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Mon, 23 Sep 2024 05:36:44 +0000 (GMT) Message-ID: <03a55b4b-eb45-4187-9de6-ef06f8176d05@linux.vnet.ibm.com> Date: Mon, 23 Sep 2024 11:06:43 +0530 User-Agent: Mozilla Thunderbird Subject: Re: [Bug][Git-Bisect][6.11.0-next-20240917]BUG: Unable to handle kernel data access on read at 0xc00c020000013d88 To: Sergey Senozhatsky Cc: linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, akpm@linux-foundation.org, minchan@kernel.org, terrelln@fb.com, sfr@canb.auug.org.au References: <57130e48-dbb6-4047-a8c7-ebf5aaea93f4@linux.vnet.ibm.com> <20240923021557.GA38742@google.com> Content-Language: en-GB From: Venkat Rao Bagalkote In-Reply-To: <20240923021557.GA38742@google.com> Content-Type: text/plain; charset=UTF-8; format=flowed X-TM-AS-GCONF: 00 X-Proofpoint-GUID: j_6Ip9-DdyJmOeFLwhwqwk8BF74tf54h X-Proofpoint-ORIG-GUID: j_6Ip9-DdyJmOeFLwhwqwk8BF74tf54h Content-Transfer-Encoding: 7bit X-Proofpoint-UnRewURL: 0 URL was un-rewritten Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1051,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-23_02,2024-09-19_01,2024-09-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 adultscore=0 mlxscore=0 mlxlogscore=858 spamscore=0 impostorscore=0 priorityscore=1501 phishscore=0 bulkscore=0 clxscore=1015 lowpriorityscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2408220000 definitions=main-2409230037 Hello, Below is the TC, I was running. https://github.com/avocado-framework-tests/avocado-misc-tests/blob/master/generic/ltp.py Regards, Venkat. On 23/09/24 7:45 am, Sergey Senozhatsky wrote: > Hi, > > On (24/09/22 22:23), Venkat Rao Bagalkote wrote: >> Greetings!!! >> >> I am observing Kernel OOPs on PowerPC system, while running LTP Test case. >> >> [11472.962838] BUG: Unable to handle kernel data access on read at >> 0xc00c020000013d88 >> [11472.962846] Faulting instruction address: 0xc00000000055e2c0 > [..] >> [11472.963005] NIP [c00000000055e2c0] kfree+0x60/0x468 >> [11472.963013] LR [c008000004e02838] zram_destroy_comps+0x5c/0xa4 [zram] >> [11472.963020] Call Trace: >> [11472.963023] [c0000005da817b30] [c00000051f580440] 0xc00000051f580440 >> (unreliable) >> [11472.963028] [c0000005da817ba0] [c008000004e02838] >> zram_destroy_comps+0x5c/0xa4 [zram] >> [11472.963034] [c0000005da817bd0] [c008000004e02d24] >> zram_reset_device+0x178/0x250 [zram] >> [11472.963040] [c0000005da817c20] [c008000004e031e0] reset_store+0xd0/0x174 >> [zram] >> [11472.963046] [c0000005da817c80] [c000000000a85874] >> dev_attr_store+0x34/0x50 >> [11472.963052] [c0000005da817ca0] [c00000000070e7a4] >> sysfs_kf_write+0x64/0x78 >> [11472.963060] [c0000005da817cc0] [c00000000070d2a8] >> kernfs_fop_write_iter+0x1b0/0x290 >> [11472.963066] [c0000005da817d10] [c000000000604868] vfs_write+0x38c/0x488 >> [11472.963071] [c0000005da817dc0] [c000000000604c98] ksys_write+0x84/0x140 > Can you post the script that you run?