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Date: Tue, 14 Mar 2023 17:15:30 +0800
From: kernel test robot <oliver.sang@...el.com>
To: Thomas Weißschuh <linux@...ssschuh.net>
CC: <oe-lkp@...ts.linux.dev>, <lkp@...el.com>,
Mirsad Todorovac <mirsad.todorovac@....unizg.hr>,
<linux-block@...r.kernel.org>, Jens Axboe <axboe@...nel.dk>,
<linux-kernel@...r.kernel.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Thomas Weißschuh <linux@...ssschuh.net>
Subject: Re: [PATCH] block: don't embed integrity_kobj into gendisk
Greeting,
FYI, we noticed WARNING:at_lib/kobject.c:#kobject_get due to commit (built with gcc-11):
commit: a3e3d566c4472dd5079a8f99e6b8ae259bcfe429 ("[PATCH] block: don't embed integrity_kobj into gendisk")
url: https://github.com/intel-lab-lkp/linux/commits/Thomas-Wei-schuh/block-don-t-embed-integrity_kobj-into-gendisk/20230310-042440
patch link: https://lore.kernel.org/all/20230309-kobj_release-gendisk_integrity-v1-1-a240f54eac60@weissschuh.net/
patch subject: [PATCH] block: don't embed integrity_kobj into gendisk
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/202303141612.8a6b6b04-oliver.sang@intel.com
[ 20.061287][ T135] ------------[ cut here ]------------
[ 20.062355][ T135] kobject: '(null)' (00000000a80e27c2): is not initialized, yet kobject_get() is being called.
[ 20.063941][ T135] WARNING: CPU: 0 PID: 135 at lib/kobject.c:632 kobject_get (kbuild/src/x86_64/lib/kobject.c:632)
[ 20.065168][ T135] Modules linked in: sr_mod(+) cdrom intel_rapl_msr bochs(+) intel_rapl_common sg crct10dif_pclmul drm_vram_helper crc32_pclmul ata_generic drm_ttm_helper crc32c_intel ppdev ghash_clmulni_intel ttm drm_kms_helper ata_piix sha512_ssse3 joydev rapl libata parport_pc i2c_piix4 syscopyarea serio_raw sysfillrect sysimgblt ipmi_devintf ipmi_msghandler parport drm fuse ip_tables
[ 20.070566][ T135] CPU: 0 PID: 135 Comm: systemd-udevd Not tainted 6.3.0-rc1-00107-ga3e3d566c447 #1
[ 20.071982][ T135] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.0-debian-1.16.0-5 04/01/2014
[ 20.073618][ T135] RIP: 0010:kobject_get (kbuild/src/x86_64/lib/kobject.c:632)
[ 20.074487][ T135] Code: 44 24 38 85 c0 74 3b 8d 50 01 09 c2 78 20 4c 89 e0 41 5c c3 cc cc cc cc 48 8b 37 48 89 fa 48 c7 c7 68 86 74 82 e8 74 1c 23 ff <0f> 0b eb c4 be 01 00 00 00 e8 a6 30 83 ff 4c 89 e0 41 5c c3 cc cc
All code
========
0: 44 24 38 rex.R and $0x38,%al
3: 85 c0 test %eax,%eax
5: 74 3b je 0x42
7: 8d 50 01 lea 0x1(%rax),%edx
a: 09 c2 or %eax,%edx
c: 78 20 js 0x2e
e: 4c 89 e0 mov %r12,%rax
11: 41 5c pop %r12
13: c3 retq
14: cc int3
15: cc int3
16: cc int3
17: cc int3
18: 48 8b 37 mov (%rdi),%rsi
1b: 48 89 fa mov %rdi,%rdx
1e: 48 c7 c7 68 86 74 82 mov $0xffffffff82748668,%rdi
25: e8 74 1c 23 ff callq 0xffffffffff231c9e
2a:* 0f 0b ud2 <-- trapping instruction
2c: eb c4 jmp 0xfffffffffffffff2
2e: be 01 00 00 00 mov $0x1,%esi
33: e8 a6 30 83 ff callq 0xffffffffff8330de
38: 4c 89 e0 mov %r12,%rax
3b: 41 5c pop %r12
3d: c3 retq
3e: cc int3
3f: cc int3
Code starting with the faulting instruction
===========================================
0: 0f 0b ud2
2: eb c4 jmp 0xffffffffffffffc8
4: be 01 00 00 00 mov $0x1,%esi
9: e8 a6 30 83 ff callq 0xffffffffff8330b4
e: 4c 89 e0 mov %r12,%rax
11: 41 5c pop %r12
13: c3 retq
14: cc int3
15: cc int3
[ 20.077668][ T135] RSP: 0018:ffffc900005b3b60 EFLAGS: 00010282
[ 20.078759][ T135] RAX: 0000000000000000 RBX: ffff888100419308 RCX: 0000000000000000
[ 20.080086][ T135] RDX: ffff88842fc28800 RSI: ffff88842fc1c700 RDI: ffff88842fc1c700
[ 20.081443][ T135] RBP: ffff888129a7cc40 R08: 0000000000000000 R09: 00000000ffff7fff
[ 20.082794][ T135] R10: ffffc900005b3a00 R11: ffffffff82bd8d88 R12: ffff888129a7c358
[ 20.083956][ T135] R13: ffff888129a7cc40 R14: ffff888129a7cc48 R15: ffff888100419308
