See linux-user/main.c function start_exclusive.
--
qemu-arm segfaults executing msgmerge (gettext)
https://bugs.launchpad.net/bugs/668799
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Status in QEMU: New
Bug description:
upstream qemu.git revision b45e9c05dbacba8e992f0bffeca04c6379c3ad45
Starting program: /usr/bin/qemu-arm msgmerge-static ar.po anjuta.pot
[Thread debugging using libthread_db enabled]
[New Thread 0x7ffff4bc3ff0 (LWP 26108)]
[New Thread 0x7ffff4b8aff0 (LWP 26109)]
[New Thread 0x7ffff4b51ff0 (LWP 26110)]
[New Thread 0x7ffff4b18ff0 (LWP 26111)]
[New Thread 0x7ffff4adfff0 (LWP 26112)]
[New Thread 0x7ffff4aa6ff0 (LWP 26113)]
[New Thread 0x7ffff4a6dff0 (LWP 26114)]
[New Thread 0x7ffff4a34ff0 (LWP 26115)]
[New Thread 0x7ffff49fbff0 (LWP 26116)]
[New Thread 0x7ffff49c2ff0 (LWP 26117)]
[New Thread 0x7ffff4989ff0 (LWP 26118)]
[New Thread 0x7ffff4950ff0 (LWP 26119)]
[New Thread 0x7ffff4917ff0 (LWP 26120)]
[New Thread 0x7ffff48deff0 (LWP 26121)]
[New Thread 0x7ffff48a5ff0 (LWP 26122)]
[New Thread 0x7ffff486cff0 (LWP 26123)]
[New Thread 0x7ffff4833ff0 (LWP 26124)]
[New Thread 0x7ffff47faff0 (LWP 26125)]
[New Thread 0x7ffff47c1ff0 (LWP 26126)]
[New Thread 0x7ffff4788ff0 (LWP 26127)]
[New Thread 0x7ffff474fff0 (LWP 26128)]
[New Thread 0x7ffff4716ff0 (LWP 26129)]
[New Thread 0x7ffff46ddff0 (LWP 26130)]
.........................
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7ffff4aa6ff0 (LWP 26113)]
0x00000000600480d4 in tb_reset_jump_recursive2 (tb=0x7ffff4c63540, n=0)
at /home/user/git/qemu/exec.c:1333
1333 tb1 = tb1->jmp_next[n1];
(gdb) bt
#0 0x00000000600480d4 in tb_reset_jump_recursive2 (tb=0x7ffff4c63540, n=0)
at /home/user/git/qemu/exec.c:1333
#1 0x00000000600481c0 in tb_reset_jump_recursive (tb=0x7ffff4c63540)
at /home/user/git/qemu/exec.c:1361
#2 0x0000000060048160 in tb_reset_jump_recursive2 (tb=0x7ffff4c634d8, n=0)
at /home/user/git/qemu/exec.c:1355
#3 0x00000000600481c0 in tb_reset_jump_recursive (tb=0x7ffff4c634d8)
at /home/user/git/qemu/exec.c:1361
#4 0x0000000060048160 in tb_reset_jump_recursive2 (tb=0x7ffff4c63470, n=0)
at /home/user/git/qemu/exec.c:1355
#5 0x00000000600481c0 in tb_reset_jump_recursive (tb=0x7ffff4c63470)
at /home/user/git/qemu/exec.c:1361
#6 0x0000000060048160 in tb_reset_jump_recursive2 (tb=0x7ffff4c63408, n=1)
at /home/user/git/qemu/exec.c:1355
#7 0x00000000600481d1 in tb_reset_jump_recursive (tb=0x7ffff4c63408)
at /home/user/git/qemu/exec.c:1362
#8 0x0000000060048160 in tb_reset_jump_recursive2 (tb=0x7ffff4c633a0, n=0)
at /home/user/git/qemu/exec.c:1355
#9 0x00000000600481c0 in tb_reset_jump_recursive (tb=0x7ffff4c633a0)
at /home/user/git/qemu/exec.c:1361
