Bug#807010: xl2tpd freezes all system
Subject: xl2tpd: Version 1.3.6+dfsg-4 freezes all system
Package: xl2tpd
Version: 1.3.6+dfsg-4
Severity: important
Dear Maintainer,
After system upgrade, xl2tpd version was updated to 1.3.6+dfsg-4 from
1.3.6+dfsg-3. Now, when I start xl2tpd.service it causes complete freeze
of my system (with and without X), so i had to use alt+sysrq+b to reboot
the machine. When system booted, I tried to log in without starting
xl2tpd and there was no freezes at all (so, I'm sure it's xl2tpd-related,
maybe partially ppp-related (conflict?)). If I start xl2tpd without
starting Xorg, there's messages like that (from /var/log/messages):
---------
Dec 1 14:50:51 fatrat kernel: [ 329.842544] xl2tpd[2043]: segfault at 17c ip 08052de3 sp bf91f8e0 error 4 in xl2tpd[8048000+1e000]
Dec 1 14:50:51 fatrat pppd[2133]: Plugin pppol2tp.so loaded.
Dec 1 14:50:51 fatrat pppd[2133]: pppd 2.4.6 started by root, uid 0
Dec 1 14:50:51 fatrat pppd[2133]: Couldn't allocate PPP unit 0 as it is already in use
Dec 1 14:51:14 fatrat kernel: [ 352.090275] xl2tpd[2127]: segfault at 17c ip 08052de3 sp bf9a1850 error 4 in xl2tpd[8048000+1e000]
Dec 1 14:53:22 fatrat kernel: [ 480.068049] panel-8-netload D 00000000 0 816 769 0x00000000
Dec 1 14:53:22 fatrat kernel: [ 480.068054] f2133e58 00200086 00000000 00000000 00000000 000055c2 00000000 f39e4200
Dec 1 14:53:22 fatrat kernel: [ 480.068058] 0000004c f2124880 f2134000 f2124880 ffffffff f2133e64 c1486f29 c1675fd8
Dec 1 14:53:22 fatrat kernel: [ 480.068062] f2133e6c c14870ed f2133e90 c1488393 c1675fdc f6807ee4 f22dfe80 f2124880
Dec 1 14:53:22 fatrat kernel: [ 480.068066] Call Trace:
Dec 1 14:53:22 fatrat kernel: [ 480.068074] [<c1486f29>] ? schedule+0x29/0x80
Dec 1 14:53:22 fatrat kernel: [ 480.068078] [<c14870ed>] ? schedule_preempt_disabled+0xd/0x10
Dec 1 14:53:22 fatrat kernel: [ 480.068081] [<c1488393>] ? __mutex_lock_slowpath+0x53/0x90
Dec 1 14:53:22 fatrat kernel: [ 480.068083] [<c1487d9b>] ? mutex_lock+0x1b/0x20
Dec 1 14:53:22 fatrat kernel: [ 480.068086] [<c140f5a4>] ? devinet_ioctl+0xb4/0x690
Dec 1 14:53:22 fatrat kernel: [ 480.068090] [<c138c4ac>] ? sock_ioctl+0x11c/0x250
Dec 1 14:53:22 fatrat kernel: [ 480.068093] [<c138c390>] ? sock_fasync+0x80/0x80
Dec 1 14:53:22 fatrat kernel: [ 480.068096] [<c115ab92>] ? do_vfs_ioctl+0x312/0x500
Dec 1 14:53:22 fatrat kernel: [ 480.068099] [<c116106f>] ? destroy_inode+0x2f/0x60
Dec 1 14:53:22 fatrat kernel: [ 480.068101] [<c112684a>] ? remove_vma+0x4a/0x50
Dec 1 14:53:22 fatrat kernel: [ 480.068103] [<c112684a>] ? remove_vma+0x4a/0x50
Dec 1 14:53:22 fatrat kernel: [ 480.068106] [<c112896b>] ? do_munmap+0x1bb/0x340
Dec 1 14:53:22 fatrat kernel: [ 480.068108] [<c115ade0>] ? SyS_ioctl+0x60/0x90
Dec 1 14:53:22 fatrat kernel: [ 480.068110] [<c148981e>] ? sysenter_do_call+0x12/0x12
