| 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
| ||
|
Message-ID: <202502051331.7587ac82-lkp@intel.com>
Date: Wed, 5 Feb 2025 14:08:04 +0800
From: kernel test robot <oliver.sang@...el.com>
To: Russell King <rmk+kernel@...linux.org.uk>
CC: <oe-lkp@...ts.linux.dev>, <lkp@...el.com>, <linux-kernel@...r.kernel.org>,
Jakub Kicinski <kuba@...nel.org>, Jacob Keller <jacob.e.keller@...el.com>,
<netdev@...r.kernel.org>, <oliver.sang@...el.com>
Subject: [linus:master] [net] 03abf2a7c6: WARNING:suspicious_RCU_usage
Hello,
kernel test robot noticed "WARNING:suspicious_RCU_usage" on:
commit: 03abf2a7c65451e663b078b0ed1bfa648cd9380f ("net: phylink: add EEE management")
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master
[test failed on linus/master 5c8c229261f14159b54b9a32f12e5fa89d88b905]
[test failed on linux-next/master 40b8e93e17bff4a4e0cc129e04f9fdf5daa5397e]
in testcase: trinity
version: trinity-i386-abe9de86-1_20230429
with following parameters:
runtime: 300s
group: group-02
nr_groups: 5
config: i386-randconfig-051-20250203
compiler: gcc-12
test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -smp 2 -m 4G
(please refer to attached dmesg/kmsg for entire log/backtrace)
+---------------------------------------------------------------------------+------------+------------+
| | a17ceec62f | 03abf2a7c6 |
+---------------------------------------------------------------------------+------------+------------+
| WARNING:suspicious_RCU_usage | 0 | 36 |
| drivers/net/phy/phy_device.c:#suspicious_rcu_dereference_protected()usage | 0 | 36 |
+---------------------------------------------------------------------------+------------+------------+
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <oliver.sang@...el.com>
| Closes: https://lore.kernel.org/oe-lkp/202502051331.7587ac82-lkp@intel.com
[ 19.591040][ T22] WARNING: suspicious RCU usage
[ 19.592068][ T22] 6.13.0-rc7-01139-g03abf2a7c654 #1 Tainted: G S T
[ 19.593703][ T22] -----------------------------
[ 19.594724][ T22] drivers/net/phy/phy_device.c:2004 suspicious rcu_dereference_protected() usage!
[ 19.596546][ T22]
[ 19.596546][ T22] other info that might help us debug this:
[ 19.596546][ T22]
[ 19.598680][ T22]
[ 19.598680][ T22] rcu_scheduler_active = 2, debug_locks = 1
[ 19.600338][ T22] 4 locks held by kworker/u4:1/22:
[ 19.601463][ T22] #0: c7d1e6b0 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work (kernel/workqueue.c:3211)
[ 19.603512][ T22] #1: c512bf30 (deferred_probe_work){+.+.}-{0:0}, at: process_one_work (kernel/workqueue.c:3212)
[ 19.605344][ T22] #2: c8d1da78 (&dev->mutex){....}-{4:4}, at: device_lock (include/linux/device.h:1015)
[ 19.610278][ T22] #3: c3fba014 (dsa2_mutex){+.+.}-{4:4}, at: dsa_register_switch (net/dsa/dsa.c:1499 net/dsa/dsa.c:1539)
[ 19.612136][ T22]
[ 19.612136][ T22] stack backtrace:
[ 19.613434][ T22] CPU: 0 UID: 0 PID: 22 Comm: kworker/u4:1 Tainted: G S T 6.13.0-rc7-01139-g03abf2a7c654 #1 0503d02651d90c323d4064ac27ee9898a6e76f3e
[ 19.616145][ T22] Tainted: [S]=CPU_OUT_OF_SPEC, [T]=RANDSTRUCT
[ 19.617319][ T22] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 19.619218][ T22] Workqueue: events_unbound deferred_probe_work_func
[ 19.620457][ T22] Call Trace:
[ 19.621167][ T22] dump_stack_lvl (lib/dump_stack.c:123)
[ 19.622090][ T22] dump_stack (lib/dump_stack.c:130)
[ 19.622924][ T22] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6846)
[ 19.623932][ T22] phy_detach (drivers/net/phy/phy_device.c:2004 (discriminator 9))
[ 19.624755][ T22] phylink_connect_phy (drivers/net/phy/phylink.c:2327)
