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Miller" , Andreas Larsson , Arnd Bergmann , Greg Kroah-Hartman , Dan Williams , Vishal Verma , Dave Jiang , Nicolas Pitre , Muchun Song , Oscar Salvador , David Hildenbrand , Konstantin Komarov , Baoquan He , Vivek Goyal , Dave Young , Tony Luck , Reinette Chatre , Dave Martin , James Morse , Alexander Viro , Christian Brauner , Jan Kara , "Liam R . Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Hugh Dickins , Baolin Wang , Uladzislau Rezki , Dmitry Vyukov , Andrey Konovalov , Jann Horn , Pedro Falcato , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-csky@vger.kernel.org, linux-mips@vger.kernel.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, nvdimm@lists.linux.dev, linux-cxl@vger.kernel.org, linux-mm@kvack.org, ntfs3@lists.linux.dev, kexec@lists.infradead.org, kasan-dev@googlegroups.com, Jason Gunthorpe Subject: Re: [PATCH 00/16] expand mmap_prepare functionality, port more users Message-ID: <4fbe6c51-69f4-455e-922f-acdc613108cb-agordeev@linux.ibm.com> References: Precedence: bulk X-Mailing-List: linux-mips@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-TM-AS-GCONF: 00 X-Proofpoint-GUID: 3deOkNqrfHdLIv9wcUPHlUetDtdvUQWz X-Authority-Analysis: v=2.4 cv=Mp1S63ae c=1 sm=1 tr=0 ts=68bfe5e5 cx=c_pps a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17 a=kj9zAlcOel0A:10 a=yJojWOMRYYMA:10 a=rCdDL0ybDgsdDLvqgG0A:9 a=CjuIK1q_8ugA:10 X-Proofpoint-ORIG-GUID: qA00adzFc2mr4mwvlzTl3c7SVFuwc24W X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwOTA2MDAwMCBTYWx0ZWRfX9DH4SXGK5Ef2 wejG4c7pX++RhbA1qSy6joL4Dc2oCsCOSPIhrBxt/QLkDiM3oF5S3fnf0a8rvaceAzUOg6WA1gQ Ir8I+yPvEyV1Im2S29dkEFwOqpdtLAPsWf2TTp0eyOgmPS+IVsDGdHQRHBjWiZ05r0xpu4su3dr m16Ho7NogpEOVcd3h6JEtyn5UfreBb3jlkItkjRqhI4JeeAIMcTnphkaB4l7pHKWbZxIqItt4g7 VpspaOMhadlzbq6FrrwE54z2UGMx4eYQuRZiUQE2/EtFUQMQbKGs7KhlROQVEQLcoAhtD28WCFQ L6pd7Sw8hzkZH/lMoqL2zPGcZXWdwKNG36NITE6JE5TGdgh01ojrh+qdwWmxBmCjCCl7ztPlKTn wVjj1P8/ 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=2025-09-08_06,2025-09-08_02,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 malwarescore=0 clxscore=1011 phishscore=0 spamscore=0 adultscore=0 priorityscore=1501 bulkscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2507300000 definitions=main-2509060000 On Mon, Sep 08, 2025 at 12:10:31PM +0100, Lorenzo Stoakes wrote: Hi Lorenzo, I am getting this warning with this series applied: [Tue Sep 9 10:25:34 2025] ------------[ cut here ]------------ [Tue Sep 9 10:25:34 2025] WARNING: CPU: 0 PID: 563 at mm/memory.c:2942 remap_pfn_range_internal+0x36e/0x420 [Tue Sep 9 10:25:34 2025] Modules linked in: diag288_wdt(E) watchdog(E) ghash_s390(E) des_generic(E) prng(E) aes_s390(E) des_s390(E) libdes(E) sha3_512_s390(E) sha3_256_s390(E) sha_common(E) vfio_ccw(E) mdev(E) vfio_iommu_type1(E) vfio(E) pkey(E) autofs4(E) overlay(E) squashfs(E) loop(E) [Tue Sep 9 10:25:34 2025] Unloaded tainted modules: hmac_s390(E):1 [Tue Sep 9 10:25:34 2025] CPU: 0 UID: 0 PID: 563 Comm: makedumpfile Tainted: G E 6.17.0-rc4-gcc-mmap-00410-g87e982e900f0 #288 PREEMPT [Tue Sep 9 10:25:34 2025] Tainted: [E]=UNSIGNED_MODULE [Tue Sep 9 10:25:34 2025] Hardware name: IBM 8561 T01 703 (LPAR) [Tue Sep 