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E8AC658056; Thu, 13 Nov 2025 13:17:46 +0000 (GMT) Received: from smtpav03.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 9D2CF5803F; Thu, 13 Nov 2025 13:17:44 +0000 (GMT) Received: from [9.61.246.65] (unknown [9.61.246.65]) by smtpav03.dal12v.mail.ibm.com (Postfix) with ESMTP; Thu, 13 Nov 2025 13:17:44 +0000 (GMT) Message-ID: <65b02403-25e5-4ec3-8577-de1409b0a765@linux.ibm.com> Date: Thu, 13 Nov 2025 18:47:43 +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 Subject: Re: [linux-next20251112]Kernel OOPs while running btrfs/023 test case Content-Language: en-GB From: Venkat Rao Bagalkote To: riteshh@linux.ibm.com, linux-btrfs@vger.kernel.org, Qu Wenruo , David Sterba , LKML , Madhavan Srinivasan , Linux Next Mailing List , Stephen Rothwell References: <83749167-c479-46df-a749-e3f65ffc3964@linux.ibm.com> In-Reply-To: <83749167-c479-46df-a749-e3f65ffc3964@linux.ibm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUxMTA4MDAxOCBTYWx0ZWRfXz7Z2qnzQEpHp 4ueagBXwZwj4c4qLvW8wJ30FSE+pGoHRESOS156MCR872UQd2asPMd8mY5lYRCOJ7W1U8AITPAD TvcymfWTK9GUCQomyp8n9JUo9kuwfrcIIvwQOOw6lTiGwrq4nRIDMa77odWoQtpUl2QefMC68Wk reD5c4/iWQAJBa8f66/r8YPg8Ea3qqYKTZRC9B6r0tXLeDTFBAQV/pmlZwMVHe5yJYcwOTBiyVP OxszzyV5JiebUWls5WC5I0/L/zQ7U6KwaigqWNSVMj/oeDWqJwESAdbb8uAuQJ2l2HlxE01tdAf pks9BVGGlJKA9AwCxLo+b65yzZFU+3Dyk0sPiclZR8nsPIaH4EbtdK8OMon0qOTIGQaRRXxDjyU Zpd7HNVKxCoOq4HiHh5l5eTjPXTyFw== X-Authority-Analysis: v=2.4 cv=GcEaXAXL c=1 sm=1 tr=0 ts=6915da7d cx=c_pps a=AfN7/Ok6k8XGzOShvHwTGQ==:117 a=AfN7/Ok6k8XGzOShvHwTGQ==:17 a=IkcTkHD0fZMA:10 a=6UeiqGixMTsA:10 a=VkNPw1HP01LnGYTKEx00:22 a=VnNF1IyMAAAA:8 a=Qaz22dlSkarScz2rei4A:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=cPQSjfK2_nFv0Q5t_7PE:22 X-Proofpoint-GUID: r2wxRtbciKNXoTH6E_0K6Q97a1WQOzg8 X-Proofpoint-ORIG-GUID: VF3BhNlhs35Kw5IOpFlYidRrItbuCk2d X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2025-11-13_02,2025-11-12_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 malwarescore=0 bulkscore=0 adultscore=0 impostorscore=0 lowpriorityscore=0 clxscore=1015 spamscore=0 priorityscore=1501 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2510240000 definitions=main-2511080018 On 13/11/25 6:21 pm, Venkat Rao Bagalkote wrote: > Greetings!!! > > > IBM CI has reported a kernel crash while running btrfs/023 test from > xfstest suite on IBM Power11 system. > > > Traces: > > > [  184.714500] BTRFS: device fsid b8c762d5-3f1a-4020-bca9-2e7e107e5363 > devid 1 transid 8 /dev/loop1 (7:1) scanned by mkfs.btrfs (2697) > [  184.714612] BTRFS: device fsid b8c762d5-3f1a-4020-bca9-2e7e107e5363 > devid 2 transid 8 /dev/loop2 (7:2) scanned by mkfs.btrfs (2697) > [  184.714731] BTRFS: device fsid b8c762d5-3f1a-4020-bca9-2e7e107e5363 > devid 3 transid 8 /dev/loop3 (7:3) scanned by mkfs.btrfs (2697) > [  184.714825] BTRFS: device fsid b8c762d5-3f1a-4020-bca9-2e7e107e5363 > devid 4 transid 8 /dev/loop4 (7:4) scanned by mkfs.btrfs (2697) > [  184.714918] BTRFS: device fsid b8c762d5-3f1a-4020-bca9-2e7e107e5363 > devid 5 transid 8 /dev/loop5 (7:5) scanned by mkfs.btrfs (2697) > [  184.720659] BTRFS info (device loop1): first mount of filesystem > b8c762d5-3f1a-4020-bca9-2e7e107e5363 > [  184.720694] BTRFS info (device loop1): using crc32c (crc32c-lib) > checksum algorithm > [  184.720708] BTRFS info (device loop1): forcing free space tree for > sector size 4096 with page size 65536 > [  184.725011] BTRFS info (device loop1): checking UUID tree > [  184.725060] BTRFS info (device loop1): enabling ssd optimizations > [  184.725068] BTRFS info (device loop1): turning on async discard > [  184.725075] BTRFS info (device loop1): enabling free space tree > [  184.735050] BUG: Unable to handle kernel data access at > 0x6696fffdda1ea4c2 > [  184.735072] Faulting instruction address: 0xc0000000007bd030 > [  184.735087] Oops: Kernel access of bad area, sig: 11 [#1] > [  184.735101] LE PAGE_SIZE=64K MMU=Radix  SMP NR_CPUS=8192 NUMA pSeries > [  184.735118] Modules linked in: loop 