https://bugzilla.redhat.com/show_bug.cgi?id=1221824



--- Comment #26 from John Eckersberg <[email protected]> ---
I can reproduce this as well following comment 23.  Something is going horribly
wrong and destroying the stack.

(gdb) t a a bt

Thread 19 (Thread 0xf3614b40 (LWP 24996)):
#0  0xf7fd6ba0 in ?? ()

Thread 18 (Thread 0xf3e15b40 (LWP 24995)):
#0  0xf7fd6ba0 in ?? ()

Thread 17 (Thread 0xf4616b40 (LWP 24994)):
#0  0xf7fd6ba0 in ?? ()

Thread 16 (Thread 0xf4e17b40 (LWP 24993)):
#0  0x56798dae in ethr_dw_atomic_cmpxchg () at
../include/internal/i386/atomic.h:177
#1  0x568688f0 in erts_proc ()

Thread 15 (Thread 0xf5618b40 (LWP 24992)):
#0  0xf7fd6ba0 in ?? ()

Thread 14 (Thread 0xf628bb40 (LWP 24991)):
#0  0xf7fd6ba0 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7

Thread 13 (Thread 0xf5629b40 (LWP 24990)):
#0  0xf7fd6ba0 in ?? ()

Thread 12 (Thread 0xf563ab40 (LWP 24989)):
#0  0xf7fd6ba0 in ?? ()

Thread 11 (Thread 0xf564bb40 (LWP 24988)):
#0  0xf7fd6ba0 in ?? ()

Thread 10 (Thread 0xf565cb40 (LWP 24987)):
#0  0xf7fd6ba0 in ?? ()

Thread 9 (Thread 0xf566db40 (LWP 24986)):
#0  0xf7fd6ba0 in ?? ()

Thread 8 (Thread 0xf567eb40 (LWP 24985)):
#0  0xf7fd6ba0 in ?? ()

Thread 7 (Thread 0xf629cb40 (LWP 24984)):
#0  0xf7fd6ba0 in ?? ()

Thread 6 (Thread 0xf62adb40 (LWP 24983)):
#0  0xf7fd6ba0 in ?? ()

Thread 5 (Thread 0xf62beb40 (LWP 24982)):
#0  0xf7fd6ba0 in ?? ()

Thread 4 (Thread 0xf6d13b40 (LWP 24981)):
#0  0xf7fd6ba0 in ?? ()

Thread 3 (Thread 0xf5e7fb40 (LWP 24980)):
#0  0xf7fd6ba0 in ?? ()
Backtrace stopped: Cannot access memory at address 0x7

Thread 2 (Thread 0xf6cbfb40 (LWP 24979)):
#0  0xf7fd6ba0 in ?? ()
#1  0xc0000000 in ?? ()
#2  0xaef6cc00 in ?? ()
#3  0xc556797e in ?? ()
#4  0x88567a24 in ?? ()
#5  0x00f6cc00 in ?? ()
#6  0x00000000 in ?? ()

Thread 1 (Thread 0xf7d31700 (LWP 24975)):
#0  0xf7fd6ba0 in ?? ()
#1  0xf7db19b9 in strstr () from /lib/libc.so.6
#2  0x00000000 in ?? ()


The current thread is 16:

(gdb) bt
#0  0x56798dae in ethr_dw_atomic_cmpxchg () at
../include/internal/i386/atomic.h:177
#1  0x568688f0 in erts_proc ()


Note that erts_proc isn't even a function, it's a variable, and ebp points
somewhere in the middle of it:

(gdb) p &erts_proc
$5 = (ErtsPTab *) 0x568688c0 <erts_proc>
(gdb) p sizeof erts_proc
$6 = 320
(gdb) i r ebp
ebp            0x568688f0       0x568688f0 <erts_proc+48>

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