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x86/platform/uv: Fix missing checks of kcalloc() return values

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Handle potential errors returned from kcalloc().

 [ bp: rewrite commit message. ]

Signed-off-by: Kangjie Lu <[email protected]>
Signed-off-by: Borislav Petkov <[email protected]>
Cc: Andrew Banman <[email protected]>
Cc: Andy Shevchenko <[email protected]>
Cc: Colin Ian King <[email protected]>
Cc: Darren Hart <[email protected]>
Cc: "Gustavo A. R. Silva" <[email protected]>
Cc: "H. Peter Anvin" <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Kees Cook <[email protected]>
Cc: Mike Travis <[email protected]>
Cc: Nicolai Stange <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: Thomas Gleixner <[email protected]>
Cc: Varsha Rao <[email protected]>
Cc: x86-ml <[email protected]>
Link: https://lkml.kernel.org/r/[email protected]
This commit is contained in:
Kangjie Lu 2019-03-25 15:29:22 -05:00 • committed by Borislav Petkov
commit 766460852c
1 changed files with 6 additions and 1 deletions
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7
arch/x86/platform/uv/tlb_uv.c
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@ -2133,14 +2133,19 @@ static int __init summarize_uvhub_sockets(int nuvhubs,
*/
static int __init init_per_cpu(int nuvhubs, int base_part_pnode)
{
unsigned char *uvhub_mask;
struct uvhub_desc *uvhub_descs;
unsigned char *uvhub_mask = NULL;
if (is_uv3_hub() || is_uv2_hub() || is_uv1_hub())
timeout_us = calculate_destination_timeout();
uvhub_descs = kcalloc(nuvhubs, sizeof(struct uvhub_desc), GFP_KERNEL);
if (!uvhub_descs)
goto fail;
uvhub_mask = kzalloc((nuvhubs+7)/8, GFP_KERNEL);
if (!uvhub_mask)
goto fail;
if (get_cpu_topology(base_part_pnode, uvhub_descs, uvhub_mask))
goto fail;