9 10:25:34 2025] Krnl PSW : 0704d00180000000 00007fffe07f5ef2 (remap_pfn_range_internal+0x372/0x420) [Tue Sep 9 10:25:34 2025] R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:1 PM:0 RI:0 EA:3 [Tue Sep 9 10:25:34 2025] Krnl GPRS: 0000000004044400 001c0f000188b024 0000000000000000 001c0f000188b022 [Tue Sep 9 10:25:34 2025] 000078000c458120 000078000a0ca800 00000f000188b022 0000000000000711 [Tue Sep 9 10:25:34 2025] 000003ffa6e05000 00000f000188b024 000003ffa6a05000 0000000004044400 [Tue Sep 9 10:25:34 2025] 000003ffa7aadfa8 00007fffe2c35ea0 001c000000000000 00007f7fe0faf000 [Tue Sep 9 10:25:34 2025] Krnl Code: 00007fffe07f5ee6: 47000700 bc 0,1792 00007fffe07f5eea: af000000 mc 0,0 #00007fffe07f5eee: af000000 mc 0,0 >00007fffe07f5ef2: a7f4ff11 brc 15,00007fffe07f5d14 00007fffe07f5ef6: b904002b lgr %r2,%r11 00007fffe07f5efa: c0e5000918bb brasl %r14,00007fffe0919070 00007fffe07f5f00: a7f4ff39 brc 15,00007fffe07f5d72 00007fffe07f5f04: e320f0c80004 lg %r2,200(%r15) [Tue Sep 9 10:25:34 2025] Call Trace: [Tue Sep 9 10:25:34 2025] [<00007fffe07f5ef2>] remap_pfn_range_internal+0x372/0x420 [Tue Sep 9 10:25:34 2025] [<00007fffe07f5fd4>] remap_pfn_range_complete+0x34/0x70 [Tue Sep 9 10:25:34 2025] [<00007fffe019879e>] remap_oldmem_pfn_range+0x13e/0x1a0 [Tue Sep 9 10:25:34 2025] [<00007fffe0bd3550>] mmap_complete_vmcore+0x520/0x7b0 [Tue Sep 9 10:25:34 2025] [<00007fffe077b05a>] __compat_vma_mmap_prepare+0x3ea/0x550 [Tue Sep 9 10:25:34 2025] [<00007fffe0ba27f0>] pde_mmap+0x160/0x1a0 [Tue Sep 9 10:25:34 2025] [<00007fffe0ba3750>] proc_reg_mmap+0xd0/0x180 [Tue Sep 9 10:25:34 2025] [<00007fffe0859904>] __mmap_new_vma+0x444/0x1290 [Tue Sep 9 10:25:34 2025] [<00007fffe085b0b4>] __mmap_region+0x964/0x1090 [Tue Sep 9 10:25:34 2025] [<00007fffe085dc7e>] mmap_region+0xde/0x250 [Tue Sep 9 10:25:34 2025] [<00007fffe08065fc>] do_mmap+0x80c/0xc30 [Tue Sep 9 10:25:34 2025] [<00007fffe077c708>] vm_mmap_pgoff+0x218/0x370 [Tue Sep 9 10:25:34 2025] [<00007fffe080467e>] ksys_mmap_pgoff+0x2ee/0x400 [Tue Sep 9 10:25:34 2025] [<00007fffe0804a3a>] __s390x_sys_old_mmap+0x15a/0x1d0 [Tue Sep 9 10:25:34 2025] [<00007fffe29f1cd6>] __do_syscall+0x146/0x410 [Tue Sep 9 10:25:34 2025] [<00007fffe2a17e1e>] system_call+0x6e/0x90 [Tue Sep 9 10:25:34 2025] 2 locks held by makedumpfile/563: [Tue Sep 9 10:25:34 2025] #0: 000078000a0caab0 (&mm->mmap_lock){++++}-{3:3}, at: vm_mmap_pgoff+0x16e/0x370 [Tue Sep 9 10:25:34 2025] #1: 00007fffe3864f50 (vmcore_cb_srcu){.+.+}-{0:0}, at: mmap_complete_vmcore+0x20c/0x7b0 [Tue Sep 9 10:25:34 2025] Last Breaking-Event-Address: [Tue Sep 9 10:25:34 2025] [<00007fffe07f5d0e>] remap_pfn_range_internal+0x18e/0x420 [Tue Sep 9 10:25:34 2025] irq event stamp: 19113 [Tue Sep 9 10:25:34 2025] hardirqs last enabled at (19121): [<00007fffe0391910>] __up_console_sem+0xe0/0x120 [Tue Sep 9 10:25:34 2025] hardirqs last disabled at (19128): [<00007fffe03918f2>] __up_console_sem+0xc2/0x120 [Tue Sep 9 10:25:34 2025] softirqs last enabled at (4934): [<00007fffe021cb8e>] handle_softirqs+0x70e/0xed0 [Tue Sep 9 10:25:34 2025] softirqs last disabled at (3919): [<00007fffe021b670>] __irq_exit_rcu+0x2e0/0x380 [Tue Sep 9 10:25:34 2025] ---[ end trace 0000000000000000 ]--- Thanks!