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| author | David Barksdale <amatus@ocgnet.org> | 2007-01-30 14:36:25 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-01-30 16:01:36 -0800 |
| commit | 41c57a87183a7c458d86f78966d69d4bf18ea0b7 (patch) | |
| tree | 8efc83537ecc63a49cd823133f10f003b1efa4ee | |
| parent | fa8609da993b04dc2dd762173a6d0ab1a192e256 (diff) | |
| download | lwn-41c57a87183a7c458d86f78966d69d4bf18ea0b7.tar.gz lwn-41c57a87183a7c458d86f78966d69d4bf18ea0b7.zip | |
[PATCH] IPMI: fix timeout list handling
Fix a dangling pointer bug in ipmi_timeout_handler. A list of timedout
messages is not re-initialized before reuse, causing the head of the list
to point to freed memory.
Signed-off-by: David Barksdale <amatus@ocgnet.org>
Signed-off-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | drivers/char/ipmi/ipmi_msghandler.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c index 4e4691a53890..53582b53da95 100644 --- a/drivers/char/ipmi/ipmi_msghandler.c +++ b/drivers/char/ipmi/ipmi_msghandler.c @@ -3649,8 +3649,6 @@ static void ipmi_timeout_handler(long timeout_period) unsigned long flags; int i; - INIT_LIST_HEAD(&timeouts); - rcu_read_lock(); list_for_each_entry_rcu(intf, &ipmi_interfaces, link) { /* See if any waiting messages need to be processed. */ @@ -3671,6 +3669,7 @@ static void ipmi_timeout_handler(long timeout_period) /* Go through the seq table and find any messages that have timed out, putting them in the timeouts list. */ + INIT_LIST_HEAD(&timeouts); spin_lock_irqsave(&intf->seq_lock, flags); for (i = 0; i < IPMI_IPMB_NUM_SEQ; i++) check_msg_timeout(intf, &(intf->seq_table[i]), |