Package: bash
Version: 4.3-11+deb8u1
Severity: normal
Dear Maintainer,
there is a race condition in debians clear_console.c. This results in unexpected
tty switches. The below patch addresses the problem. Please consider merging
this
back in.
Thank you for your time,
Erik
--- a/debian/clear_console.c
+++ b/debian/clear_console.c
@@ -167,7 +167,7 @@
int clear_console(int fd)
{
- int num, tmp_num;
+ int num, tmp_num, ret;
#if defined(__linux__)
struct vt_stat vtstat;
#endif
@@ -209,7 +209,12 @@
exit(1);
}
- if (ioctl(fd, VT_WAITACTIVE, tmp_num))
+ do
+ {
+ ret = ioctl(fd, VT_WAITACTIVE, tmp_num);
+ } while (ret && errno == EINTR);
+
+ if (ret != 0)
{
if (!quiet)
perror("VT_WAITACTIVE");
@@ -224,7 +229,12 @@
exit(1);
}
- if (ioctl(fd, VT_WAITACTIVE, num))
+ do
+ {
+ ret = ioctl(fd, VT_WAITACTIVE, num);
+ } while (ret && errno == EINTR);
+
+ if (ret != 0)
{
if (!quiet)
perror("VT_WAITACTIVE");
-- System Information:
Debian Release: 8.8
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 3.16.0-4-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages bash depends on:
ii base-files 8+deb8u8
ii dash 0.5.7-4+b1
ii debianutils 4.4+b1
ii libc6 2.19-18+deb8u9
ii libncurses5 5.9+20140913-1+b1
ii libtinfo5 5.9+20140913-1+b1
Versions of packages bash recommends:
ii bash-completion 1:2.1-4
Versions of packages bash suggests:
pn bash-doc <none>
-- no debconf information
