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Message-ID: <202210311456.2d2c7899-yujie.liu@intel.com>
Date: Mon, 31 Oct 2022 15:28:22 +0800
From: kernel test robot <yujie.liu@...el.com>
To: Jinlong Chen <nickyc975@....edu.cn>
CC: <oe-lkp@...ts.linux.dev>, <lkp@...el.com>,
<linux-block@...r.kernel.org>, <linux-nvme@...ts.infradead.org>,
<axboe@...nel.dk>, <kbusch@...nel.org>, <hch@....de>,
<sagi@...mberg.me>, <bvanassche@....org>,
<linux-kernel@...r.kernel.org>, <nickyc975@....edu.cn>
Subject: Re: [RESEND PATCH v2 3/3] block: hide back blk_freeze_queue_start
and export its blk-mq alias
Greeting,
FYI, we noticed WARNING:at_block/blk-mq.c:#blk_mq_freeze_queue due to commit (built with gcc-11):
commit: c39dd1922bb12913c74552b8685fa08c818c0f0b ("[RESEND PATCH v2 3/3] block: hide back blk_freeze_queue_start and export its blk-mq alias")
url: https://github.com/intel-lab-lkp/linux/commits/Jinlong-Chen/queue-freezing-improvement-and-cleanups/20221030-132846
base: https://git.kernel.org/cgit/linux/kernel/git/axboe/linux-block.git for-next
patch link: https://lore.kernel.org/linux-block/3f2b51cc7f5c21e49bfa089e594cb203a4015183.1667107410.git.nickyc975@zju.edu.cn
patch subject: [RESEND PATCH v2 3/3] block: hide back blk_freeze_queue_start and export its blk-mq alias
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):
[ 51.738147][ T1] ------------[ cut here ]------------
[ 51.739393][ T1] WARNING: CPU: 0 PID: 1 at block/blk-mq.c:169 blk_mq_freeze_queue (??:?)
[ 51.741212][ T1] Modules linked in:
[ 51.742143][ T1] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.1.0-rc2-00131-gc39dd1922bb1 #7
[ 51.744035][ T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.0-debian-1.16.0-4 04/01/2014
[ 51.746130][ T1] RIP: 0010:blk_mq_freeze_queue (??:?)
[ 51.747380][ T1] Code: fd 48 83 c7 30 48 89 fa 48 c1 ea 03 80 3c 02 00 75 1c 48 83 7d 30 00 74 11 48 89 ef e8 7d bc fd ff 48 89 ef 5d e9 d4 a9 ff ff <0f> 0b eb eb e8 4b 87 8d ff eb dd 66 0f 1f 84 00 00 00 00 00 0f 1f
All code
========
0: fd std
1: 48 83 c7 30 add $0x30,%rdi
5: 48 89 fa mov %rdi,%rdx
8: 48 c1 ea 03 shr $0x3,%rdx
c: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1)
10: 75 1c jne 0x2e
12: 48 83 7d 30 00 cmpq $0x0,0x30(%rbp)
17: 74 11 je 0x2a
19: 48 89 ef mov %rbp,%rdi
1c: e8 7d bc fd ff callq 0xfffffffffffdbc9e
21: 48 89 ef mov %rbp,%rdi
24: 5d pop %rbp
25: e9 d4 a9 ff ff jmpq 0xffffffffffffa9fe
2a:* 0f 0b ud2 <-- trapping instruction
2c: eb eb jmp 0x19
2e: e8 4b 87 8d ff callq 0xffffffffff8d877e
33: eb dd jmp 0x12
35: 66 0f 1f 84 00 00 00 nopw 0x0(%rax,%rax,1)
3c: 00 00
3e: 0f .byte 0xf
3f: 1f (bad)
Code starting with the faulting instruction
===========================================
0: 0f 0b ud2
2: eb eb jmp 0xffffffffffffffef
4: e8 4b 87 8d ff callq 0xffffffffff8d8754
9: eb dd jmp 0xffffffffffffffe8
b: 66 0f 1f 84 00 00 00 nopw 0x0(%rax,%rax,1)
12: 00 00
