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* [Bug nptl/14562] New: threaded programs with x32 abi randomly crash with arena.c:661: heap_trim: Assertion `p->size == (0|0x1)' failed
@ 2012-09-07 23:49 vapier at gentoo dot org
2012-09-08 0:43 ` [Bug nptl/14562] " hjl.tools at gmail dot com
` (14 more replies)
0 siblings, 15 replies; 16+ messages in thread
From: vapier at gentoo dot org @ 2012-09-07 23:49 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=14562
Bug #: 14562
Summary: threaded programs with x32 abi randomly crash with
arena.c:661: heap_trim: Assertion `p->size == (0|0x1)'
failed
Product: glibc
Version: 2.16
URL: https://bugs.gentoo.org/show_bug.cgi?id=394175
Status: NEW
Severity: normal
Priority: P2
Component: nptl
AssignedTo: unassigned@sourceware.org
ReportedBy: vapier@gentoo.org
CC: drepper.fsp@gmail.com
Classification: Unclassified
test case:
- use glibc-2.16 with x32 abi
- get a bunch of files (like ~150; perl man pages are a sample input)
- run `bzip2 -k <files>`
- run `pbzip2 -k -f <files> -p4`
see crash:
pbzip2: arena.c:661: heap_trim: Assertion `p->size == (0|0x1)' failed.
this has happened with a other threaded programs (git & squashfs); see gentoo
bug for some more details
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* [Bug nptl/14562] threaded programs with x32 abi randomly crash with arena.c:661: heap_trim: Assertion `p->size == (0|0x1)' failed
2012-09-07 23:49 [Bug nptl/14562] New: threaded programs with x32 abi randomly crash with arena.c:661: heap_trim: Assertion `p->size == (0|0x1)' failed vapier at gentoo dot org
@ 2012-09-08 0:43 ` hjl.tools at gmail dot com
2012-09-08 1:03 ` hjl.tools at gmail dot com
` (13 subsequent siblings)
14 siblings, 0 replies; 16+ messages in thread
From: hjl.tools at gmail dot com @ 2012-09-08 0:43 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=14562
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |hjl.tools at gmail dot com
--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> 2012-09-08 00:42:46 UTC ---
hjl/x32/release/2.15 branch is OK.
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* [Bug nptl/14562] threaded programs with x32 abi randomly crash with arena.c:661: heap_trim: Assertion `p->size == (0|0x1)' failed
2012-09-07 23:49 [Bug nptl/14562] New: threaded programs with x32 abi randomly crash with arena.c:661: heap_trim: Assertion `p->size == (0|0x1)' failed vapier at gentoo dot org
2012-09-08 0:43 ` [Bug nptl/14562] " hjl.tools at gmail dot com
@ 2012-09-08 1:03 ` hjl.tools at gmail dot com
2012-09-08 4:03 ` hjl.tools at gmail dot com
` (12 subsequent siblings)
14 siblings, 0 replies; 16+ messages in thread
From: hjl.tools at gmail dot com @ 2012-09-08 1:03 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=14562
--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> 2012-09-08 01:03:14 UTC ---
Copy malloc from hjl/x32/release/2.15 branch makes the
problem goes away.
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* [Bug nptl/14562] threaded programs with x32 abi randomly crash with arena.c:661: heap_trim: Assertion `p->size == (0|0x1)' failed
2012-09-07 23:49 [Bug nptl/14562] New: threaded programs with x32 abi randomly crash with arena.c:661: heap_trim: Assertion `p->size == (0|0x1)' failed vapier at gentoo dot org
2012-09-08 0:43 ` [Bug nptl/14562] " hjl.tools at gmail dot com
2012-09-08 1:03 ` hjl.tools at gmail dot com
@ 2012-09-08 4:03 ` hjl.tools at gmail dot com
2012-09-08 14:04 ` [Bug malloc/14562] " hjl.tools at gmail dot com
` (11 subsequent siblings)
14 siblings, 0 replies; 16+ messages in thread
From: hjl.tools at gmail dot com @ 2012-09-08 4:03 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=14562
--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> 2012-09-08 04:03:06 UTC ---
The bug is triggered by MALLOC_ALIGNMENT=16.
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* [Bug malloc/14562] threaded programs with x32 abi randomly crash with arena.c:661: heap_trim: Assertion `p->size == (0|0x1)' failed
2012-09-07 23:49 [Bug nptl/14562] New: threaded programs with x32 abi randomly crash with arena.c:661: heap_trim: Assertion `p->size == (0|0x1)' failed vapier at gentoo dot org
` (2 preceding siblings ...)
