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SubjectRe: [PATCH] s390/test_unwind: fix possible memleak in test_unwind()
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On Thu, 2020-07-30 at 14:36 +0800, Wang Hai wrote:
> test_unwind() misses to call kfree(bt) in an error path.
> Add the missed function call to fix it.
>
> Fixes: 0610154650f1 ("s390/test_unwind: print verbose unwinding
> results")
> Reported-by: Hulk Robot <hulkci@huawei.com>
> Signed-off-by: Wang Hai <wanghai38@huawei.com>
> ---
> arch/s390/lib/test_unwind.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/s390/lib/test_unwind.c
> b/arch/s390/lib/test_unwind.c
> index 32b7a30b2485..b0b12b46bc57 100644
> --- a/arch/s390/lib/test_unwind.c
> +++ b/arch/s390/lib/test_unwind.c
> @@ -63,6 +63,7 @@ static noinline int test_unwind(struct task_struct
> *task, struct pt_regs *regs,
> break;
> if (state.reliable && !addr) {
> pr_err("unwind state reliable but addr is
> 0\n");
> + kfree(bt);
> return -EINVAL;
> }
> sprint_symbol(sym, addr);

Looks good to me, thanks!

Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>

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