14: 0f .byte 0xf
15: 1f (bad)
[ 51.751305][ T1] RSP: 0000:ffffc9000001fb48 EFLAGS: 00010246
[ 51.752597][ T1] RAX: dffffc0000000000 RBX: ffff888151d69000 RCX: ffff8881b0e6cee0
[ 51.754303][ T1] RDX: 1ffff1102a3b6a8d RSI: ffffffff8409eb00 RDI: ffff888151db5468
[ 51.756001][ T1] RBP: ffff888151db5438 R08: 0000000000000001 R09: ffffffff85d3f903
[ 51.761843][ T1] R10: fffffbfff0ba7f20 R11: 0000000000000001 R12: ffff88814d39f210
[ 51.763631][ T1] R13: ffff888151db5438 R14: ffff888151db54f0 R15: ffff888151db54f0
[ 51.765781][ T1] FS: 0000000000000000(0000) GS:ffff88839d300000(0000) knlGS:0000000000000000
[ 51.767816][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 51.769216][ T1] CR2: 0000000000000000 CR3: 000000000502a000 CR4: 00000000000406e0
[ 51.770953][ T1] Call Trace:
[ 51.771779][ T1] <TASK>
[ 51.772539][ T1] blk_iolatency_init (??:?)
[ 51.773716][ T1] ? blk_throtl_init (??:?)
[ 51.774886][ T1] blkcg_init_disk (??:?)
[ 51.775995][ T1] __alloc_disk_node (??:?)
[ 51.777114][ T1] __blk_alloc_disk (??:?)
[ 51.778193][ T1] brd_alloc (brd.c:?)
[ 51.779308][ T1] ? brd_lookup_page (brd.c:?)
[ 51.780458][ T1] ? preempt_count_add (??:?)
[ 51.793870][ T1] ? __up_write (rwsem.c:?)
[ 51.794957][ T1] ? debugfs_create_dir (??:?)
[ 51.796180][ T1] ? ramdisk_size (brd.c:?)
[ 51.797244][ T1] brd_init (brd.c:?)
[ 51.798304][ T1] ? ramdisk_size (brd.c:?)
[ 51.799393][ T1] do_one_initcall (??:?)
[ 51.800434][ T1] ? trace_event_raw_event_initcall_level (??:?)
[ 51.801841][ T1] ? parse_one (??:?)
[ 51.802859][ T1] ? lock_is_held_type (??:?)
[ 51.803992][ T1] ? lock_is_held_type (??:?)
[ 51.805144][ T1] do_initcalls (main.c:?)
[ 51.806214][ T1] kernel_init_freeable (main.c:?)
[ 51.807402][ T1] ? console_on_rootfs (main.c:?)
[ 51.808492][ T1] ? usleep_range_state (??:?)
[ 51.809692][ T1] ? rest_init (main.c:?)
[ 51.810700][ T1] ? rest_init (main.c:?)
[ 51.811697][ T1] kernel_init (main.c:?)
[ 51.812690][ T1] ret_from_fork (??:?)
[ 51.813692][ T1] </TASK>
[ 51.814465][ T1] irq event stamp: 167753
[ 51.815453][ T1] hardirqs last enabled at (167765): __up_console_sem (printk.c:?)
[ 51.817435][ T1] hardirqs last disabled at (167778): __up_console_sem (printk.c:?)
[ 51.819412][ T1] softirqs last enabled at (167580): __do_softirq (??:?)
[ 51.825500][ T1] softirqs last disabled at (167575): __irq_exit_rcu (softirq.c:?)
[ 51.827549][ T1] ---[ 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/202210311456.2d2c7899-yujie.liu@intel.com
To reproduce:
# build kernel
cd linux
cp config-6.1.0-rc2-00131-gc39dd1922bb1 .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://01.org/lkp
View attachment "config-6.1.0-rc2-00131-gc39dd1922bb1" of type "text/plain" (172283 bytes)
View attachment "job-script" of type "text/plain" (5144 bytes)
Download attachment "dmesg.xz" of type "application/x-xz" (33208 bytes)
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