[Bugs] [Bug 1210137] qcow2 image creation using qemu-img hits segmentation fault

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1210137



--- Comment #1 from SATHEESARAN <sasundar at redhat.com> ---
I did a strace while executing the qemu-img command and got the following :
open("gluster://root@10.70.37.113/repv/vm6.img", O_RDONLY|O_NONBLOCK|O_CLOEXEC)
= -1 ENOENT (No such file or directory)
open("gluster://root@10.70.37.113/repv/vm6.img", O_RDONLY|O_NONBLOCK|O_CLOEXEC)
= -1 ENOENT (No such file or directory)
stat("gluster://root@10.70.37.113/repv/vm6.img", 0x7f07cb6c4d20) = -1 ENOENT
(No such file or directory)
uname({sys="Linux", node="rhs-client15.lab.eng.blr.redhat.com", ...}) = 0
mmap(NULL, 131072, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7f07cb5a5000
mmap(NULL, 262144, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7f07cb565000
mmap(NULL, 1048576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7f07c586f000
mmap(NULL, 1048576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7f07c576f000
mmap(NULL, 2097152, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7f07c556f000
mmap(NULL, 4194304, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7f07c516f000
mmap(NULL, 2097152, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7f07c4f6f000
mmap(NULL, 2097152, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7f07c4d6f000
epoll_create(16384)                     = 6
rt_sigprocmask(SIG_BLOCK, ~[ILL ABRT BUS FPE SEGV SYS RTMIN RT_1], [BUS USR1
ALRM IO], 8) = 0
clone(child_stack=0x7f07bcfb0f70,
flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID,
parent_tidptr=0x7f07bcfb19d0, tls=0x7f07bcfb1700, child_tidptr=0x7f07bcfb19d0)
= 11387
rt_sigprocmask(SIG_SETMASK, [BUS USR1 ALRM IO], Process 11387 attached
NULL, 8) = 0
[pid 11380] rt_sigprocmask(SIG_BLOCK, ~[ILL ABRT BUS FPE SEGV SYS RTMIN RT_1], 
<unfinished ...>
[pid 11387] set_robust_list(0x7f07bcfb19e0, 24 <unfinished ...>
[pid 11380] <... rt_sigprocmask resumed> [BUS USR1 ALRM IO], 8) = 0
[pid 11380] clone( <unfinished ...>
[pid 11387] <... set_robust_list resumed> ) = 0
[pid 11380] <... clone resumed> child_stack=0x7f07bbdabf70,
flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID,
parent_tidptr=0x7f07bbdac9d0, tls=0x7f07bbdac700, child_tidptr=0x7f07bbdac9d0)
= 11388
Process 11388 attached
[pid 11380] rt_sigprocmask(SIG_SETMASK, [BUS USR1 ALRM IO],  <unfinished ...>
[pid 11387] futex(0x7f07cd32a91c,
FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 1, {1428548144, 0}, ffffffff
<unfinished ...>
[pid 11380] <... rt_sigprocmask resumed> NULL, 8) = 0
[pid 11380] brk(0)                      = 0x7f07cd379000
[pid 11380] brk(0x7f07cd433000 <unfinished ...>
[pid 11388] set_robust_list(0x7f07bbdac9e0, 24 <unfinished ...>
[pid 11380] <... brk resumed> )         = 0x7f07cd433000
[pid 11388] <... set_robust_list resumed> ) = 0
[pid 11388] futex(0x7f07cd32a91c,
FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 2, {1428548144, 0}, ffffffff
<unfinished ...>
[pid 11380] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=0x8}
---
[pid 11388] +++ killed by SIGSEGV +++
[pid 11387] +++ killed by SIGSEGV +++
+++ killed by SIGSEGV +++
Segmentation fault

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