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Message-ID: <20211219132044.GF14057@xsang-OptiPlex-9020>
Date: Sun, 19 Dec 2021 21:20:44 +0800
From: kernel test robot <oliver.sang@...el.com>
To: Waiman Long <longman@...hat.com>
Cc: 0day robot <lkp@...el.com>, LKML <linux-kernel@...r.kernel.org>,
lkp@...ts.01.org, Johannes Weiner <hannes@...xchg.org>,
Michal Hocko <mhocko@...nel.org>,
Vladimir Davydov <vdavydov.dev@...il.com>,
Andrew Morton <akpm@...ux-foundation.org>,
cgroups@...r.kernel.org, linux-mm@...ck.org,
Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
Thomas Gleixner <tglx@...utronix.de>,
Waiman Long <longman@...hat.com>
Subject: [mm/memcg] 3928ba024a: WARNING:possible_recursive_locking_detected
Greeting,
FYI, we noticed the following commit (built with gcc-9):
commit: 3928ba024a93a8556532c3c53e651169be83c061 ("[PATCH-next v3] mm/memcg: Properly handle memcg_stock access for PREEMPT_RT")
url: https://github.com/0day-ci/linux/commits/Waiman-Long/mm-memcg-Properly-handle-memcg_stock-access-for-PREEMPT_RT/20211214-224558
patch link: https://lore.kernel.org/lkml/20211214144412.447035-1-longman@redhat.com
in testcase: boot
on test machine: qemu-system-x86_64 -enable-kvm -cpu Icelake-Server -smp 4 -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>
[ 9.553151][ C0] WARNING: possible recursive locking detected
[ 9.553540][ C0] 5.16.0-rc5-00001-g3928ba024a93 #1 Not tainted
[ 9.553934][ C0] --------------------------------------------
[ 9.554331][ C0] ksoftirqd/0/12 is trying to acquire lock:
[ 9.554690][ C0] ffffffffad262940 (&stock->lock){..-.}-{2:2}, at: local_lock_acquire (include/linux/local_lock_internal.h:28)
[ 9.555355][ C0]
[ 9.555355][ C0] but task is already holding lock:
[ 9.555804][ C0] ffffffffad262940 (&stock->lock){..-.}-{2:2}, at: local_lock_acquire (include/linux/local_lock_internal.h:28)
[ 9.556418][ C0]
[ 9.556418][ C0] other info that might help us debug this:
[ 9.556917][ C0] Possible unsafe locking scenario:
[ 9.556917][ C0]
[ 9.557370][ C0] CPU0
[ 9.557570][ C0] ----
[ 9.557771][ C0] lock(&stock->lock);
[ 9.558026][ C0] lock(&stock->lock);
[ 9.558280][ C0]
[ 9.558280][ C0] *** DEADLOCK ***
[ 9.558280][ C0]
[ 9.558780][ C0] May be due to missing lock nesting notation
[ 9.558780][ C0]
[ 9.559305][ C0] 2 locks held by ksoftirqd/0/12:
[ 9.559611][ C0] #0: ffffffffad221580 (rcu_callback){....}-{0:0}, at: rcu_process_callbacks (kernel/rcu/tiny.c:129)
[ 9.560212][ C0] #1: ffffffffad262940 (&stock->lock){..-.}-{2:2}, at: local_lock_acquire (include/linux/local_lock_internal.h:28)
[ 9.560848][ C0]
[ 9.560848][ C0] stack backtrace:
[ 9.561207][ C0] CPU: 0 PID: 12 Comm: ksoftirqd/0 Not tainted 5.16.0-rc5-00001-g3928ba024a93 #1
[ 9.561764][ C0] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[ 9.562329][ C0] Call Trace:
[ 9.562553][ C0] <TASK>
[ 9.562736][ C0] validate_chain (kernel/locking/lockdep.c:3790)
[ 9.563035][ C0] __lock_acquire (kernel/locking/lockdep.c:5027)
[ 9.563325][ C0] lock_acquire (kernel/locking/lockdep.c:438 kernel/locking/lockdep.c:5639)
[ 9.563604][ C0] ? put_obj_stock (include/linux/local_lock_internal.h:29)
[ 9.563889][ C0] ? find_held_lock (kernel/locking/lockdep.c:5130)
[ 9.564181][ C0] ? get_obj_stock (include/linux/rcupdate.h:273 include/linux/rcupdate.h:721)
[ 9.564466][ C0] local_lock_acquire (include/linux/local_lock_internal.h:30)
[ 9.564830][ C0] ? put_obj_stock (include/linux/local_lock_internal.h:29)
[ 9.565115][ C0] refill_stock (mm/memcontrol.c:2215 (discriminator 3))
[ 9.565383][ C0] obj_cgroup_uncharge_pages (mm/memcontrol.c:2996)
[ 9.565719][ C0] drain_obj_stock (arch/x86/include/asm/atomic.h:53 include/linux/atomic/atomic-instrumented.h:56 mm/memcontrol.c:3173)
[ 9.566005][ C0] refill_obj_stock (include/linux/percpu-refcount.h:222 include/linux/memcontrol.h:825 mm/memcontrol.c:3228)
