[1/2] btrfs-progs: fix kernel version parsing on some versions past 3.0
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Message ID 20180903101426.14968-1-kilobyte@angband.pl
State New
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Series
  • [1/2] btrfs-progs: fix kernel version parsing on some versions past 3.0
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Commit Message

Adam Borowski Sept. 3, 2018, 10:14 a.m. UTC
The code fails if the third section is missing (like "4.18") or is followed
by anything but "." or "-".  This happens for example if we're not exactly
at a tag and CONFIG_LOCALVERSION_AUTO=n (which results in "4.18.5+").

Signed-off-by: Adam Borowski <kilobyte@angband.pl>
---
 fsfeatures.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

Patch
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diff --git a/fsfeatures.c b/fsfeatures.c
index 7d85d60f..66111bf4 100644
--- a/fsfeatures.c
+++ b/fsfeatures.c
@@ -216,11 +216,8 @@  u32 get_running_kernel_version(void)
 		return (u32)-1;
 	version |= atoi(tmp) << 8;
 	tmp = strtok_r(NULL, ".", &saveptr);
-	if (tmp) {
-		if (!string_is_numerical(tmp))
-			return (u32)-1;
+	if (tmp && string_is_numerical(tmp))
 		version |= atoi(tmp);
-	}
 
 	return version;
 }