5.15-stable review patch. If anyone has any objections, please let me know.
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From: Pablo Martin-Gomez pmartin-gomez@freebox.fr
[ Upstream commit 6463cbe08b0cbf9bba8763306764f5fd643023e1 ]
Memory allocated for the ECC engine conf is not released during spinand cleanup. Below kmemleak trace is seen for this memory leak:
unreferenced object 0xffffff80064f00e0 (size 8): comm "swapper/0", pid 1, jiffies 4294937458 hex dump (first 8 bytes): 00 00 00 00 00 00 00 00 ........ backtrace (crc 0): kmemleak_alloc+0x30/0x40 __kmalloc_cache_noprof+0x208/0x3c0 spinand_ondie_ecc_init_ctx+0x114/0x200 nand_ecc_init_ctx+0x70/0xa8 nanddev_ecc_engine_init+0xec/0x27c spinand_probe+0xa2c/0x1620 spi_mem_probe+0x130/0x21c spi_probe+0xf0/0x170 really_probe+0x17c/0x6e8 __driver_probe_device+0x17c/0x21c driver_probe_device+0x58/0x180 __device_attach_driver+0x15c/0x1f8 bus_for_each_drv+0xec/0x150 __device_attach+0x188/0x24c device_initial_probe+0x10/0x20 bus_probe_device+0x11c/0x160
Fix the leak by calling nanddev_ecc_engine_cleanup() inside spinand_cleanup().
Signed-off-by: Pablo Martin-Gomez pmartin-gomez@freebox.fr Signed-off-by: Miquel Raynal miquel.raynal@bootlin.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/mtd/nand/spi/core.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/mtd/nand/spi/core.c b/drivers/mtd/nand/spi/core.c index 2c8685f1f2fa7..80d0112d18fa6 100644 --- a/drivers/mtd/nand/spi/core.c +++ b/drivers/mtd/nand/spi/core.c @@ -1271,6 +1271,7 @@ static void spinand_cleanup(struct spinand_device *spinand) { struct nand_device *nand = spinand_to_nand(spinand);
+ nanddev_ecc_engine_cleanup(nand); nanddev_cleanup(nand); spinand_manufacturer_cleanup(spinand); kfree(spinand->databuf);