[ 20.085254][ T135] FS: 00007fad8b3ea8c0(0000) GS:ffff88842fc00000(0000) knlGS:0000000000000000
[ 20.086675][ T135] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 20.087790][ T135] CR2: 00007f6231713000 CR3: 000000010095a000 CR4: 00000000000006f0
[ 20.090711][ T135] Call Trace:
[ 20.092700][ T135] <TASK>
[ 20.094808][ T135] kobject_add_internal (kbuild/src/x86_64/include/linux/spinlock.h:350 kbuild/src/x86_64/lib/kobject.c:171 kbuild/src/x86_64/lib/kobject.c:222)
[ 20.097699][ T135] kobject_init_and_add (kbuild/src/x86_64/lib/kobject.c:366 kbuild/src/x86_64/lib/kobject.c:449)
[ 20.100311][ T135] blk_integrity_add (kbuild/src/x86_64/block/blk-integrity.c:463)
[ 20.102625][ T135] device_add_disk (kbuild/src/x86_64/block/genhd.c:483)
[ 20.104734][ T135] sr_probe (kbuild/src/x86_64/drivers/scsi/sr.c:695) sr_mod
[ 20.107144][ T135] really_probe (kbuild/src/x86_64/drivers/base/dd.c:552 kbuild/src/x86_64/drivers/base/dd.c:631)
[ 20.109364][ T135] __driver_probe_device (kbuild/src/x86_64/drivers/base/dd.c:709 kbuild/src/x86_64/drivers/base/dd.c:766)
[ 20.111710][ T135] driver_probe_device (kbuild/src/x86_64/drivers/base/dd.c:798)
[ 20.113734][ T135] __driver_attach (kbuild/src/x86_64/drivers/base/dd.c:1185)
[ 20.115965][ T135] ? __pfx___driver_attach (kbuild/src/x86_64/drivers/base/dd.c:1125)
[ 20.118091][ T135] bus_for_each_dev (kbuild/src/x86_64/drivers/base/bus.c:368)
[ 20.120112][ T135] bus_add_driver (kbuild/src/x86_64/drivers/base/bus.c:673)
[ 20.122149][ T135] driver_register (kbuild/src/x86_64/drivers/base/driver.c:246)
[ 20.124546][ T135] ? __pfx_init_module (kbuild/src/x86_64/drivers/scsi/sr.c:147) sr_mod
[ 20.126992][ T135] init_sr (kbuild/src/x86_64/drivers/scsi/sr.c:157) sr_mod
[ 20.129130][ T135] ? __pfx_init_module (kbuild/src/x86_64/drivers/scsi/sr.c:147) sr_mod
[ 20.131362][ T135] do_one_initcall (kbuild/src/x86_64/init/main.c:1306)
[ 20.133391][ T135] ? kmalloc_trace (kbuild/src/x86_64/mm/slab_common.c:1064)
[ 20.135626][ T135] do_init_module (kbuild/src/x86_64/kernel/module/main.c:2464)
[ 20.137569][ T135] __do_sys_finit_module (kbuild/src/x86_64/kernel/module/main.c:2973)
[ 20.139730][ T135] do_syscall_64 (kbuild/src/x86_64/arch/x86/entry/common.c:50 kbuild/src/x86_64/arch/x86/entry/common.c:80)
[ 20.141556][ T135] entry_SYSCALL_64_after_hwframe (kbuild/src/x86_64/arch/x86/entry/entry_64.S:120)
[ 20.144045][ T135] RIP: 0033:0x7fad8b8a39b9
[ 20.145886][ T135] Code: 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d a7 54 0c 00 f7 d8 64 89 01 48
All code
========
0: 00 c3 add %al,%bl
2: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1)
9: 00 00 00
c: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
11: 48 89 f8 mov %rdi,%rax
14: 48 89 f7 mov %rsi,%rdi
17: 48 89 d6 mov %rdx,%rsi
1a: 48 89 ca mov %rcx,%rdx
1d: 4d 89 c2 mov %r8,%r10
20: 4d 89 c8 mov %r9,%r8
23: 4c 8b 4c 24 08 mov 0x8(%rsp),%r9
28: 0f 05 syscall
2a:* 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax <-- trapping instruction
30: 73 01 jae 0x33
32: c3 retq
33: 48 8b 0d a7 54 0c 00 mov 0xc54a7(%rip),%rcx # 0xc54e1
3a: f7 d8 neg %eax
3c: 64 89 01 mov %eax,%fs:(%rcx)
3f: 48 rex.W
Code starting with the faulting instruction
===========================================
0: 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax
6: 73 01 jae 0x9
8: c3 retq
9: 48 8b 0d a7 54 0c 00 mov 0xc54a7(%rip),%rcx # 0xc54b7
10: f7 d8 neg %eax
12: 64 89 01 mov %eax,%fs:(%rcx)
15: 48 rex.W
To reproduce:
# build kernel
cd linux
cp config-6.3.0-rc1-00107-ga3e3d566c447 .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-6.3.0-rc1-00107-ga3e3d566c447" of type "text/plain" (168307 bytes)
View attachment "job-script" of type "text/plain" (4955 bytes)
Download attachment "dmesg.xz" of type "application/x-xz" (29588 bytes)
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