| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.8 200/232] s390/test_unwind: fix possible memleak in test_unwind() | Date | Thu, 20 Aug 2020 11:20:51 +0200 |
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From: Wang Hai <wanghai38@huawei.com>
[ Upstream commit 75d3e7f4769d276a056efa1cc7f08de571fc9b4b ]
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> Acked-by: Ilya Leoshkevich <iii@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Sasha Levin <sashal@kernel.org> --- 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 32b7a30b2485d..b0b12b46bc572 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); -- 2.25.1
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