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| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2008-10-30 14:26:45 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-10-30 14:26:45 +0000 |
| commit | 05cd2544f4b64d9a9eca0d170191867495e01feb (patch) | |
| tree | 10146fb79bba464bac6f620d03b8cd50285065b7 /kernel/tracepoint.c | |
| parent | 27f680adc65ca08bf72ed85d3a48d1ee70f77c7a (diff) | |
| parent | a0601c8944dc08c2d349c24bd9c0b09c406229fc (diff) | |
| download | kernel-crypto-05cd2544f4b64d9a9eca0d170191867495e01feb.tar.gz kernel-crypto-05cd2544f4b64d9a9eca0d170191867495e01feb.tar.xz kernel-crypto-05cd2544f4b64d9a9eca0d170191867495e01feb.zip | |
Merge branch 'fix' of git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa-linux-2.6
Diffstat (limited to 'kernel/tracepoint.c')
| -rw-r--r-- | kernel/tracepoint.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/kernel/tracepoint.c b/kernel/tracepoint.c index f2b7c28a470..af8c8566488 100644 --- a/kernel/tracepoint.c +++ b/kernel/tracepoint.c @@ -131,6 +131,9 @@ tracepoint_entry_remove_probe(struct tracepoint_entry *entry, void *probe) old = entry->funcs; + if (!old) + return NULL; + debug_print_probes(entry); /* (N -> M), (N > 1, M >= 0) probes */ for (nr_probes = 0; old[nr_probes]; nr_probes++) { @@ -388,6 +391,11 @@ int tracepoint_probe_unregister(const char *name, void *probe) if (entry->rcu_pending) rcu_barrier_sched(); old = tracepoint_entry_remove_probe(entry, probe); + if (!old) { + printk(KERN_WARNING "Warning: Trying to unregister a probe" + "that doesn't exist\n"); + goto end; + } mutex_unlock(&tracepoints_mutex); tracepoint_update_probes(); /* may update entry */ mutex_lock(&tracepoints_mutex); |