Package: incron
Version: 0.5.12-1+deb10u1
Severity: grave
Justification: renders package unusable
Dear Maintainer,
Incrond crashes with SIGSEGV when monitoring IN_CREATE event in a directory and
a new directory is created inside the monitored dir.
How to reproduce :
su -
apt-get install incrond
echo root >/etc/incron.allow
echo '/home IN_CREATE,recursive=false /root/scripts/first-try $@ $#' |
incrontab -u root -
touch /home/foo-$RANDOM # this does not crash incrond
mkdir /home/foo-$RANDOM # this crashes incrond
Here is an strace output on the incrond daemon :
poll([{fd=4, events=POLLIN}, {fd=6, events=POLLIN}, {fd=8, events=POLLIN}],
3, -1) = ? ERESTART_RESTARTBLOCK (Interrupted by signal)
--- SIGCONT {si_signo=SIGCONT, si_code=SI_USER, si_pid=18788, si_uid=0} ---
restart_syscall(<... resuming interrupted poll ...>) = 1
read(8, "\1\0\0\0\0\1\0@\0\0\0\0\20\0\0\0foo-5175\0\0\0\0\0\0\0\0", 32768) =
32
stat("/home", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
getpid() = 20473
sendto(3, "<78>Nov 7 17:15:47 incrond[20473]: PATH (/home) FILE (foo-5175)
EVENT (IN_CREATE,IN_ISDIR)", 91, MSG_NOSIGNAL, NULL, 0) = 91
inotify_rm_watch(8, 1) = 0
nanosleep({tv_sec=1, tv_nsec=0}, 0x7ffe411006b0) = 0
openat(AT_FDCWD, "/var/spool/incron/root", O_RDONLY) = 7
fstat(7, {st_mode=S_IFREG|0600, st_size=62, ...}) = 0
read(7, "/home\tIN_CREATE,recursive=false\t/root/scripts/first-try $@ $#\n",
4096) = 62
read(7, "", 4096) = 0
close(7) = 0
stat("/home", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
inotify_add_watch(8, "/home", IN_CREATE) = 2
mmap(NULL, 135168, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7f38a9f00000
--- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x7f38aa9ec000}
---
+++ killed by SIGSEGV +++
I'm not completely sure this is the same as #947425 . Sorry if this is the case.
-- System Information:
Debian Release: 10.6
APT prefers stable
APT policy: (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 4.19.0-12-amd64 (SMP w/2 CPU cores)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8),
LANGUAGE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages incron depends on:
ii adduser 3.118
ii init-system-helpers 1.56+nmu1
ii libc6 2.28-10
ii libgcc1 1:8.3.0-6
ii libstdc++6 8.3.0-6
ii lsb-base 10.2019051400
incron recommends no packages.
incron suggests no packages.
-- Configuration Files:
/etc/incron.allow [Errno 13] Permission non accordée: '/etc/incron.allow'
/etc/incron.deny [Errno 13] Permission non accordée: '/etc/incron.deny'
-- no debconf information
