[Qemu-devel] [Bug 668799] Re: qemu-arm segfaults executing msgmerge (gettext)

[Erik de Castro Lopo]

The test I'm using in  LP:1098729 hangs or segfaults nearly every single
run.

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https://bugs.launchpad.net/bugs/668799

Title:
  qemu-arm segfaults executing msgmerge (gettext)

Status in QEMU:
  New
Status in Linaro 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

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