[PATCH] IPMI oops fix

7767e126 · Paolo Galtieri <[email protected]> · 2005-12-15 12:34:28 -08:00

While doing some testing I discovered that if the BIOS on a board does not
properly setup the DMI information it leads to a panic in the IPMI code.

The panic is due to dereferencing a pointer which is not initialized.  The
pointer is initialized in port_setup() and/or mem_setup() and used in
init_one_smi() and cleanup_one_si(), however if either port_setup() or
mem_setup() return ENODEV the pointer does not get initialized.

Signed-off-by: Paolo Galtieri <[email protected]>
Acked-by: Corey Minyard <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

Commit: 7767e126ca0f32cd0438455fdd9650f909d2eeb3
Parents: ebbd1bce

Changes

1 files changed · +4 −2

File	Status	Add	Del	Content
drivers/char/ipmi/ipmi_si_intf.c	modified	+4	−2	View file

drivers/char/ipmi/ipmi_si_intf.c

View file

diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c
index 01a1f6b..beea450 100644
--- a/drivers/char/ipmi/ipmi_si_intf.c
+++ b/drivers/char/ipmi/ipmi_si_intf.c
@@ -2399,7 +2399,8 @@ static int init_one_smi(int intf_num, struct smi_info **smi)
 			new_smi->handlers->cleanup(new_smi->si_sm);
 		kfree(new_smi->si_sm);
 	}
-	new_smi->io_cleanup(new_smi);
+	if (new_smi->io_cleanup)
+		new_smi->io_cleanup(new_smi);
 
 	return rv;
 }
@@ -2518,7 +2519,8 @@ static void __exit cleanup_one_si(struct smi_info *to_clean)
 
 	kfree(to_clean->si_sm);
 
-	to_clean->io_cleanup(to_clean);
+	if (to_clean->io_cleanup)
+		to_clean->io_cleanup(to_clean);
 }
 
 static __exit void cleanup_ipmi_si(void)