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| author | Viresh Kumar <viresh.kumar@linaro.org> | 2021-02-22 10:18:06 +0300 |
|---|---|---|
| committer | Jassi Brar <jaswinder.singh@linaro.org> | 2021-02-22 22:34:27 +0300 |
| commit | 6b50df2b8c208a04d44b8df5b7baaf668ceb8fc3 (patch) | |
| tree | de9a12d880c8ca9b212cdbc007ed88edcf858ef4 /drivers/mailbox | |
| parent | d1e6bc0ca01c0b0b1a2d543223024cf2c8f52fb7 (diff) | |
| download | linux-6b50df2b8c208a04d44b8df5b7baaf668ceb8fc3.tar.xz | |
mailbox: arm_mhuv2: Skip calling kfree() with invalid pointer
It is possible that 'data' passed to kfree() is set to a error value
instead of allocated space. Make sure it doesn't get called with invalid
pointer.
Fixes: 5a6338cce9f4 ("mailbox: arm_mhuv2: Add driver")
Cc: v5.11 <stable@vger.kernel.org> # v5.11
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
Diffstat (limited to 'drivers/mailbox')
| -rw-r--r-- | drivers/mailbox/arm_mhuv2.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/mailbox/arm_mhuv2.c b/drivers/mailbox/arm_mhuv2.c index cdfb1939fabf..d997f8ebfa98 100644 --- a/drivers/mailbox/arm_mhuv2.c +++ b/drivers/mailbox/arm_mhuv2.c @@ -699,7 +699,9 @@ static irqreturn_t mhuv2_receiver_interrupt(int irq, void *arg) ret = IRQ_HANDLED; } - kfree(data); + if (!IS_ERR(data)) + kfree(data); + return ret; } |