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Date: Wed, 12 Nov 2014 10:16:45 +0900 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Alexey Khoroshilov <khoroshilov@...ras.ru>, Jonathan Brassow <jbrassow@...hat.com>, Mike Snitzer <snitzer@...hat.com> Subject: [PATCH 3.10 039/123] dm log userspace: fix memory leak in dm_ulog_tfr_init failure path 3.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Alexey Khoroshilov <khoroshilov@...ras.ru> commit 56ec16cb1e1ce46354de8511eef962a417c32c92 upstream. If cn_add_callback() fails in dm_ulog_tfr_init(), it does not deallocate prealloced memory but calls cn_del_callback(). Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov <khoroshilov@...ras.ru> Reviewed-by: Jonathan Brassow <jbrassow@...hat.com> Signed-off-by: Mike Snitzer <snitzer@...hat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- drivers/md/dm-log-userspace-transfer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/md/dm-log-userspace-transfer.c +++ b/drivers/md/dm-log-userspace-transfer.c @@ -272,7 +272,7 @@ int dm_ulog_tfr_init(void) r = cn_add_callback(&ulog_cn_id, "dmlogusr", cn_ulog_callback); if (r) { - cn_del_callback(&ulog_cn_id); + kfree(prealloced_cn_msg); return r; } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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