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Subject: media: c8sectpfe: fix double free in configure_channels() Author: Dan Carpenter <[email protected]> Date: Wed Dec 8 08:35:44 2021 +0100 The configure_channels() function has a double free because configure_memdma_and_inputblock() calls free_input_block() and then it's called again in the error handling code. Link: https://lore.kernel.org/linux-media/20211208073544.GA22020@kili Fixes: c5f5d0f99794 ("[media] c8sectpfe: STiH407/10 Linux DVB demux support") Signed-off-by: Dan Carpenter <[email protected]> Reviewed-by: Patrice Chotard <[email protected]> Signed-off-by: Mauro Carvalho Chehab <[email protected]> drivers/media/platform/sti/c8sectpfe/c8sectpfe-core.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) --- diff --git a/drivers/media/platform/sti/c8sectpfe/c8sectpfe-core.c b/drivers/media/platform/sti/c8sectpfe/c8sectpfe-core.c index e1f520903248..7bb1384e4bad 100644 --- a/drivers/media/platform/sti/c8sectpfe/c8sectpfe-core.c +++ b/drivers/media/platform/sti/c8sectpfe/c8sectpfe-core.c @@ -925,7 +925,6 @@ static int c8sectpfe_remove(struct platform_device *pdev) static int configure_channels(struct c8sectpfei *fei) { int index = 0, ret; - struct channel_info *tsin; struct device_node *child, *np = fei->dev->of_node; /* iterate round each tsin and configure memdma descriptor and IB hw */ @@ -943,10 +942,9 @@ static int configure_channels(struct c8sectpfei *fei) return 0; err_unmap: - for (index = 0; index < fei->tsin_count; index++) { - tsin = fei->channel_data[index]; - free_input_block(fei, tsin); - } + while (--index >= 0) + free_input_block(fei, fei->channel_data[index]); + return ret; } _______________________________________________ linuxtv-commits mailing list [email protected] https://www.linuxtv.org/cgi-bin/mailman/listinfo/linuxtv-commits