[ 9.566297][ C0] memcg_slab_free_hook (mm/slab.h:207 mm/slab.h:365)
[ 9.566608][ C0] ? rcu_process_callbacks (include/linux/rcupdate.h:273 kernel/rcu/tiny.c:102 kernel/rcu/tiny.c:133)
[ 9.566952][ C0] kmem_cache_free (mm/slub.c:3446 mm/slub.c:3514 mm/slub.c:3530)
[ 9.567250][ C0] ? free_inode_nonrcu (fs/inode.c:221)
[ 9.567556][ C0] rcu_process_callbacks (include/linux/rcupdate.h:273 kernel/rcu/tiny.c:102 kernel/rcu/tiny.c:133)
[ 9.567880][ C0] __do_softirq (arch/x86/include/asm/jump_label.h:27 include/linux/jump_label.h:212 include/trace/events/irq.h:142 kernel/softirq.c:559)
[ 9.568158][ C0] ? sort_range (kernel/smpboot.c:107)
[ 9.568426][ C0] run_ksoftirqd (kernel/softirq.c:412 kernel/softirq.c:922)
[ 9.568700][ C0] smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 4))
[ 9.569003][ C0] kthread (kernel/kthread.c:329)
[ 9.569252][ C0] ? set_kthread_struct (kernel/kthread.c:272)
[ 9.569562][ C0] ret_from_fork (arch/x86/entry/entry_64.S:301)
[ 9.569838][ C0] </TASK>
[ OK ] Started Create Static Device Nodes in /dev.
[ OK ] Reached target Local File Systems (Pre).
[ OK ] Reached target Local File Systems.
Starting Create Volatile Files and Directories...
Starting Preprocess NFS configuration...
Starting udev Kernel Device Manager...
[ OK ] Started Create Volatile Files and Directories.
[ OK ] Started Preprocess NFS configuration.
[ OK ] Reached target NFS client services.
Starting RPC bind portmap service...
Starting Network Time Synchronization...
Starting Update UTMP about System Boot/Shutdown...
[ OK ] Started udev Kernel Device Manager.
[ OK ] Started RPC bind portmap service.
[ OK ] Started udev Coldplug all Devices.
Starting Helper to synchronize boot up for ifupdown...
[ OK ] Reached target Remote File Systems (Pre).
[ OK ] Reached target Remote File Systems.
[ OK ] Reached target RPC Port Mapper.
[ OK ] Started Helper to synchronize boot up for ifupdown.
[FAILED] Failed to start Update UTMP about System Boot/Shutdown.
See 'systemctl status systemd-update-utmp.service' for details.
Starting Raise network interfaces...
[ OK ] Started Raise network interfaces.
[ OK ] Reached target Network.
[ OK ] Started Network Time Synchronization.
[ OK ] Reached target System Time Synchronized.
[ OK ] Reached target System Initialization.
[ OK ] Started Daily apt download activities.
[ OK ] Started Daily Cleanup of Temporary Directories.
[ OK ] Started Daily rotation of log files.
[ OK ] Listening on D-Bus System Message Bus Socket.
[ OK ] Reached target Sockets.
[ OK ] Reached target Basic System.
[ OK ] Started Regular background program processing daemon.
Starting LKP bootstrap...
[ 9.728013][ C0] random: fast init done
Starting System Logging Service...
Starting LSB: OpenIPMI Driver init script...
Starting Login Service...
Starting OpenBSD Secure Shell server...
[ OK ] Started D-Bus System Message Bus.
[ 9.776118][ T219] random: dbus-daemon: uninitialized urandom read (12 bytes read)
[ 9.778254][ T219] random: dbus-daemon: uninitialized urandom read (12 bytes read)
Starting Permit User Sessions...
Starting /etc/rc.local Compatibility...
To reproduce:
# build kernel
cd linux
cp config-5.16.0-rc5-00001-g3928ba024a93 .config
make HOSTCC=gcc-9 CC=gcc-9 ARCH=x86_64 olddefconfig prepare modules_prepare bzImage modules
make HOSTCC=gcc-9 CC=gcc-9 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.
---
0DAY/LKP+ Test Infrastructure Open Source Technology Center
https://lists.01.org/hyperkitty/list/lkp@lists.01.org Intel Corporation
Thanks,
Oliver Sang
View attachment "config-5.16.0-rc5-00001-g3928ba024a93" of type "text/plain" (133587 bytes)
View attachment "job-script" of type "text/plain" (5092 bytes)
Download attachment "dmesg.xz" of type "application/x-xz" (13708 bytes)
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