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Wed, 11 Sep 2024 07:03:02 +0000 (GMT) Message-ID: Date: Wed, 11 Sep 2024 12:33:01 +0530 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Content-Language: en-GB To: peterz@infradead.org, tglx@linutronix.de Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, Sachin Sant From: Venkat Rao Bagalkote Subject: [PowerPC][linux-next-6.11-rc7-20240910] Kernel Warnings at kernel/jump_label.c:266 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: 3nRN1RfavNm0kPdLEa_fMj95EXRZJ3m0 X-Proofpoint-GUID: 3nRN1RfavNm0kPdLEa_fMj95EXRZJ3m0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-10_12,2024-09-09_02,2024-09-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 suspectscore=0 priorityscore=1501 bulkscore=0 spamscore=0 phishscore=0 lowpriorityscore=0 mlxscore=0 mlxlogscore=666 impostorscore=0 clxscore=1011 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2408220000 definitions=main-2409110052 Greetings!!! I am observing kernel warnings while booting with linux-next-6.11-rc7-20240910 kernel. Below are the warnings. [   63.613506] WARNING: CPU: 20 PID: 214 at kernel/jump_label.c:266 static_key_dec+0x78/0x8c [   63.613518] Modules linked in: ext4 mbcache jbd2 dm_service_time sd_mod sg ibmvfc mlx5_core ibmvnic scsi_transport_fc ibmveth mlxfw psample dm_multipath dm_mirror dm_region_hash dm_log dm_mod fuse [   63.613542] CPU: 20 UID: 0 PID: 214 Comm: kworker/20:1 Not tainted 6.11.0-rc7-next-20240910-auto #1 [   63.613549] Hardware name: IBM,9080-HEX POWER10 (architected) 0x800200 0xf000006 of:IBM,FW1060.00 (NH1060_016) hv:phyp pSeries [   63.613556] Workqueue: cgroup_destroy css_free_rwork_fn [   63.613563] NIP:  c00000000048ca20 LR: c00000000048d060 CTR: c0000000005cb330 [   63.613568] REGS: c00000005a1afa80 TRAP: 0700   Not tainted (6.11.0-rc7-next-20240910-auto) [   63.613573] MSR:  800000000282b033   CR: 24000884  XER: 20040001 [   63.613586] CFAR: c00000000048c9cc IRQMASK: 0 [   63.613586] GPR00: c00000000048d060 c00000005a1afd20 c0000000015f4300 c000000002faa440 [   63.613586] GPR04: 0000000000000001 000000000000009e c0000000084bae00 000000000000009d [   63.613586] GPR08: 0000000000000000 0000000000000000 ffffffffffffffff c00000005b852780 [   63.613586] GPR12: c0000000005cb330 c000000c7db7df00 c0000000001a779c c0000000084b27c0 [   63.613586] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [   63.613586] GPR20: c000000c7b914300 c000000002de73c8 c0000000027b07a8 fffffffffffffef7 [   63.613586] GPR24: 0000000000000402 c00000005b852780 c000000008eabc05 0000000000000010 [   63.613586] GPR28: c000000002d2fac0 c00000000e9d6000 c000000070444000 c000000002faa440 [   63.613633] NIP [c00000000048ca20] static_key_dec+0x78/0x8c [   63.613639] LR [c00000000048d060] __static_key_slow_dec_cpuslocked+0x38/0xb4 [   63.613645] Call Trace: [   63.613647] [c00000005a1afd20] [c00000005a1afd50] 0xc00000005a1afd50 (unreliable) [   63.613653] [c00000005a1afd50] [c00000000048d124] static_key_slow_dec+0x48/0xb0 [   63.613660] [c00000005a1afdc0] [c0000000005cb40c] mem_cgroup_css_free+0xdc/0x104 [   63.613667] [c00000005a1afdf0] [c0000000002c4d58] css_free_rwork_fn+0x70/0x394 [   63.613673] [c00000005a1afe40] [c00000000019a7dc] process_one_work+0x1fc/0x4dc [   63.613680] [c00000005a1afef0] [c00000000019b73c] worker_thread+0x340/0x504 [   63.613686] [c00000005a1aff90] [c0000000001a78cc] kthread+0x138/0x140 [   63.613691] [c00000005a1affe0] [c00000000000df98] start_kernel_thread+0x14/0x18 [   63.613697] Code: 7c0004ac 7c074800 40820018 38600001 5463063e 4e800020 60000000 60000000 7ce93b78 4bffffa4 60000000 60000000 <0fe00000> 38600001 7c60189e 5463063e [   63.613711] ---[ end trace 0000000000000000 ]--- Issue is introduced by the commit: de752774f38bb766941ed1bf910ba5a9f6cc6bf7 Reverting the above commit, issue is not seen. Regards, Venkat.