/security.c:173 (discriminator 1))
[ 0.401167][ T0] Modules linked in:
[ 0.402167][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.2.0-rc4-00030-gaf5e9ce5abd1 #1
[ 0.403616][ T0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.0-debian-1.16.0-5 04/01/2014
[ 0.404678][ T0] RIP: 0010:append_ordered_lsm (security/security.c:173 (discriminator 1))
[ 0.405466][ T0] Code: 89 f5 53 48 89 fb e8 de fe ff ff 84 c0 75 79 48 63 05 16 8f 13 00 83 f8 03 75 13 48 89 ee 48 c7 c7 34 aa 68 82 e8 1d c2 96 fe <0f> 0b eb 5a 48 83 7b 18 00 75 08 48 c7 43 18 18 3f 65 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 16 8f 13 00 movslq 0x138f16(%rip),%rax # 0x138f2c
16: 83 f8 03 cmp $0x3,%eax
19: 75 13 jne 0x2e
1b: 48 89 ee mov %rbp,%rsi
1e: 48 c7 c7 34 aa 68 82 mov $0xffffffff8268aa34,%rdi
25: e8 1d c2 96 fe callq 0xfffffffffe96c247
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 18 3f 65 movq $0xffffffff83653f18,0x18(%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 18 3f 65 movq $0xffffffff83653f18,0x18(%rbx)
12: 83
13: 8d 50 01 lea 0x1(%rax),%edx
[ 0.406998][ T0] RSP: 0000:ffffffff82a03e90 EFLAGS: 00010286
[ 0.408167][ T0] RAX: 0000000000000000 RBX: ffffffff836fe878 RCX: c0000000ffff7fff
[ 0.409589][ T0] RDX: 0000000000000000 RSI: 0000000000027ffb RDI: 0000000000000001
[ 0.411167][ T0] RBP: ffffffff8266b47d R08: 0000000000000000 R09: 00000000ffff7fff
[ 0.412591][ T0] R10: ffffffff82a03d40 R11: ffffffff82dd70a8 R12: ffff88810018a573
[ 0.414167][ T0] R13: ffff88810018a540 R14: 0000000000000001 R15: 0000000000000000
[ 0.415626][ T0] FS: 0000000000000000(0000) GS:ffff88842fc00000(0000) knlGS:0000000000000000
[ 0.417170][ T0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 0.418468][ T0] CR2: ffff88843ffff000 CR3: 0000000002a0a000 CR4: 00000000000406b0
[ 0.419598][ T0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 0.421167][ T0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 0.422618][ T0] Call Trace:
[ 0.423402][ T0] <TASK>
[ 0.424169][ T0] ordered_lsm_parse (security/security.c:307)
[ 0.425017][ T0] ordered_lsm_init (security/security.c:379)
[ 0.425457][ T0] security_init (security/security.c:459)
[ 0.426438][ T0] start_kernel (init/main.c:1129)
[ 0.427441][ T0] secondary_startup_64_no_verify (arch/x86/kernel/head_64.S:358)
[ 0.428466][ T0] </TASK>
[ 0.429401][ T0] ---[ end trace 0000000000000000 ]---
[ 0.430466][ T0] LSM: initializing lsm=capability,yama,integrity
[ 0.431488][ T0] Yama: becoming mindful.
[ 0.433189][ T0] Mount-cache hash table entries: 32768 (order: 6, 262144 bytes, linear)
[ 0.434656][ T0] Mountpoint-cache hash table entries: 32768 (order: 6, 262144 bytes, linear)
[ 0.436718][ T0] Last level iTLB entries: 4KB 0, 2MB 0, 4MB 0
[ 0.437498][ T0] Last level dTLB entries: 4KB 0, 2MB 0, 4MB 0, 1GB 0
[ 0.439173][ T0] Spectre V1 : Mitigation: usercopy/swapgs barriers and __user pointer sanitization
[ 0.440620][ T0] Spectre V2 : Mitigation: Retpolines
[ 0.441458][ T0] Spectre V2 : Spectre v2 / SpectreRSB mitigation: Filling RSB on context switch
[ 0.443167][ T0] Spectre V2 : Spectre v2 / SpectreRSB : Filling RSB on VMEXIT
[ 0.444582][ T0] Speculative Store Bypass: Vulnerable
[ 0.445466][ T0] MDS: Vulnerable: Clear CPU buffers attempted, no microcode
[ 0.447166][ T0] MMIO Stale Data: Unknown: No mitigations
[ 0.475387][ T0] Freeing SMP alternatives memory: 44K
[ 0.476416][ T1] smpboot: CPU0: Intel Xeon E312xx (Sandy Bridge) (family: 0x6, model: 0x2a, stepping: 0x1)
[ 0.477947][ T1] cblist_init_generic: Setting adjustable number of callback queues.
[ 0.478169][ T1] cblist_init_generic: Setting shift to 1 and lim to 1.
[ 0.479233][ T1] cblist_init_generic: Setting shift to 1 and lim to 1.
To reproduce:
# build kernel
cd linux
cp config-6.2.0-rc4-00030-gaf5e9ce5abd1 .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-rc4-00030-gaf5e9ce5abd1" of type "text/plain" (167484 bytes)
View attachment "job-script" of type "text/plain" (4949 bytes)
Download attachment "dmesg.xz" of type "application/x-xz" (29456 bytes)
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