Dec 1 14:53:22 fatrat kernel: [ 480.068124] pppd D c113db2c 0 2133 1 0x00000000
Dec 1 14:53:22 fatrat kernel: [ 480.068127] f22dfe60 00000082 f22dfe80 c113db2c f22a0000 f286a000 f4f8d200 f3b84e40
Dec 1 14:53:22 fatrat kernel: [ 480.068131] 0000004c f2353100 f22e0000 f2353100 ffffffff f22dfe6c c1486f29 c1675fd8
Dec 1 14:53:22 fatrat kernel: [ 480.068135] f22dfe74 c14870ed f22dfe98 c1488393 c1675fdc f2133e78 c1675fdc f2353100
Dec 1 14:53:22 fatrat kernel: [ 480.068139] Call Trace:
Dec 1 14:53:22 fatrat kernel: [ 480.068142] [<c113db2c>] ? __kmalloc+0x41c/0x520
Dec 1 14:53:22 fatrat kernel: [ 480.068145] [<c1486f29>] ? schedule+0x29/0x80
Dec 1 14:53:22 fatrat kernel: [ 480.068147] [<c14870ed>] ? schedule_preempt_disabled+0xd/0x10
Dec 1 14:53:22 fatrat kernel: [ 480.068150] [<c1488393>] ? __mutex_lock_slowpath+0x53/0x90
Dec 1 14:53:22 fatrat kernel: [ 480.068152] [<c1487d9b>] ? mutex_lock+0x1b/0x20
Dec 1 14:53:22 fatrat kernel: [ 480.068157] [<f8373919>] ? ppp_ioctl+0xb29/0xe70 [ppp_generic]
Dec 1 14:53:22 fatrat kernel: [ 480.068160] [<f83710a0>] ? ppp_dev_init+0x20/0x20 [ppp_generic]
Dec 1 14:53:22 fatrat kernel: [ 480.068164] [<c1181f77>] ? fsnotify+0x3a7/0x550
Dec 1 14:53:22 fatrat kernel: [ 480.068167] [<f8372df0>] ? ppp_register_channel+0x20/0x20 [ppp_generic]
Dec 1 14:53:22 fatrat kernel: [ 480.068170] [<c115ab92>] ? do_vfs_ioctl+0x312/0x500
Dec 1 14:53:22 fatrat kernel: [ 480.068173] [<c1149ce0>] ? vfs_write+0x160/0x1a0
Dec 1 14:53:22 fatrat kernel: [ 480.068176] [<c115ade0>] ? SyS_ioctl+0x60/0x90
Dec 1 14:53:22 fatrat kernel: [ 480.068178] [<c148981e>] ? sysenter_do_call+0x12/0x12
Dec 1 14:53:36 fatrat org.gtk.vfs.Daemon[743]: A connection to the bus can't be made
Dec 1 14:53:36 fatrat org.a11y.atspi.Registry[900]: XIO: fatal IO error 11 (Resource temporarily unavailable) on X server ":0"
Dec 1 14:53:36 fatrat org.a11y.atspi.Registry[900]: after 785 requests (785 known processed) with 0 events remaining.
Dec 1 14:53:36 fatrat org.gtk.vfs.Daemon[743]: A connection to the bus can't be made
-------
So, I had to install previous version (1.3.6+dfsg-3) from testing. It
works with no problems at all, no freezes, etc.
-- System Information:
Debian Release: stretch/sid
APT prefers unstable
APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)
Kernel: Linux 4.3.0-trunk-686-pae (SMP w/2 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 xl2tpd depends on:
ii libc6 2.19-22
ii libpcap0.8 1.7.4-2
ii ppp 2.4.6-3.1
xl2tpd recommends no packages.
xl2tpd suggests no packages.
-- Configuration Files:
I doubt that this bug is related to configuration files since previous
version works great with the same configs and bug affects to the system,
not to xl2tpd functions. But I'll send you configs if it's really
important.
-- no debconf information
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