2012-09-08 4:03 ` hjl.tools at gmail dot com
@ 2012-09-08 14:04 ` hjl.tools at gmail dot com
2012-09-08 14:52 ` hjl.tools at gmail dot com
` (10 subsequent siblings)
14 siblings, 0 replies; 16+ messages in thread
From: hjl.tools at gmail dot com @ 2012-09-08 14:04 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=14562
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Component|nptl |malloc
Target Milestone|--- |2.16
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* [Bug malloc/14562] threaded programs with x32 abi randomly crash with arena.c:661: heap_trim: Assertion `p->size == (0|0x1)' failed
2012-09-07 23:49 [Bug nptl/14562] New: threaded programs with x32 abi randomly crash with arena.c:661: heap_trim: Assertion `p->size == (0|0x1)' failed vapier at gentoo dot org
` (3 preceding siblings ...)
2012-09-08 14:04 ` [Bug malloc/14562] " hjl.tools at gmail dot com
@ 2012-09-08 14:52 ` hjl.tools at gmail dot com
2012-09-08 15:30 ` hjl.tools at gmail dot com
` (9 subsequent siblings)
14 siblings, 0 replies; 16+ messages in thread
From: hjl.tools at gmail dot com @ 2012-09-08 14:52 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=14562
--- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> 2012-09-08 14:52:34 UTC ---
663 assert(p->size == (0|PREV_INUSE)); /* must be fencepost */
(gdb) p p
$34 = (mchunkptr) 0xf55feff8
(gdb)
p isn't 16-byte aligned.
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* [Bug malloc/14562] threaded programs with x32 abi randomly crash with arena.c:661: heap_trim: Assertion `p->size == (0|0x1)' failed
2012-09-07 23:49 [Bug nptl/14562] New: threaded programs with x32 abi randomly crash with arena.c:661: heap_trim: Assertion `p->size == (0|0x1)' failed vapier at gentoo dot org
` (4 preceding siblings ...)
2012-09-08 14:52 ` hjl.tools at gmail dot com
@ 2012-09-08 15:30 ` hjl.tools at gmail dot com
2012-09-08 20:44 ` hjl.tools at gmail dot com
` (8 subsequent siblings)
14 siblings, 0 replies; 16+ messages in thread
From: hjl.tools at gmail dot com @ 2012-09-08 15:30 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=14562
--- Comment #5 from H.J. Lu <hjl.tools at gmail dot com> 2012-09-08 15:30:13 UTC ---
The size of top chunk must be a multiple of MALLOC_ALIGNMENT.
But _int_new_arena has
/* Set up the top chunk, with proper alignment. */
ptr = (char *)(a + 1);
misalign = (unsigned long)chunk2mem(ptr) & MALLOC_ALIGN_MASK;
if (misalign > 0)
ptr += MALLOC_ALIGNMENT - misalign;
top(a) = (mchunkptr)ptr;
set_head(top(a), (((char*)h + h->size) - ptr) | PREV_INUSE);
It doesn't check size requirement.
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* [Bug malloc/14562] threaded programs with x32 abi randomly crash with arena.c:661: heap_trim: Assertion `p->size == (0|0x1)' failed
2012-09-07 23:49 [Bug nptl/14562] New: threaded programs with x32 abi randomly crash with arena.c:661: heap_trim: Assertion `p->size == (0|0x1)' failed vapier at gentoo dot org
` (5 preceding siblings ...)
