Hi,
I fall in a system problem using tmux: the system (OpenBSD -current
on i386) freeze (but no panic).
As simple user, these commands hang the system (inside tmux session):
$ tmux -g set-titles on
$ tmux split-window "echo aaa"
The hang is relatively repeatable, I test it:
- on my laptop (i386), with two differents users
- on qemu, as root, single-user mode
By relatively, I mean that the system not hang every time I test, and I
have to augment the size of "aaaaaa" argument to hang occurs if need.
Is it reproductible ?
Thanks.
Example of session in qemu:
> boot -s
...
# kbd fr
kbd: keyboard mapping set to fr
# fsck -p
[...]
# mount -a
# sysctl ddb.console=1
ddb.console: 0 -> 1
# export TERM=vt220
# tmux
[inside tmux]
# tmux set -g set-titles on
set option: set-titles -> on
# tmux split-window "echo aaa"
# tmux split-window "echo aaa"
# tmux split-window "echo aaa"
# tmux split-window "echo aaaaaaa"
# tmux split-window "echo aaaaaaaaaaa"
[hang]
Stopped at Debugger+0x4: popl %ebp
ddb> trace
Debugger(d0af3b00,1,b,f1e30e52,f1e30e50) at Debugger+0x4
internal_command(d0fcf500,f1e30e44,f420,1b,f1e30e58) at
internal_command+0x137
wskbd_translate(d0af3b00,2,1,1,d1009500) at wskbd_translate+0x73
wskbd_input(d0fcf500,2,1,d03c82e3,d0a94f48) at wskbd_input+0x50
pckbd_input(d1009500,1,0,80000000,5f5e100) at pckbd_input+0xa3
pckbcintr_internal(d0af4ce0,d1009480,f1e30ed4,d0202466,d1009480) at
pckbcintr_i
nternal+0x93
pckbcintr(d1009480,d0fdb340) at pckbcintr+0x18
Xintr_ioapic1() at Xintr_ioapic1+0x65
--- interrupt ---
Xsoftclock() at Xsoftclock+0xd
--- interrupt ---
cpu_idle_cycle(d0bbb620) at cpu_idle_cycle+0xf
Bad frame pointer: 0xd0c80e58
ddb> ps
PID PPID PGRP UID S FLAGS WAIT COMMAND
10350 10747 10350 0 3 0x208b ttyout ksh
31442 5472 31442 0 3 0x83 kqread tmux
5472 10747 5472 0 3 0x8b pause ksh
10747 1 10747 0 3 0 inode tmux
14309 32015 14309 0 3 0x83 kqread tmux
32015 1 32015 0 3 0x8b pause sh
12 0 0 0 3 0x100200 aiodoned aiodoned
11 0 0 0 3 0x100200 syncer update
10 0 0 0 3 0x100200 cleaner cleaner
9 0 0 0 3 0x100200 reaper reaper
8 0 0 0 3 0x100200 pgdaemon pagedaemon
7 0 0 0 3 0x100200 bored crypto
6 0 0 0 3 0x100200 pftm pfpurge
5 0 0 0 3 0x40100200 acpi0 acpi0
4 0 0 0 3 0x100200 bored syswq
* 3 0 0 0 7 0x40100200 idle0
2 0 0 0 3 0x100200 kmalloc kmthread
1 0 1 0 3 0x82 wait init
0 -1 0 0 3 0x200 scheduler swapper
ddb> dmesg
OpenBSD 5.4-current (GENERIC) #67: Fri Oct 11 14:59:34 MDT 2013
dera...@i386.openbsd.org:/usr/src/sys/arch/i386/compile/GENERIC
cpu0: QEMU Virtual CPU version 1.6.0 ("GenuineIntel" 686-class) 1.83 GHz
cpu0: FPU,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,PGE,CMOV,MMX,FXSR,SSE,SSE2,SSE3,POPC