[ 19.625475][ T22] dsa_user_create (net/dsa/user.c:2620 net/dsa/user.c:2655 net/dsa/user.c:2790)
[ 19.626083][ T22] dsa_port_setup (net/dsa/dsa.c:519)
[ 19.626631][ T22] dsa_tree_setup (net/dsa/dsa.c:759 net/dsa/dsa.c:888)
[ 19.627196][ T22] ? dsa_switch_parse_ports (net/dsa/dsa.c:1440)
[ 19.627844][ T22] dsa_register_switch (net/dsa/dsa.c:1525 net/dsa/dsa.c:1539)
[ 19.628455][ T22] ? dev_get_by_name (net/core/dev.c:881)
[ 19.629080][ T22] dsa_loop_drv_probe (drivers/net/dsa/dsa_loop.c:343)
[ 19.629973][ T22] mdio_probe (drivers/net/phy/mdio_device.c:165)
[ 19.630762][ T22] really_probe (drivers/base/dd.c:579 drivers/base/dd.c:658)
[ 19.631583][ T22] __driver_probe_device (drivers/base/dd.c:800)
[ 19.632519][ T22] driver_probe_device (drivers/base/dd.c:830)
[ 19.633287][ T22] __device_attach_driver (drivers/base/dd.c:958)
[ 19.633903][ T22] bus_for_each_drv (drivers/base/bus.c:459)
[ 19.634466][ T22] __device_attach (drivers/base/dd.c:1032)
[ 19.635018][ T22] ? driver_probe_device (drivers/base/dd.c:922)
[ 19.635627][ T22] device_initial_probe (drivers/base/dd.c:1080)
[ 19.636222][ T22] bus_probe_device (drivers/base/bus.c:536)
[ 19.636783][ T22] deferred_probe_work_func (drivers/base/dd.c:124)
[ 19.637569][ T22] process_one_work (include/trace/events/workqueue.h:110 include/trace/events/workqueue.h:110 kernel/workqueue.c:3241)
[ 19.638328][ T22] ? __list_add (include/linux/list.h:150)
[ 19.639013][ T22] process_scheduled_works (kernel/workqueue.c:3317)
[ 19.639878][ T22] worker_thread (include/linux/list.h:373 kernel/workqueue.c:946 kernel/workqueue.c:3399)
[ 19.640635][ T22] kthread (kernel/kthread.c:391)
[ 19.641303][ T22] ? rescuer_thread (kernel/workqueue.c:3344)
[ 19.642153][ T22] ? list_del_init (include/linux/posix-timers.h:225)
[ 19.643006][ T22] ret_from_fork (arch/x86/kernel/process.c:153)
[ 19.643818][ T22] ? list_del_init (include/linux/posix-timers.h:225)
[ 19.644555][ T22] ret_from_fork_asm (arch/x86/entry/entry_32.S:737)
[ 19.645201][ T22] entry_INT80_32 (arch/x86/entry/entry_32.S:945)
[ 19.646149][ T22] dsa-loop fixed-0:1f lan1 (uninitialized): failed to connect to PHY: -EPERM
[ 19.647542][ T22] dsa-loop fixed-0:1f lan1 (uninitialized): error -1 setting up PHY for tree 0, switch 0, port 0
[ 19.649283][ T22] dsa-loop fixed-0:1f lan2 (uninitialized): PHY [dsa-0.0:01] driver [Generic PHY] (irq=POLL)
[ 19.650853][ T22] dsa-loop fixed-0:1f lan2 (uninitialized): failed to connect to PHY: -EPERM
[ 19.652238][ T22] dsa-loop fixed-0:1f lan2 (uninitialized): error -1 setting up PHY for tree 0, switch 0, port 1
[ 19.653856][ T22] dsa-loop fixed-0:1f lan3 (uninitialized): PHY [dsa-0.0:02] driver [Generic PHY] (irq=POLL)
[ 19.655392][ T22] dsa-loop fixed-0:1f lan3 (uninitialized): failed to connect to PHY: -EPERM
[ 19.656689][ T22] dsa-loop fixed-0:1f lan3 (uninitialized): error -1 setting up PHY for tree 0, switch 0, port 2
[ 19.658308][ T22] dsa-loop fixed-0:1f lan4 (uninitialized): PHY [dsa-0.0:03] driver [Generic PHY] (irq=POLL)
[ 19.659841][ T22] dsa-loop fixed-0:1f lan4 (uninitialized): failed to connect to PHY: -EPERM
[ 19.661168][ T22] dsa-loop fixed-0:1f lan4 (uninitialized): error -1 setting up PHY for tree 0, switch 0, port 3
[ 19.663018][ T22] DSA: tree 0 setup
[ 19.663591][ T22] dsa-loop fixed-0:1f: DSA mockup driver: 0x1f
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20250205/202502051331.7587ac82-lkp@intel.com
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
Powered by blists - more mailing lists