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bpf: Switch to krealloc_array()

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Let the krealloc_array() copy the original data and
check for a multiplication overflow.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Yonghong Song <yonghong.song@linux.dev>
Link: https://lore.kernel.org/bpf/20240429120005.3539116-1-andriy.shevchenko@linux.intel.com
This commit is contained in:
Andy Shevchenko 2024-04-29 15:00:05 +03:00 committed by Andrii Nakryiko
parent cb01621b6d
commit a3034872cd
1 changed files with 1 additions and 1 deletions
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kernel/bpf/core.c
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@ -850,7 +850,7 @@ int bpf_jit_add_poke_descriptor(struct bpf_prog *prog,
return -EINVAL;
}
tab = krealloc(tab, size * sizeof(*poke), GFP_KERNEL);
tab = krealloc_array(tab, size, sizeof(*poke), GFP_KERNEL);
if (!tab)
return -ENOMEM;