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Fri, 12 Sep 2025 05:21:20 +0000 (GMT) Message-ID: <8957c526-d05c-4c0d-bfed-0eb6e6d2476c@linux.ibm.com> Date: Fri, 12 Sep 2025 10:51:18 +0530 Precedence: bulk X-Mailing-List: linux-xfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Content-Language: en-GB To: linux-fsdevel@vger.kernel.org, riteshh@linux.ibm.com, ojaswin@linux.ibm.com, linux-xfs@vger.kernel.org, LKML , Madhavan Srinivasan , linuxppc-dev , Linux Next Mailing List From: Venkat Rao Bagalkote Subject: [linux-next20250911]Kernel OOPs while running generic/256 on Pmem device Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwOTA2MDE5NSBTYWx0ZWRfX/u/o3cFuWy2j vkGcIOH5ti9KzriPR+gU31G8iE+7UZrNJE1ddlbqU8UxcSofd684kwbybdn304fvB317Jp8ym1e f98cFXhFQTsyUn3frufC5nms4RkEMQu4Rb7XJlrt6snfy5v20JHX+ii7zYMllNig6PiMOBEWicz avnYBeWfSB8j9DnbXj3aX7OmXSDxvcGSHprx5B0oV0nAfKyOnlyXSPw3BwMXrOngXX0hPEq9+Vo Tms1YvK8zMx0/n3g++Wb4z6jXKwxgRVlZbl45YACsE/JBsxX8oHUszdZlPF357vMf4c6LFcrW5z epigq2LNytqTTbTaHwLXLU8OzTWhAb5hOsJn4MoC+dIRJ72SNaCAhqxAjwVRtgXCyATeL9geL+L RH1AGvdU X-Proofpoint-ORIG-GUID: _ZmsZFnLQlcGw0Yal2dPIWEcN6D6sXv4 X-Proofpoint-GUID: _ZmsZFnLQlcGw0Yal2dPIWEcN6D6sXv4 X-Authority-Analysis: v=2.4 cv=StCQ6OO0 c=1 sm=1 tr=0 ts=68c3adda cx=c_pps a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17 a=IkcTkHD0fZMA:10 a=yJojWOMRYYMA:10 a=VwQbUJbxAAAA:8 a=VnNF1IyMAAAA:8 a=izZR_8X7pELvyxFw3OwA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1117,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-09-12_01,2025-09-11_02,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 malwarescore=0 bulkscore=0 clxscore=1011 adultscore=0 suspectscore=0 priorityscore=1501 impostorscore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2507300000 definitions=main-2509060195 Greetings!!! IBM CI has reported a kernel crash, while running generic/256 test case on pmem device from xfstests suite on linux-next20250911 kernel. xfstests: git://git.kernel.org/pub/scm/fs/xfs/xfstests-dev.git local.config: [xfs_dax] export RECREATE_TEST_DEV=true export TEST_DEV=/dev/pmem0 export TEST_DIR=/mnt/test_pmem export SCRATCH_DEV=/dev/pmem0.1 export SCRATCH_MNT=/mnt/scratch_pmem export MKFS_OPTIONS="-m reflink=0 -b size=65536 -s size=512" export FSTYP=xfs export MOUNT_OPTIONS="-o dax" Test case: generic/256 Traces: [  163.371929] ------------[ cut here ]------------ [  163.371936] kernel BUG at lib/list_debug.c:29! [  163.371946] Oops: Exception in kernel mode, sig: 5 [#1] [  163.371954] LE PAGE_SIZE=64K MMU=Radix  SMP NR_CPUS=8192 NUMA pSeries [  163.371965] Modules linked in: xfs nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat nf_nat nf_conntrack bonding tls nf_defrag_ipv6 nf_defrag_ipv4 rfkill ip_set nf_tables nfnetlink sunrpc pseries_rng vmx_crypto dax_pmem fuse ext4 crc16 mbcache jbd2 nd_pmem papr_scm sd_mod libnvdimm sg ibmvscsi ibmveth scsi_transport_srp pseries_wdt [  163.372127] CPU: 22 UID: 0 PID: 130 Comm: kworker/22:0 Kdump: loaded Not tainted 6.17.0-rc5-next-20250911 #1 VOLUNTARY [  163.372142] Hardware name: IBM,9080-HEX Power11 (architected) 0x820200 0xf000007 of:IBM,FW1110.01 (NH1110_069) hv:phyp pSeries [  163.372155] Workqueue: cgroup_free css_free_rwork_fn [  163.372169] NIP:  c000000000d051d4 LR: c000000000d051d0 CTR: 0000000000000000 [  163.372176] REGS: c00000000ba079b0 TRAP: 0700   Not tainted (6.17.0-rc5-next-20250911) [  163.372183] MSR:  800000000282b033   CR: 28000000  XER: 00000006 [  163.372214] CFAR: c0000000002bae9c IRQMASK: 0 [  163.372214] GPR00: c000000000d051d0 c00000000ba07c50 c00000000230a600 0000000000000075 [  163.372214] GPR04: 0000000000000004 0000000000000001 c000000000507e2c 0000000000000001 [  163.372214] GPR08: c000000d0cb87d13 0000000000000000 0000000000000000 a80e000000000000 [  163.372214] GPR12: c00e0001a1970fa2 c000000d0ddec700 c000000000208e58 c000000107b5e190 [  163.372214] GPR16: c00000000d3e5d08 c00000000b71cf78 c00000000d3e5d05 c00000000b71cf30 [  163.372214] GPR20: c00000000b71cf08 c00000000b71cf10 c000000019f58588 c000000004704bc8 [  163.372214] GPR24: c000000107b5e100 c000000004704bd0 0000000000000003 c000000004704bd0 [  163.372214] GPR28: c000000004704bc8 c000000019f585a8 c000000019f53da8 c000000004704bc8 [  163.372315] NIP [c000000000d051d4] __list_add_valid_or_report+0x124/0x188 [  163.372326] LR [c000000000d051d0] __list_add_valid_or_report+0x120/0x188 [  163.372335] Call Trace: [  163.372339] [c00000000ba07c50] [c000000000d051d0] __list_add_valid_or_report+0x120/0x188 (unreliable) [  163.372352] [c00000000ba07ce0] [c000000000834280] mem_cgroup_css_free+0xa0/0x27c [  163.372363] [c00000000ba07d50] [c0000000003ba198] css_free_rwork_fn+0xd0/0x59c [  163.372374] [c00000000ba07da0] [c0000000001f5d60] process_one_work+0x41c/0x89c [  163.372385] [c00000000ba07eb0] [c0000000001f76c0] worker_thread+0x558/0x848 [  163.372394] [c00000000ba07f80] [c000000000209038] kthread+0x1e8/0x230 [  163.372406] [c00000000ba07fe0] [c00000000000ded8] start_kernel_thread+0x14/0x18 [  163.372416] Code: 4b9b1099 60000000 7f63db78 4bae8245 60000000 e8bf0008 3c62ff88 7fe6fb78 7fc4f378 38637d40 4b5b5c89 60000000 <0fe00000> 60000000 60000000 7f83e378 [  163.372453] ---[ end trace 0000000000000000 ]--- [  163.380581] pstore: backend (nvram) writing error (-1) [  163.380593] If you happen to fix this issue, please add below tag. Reported-by: Venkat Rao Bagalkote Regards, Venkat.