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Mon, 22 Jul 2024 12:40:35 -0400 (EDT) From: Klaus Jensen To: Peter Maydell , qemu-devel@nongnu.org Cc: Hanna Reitz , Klaus Jensen , Stefan Hajnoczi , qemu-block@nongnu.org, Fam Zheng , Keith Busch , =?utf-8?q?Phil?= =?utf-8?q?ippe_Mathieu-Daud=C3=A9?= , Jesper Devantier , Kevin Wolf , Zheyu Ma , qemu-stable@nongnu.org, Klaus Jensen Subject: [PULL 1/4] hw/nvme: fix memory leak in nvme_dsm Date: Mon, 22 Jul 2024 18:40:28 +0200 Message-ID: <20240722164026.61128-7-its@irrelevant.dk> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240722164026.61128-6-its@irrelevant.dk> References: <20240722164026.61128-6-its@irrelevant.dk> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1450; i=k.jensen@samsung.com; h=from:subject; bh=VvCHL/jXjJB40xqUePuYD3s+RJVRAW1gGbIcWezBdXg=; b=owJ4nAFtAZL+kA0DAAoBTeGvMW1PDekByyZiAGaei3s+b5byopuO9jTCOWW2RAss+KEEViH1g ga6pM7c3b1gsokBMwQAAQoAHRYhBFIoM6p14tzmokdmwE3hrzFtTw3pBQJmnot7AAoJEE3hrzFt Tw3pxB8H/jV2O25OAaMv9sIiwpbKDD+hc+DCNKlIAYRKqPWwygDx36Ii9qOP9EXWBWUz11awlYk FQlHc99PLvCIE5LhVBtBkjIyeYKRr5OWapE467GPRrGJwxfttjg4g1dEn+mviUeApPh95Zr6As5 TbIrRtKM8fqJ5QmhT2yQycF7tQBDqDHRkSetxPGhdzndfoTQb6fzfyGh8cxbWPqvFLIBvIF8+xs ZM7dybuZlSjdiN20cbO5FWDhZIIr7rHZNISrCk9PlT7Dh9AR8yRuqV/7pQ2vtzGjhKNkjtV4chs ny61KZMteQlFLwb+a6UwwOUr49Fm2r7e4QgWZioDtlU0/KxMF+7UT6ry X-Developer-Key: i=k.jensen@samsung.com; a=openpgp; fpr=DDCA4D9C9EF931CC3468427263D56FC5E55DA838 Received-SPF: pass client-ip=103.168.172.147; envelope-from=its@irrelevant.dk; helo=fout4-smtp.messagingengine.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Zheyu Ma The allocated memory to hold LBA ranges leaks in the nvme_dsm function. This happens because the allocated memory for iocb->range is not freed in all error handling paths. Fix this by adding a free to ensure that the allocated memory is properly freed. ASAN log: ==3075137==ERROR: LeakSanitizer: detected memory leaks Direct leak of 480 byte(s) in 6 object(s) allocated from: #0 0x55f1f8a0eddd in malloc llvm/compiler-rt/lib/asan/asan_malloc_linux.cpp:129:3 #1 0x7f531e0f6738 in g_malloc (/lib/x86_64-linux-gnu/libglib-2.0.so.0+0x5e738) #2 0x55f1faf1f091 in blk_aio_get block/block-backend.c:2583:12 #3 0x55f1f945c74b in nvme_dsm hw/nvme/ctrl.c:2609:30 #4 0x55f1f945831b in nvme_io_cmd hw/nvme/ctrl.c:4470:16 #5 0x55f1f94561b7 in nvme_process_sq hw/nvme/ctrl.c:7039:29 Cc: qemu-stable@nongnu.org Fixes: d7d1474fd85d ("hw/nvme: reimplement dsm to allow cancellation") Signed-off-by: Zheyu Ma Reviewed-by: Klaus Jensen Signed-off-by: Klaus Jensen --- hw/nvme/ctrl.c | 1 + 1 file changed, 1 insertion(+) diff --git a/hw/nvme/ctrl.c b/hw/nvme/ctrl.c index 5b1b0cabcfc3..f7b4e4627dd2 100644 --- a/hw/nvme/ctrl.c +++ b/hw/nvme/ctrl.c @@ -2591,6 +2591,7 @@ next: done: iocb->aiocb = NULL; iocb->common.cb(iocb->common.opaque, iocb->ret); + g_free(iocb->range); qemu_aio_unref(iocb); }