2012-09-08 15:30 ` hjl.tools at gmail dot com
@ 2012-09-08 20:44 ` hjl.tools at gmail dot com
2012-09-08 20:48 ` hjl.tools at gmail dot com
` (7 subsequent siblings)
14 siblings, 0 replies; 16+ messages in thread
From: hjl.tools at gmail dot com @ 2012-09-08 20:44 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=14562
--- Comment #6 from H.J. Lu <hjl.tools at gmail dot com> 2012-09-08 20:43:47 UTC ---
I am testing this patch:
diff --git a/malloc/arena.c b/malloc/arena.c
index f88b41d..ac5afc4 100644
--- a/malloc/arena.c
+++ b/malloc/arena.c
@@ -655,14 +655,22 @@ heap_trim(heap_info *heap, size_t pad)
mchunkptr top_chunk = top(ar_ptr), p, bck, fwd;
heap_info *prev_heap;
long new_size, top_size, extra;
+ unsigned long misalign;
/* Can this heap go away completely? */
while(top_chunk == chunk_at_offset(heap, sizeof(*heap))) {
prev_heap = heap->prev;
p = chunk_at_offset(prev_heap, prev_heap->size - (MINSIZE-2*SIZE_SZ));
+ /* fencepost must be properly aligned. */
+ misalign = ((unsigned long) p) & MALLOC_ALIGN_MASK;
+ if (misalign > 0)
+ {
+ p = (mchunkptr)(((unsigned long) p) & ~MALLOC_ALIGN_MASK);
+ misalign = MALLOC_ALIGNMENT - misalign;
+ }
assert(p->size == (0|PREV_INUSE)); /* must be fencepost */
p = prev_chunk(p);
- new_size = chunksize(p) + (MINSIZE-2*SIZE_SZ);
+ new_size = chunksize(p) + (MINSIZE-2*SIZE_SZ) + misalign;
assert(new_size>0 && new_size<(long)(2*MINSIZE));
if(!prev_inuse(p))
new_size += p->prev_size;
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* [Bug malloc/14562] threaded programs with x32 abi randomly crash with arena.c:661: heap_trim: Assertion `p->size == (0|0x1)' failed
2012-09-07 23:49 [Bug nptl/14562] New: threaded programs with x32 abi randomly crash with arena.c:661: heap_trim: Assertion `p->size == (0|0x1)' failed vapier at gentoo dot org
` (6 preceding siblings ...)
2012-09-08 20:44 ` hjl.tools at gmail dot com
@ 2012-09-08 20:48 ` hjl.tools at gmail dot com
2012-09-08 20:58 ` hjl.tools at gmail dot com
` (6 subsequent siblings)
14 siblings, 0 replies; 16+ messages in thread
From: hjl.tools at gmail dot com @ 2012-09-08 20:48 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=14562
--- Comment #7 from H.J. Lu <hjl.tools at gmail dot com> 2012-09-08 20:48:37 UTC ---
This is the right one:
diff --git a/malloc/arena.c b/malloc/arena.c
index f88b41d..8d52109 100644
--- a/malloc/arena.c
+++ b/malloc/arena.c
@@ -655,14 +655,18 @@ heap_trim(heap_info *heap, size_t pad)
mchunkptr top_chunk = top(ar_ptr), p, bck, fwd;
heap_info *prev_heap;
long new_size, top_size, extra;
+ unsigned long misalign;
/* Can this heap go away completely? */
while(top_chunk == chunk_at_offset(heap, sizeof(*heap))) {
prev_heap = heap->prev;
p = chunk_at_offset(prev_heap, prev_heap->size - (MINSIZE-2*SIZE_SZ));
+ /* fencepost must be properly aligned. */
+ misalign = ((unsigned long) p) & MALLOC_ALIGN_MASK;
+ p = (mchunkptr)(((unsigned long) p) & ~MALLOC_ALIGN_MASK);
assert(p->size == (0|PREV_INUSE)); /* must be fencepost */
p = prev_chunk(p);
- new_size = chunksize(p) + (MINSIZE-2*SIZE_SZ);
+ new_size = chunksize(p) + (MINSIZE-2*SIZE_SZ) + misalign;
assert(new_size>0 && new_size<(long)(2*MINSIZE));
if(!prev_inuse(p))
new_size += p->prev_size;
--
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* [Bug malloc/14562] threaded programs with x32 abi randomly crash with arena.c:661: heap_trim: Assertion `p->size == (0|0x1)' failed
2012-09-07 23:49 [Bug nptl/14562] New: threaded programs with x32 abi randomly crash with arena.c:661: heap_trim: Assertion `p->size == (0|0x1)' failed vapier at gentoo dot org
` (7 preceding siblings ...)
