[PATCH 4.15 041/146] MIPS: ath25: Check for kzalloc allocation failure

[Greg Kroah-Hartman]

4.15-stable review patch.  If anyone has any objections, please let me know.

--

From: Colin Ian King 

commit 1b22b4b28fd5fbc51855219e3238b3ab81da8466 upstream.

Currently there is no null check on a failed allocation of board_data,
and hence a null pointer dereference will occurr. Fix this by checking
for the out of memory null pointer.

Fixes: a7473717483e ("MIPS: ath25: add board configuration detection")
Signed-off-by: Colin Ian King 
Cc: Ralf Baechle 
Cc: linux-m...@linux-mips.org
Cc:  # 3.19+
Patchwork: https://patchwork.linux-mips.org/patch/18657/
Signed-off-by: James Hogan 
Signed-off-by: Greg Kroah-Hartman 

---
 arch/mips/ath25/board.c |2 ++
 1 file changed, 2 insertions(+)

--- a/arch/mips/ath25/board.c
+++ b/arch/mips/ath25/board.c
@@ -135,6 +135,8 @@ int __init ath25_find_config(phys_addr_t
}
 
board_data = kzalloc(BOARD_CONFIG_BUFSZ, GFP_KERNEL);
+   if (!board_data)
+   goto error;
ath25_board.config = (struct ath25_boarddata *)board_data;
memcpy_fromio(board_data, bcfg, 0x100);
if (broken_boarddata) {

[PATCH 4.15 041/146] MIPS: ath25: Check for kzalloc allocation failure

[Greg Kroah-Hartman]

4.15-stable review patch.  If anyone has any objections, please let me know.

--

From: Colin Ian King 

commit 1b22b4b28fd5fbc51855219e3238b3ab81da8466 upstream.

Currently there is no null check on a failed allocation of board_data,
and hence a null pointer dereference will occurr. Fix this by checking
for the out of memory null pointer.

Fixes: a7473717483e ("MIPS: ath25: add board configuration detection")
Signed-off-by: Colin Ian King 
Cc: Ralf Baechle 
Cc: linux-m...@linux-mips.org
Cc:  # 3.19+
Patchwork: https://patchwork.linux-mips.org/patch/18657/
Signed-off-by: James Hogan 
Signed-off-by: Greg Kroah-Hartman 

---
 arch/mips/ath25/board.c |2 ++
 1 file changed, 2 insertions(+)

--- a/arch/mips/ath25/board.c
+++ b/arch/mips/ath25/board.c
@@ -135,6 +135,8 @@ int __init ath25_find_config(phys_addr_t
}
 
board_data = kzalloc(BOARD_CONFIG_BUFSZ, GFP_KERNEL);
+   if (!board_data)
+   goto error;
ath25_board.config = (struct ath25_boarddata *)board_data;
memcpy_fromio(board_data, bcfg, 0x100);
if (broken_boarddata) {