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 nf_defrag_ipv6 > nf_defrag_ipv4 bonding tls ip_set rfkill nf_tables sunrpc nfnetlink > pseries_rng vmx_crypto fuse ext4 crc16 mbcache jbd2 sd_mod sg ibmvscsi > ibmveth scsi_transport_srp pseries_wdt > [  184.735316] CPU: 22 UID: 0 PID: 1948 Comm: systemd-udevd Kdump: > loaded Tainted: G    B               6.18.0-rc5-next-20251112 #1 > VOLUNTARY > [  184.735342] Tainted: [B]=BAD_PAGE > [  184.735352] Hardware name: IBM,9080-HEX Power11 (architected) > 0x820200 0xf000007 of:IBM,FW1110.01 (NH1110_069) hv:phyp pSeries > [  184.735369] NIP:  c0000000007bd030 LR: c0000000007bcef4 CTR: > c000000000902824 > [  184.735386] REGS: c00000006fdb7910 TRAP: 0380   Tainted: G B       >       (6.18.0-rc5-next-20251112) > [  184.735404] MSR:  8000000000009033   CR: > 28004402  XER: 20040000 > [  184.735460] CFAR: c0000000007bcf98 IRQMASK: 0 > [  184.735460] GPR00: c0000000007bcef4 c00000006fdb7bb0 > c0000000026aa100 0000000000000000 > [  184.735460] GPR04: 0000000000000cc0 000000013470ff60 > 00000000000006f0 c0000009906ff4f0 > [  184.735460] GPR08: 669164fddb1e9c02 0000000000000800 > 000000098d420000 0000000000000000 > [  184.735460] GPR12: c000000000902824 c000000991e0e700 > 0000000000000000 0000000000000000 > [  184.735460] GPR16: 0000000000000000 0000000000000000 > 0000000000000000 0000000000000000 > [  184.735460] GPR20: 0000000000000000 0000000000000000 > 0000000000000000 0000000000000000 > [  184.735460] GPR24: 00000000000006ef 0000000000001000 > ffffffffffffffff c00c000000402680 > [  184.735460] GPR28: c0000000008f312c 0000000000000cc0 > 6696fffdda1e9cc2 c00000000701e880 > [  184.735688] NIP [c0000000007bd030] kmem_cache_alloc_noprof+0x4ac/0x708 > [  184.735711] LR [c0000000007bcef4] kmem_cache_alloc_noprof+0x370/0x708 > [  184.735729] Call Trace: > [  184.735738] [c00000006fdb7bb0] [c0000000007bcef4] > kmem_cache_alloc_noprof+0x370/0x708 (unreliable) > [  184.735766] [c00000006fdb7c30] [c0000000008f312c] > getname_flags.part.0+0x54/0x30c > [  184.735793] [c00000006fdb7c80] [c0000000009028a0] > sys_unlinkat+0x7c/0xe4 > [  184.735814] [c00000006fdb7cc0] [c000000000039d50] > system_call_exception+0x1e0/0x450 > [  184.735839] [c00000006fdb7e50] [c00000000000d05c] > system_call_vectored_common+0x15c/0x2ec > [  184.735866] ---- interrupt: 3000 at 0x7fff9df366bc > [  184.735881] NIP:  00007fff9df366bc LR: 00007fff9df366bc CTR: > 0000000000000000 > [  184.735897] REGS: c00000006fdb7e80 TRAP: 3000   Tainted: G B       >       (6.18.0-rc5-next-20251112) > [  184.735913] MSR:  800000000280f033 >   CR: 48004402  XER: 00000000 > [  184.735989] IRQMASK: 0 > [  184.735989] GPR00: 0000000000000124 00007fffe0b3a3a0 > 00007fff9e037d00 0000000000000006 > [  184.735989] GPR04: 000000013470ff60 0000000000000000 > 0000000000001000 00007fff9e0314b8 > [  184.735989] GPR08: 0000000000000271 0000000000000000 > 0000000000000000 0000000000000000 > [  184.735989] GPR12: 0000000000000000 00007fff9e8c4ca0 > 00000001161e5a78 00007fffe0b3ab10 > [  184.735989] GPR16: 0000000000000003 0000000000000000 > 00000001161aaed0 00000001161e9750 > [  184.735989] GPR20: 00007fffe0b3a780 00000001161eb260 > 00000001161eb320 0000000000000008 > [  184.735989] GPR24: 00000001347061c0 0000000000000000 > 0000000000000009 00000001347061c0 > [  184.735989] GPR28: 0000000000000006 00007fffe0b3a53c > 0000000134715740 0000000000100000 > [  184.736216] NIP [00007fff9df366bc] 0x7fff9df366bc > [  184.736231] LR [00007fff9df366bc] 0x7fff9df366bc > [  184.736251] ---- interrupt: 3000 > [  184.736262] Code: f8610030 4082fccc 4bfffc28 2c3e0000 4182ff98 > 2c3b0000 4182ff90 60000000 3b40ffff 813f0030 e91f00c0 38d80001 > <7f7e482a> 7d3e4a14 79270022 552ac03e > [  184.736362] ---[ end trace 0000000000000000 ]--- > Mostly the issue got introduced by one of the below three commits. As reverting these three, this issue is not seen. 9299051573d9 e8ea54f86241 cd93c0aad7e3 > > If you happen to fix this, please add below tag. > > > Reported-by: Venkat Rao Bagalkote > > > Regards, > > Venkat. > >