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Message-ID: <202505281424.ee78ec7d-lkp@intel.com>
Date: Wed, 28 May 2025 14:35:05 +0800
From: kernel test robot <oliver.sang@...el.com>
To: Yajun Deng <yajun.deng@...ux.dev>
CC: <oe-lkp@...ts.linux.dev>, <lkp@...el.com>, <netdev@...r.kernel.org>,
<andrew@...n.ch>, <hkallweit1@...il.com>, <linux@...linux.org.uk>,
<davem@...emloft.net>, <edumazet@...gle.com>, <kuba@...nel.org>,
<pabeni@...hat.com>, <linux-kernel@...r.kernel.org>, Yajun Deng
<yajun.deng@...ux.dev>, <oliver.sang@...el.com>
Subject: Re: [PATCH net-next] net: phy: Synchronize c45_ids to phy_id
Hello,
kernel test robot noticed "WARNING:at_drivers/net/phy/phy.c:#_phy_state_machine" on:
commit: 5ba1925a399bc2393c503a70406edea488b549ff ("[PATCH net-next] net: phy: Synchronize c45_ids to phy_id")
url: https://github.com/intel-lab-lkp/linux/commits/Yajun-Deng/net-phy-Synchronize-c45_ids-to-phy_id/20250522-212043
base: https://git.kernel.org/cgit/linux/kernel/git/davem/net-next.git 3da895b23901964fcf23450f10b529d45069f333
patch link: https://lore.kernel.org/all/20250522131918.31454-1-yajun.deng@linux.dev/
patch subject: [PATCH net-next] net: phy: Synchronize c45_ids to phy_id
in testcase: rcutorture
version:
with following parameters:
runtime: 300s
test: cpuhotplug
torture_type: tasks
config: x86_64-randconfig-121-20250524
compiler: clang-20
test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G
(please refer to attached dmesg/kmsg for entire log/backtrace)
+------------------------------------------------------+------------+------------+
| | 3da895b239 | 5ba1925a39 |
+------------------------------------------------------+------------+------------+
| WARNING:at_drivers/net/phy/phy.c:#_phy_state_machine | 0 | 18 |
| RIP:_phy_state_machine | 0 | 18 |
+------------------------------------------------------+------------+------------+
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/202505281424.ee78ec7d-lkp@intel.com
[ 12.608484][ T25] ------------[ cut here ]------------
[ 12.609643][ T25] _phy_start_aneg+0x0/0xf0: returned: -1
[ 12.610888][ T25] WARNING: CPU: 1 PID: 25 at drivers/net/phy/phy.c:1350 _phy_state_machine (drivers/net/phy/phy.c:1350)
[ 12.612870][ T25] Modules linked in:
[ 12.613775][ T25] CPU: 1 UID: 0 PID: 25 Comm: kworker/1:0 Tainted: G T 6.15.0-rc6-01307-g5ba1925a399b #1 PREEMPT(voluntary)
[ 12.614298][ T7] e1000: eth0 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX
[ 12.616470][ T25] Tainted: [T]=RANDSTRUCT
[ 12.619076][ T25] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[ 12.624259][ T1] dsa-loop fixed-0:1f lan2: configuring for phy/gmii link mode
[ 12.626882][ T25] Workqueue: events_power_efficient phy_state_machine
[ 12.628568][ T7] ------------[ cut here ]------------
[ 12.629750][ T25] RIP: 0010:_phy_state_machine (drivers/net/phy/phy.c:1350)
[ 12.630847][ T7] _phy_start_aneg+0x0/0xf0: returned: -1
[ 12.632047][ T25] Code: 49 c7 c6 c0 e3 1d 82 bd 01 00 00 00 83 f8 ed 0f 84 21 01 00 00 85 c0 79 6b 48 c7 c7 96 7b ec 83 4c 89 f6 89 c2 e8 21 7e 0f ff <0f> 0b 48 8d bb f8 05 00 00 e8 63 43 17 ff 84 c0 0f 84 0c 01 00 00
All code
========
0: 49 c7 c6 c0 e3 1d 82 mov $0xffffffff821de3c0,%r14
7: bd 01 00 00 00 mov $0x1,%ebp
c: 83 f8 ed cmp $0xffffffed,%eax
f: 0f 84 21 01 00 00 je 0x136
15: 85 c0 test %eax,%eax
17: 79 6b jns 0x84
19: 48 c7 c7 96 7b ec 83 mov $0xffffffff83ec7b96,%rdi
20: 4c 89 f6 mov %r14,%rsi
23: 89 c2 mov %eax,%edx
