From: Li zeming <zeming@nfschina.com>
To: James.Bottomley@HansenPartnership.com, deller@gmx.de
Cc: linux-parisc@vger.kernel.org, linux-kernel@vger.kernel.org,
Li zeming <zeming@nfschina.com>
Subject: [PATCH] parisc: Increase the usage check of kmalloc allocated object a
Date: Wed, 14 Sep 2022 14:04:28 +0800 [thread overview]
Message-ID: <20220914060428.4039-1-zeming@nfschina.com> (raw)
In the case of memory allocation failure, no alignment operation is
required.
Signed-off-by: Li zeming <zeming@nfschina.com>
---
drivers/parisc/iosapic.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/parisc/iosapic.c b/drivers/parisc/iosapic.c
index 3a8c98615634..33de438916d3 100644
--- a/drivers/parisc/iosapic.c
+++ b/drivers/parisc/iosapic.c
@@ -229,7 +229,9 @@ static struct irt_entry *iosapic_alloc_irt(int num_entries)
* 4-byte alignment on 32-bit kernels
*/
a = (unsigned long)kmalloc(sizeof(struct irt_entry) * num_entries + 8, GFP_KERNEL);
- a = (a + 7UL) & ~7UL;
+ if (a)
+ a = (a + 7UL) & ~7UL;
+
return (struct irt_entry *)a;
}
--
2.18.2
next reply other threads:[~2022-09-14 6:05 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-14 6:04 Li zeming [this message]
2022-09-14 6:18 ` [PATCH] parisc: Increase the usage check of kmalloc allocated object a Helge Deller
2022-09-14 6:43 ` Rolf Eike Beer
2022-09-14 9:04 ` Helge Deller
2022-09-14 14:25 ` Rolf Eike Beer
2022-09-15 5:44 ` Helge Deller
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