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ocfs2/cluster: dereferencing before checking in nst_seq_show()

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In the original code, we dereferenced "nst" before checking that it was
non-NULL.  I moved the check forward and pulled the code in an indent
level.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
This commit is contained in:
Dan Carpenter
2011-01-03 09:00:20 +03:00
committed by Joel Becker
parent e70d84501b
commit cc548166b2
1 changed files with 24 additions and 23 deletions
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5
fs/ocfs2/cluster/netdebug.c
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@@ -133,13 +133,14 @@ static int nst_seq_show(struct seq_file *seq, void *v)
spin_lock(&o2net_debug_lock); spin_lock(&o2net_debug_lock);
nst = next_nst(dummy_nst); nst = next_nst(dummy_nst);
if (!nst)
goto out;
now = ktime_get(); now = ktime_get();
sock = ktime_to_us(ktime_sub(now, nst->st_sock_time)); sock = ktime_to_us(ktime_sub(now, nst->st_sock_time));
send = ktime_to_us(ktime_sub(now, nst->st_send_time)); send = ktime_to_us(ktime_sub(now, nst->st_send_time));
status = ktime_to_us(ktime_sub(now, nst->st_status_time)); status = ktime_to_us(ktime_sub(now, nst->st_status_time));
if (nst != NULL) {
/* get_task_comm isn't exported. oh well. */ /* get_task_comm isn't exported. oh well. */
seq_printf(seq, "%p:\n" seq_printf(seq, "%p:\n"
" pid: %lu\n" " pid: %lu\n"
@@ -161,8 +162,8 @@ static int nst_seq_show(struct seq_file *seq, void *v)
(long long)sock, (long long)sock,
(long long)send, (long long)send,
(long long)status); (long long)status);
}
out:
spin_unlock(&o2net_debug_lock); spin_unlock(&o2net_debug_lock);
return 0; return 0;