From bc146d23d1358af43f03793c3ad8c9f16bbcffcb Mon Sep 17 00:00:00 2001 From: Maxime Bizon Date: Thu, 16 Jul 2009 06:32:52 +0000 Subject: ide: fix memory leak when flush command is issued I'm using ide on 2.6.30.1 with xfs filesystem. I noticed a kernel memory leak after writing lots of data, the kmalloc-96 slab cache keeps growing. It seems the struct ide_cmd kmalloced by idedisk_prepare_flush is never kfreed. Commit a09485df9cda49fbde2766c86eb18a9cae585162 ("ide: move request type specific code from ide_end_drive_cmd() to callers (v3)") and f505d49ffd25ed062e76ffd17568d3937fcd338c ("ide: fix barriers support") cause this regression, cmd->rq must now be set for ide_complete_cmd to honor the IDE_TFLAG_DYN flag. Signed-off-by: Maxime Bizon Acked-by: Bartlomiej Zolnierkiewicz Signed-off-by: David S. Miller --- drivers/ide/ide-disk.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c index 695181120cd..7f878017b73 100644 --- a/drivers/ide/ide-disk.c +++ b/drivers/ide/ide-disk.c @@ -455,6 +455,7 @@ static void idedisk_prepare_flush(struct request_queue *q, struct request *rq) rq->cmd_type = REQ_TYPE_ATA_TASKFILE; rq->special = cmd; + cmd->rq = rq; } ide_devset_get(multcount, mult_count); -- cgit v1.2.3 From 2fc2111c2729462b99b6e37f39a48917054776f5 Mon Sep 17 00:00:00 2001 From: Michael Buesch Date: Sun, 19 Jul 2009 09:15:19 +0000 Subject: ide-tape: Don't leak kernel stack information Don't leak kernel stack information through uninitialized structure members. Signed-off-by: Michael Buesch Acked-by: Borislav Petkov . Signed-off-by: David S. Miller --- drivers/ide/ide-tape.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c index 013dc595fab..bc5fb12b913 100644 --- a/drivers/ide/ide-tape.c +++ b/drivers/ide/ide-tape.c @@ -1064,6 +1064,7 @@ static int idetape_blkdev_ioctl(ide_drive_t *drive, unsigned int cmd, tape->best_dsc_rw_freq = config.dsc_rw_frequency; break; case 0x0350: + memset(&config, 0, sizeof(config)); config.dsc_rw_frequency = (int) tape->best_dsc_rw_freq; config.nr_stages = 1; if (copy_to_user(argp, &config, sizeof(config))) -- cgit v1.2.3