lkml.org 
[lkml]   [2008]   [Mar]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
SubjectRe: [BUG] soft lockup detected with ipcs
On Sun, 2 Mar 2008, Jiri Kosina wrote:

> Could you please try what is the output with the attached patch below, so
> that we know which spinlock buggers?

Uhm, and hereby I attach the patch.

diff --git a/ipc/shm.c b/ipc/shm.c
index c47e872..2abfb70 100644
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -615,6 +615,7 @@ static void shm_get_stat(struct ipc_namespace *ns, unsigned long *rss,
*rss += (HPAGE_SIZE/PAGE_SIZE)*mapping->nrpages;
} else {
struct shmem_inode_info *info = SHMEM_I(inode);
+ printk(KERN_DEBUG "info: %p\n", info);
spin_lock(&info->lock);
*rss += inode->i_mapping->nrpages;
*swp += info->swapped;
diff --git a/ipc/util.c b/ipc/util.c
index fd1b50d..5a0d4d2 100644
--- a/ipc/util.c
+++ b/ipc/util.c
@@ -662,6 +662,7 @@ struct kern_ipc_perm *ipc_lock(struct ipc_ids *ids, int id)

up_read(&ids->rw_mutex);

+ printk(KERN_DEBUG "out: %p\n", out);
spin_lock(&out->lock);

/* ipc_rmid() may have already freed the ID while ipc_lock

\
 
 \ /
  Last update: 2008-03-02 22:29    [W:0.417 / U:0.140 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site