25: e8 21 7e 0f ff call 0xffffffffff0f7e4b
2a:* 0f 0b ud2 <-- trapping instruction
2c: 48 8d bb f8 05 00 00 lea 0x5f8(%rbx),%rdi
33: e8 63 43 17 ff call 0xffffffffff17439b
38: 84 c0 test %al,%al
3a: 0f 84 0c 01 00 00 je 0x14c
Code starting with the faulting instruction
===========================================
0: 0f 0b ud2
2: 48 8d bb f8 05 00 00 lea 0x5f8(%rbx),%rdi
9: e8 63 43 17 ff call 0xffffffffff174371
e: 84 c0 test %al,%al
10: 0f 84 0c 01 00 00 je 0x122
[ 12.633319][ T7] WARNING: CPU: 0 PID: 7 at drivers/net/phy/phy.c:1350 _phy_state_machine (drivers/net/phy/phy.c:1350)
[ 12.637175][ T25] RSP: 0018:ffff888102e5fdc8 EFLAGS: 00010246
[ 12.638506][ T7] Modules linked in:
[ 12.639158][ T25]
[ 12.639576][ T7] CPU: 0 UID: 0 PID: 7 Comm: kworker/0:1 Tainted: G T 6.15.0-rc6-01307-g5ba1925a399b #1 PREEMPT(voluntary)
[ 12.639823][ T25] RAX: 0000000000000000 RBX: ffff88813a422000 RCX: 0000000000000000
[ 12.641190][ T7] Tainted: [T]=RANDSTRUCT
[ 12.642046][ T25] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 12.642049][ T25] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
[ 12.642052][ T25] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888100079800
[ 12.642054][ T25] R13: ffff88842fdea840 R14: ffffffff821de3c0 R15: 0000000000000004
[ 12.642057][ T25] FS: 0000000000000000(0000) GS:ffff8884aa5fc000(0000) knlGS:0000000000000000
[ 12.642060][ T25] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 12.642062][ T25] CR2: 00007fc38285a160 CR3: 0000000004296000 CR4: 00000000000006b0
[ 12.642067][ T25] Call Trace:
[ 12.642072][ T25] <TASK>
[ 12.642079][ T25] ? process_scheduled_works (kernel/workqueue.c:3214)
[ 12.642086][ T25] phy_state_machine (drivers/net/phy/phy.c:1612)
[ 12.642093][ T25] ? process_scheduled_works (kernel/workqueue.c:3214)
[ 12.642097][ T25] process_scheduled_works (kernel/workqueue.c:3243)
[ 12.642117][ T25] worker_thread (include/linux/list.h:373 kernel/workqueue.c:946 kernel/workqueue.c:3401)
[ 12.642127][ T25] ? pr_cont_work (kernel/workqueue.c:3346)
[ 12.642130][ T25] kthread (kernel/kthread.c:466)
[ 12.642138][ T25] ? kthread_unuse_mm (kernel/kthread.c:413)
[ 12.642144][ T25] ret_from_fork (arch/x86/kernel/process.c:159)
[ 12.642149][ T25] ? kthread_unuse_mm (kernel/kthread.c:413)
[ 12.642155][ T25] ret_from_fork_asm (arch/x86/entry/entry_64.S:258)
[ 12.642178][ T25] </TASK>
[ 12.642180][ T25] irq event stamp: 14831
[ 12.642182][ T25] hardirqs last enabled at (14837): vprintk_emit (arch/x86/include/asm/irqflags.h:26 arch/x86/include/asm/irqflags.h:109 arch/x86/include/asm/irqflags.h:151 kernel/printk/printk.c:2043 kernel/printk/printk.c:2449)
[ 12.642187][ T25] hardirqs last disabled at (14842): vprintk_emit (kernel/printk/printk.c:2022)
[ 12.642192][ T25] softirqs last enabled at (14648): __irq_exit_rcu (arch/x86/include/asm/jump_label.h:36 kernel/softirq.c:682)
[ 12.642197][ T25] softirqs last disabled at (14643): __irq_exit_rcu (arch/x86/include/asm/jump_label.h:36 kernel/softirq.c:682)
[ 12.642201][ T25] ---[ end trace 0000000000000000 ]---
[ 12.645728][ T1] dsa-loop fixed-0:1f lan3: configuring for phy/gmii link mode
[ 12.648032][ T1] dsa-loop fixed-0:1f lan4: configuring for phy/gmii link mode
[ 12.648206][ T7] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20250528/202505281424.ee78ec7d-lkp@intel.com
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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