From: Oleg Nesterov <oleg@redhat.com>
To: Ingo Molnar <mingo@elte.hu>,
Peter Zijlstra <peterz@infradead.org>,
Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>,
Anton Arapov <anton@redhat.com>,
Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
linux-kernel@vger.kernel.org
Subject: [PATCH 2/7] uprobes: Don't return success if alloc_uprobe() fails
Date: Sun, 30 Sep 2012 21:42:01 +0200 [thread overview]
Message-ID: <20120930194201.GA11319@redhat.com> (raw)
In-Reply-To: <20120930194119.GA11278@redhat.com>
If alloc_uprobe() fails uprobe_register() should return ENOMEM, not 0.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
---
kernel/events/uprobes.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
index a741ba7..3ec114c 100644
--- a/kernel/events/uprobes.c
+++ b/kernel/events/uprobes.c
@@ -813,7 +813,9 @@ int uprobe_register(struct inode *inode, loff_t offset, struct uprobe_consumer *
mutex_lock(uprobes_hash(inode));
uprobe = alloc_uprobe(inode, offset);
- if (uprobe && !consumer_add(uprobe, uc)) {
+ if (!uprobe) {
+ ret = -ENOMEM;
+ } else if (!consumer_add(uprobe, uc)) {
ret = __uprobe_register(uprobe);
if (ret) {
uprobe->consumers = NULL;
--
1.5.5.1
next prev parent reply other threads:[~2012-09-30 19:41 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-30 19:41 [PATCH 0/7] uprobes: register/unregister bugfixes Oleg Nesterov
2012-09-30 19:41 ` [PATCH 1/7] uprobes/x86: Only rep+nop can be emulated correctly Oleg Nesterov
2012-10-06 7:20 ` Srikar Dronamraju
2012-09-30 19:42 ` Oleg Nesterov [this message]
2012-10-06 7:25 ` [PATCH 2/7] uprobes: Don't return success if alloc_uprobe() fails Srikar Dronamraju
2012-09-30 19:42 ` [PATCH 3/7] uprobes: Do not delete uprobe if uprobe_unregister() fails Oleg Nesterov
2012-10-06 8:48 ` Srikar Dronamraju
2012-09-30 19:42 ` [PATCH 4/7] uprobes: Fix handle_swbp() vs unregister() + register() race Oleg Nesterov
2012-10-02 18:42 ` Oleg Nesterov
2012-10-06 9:33 ` Srikar Dronamraju
2012-10-06 17:25 ` Oleg Nesterov
2012-10-06 17:37 ` Srikar Dronamraju
2012-10-06 18:53 ` Oleg Nesterov
2012-10-07 7:12 ` Srikar Dronamraju
2012-09-30 19:42 ` [PATCH 5/7] uprobes: Introduce uprobe_copy_insn() Oleg Nesterov
2012-10-06 9:45 ` Srikar Dronamraju
2012-10-06 17:10 ` Oleg Nesterov
2012-10-06 17:38 ` Srikar Dronamraju
2012-10-06 18:59 ` Oleg Nesterov
2012-10-07 7:14 ` Srikar Dronamraju
2012-09-30 19:42 ` [PATCH 6/7] uprobes: Fix uprobe_copy_insn() race with itself Oleg Nesterov
2012-10-06 9:52 ` Srikar Dronamraju
2012-09-30 19:42 ` [PATCH 7/7] uprobes: Fix the racy uprobe->flags manipulation Oleg Nesterov
2012-10-04 8:57 ` Anton Arapov
2012-10-06 9:54 ` Srikar Dronamraju
2012-09-30 19:44 ` [PATCH 0/7] uprobes: register/unregister bugfixes Oleg Nesterov
2012-10-01 12:55 ` Srikar Dronamraju
2012-10-01 14:03 ` Oleg Nesterov
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