2012-09-08 20:48 ` hjl.tools at gmail dot com
@ 2012-09-08 20:58 ` hjl.tools at gmail dot com
2012-09-09 18:30 ` hjl.tools at gmail dot com
` (5 subsequent siblings)
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From: hjl.tools at gmail dot com @ 2012-09-08 20:58 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=14562
--- Comment #8 from H.J. Lu <hjl.tools at gmail dot com> 2012-09-08 20:58:39 UTC ---
This one is better:
diff --git a/malloc/arena.c b/malloc/arena.c
index f88b41d..4727d1e 100644
--- a/malloc/arena.c
+++ b/malloc/arena.c
@@ -654,15 +654,18 @@ heap_trim(heap_info *heap, size_t pad)
unsigned long pagesz = GLRO(dl_pagesize);
mchunkptr top_chunk = top(ar_ptr), p, bck, fwd;
heap_info *prev_heap;
- long new_size, top_size, extra;
+ long new_size, top_size, extra, misalign;
/* Can this heap go away completely? */
while(top_chunk == chunk_at_offset(heap, sizeof(*heap))) {
prev_heap = heap->prev;
p = chunk_at_offset(prev_heap, prev_heap->size - (MINSIZE-2*SIZE_SZ));
+ /* fencepost must be properly aligned. */
+ misalign = ((long) p) & MALLOC_ALIGN_MASK;
+ p = (mchunkptr)(((unsigned long) p) & ~MALLOC_ALIGN_MASK);
assert(p->size == (0|PREV_INUSE)); /* must be fencepost */
p = prev_chunk(p);
- new_size = chunksize(p) + (MINSIZE-2*SIZE_SZ);
+ new_size = chunksize(p) + (MINSIZE-2*SIZE_SZ) + misalign;
assert(new_size>0 && new_size<(long)(2*MINSIZE));
if(!prev_inuse(p))
new_size += p->prev_size;
--
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* [Bug malloc/14562] threaded programs with x32 abi randomly crash with arena.c:661: heap_trim: Assertion `p->size == (0|0x1)' failed
2012-09-07 23:49 [Bug nptl/14562] New: threaded programs with x32 abi randomly crash with arena.c:661: heap_trim: Assertion `p->size == (0|0x1)' failed vapier at gentoo dot org
` (8 preceding siblings ...)
2012-09-08 20:58 ` hjl.tools at gmail dot com
@ 2012-09-09 18:30 ` hjl.tools at gmail dot com
2012-09-10 5:42 ` vapier at gentoo dot org
` (4 subsequent siblings)
14 siblings, 0 replies; 16+ messages in thread
From: hjl.tools at gmail dot com @ 2012-09-09 18:30 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=14562
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |WAITING
AssignedTo|unassigned at sourceware |hjl.tools at gmail dot com
|dot org |
--- Comment #9 from H.J. Lu <hjl.tools at gmail dot com> 2012-09-09 18:29:59 UTC ---
Please try hjl/pr14562/2.16 branch.
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* [Bug malloc/14562] threaded programs with x32 abi randomly crash with arena.c:661: heap_trim: Assertion `p->size == (0|0x1)' failed
2012-09-07 23:49 [Bug nptl/14562] New: threaded programs with x32 abi randomly crash with arena.c:661: heap_trim: Assertion `p->size == (0|0x1)' failed vapier at gentoo dot org
` (9 preceding siblings ...)
2012-09-09 18:30 ` hjl.tools at gmail dot com
@ 2012-09-10 5:42 ` vapier at gentoo dot org
2012-09-10 17:59 ` dschepler at gmail dot com
` (3 subsequent siblings)
14 siblings, 0 replies; 16+ messages in thread
From: vapier at gentoo dot org @ 2012-09-10 5:42 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=14562
--- Comment #10 from Mike Frysinger <vapier at gentoo dot org> 2012-09-10 05:42:25 UTC ---
(In reply to comment #9)
seems to be the same fix as in comment #8 which i've been running locally. it
fixed the known bugs i was hitting, and haven't seen any new ones related to
this. there are other bugs, but those are porting issues :).
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* [Bug malloc/14562] threaded programs with x32 abi randomly crash with arena.c:661: heap_trim: Assertion `p->size == (0|0x1)' failed
2012-09-07 23:49 [Bug nptl/14562] New: threaded programs with x32 abi randomly crash with arena.c:661: heap_trim: Assertion `p->size == (0|0x1)' failed vapier at gentoo dot org
` (10 preceding siblings ...)
2012-09-10 5:42 ` vapier at gentoo dot org
@ 2012-09-10 17:59 ` dschepler at gmail dot com
2012-09-25 0:21 ` hjl.tools at gmail dot com
` (2 subsequent siblings)
14 siblings, 0 replies; 16+ messages in thread
From: dschepler at gmail dot com @ 2012-09-10 17:59 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=14562
Daniel Schepler <dschepler at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |dschepler at gmail dot com
--- Comment #11 from Daniel Schepler <dschepler at gmail dot com> 2012-09-10 17:59:14 UTC ---
(In reply to comment #9)
> Please try hjl/pr14562/2.16 branch.
