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| author | Zhenzhong Duan <zhenzhong.duan@oracle.com> | 2012-03-28 14:42:47 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-03-28 17:14:36 -0700 |
| commit | eaa3be6add6f327ab0a633e4fee8e6f2cc8c8a4c (patch) | |
| tree | 033e1ac064eb855369246404dd1603b41eb64d27 /kernel/kexec.c | |
| parent | d034cfab4f7b9e768c5c1caaa56c5bd4805d2b92 (diff) | |
| download | lwn-eaa3be6add6f327ab0a633e4fee8e6f2cc8c8a4c.tar.gz lwn-eaa3be6add6f327ab0a633e4fee8e6f2cc8c8a4c.zip | |
kexec: add further check to crashkernel
When using crashkernel=2M-256M, the kernel doesn't give any warning. This
is misleading sometimes.
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@oracle.com>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/kexec.c')
| -rw-r--r-- | kernel/kexec.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/kexec.c b/kernel/kexec.c index 769e347c5196..3288c9b29bae 100644 --- a/kernel/kexec.c +++ b/kernel/kexec.c @@ -1359,6 +1359,10 @@ static int __init parse_crashkernel_simple(char *cmdline, if (*cur == '@') *crash_base = memparse(cur+1, &cur); + else if (*cur != ' ' && *cur != '\0') { + pr_warning("crashkernel: unrecognized char\n"); + return -EINVAL; + } return 0; } |