Messages in this thread Patch in this message | | | Subject | [PATCH] init/main.c: check for null pointer before calling initcall | From | Abderrahmane Benbachir <> | Date | Fri, 27 Oct 2017 12:47:27 -0400 |
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Simple check to prevent kernel panic when initcall does not exit
Signed-off-by: Abderrahmane Benbachir <abderrahmane.benbachir@polymtl.ca> --- init/main.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/init/main.c b/init/main.c index 0ee9c6866ada..220fd2822b61 100644 --- a/init/main.c +++ b/init/main.c @@ -817,6 +817,9 @@ int __init_or_module do_one_initcall(initcall_t fn) int ret; char msgbuf[64]; + if (unlikely(!fn)) + return -EFAULT; + if (initcall_blacklisted(fn)) return -EPERM; -- 2.11.0
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