As I already commented on the x32 list, for me this fixes among other things:
gij running ecj, and the GraphicsMagick, perl and pixman testsuites.
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* [Bug malloc/14562] threaded programs with x32 abi randomly crash with arena.c:661: heap_trim: Assertion `p->size == (0|0x1)' failed
2012-09-07 23:49 [Bug nptl/14562] New: threaded programs with x32 abi randomly crash with arena.c:661: heap_trim: Assertion `p->size == (0|0x1)' failed vapier at gentoo dot org
` (11 preceding siblings ...)
2012-09-10 17:59 ` dschepler at gmail dot com
@ 2012-09-25 0:21 ` hjl.tools at gmail dot com
2012-09-26 18:33 ` hjl.tools at gmail dot com
2014-06-25 6:48 ` fweimer at redhat dot com
14 siblings, 0 replies; 16+ messages in thread
From: hjl.tools at gmail dot com @ 2012-09-25 0:21 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=14562
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|WAITING |NEW
--- Comment #12 from H.J. Lu <hjl.tools at gmail dot com> 2012-09-25 00:20:53 UTC ---
Fixed in 2.17 by
http://sourceware.org/git/?p=glibc.git;a=commit;h=ced6f16ee919d12725840d43d007f1cfd67118df
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* [Bug malloc/14562] threaded programs with x32 abi randomly crash with arena.c:661: heap_trim: Assertion `p->size == (0|0x1)' failed
2012-09-07 23:49 [Bug nptl/14562] New: threaded programs with x32 abi randomly crash with arena.c:661: heap_trim: Assertion `p->size == (0|0x1)' failed vapier at gentoo dot org
` (12 preceding siblings ...)
2012-09-25 0:21 ` hjl.tools at gmail dot com
@ 2012-09-26 18:33 ` hjl.tools at gmail dot com
2014-06-25 6:48 ` fweimer at redhat dot com
14 siblings, 0 replies; 16+ messages in thread
From: hjl.tools at gmail dot com @ 2012-09-26 18:33 UTC (permalink / raw)
To: glibc-bugs
http://sourceware.org/bugzilla/show_bug.cgi?id=14562
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
--- Comment #13 from H.J. Lu <hjl.tools at gmail dot com> 2012-09-26 18:33:18 UTC ---
Fixed in 2.16.1 by
http://sourceware.org/git/?p=glibc.git;a=commit;h=bbe53ed2c311b7281837b6f3f24ddeb8f3d65697
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* [Bug malloc/14562] threaded programs with x32 abi randomly crash with arena.c:661: heap_trim: Assertion `p->size == (0|0x1)' failed
2012-09-07 23:49 [Bug nptl/14562] New: threaded programs with x32 abi randomly crash with arena.c:661: heap_trim: Assertion `p->size == (0|0x1)' failed vapier at gentoo dot org
` (13 preceding siblings ...)
2012-09-26 18:33 ` hjl.tools at gmail dot com
@ 2014-06-25 6:48 ` fweimer at redhat dot com
14 siblings, 0 replies; 16+ messages in thread
From: fweimer at redhat dot com @ 2014-06-25 6:48 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=14562
Florian Weimer <fweimer at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |fweimer at redhat dot com
Flags| |security-
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2012-09-07 23:49 [Bug nptl/14562] New: threaded programs with x32 abi randomly crash with arena.c:661: heap_trim: Assertion `p->size == (0|0x1)' failed vapier at gentoo dot org
2012-09-08 0:43 ` [Bug nptl/14562] " hjl.tools at gmail dot com
2012-09-08 1:03 ` hjl.tools at gmail dot com
2012-09-08 4:03 ` hjl.tools at gmail dot com
2012-09-08 14:04 ` [Bug malloc/14562] " hjl.tools at gmail dot com
2012-09-08 14:52 ` hjl.tools at gmail dot com
2012-09-08 15:30 ` hjl.tools at gmail dot com
2012-09-08 20:44 ` hjl.tools at gmail dot com
2012-09-08 20:48 ` hjl.tools at gmail dot com
2012-09-08 20:58 ` hjl.tools at gmail dot com
2012-09-09 18:30 ` hjl.tools at gmail dot com
2012-09-10 5:42 ` vapier at gentoo dot org
2012-09-10 17:59 ` dschepler at gmail dot com
2012-09-25 0:21 ` hjl.tools at gmail dot com
2012-09-26 18:33 ` hjl.tools at gmail dot com
2014-06-25 6:48 ` fweimer at redhat dot com
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