diff options
| author | Liping Zhang <zlpnobody@gmail.com> | 2017-04-07 23:51:06 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-07-15 11:57:46 +0200 |
| commit | e8505e6432c2eb7296d9c7724146d1ba1966a040 (patch) | |
| tree | 147d294a04831f129d87ede024fdc4560e36f200 | |
| parent | 2e42225b85ee59e3fea83895256386c1544adfa6 (diff) | |
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 464a7864e4c5..5f3a51614ecf 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -2070,6 +2070,7 @@ 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; |