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| author | Alexey Khoroshilov <khoroshilov@ispras.ru> | 2022-12-23 17:40:17 +0300 |
|---|---|---|
| committer | Geert Uytterhoeven <geert+renesas@glider.be> | 2023-01-12 17:18:48 +0100 |
| commit | fbfd614aeaa2853c2c575299dfe2458db8eff67e (patch) | |
| tree | 1ef019cb46ddecc57af618c973614870d93e1691 /drivers/clk/renesas/renesas-cpg-mssr.c | |
| parent | a278d0c92be9d90307114b05c3edb1e7354d8412 (diff) | |
| download | linux-stable-fbfd614aeaa2853c2c575299dfe2458db8eff67e.tar.gz linux-stable-fbfd614aeaa2853c2c575299dfe2458db8eff67e.tar.bz2 linux-stable-fbfd614aeaa2853c2c575299dfe2458db8eff67e.zip | |
clk: renesas: cpg-mssr: Fix use after free if cpg_mssr_common_init() failed
If cpg_mssr_common_init() fails after assigning priv to global variable
cpg_mssr_priv, it deallocates priv, but cpg_mssr_priv keeps dangling
pointer that potentially can be used later.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Fixes: 1f7db7bbf031 ("clk: renesas: cpg-mssr: Add early clock support")
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/1671806417-32623-1-git-send-email-khoroshilov@ispras.ru
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Diffstat (limited to 'drivers/clk/renesas/renesas-cpg-mssr.c')
| -rw-r--r-- | drivers/clk/renesas/renesas-cpg-mssr.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/clk/renesas/renesas-cpg-mssr.c b/drivers/clk/renesas/renesas-cpg-mssr.c index 1a0cdf001b2f..5dce9779324d 100644 --- a/drivers/clk/renesas/renesas-cpg-mssr.c +++ b/drivers/clk/renesas/renesas-cpg-mssr.c @@ -989,7 +989,6 @@ static int __init cpg_mssr_common_init(struct device *dev, goto out_err; } - cpg_mssr_priv = priv; priv->num_core_clks = info->num_total_core_clks; priv->num_mod_clks = info->num_hw_mod_clks; priv->last_dt_core_clk = info->last_dt_core_clk; @@ -1019,6 +1018,8 @@ static int __init cpg_mssr_common_init(struct device *dev, if (error) goto out_err; + cpg_mssr_priv = priv; + return 0; out_err: |