NT,PERF
real mem = 133746688 (127MB)
avail mem = 119861248 (114MB)
mainbus0 at root
bios0 at mainbus0: AT/286+ BIOS, date 06/23/99, BIOS32 rev. 0 @ 0xfd511, SMBIOS
rev. 2.4 @ 0xf1720 (10 entries)
bios0: vendor Bochs version "Bochs" date 01/01/2011
bios0: Bochs Bochs
acpi0 at bios0: rev 0
acpi0: sleep states S3 S4 S5
acpi0: tables DSDT FACP SSDT APIC HPET
acpi0: wakeup devices
acpitimer0 at acpi0: 3579545 Hz, 24 bits
acpimadt0 at acpi0 addr 0xfee00000: PC-AT compat
acpihpet0 at acpi0: 100000000 Hz
acpiprt0 at acpi0: bus 0 (PCI0)
acpicpu0 at acpi0
mpbios0 at bios0: Intel MP Specification 1.4
cpu0 at mainbus0: apid 0 (boot processor)
cpu0: apic clock running at 1000MHz
mpbios0: bus 0 is type PCI
mpbios0: bus 1 is type ISA
ioapic0 at mainbus0: apid 0 pa 0xfec00000, version 11, 24 pins
bios0: ROM list: 0xc0000/0x8c00 0xc9000/0xa00 0xca000/0x2400! 0xee800/0x1800!
pci0 at mainbus0 bus 0: configuration mode 1 (bios)
pchb0 at pci0 dev 0 function 0 "Intel 82441FX" rev 0x02
pcib0 at pci0 dev 1 function 0 "Intel 82371SB ISA" rev 0x00
pciide0 at pci0 dev 1 function 1 "Intel 82371SB IDE" rev 0x00: DMA, channel 0 w
ired to compatibility, channel 1 wired to compatibility
wd0 at pciide0 channel 0 drive 0: <QEMU HARDDISK>
wd0: 16-sector PIO, LBA48, 2048MB, 4194304 sectors
wd0(pciide0:0:0): using PIO mode 4, DMA mode 2
atapiscsi0 at pciide0 channel 1 drive 0
scsibus0 at atapiscsi0: 2 targets
cd0 at scsibus0 targ 0 lun 0: <QEMU, QEMU DVD-ROM, 1.6.> ATAPI 5/cdrom removabl
e
cd0(pciide0:1:0): using PIO mode 4, DMA mode 2
piixpm0 at pci0 dev 1 function 3 "Intel 82371AB Power" rev 0x03: apic 0 int 9
iic0 at piixpm0
vga1 at pci0 dev 2 function 0 "Cirrus Logic CL-GD5446" rev 0x00
wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
em0 at pci0 dev 3 function 0 "Intel 82540EM" rev 0x03: apic 0 int 11, address 5
2:54:00:12:34:56
isa0 at pcib0
isadma0 at isa0
com0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
com0: console
pckbc0 at isa0 port 0x60/5
pckbd0 at pckbc0 (kbd slot)
wskbd0 at pckbd0: console keyboard, using wsdisplay0
pms0 at pckbc0 (aux slot)
pckbc0: using irq 12 for aux slot
wsmouse0 at pms0 mux 0
pcppi0 at isa0 port 0x61
spkr0 at pcppi0
lpt0 at isa0 port 0x378/4 irq 7
npx0 at isa0 port 0xf0/16: reported by CPUID; using exception 16
fdc0 at isa0 port 0x3f0/6 irq 6 drq 2
fd0 at fdc0 drive 1: density unknown
nvram: invalid checksum
vscsi0 at root
scsibus1 at vscsi0: 256 targets
softraid0 at root
scsibus2 at softraid0: 256 targets
root on wd0a (ab8fcda4850f14e9.a) swap on wd0b dump on wd0b
WARNING: / was not properly unmounted
clock: unknown CMOS layout
--
Sébastien Marie
