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uprobes: simplify error handling for alloc_uprobe()

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Return -ENOMEM instead of NULL, which makes caller's error handling just
a touch simpler.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: "Masami Hiramatsu (Google)" <mhiramat@kernel.org>
Reviewed-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20240801132719.GA8788@redhat.com
This commit is contained in:
Andrii Nakryiko 2024-08-01 15:27:19 +02:00 committed by Peter Zijlstra
parent 300b05621a
commit 7c2bae2d9c
1 changed files with 1 additions and 3 deletions
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4
kernel/events/uprobes.c
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@ -725,7 +725,7 @@ static struct uprobe *alloc_uprobe(struct inode *inode, loff_t offset,
uprobe = kzalloc(sizeof(struct uprobe), GFP_KERNEL);
if (!uprobe)
return NULL;
return ERR_PTR(-ENOMEM);
uprobe->inode = inode;
uprobe->offset = offset;
@ -1167,8 +1167,6 @@ static int __uprobe_register(struct inode *inode, loff_t offset,
retry:
uprobe = alloc_uprobe(inode, offset, ref_ctr_offset);
if (!uprobe)
return -ENOMEM;
if (IS_ERR(uprobe))
return PTR_ERR(uprobe);