On Sun, Sep 22, 2019 at 10:25:44PM +0200, Greg KH wrote:
On Sun, Sep 22, 2019 at 02:43:15PM -0400, Sasha Levin wrote:
From: Austin Kim <austindh.kim@xxxxxxxxx>
[ Upstream commit 864b23f0169d5bff677e8443a7a90dfd6b090afc ]
The result of kmalloc() should have been checked ahead of below statement:
pqp = (struct bau_pq_entry *)vp;
Move BUG_ON(!vp) before above statement.
Signed-off-by: Austin Kim <austindh.kim@xxxxxxxxx>
Cc: Dimitri Sivanich <dimitri.sivanich@xxxxxxx>
Cc: Hedi Berriche <hedi.berriche@xxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Mike Travis <mike.travis@xxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Russ Anderson <russ.anderson@xxxxxxx>
Cc: Steve Wahl <steve.wahl@xxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: allison@xxxxxxxxxxx
Cc: andy@xxxxxxxxxxxxx
Cc: armijn@xxxxxxxxxx
Cc: bp@xxxxxxxxx
Cc: dvhart@xxxxxxxxxxxxx
Cc: gregkh@xxxxxxxxxxxxxxxxxxx
Cc: hpa@xxxxxxxxx
Cc: kjlu@xxxxxxx
Cc: platform-driver-x86@xxxxxxxxxxxxxxx
Link: https://lkml.kernel.org/r/20190905232951.GA28779@LGEARND20B15
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
arch/x86/platform/uv/tlb_uv.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/x86/platform/uv/tlb_uv.c b/arch/x86/platform/uv/tlb_uv.c
index 20c389a91b803..5f0a96bf27a1f 100644
--- a/arch/x86/platform/uv/tlb_uv.c
+++ b/arch/x86/platform/uv/tlb_uv.c
@@ -1804,9 +1804,9 @@ static void pq_init(int node, int pnode)
plsize = (DEST_Q_SIZE + 1) * sizeof(struct bau_pq_entry);
vp = kmalloc_node(plsize, GFP_KERNEL, node);
- pqp = (struct bau_pq_entry *)vp;
- BUG_ON(!pqp);
+ BUG_ON(!vp);
+ pqp = (struct bau_pq_entry *)vp;
cp = (char *)pqp + 31;
pqp = (struct bau_pq_entry *)(((unsigned long)cp >> 5) << 5);
How did this even get merged in the first place? I thought a number of
us complained about it.
This isn't any change in code, and the original is just fine, the author
didn't realize how C works :(
Please drop this.
Heh, I've dropped it.
--
Thanks,
Sasha
