Package: nuttcp
Version: 6.1.2-4
Severity: important
Tags: upstream
Dear Maintainer,
If nuttcp (server) is run under the docker debian image where
/proc/sys/net/ipv4/tcp_adv_win_scale does not exist, it crashes.
The last lines of strace are shown below:
getsockopt(6, SOL_SOCKET, SO_RCVBUF, [374400], [4]) = 0
open("/proc/sys/net/ipv4/tcp_adv_win_scale", O_RDONLY) = -1 ENOENT (No such
file or directory)
--- SIGSEGV (Segmentation fault) @ 0 (0) ---
+++ killed by SIGSEGV (core dumped) +++
Segmentation fault (core dumped)
A fix is attached.
-- System Information:
Debian Release: jessie/sid
APT prefers testing
APT policy: (500, 'testing'), (500, 'oldstable'), (50, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 3.13-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages nuttcp depends on:
ii libc6 2.18-4
nuttcp recommends no packages.
nuttcp suggests no packages.
-- no debconf information
*** /tmp/patch.txt
diff --git a/nuttcp-6.1.2.c b/nuttcp-6.1.2.c
index dfadfc8..cd911a9 100644
--- a/nuttcp-6.1.2.c
+++ b/nuttcp-6.1.2.c
@@ -3750,8 +3750,8 @@ doit:
rcvwinval *= 2;
if ((adv_ws = fopen(TCP_ADV_WIN_SCALE, "r"))) {
fscanf(adv_ws, "%d", &winadjust);
+ fclose(adv_ws);
}
- fclose(adv_ws);
if (winadjust < 0) {
--
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