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| author | Li zeming <zeming@nfschina.com> | 2022-12-19 10:18:16 +0800 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2024-03-03 22:20:28 +1100 |
| commit | 69b0194ccec033c208b071e019032c1919c2822d (patch) | |
| tree | 14fba095c0f54995f1506b338b4568bf532402aa /arch/powerpc | |
| parent | cda9c0d556283e2d4adaa9960b2dc19b16156bae (diff) | |
| download | linux-stable-69b0194ccec033c208b071e019032c1919c2822d.tar.gz linux-stable-69b0194ccec033c208b071e019032c1919c2822d.tar.bz2 linux-stable-69b0194ccec033c208b071e019032c1919c2822d.zip | |
powerpc/boot: Handle allocation failure in simple_realloc()
simple_malloc() will return NULL when there is not enough memory left.
Check pointer 'new' before using it to copy the old data.
Signed-off-by: Li zeming <zeming@nfschina.com>
[mpe: Reword subject, use change log from Christophe]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20221219021816.3012-1-zeming@nfschina.com
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/boot/simple_alloc.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/powerpc/boot/simple_alloc.c b/arch/powerpc/boot/simple_alloc.c index 267d6524caac..db9aaa5face3 100644 --- a/arch/powerpc/boot/simple_alloc.c +++ b/arch/powerpc/boot/simple_alloc.c @@ -112,7 +112,9 @@ static void *simple_realloc(void *ptr, unsigned long size) return ptr; new = simple_malloc(size); - memcpy(new, ptr, p->size); + if (new) + memcpy(new, ptr, p->size); + simple_free(ptr); return new; } |