#10 0x0000000060048160 in tb_reset_jump_recursive2 (tb=0x7ffff4c63338, n=0)
at /home/user/git/qemu/exec.c:1355
#11 0x00000000600481c0 in tb_reset_jump_recursive (tb=0x7ffff4c63338)
at /home/user/git/qemu/exec.c:1361
#12 0x0000000060048160 in tb_reset_jump_recursive2 (tb=0x7ffff4c632d0, n=0)
at /home/user/git/qemu/exec.c:1355
---Type <return> to continue, or q <return> to quit---
#13 0x00000000600481c0 in tb_reset_jump_recursive (tb=0x7ffff4c632d0)
at /home/user/git/qemu/exec.c:1361
#14 0x0000000060048160 in tb_reset_jump_recursive2 (tb=0x7ffff4c63268, n=1)
at /home/user/git/qemu/exec.c:1355
#15 0x00000000600481d1 in tb_reset_jump_recursive (tb=0x7ffff4c63268)
at /home/user/git/qemu/exec.c:1362
#16 0x0000000060048160 in tb_reset_jump_recursive2 (tb=0x7ffff4c63200, n=0)
at /home/user/git/qemu/exec.c:1355
#17 0x00000000600481c0 in tb_reset_jump_recursive (tb=0x7ffff4c63200)
at /home/user/git/qemu/exec.c:1361
#18 0x00000000600487c5 in cpu_unlink_tb (env=0x62385400) at
/home/user/git/qemu/exec.c:1617
#19 0x00000000600488e8 in cpu_exit (env=0x62385400) at
/home/user/git/qemu/exec.c:1662
#20 0x0000000060000798 in start_exclusive () at
/home/user/git/qemu/linux-user/main.c:152
#21 0x0000000060000a4b in do_kernel_trap (env=0x62359940)
at /home/user/git/qemu/linux-user/main.c:493
#22 0x00000000600023f3 in cpu_loop (env=0x62359940) at
/home/user/git/qemu/linux-user/main.c:797
#23 0x00000000600123df in clone_func (arg=0x7ffffffd76e0)
at /home/user/git/qemu/linux-user/syscall.c:3561
#24 0x00000000600b382d in start_thread (arg=<value optimized out>) at
pthread_create.c:297
#25 0x00000000600f1809 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#26 0x0000000000000000 in ?? ()
(gdb)
Its interesting to see this :
#0 0x00000000600480d4 in tb_reset_jump_recursive2 (tb=0x7ffff4c63540, n=0)
at /home/user/git/qemu/exec.c:1333
tb1 = 0x0 <<<<<<<<<<
tb_next = 0xf4c63610 <<<<<<<<<<
ptb = 0x60341c91 <<<<<<<<<<
n1 = 0
#1 0x00000000600481c0 in tb_reset_jump_recursive (tb=0x7ffff4c63540)
at /home/user/git/qemu/exec.c:1361
No locals.
#2 0x0000000060048160 in tb_reset_jump_recursive2 (tb=0x7ffff4c634d8, n=0)
at /home/user/git/qemu/exec.c:1355
tb1 = 0x7ffff4c634d8 <<<<<<<<<<<
tb_next = 0x7ffff4c63540 <<<<<<<<<<<
ptb = 0x7ffff4c63860 <<<<<<<<<<<
n1 = 0
#3 0x00000000600481c0 in tb_reset_jump_recursive (tb=0x7ffff4c634d8)
at /home/user/git/qemu/exec.c:1361
No locals.
#4 0x0000000060048160 in tb_reset_jump_recursive2 (tb=0x7ffff4c63470, n=0)
at /home/user/git/qemu/exec.c:1355
tb1 = 0x7ffff4c63470
tb_next = 0x7ffff4c634d8
ptb = 0x7ffff4c63530
n1 = 0
#5 0x00000000600481c0 in tb_reset_jump_recursive (tb=0x7ffff4c63470)
at /home/user/git/qemu/exec.c:1361
