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| author | Liping Zhang <zlpnobody@gmail.com> | 2017-04-07 15:51:06 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-07-12 13:01:04 (GMT) |
| commit | 3a20c57b4332b8ff46c7317f7c62d9d68a5dc735 (patch) | |
| tree | 8a74b5b40d9caf8851f7699d77e2e404b7c394b8 | |
| parent | 4e84b9c79003fb8d0eb7a82851f48d3ea7843f25 (diff) | |
| download | linux-3a20c57b4332b8ff46c7317f7c62d9d68a5dc735.tar.xz | |
sysctl: don't print negative flag for proc_douintvec
commit 5380e5644afbba9e3d229c36771134976f05c91e upstream.
I saw some very confusing sysctl output on my system:
# cat /proc/sys/net/core/xfrm_aevent_rseqth
-2
# cat /proc/sys/net/core/xfrm_aevent_etime
-10
# cat /proc/sys/net/ipv4/tcp_notsent_lowat
-4294967295
Because we forget to set the *negp flag in proc_douintvec, so it will
become a garbage value.
Since the value related to proc_douintvec is always an unsigned integer,
so we can set *negp to false explictily to fix this issue.
Fixes: e7d316a02f68 ("sysctl: handle error writing UINT_MAX to u32 fields")
Signed-off-by: Liping Zhang <zlpnobody@gmail.com>
Cc: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | kernel/sysctl.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/sysctl.c b/kernel/sysctl.c index c1095cd..e8c1743 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -2149,6 +2149,7 @@ static int do_proc_douintvec_conv(bool *negp, unsigned long *lvalp, *valp = *lvalp; } else { unsigned int val = *valp; + *negp = false; *lvalp = (unsigned long)val; } return 0; |