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Miller" , Dave Hansen , David Hildenbrand , Dmitry Vyukov , Ilias Apalodimas , Ingo Molnar , Jan Kara , Johannes Weiner , "Liam R. Howlett" , Lorenzo Stoakes , Madhavan Srinivasan , Marco Elver , Marek Szyprowski , Masami Hiramatsu , Michael Ellerman , Michal Hocko , Mike Rapoport , Nicholas Piggin , "H. Peter Anvin" , Rob Herring , Robin Murphy , Saravana Kannan , Suren Baghdasaryan , Thomas Gleixner , Vlastimil Babka , Will Deacon , Zi Yan , devicetree@vger.kernel.org, iommu@lists.linux.dev, kasan-dev@googlegroups.com, linux-arm-kernel@lists.infradead.org, linux-efi@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-trace-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org, x86@kernel.org Subject: [PATCH v2 1/9] memblock: reserve_mem: fix end caclulation in reserve_mem_release_by_name() Date: Mon, 23 Mar 2026 09:48:28 +0200 Message-ID: <20260323074836.3653702-2-rppt@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260323074836.3653702-1-rppt@kernel.org> References: <20260323074836.3653702-1-rppt@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Stat-Signature: si5qhk5rk3y3dh8fnpzeoznsqtrdwfdh X-Rspam-User: X-Rspamd-Queue-Id: B3B35120002 X-Rspamd-Server: rspam12 X-HE-Tag: 1774252142-925039 X-HE-Meta: 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 084JBU81 faxB2XJ8qx8GiunH0kCdUW9RrFM1eT3PnPiaoGq3RHSnfnXLMQ+nFoPHVoxfycBucq0kJE+iJeJLDJxgjce0kKBof4z9eN5Zi81MMCkDztT/mX7cVhZ6MlaYLVXWyR4ah/kDhMO519gIjg4AgZ9fEPsRFzwi7otNoCNqv7PnrnR2ZeCTrji6GBDoEO3JbDYf23GnNNBeAK5N0GbncWhY6t38/SrouXSbVIPQC8+PpQkl22LCEdV1RM9aexAXyJ7SjQrwFpXWoSY/fBKyyKDYbj+3aLw== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: From: "Mike Rapoport (Microsoft)" free_reserved_area() expects end parameter to point to the first address after the area, but reserve_mem_release_by_name() passes it the last address inside the area. Remove subtraction of one in calculation of the area end. Fixes: 74e2498ccf7b ("mm/memblock: Add reserved memory release function") Signed-off-by: Mike Rapoport (Microsoft) --- mm/memblock.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/memblock.c b/mm/memblock.c index b3ddfdec7a80..d4a02f1750e9 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -2434,7 +2434,7 @@ int reserve_mem_release_by_name(const char *name) return 0; start = phys_to_virt(map->start); - end = start + map->size - 1; + end = start + map->size; snprintf(buf, sizeof(buf), "reserve_mem:%s", name); free_reserved_area(start, end, 0, buf); map->size = 0; -- 2.53.0