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Re: [PATCH 2/4] Add a signal-safe malloc replacement

On Wed, Dec 18, 2013 at 4:12 PM, Paul Pluzhnikov <> wrote:
> On Wed, Dec 18, 2013 at 4:06 PM, Andrew Hunter <> wrote:
>> I think the proper fix is to reorder the patches -- move Factor out
>> _dl_clear_dtv before this one (having it just call free, not
>> signal_safe_).  Then apply this patch and replace the free with
>> signal_safe_free here.)
> Aha. I haven't looked at patch 3 (until now).
> I agree, applying slightly modified patch 3, then patch 2, is the way to go.
> I'll test and commit in that order.

Tested attached patch on Linux/x86_64 and i686.
Committed as 1f33d36a8a9e78c81bed59b47f260723f56bb7e6

Paul Pluzhnikov

2013-12-18  Andrew Hunter  <>

	* sysdeps/generic/ldsodefs.h (__signal_safe_memalign): New prototype.
	(__signal_safe_malloc, __signal_safe_free): Likewise.
	(__signal_safe_realloc, __signal_safe_calloc): Likewise.
	* elf/dl-misc.c (__signal_safe_allocator_header): New struct.
	(__signal_safe_memalign, __signal_safe_malloc): New function.
	(__signal_safe_free, __signal_safe_realloc): Likewise.
	(__signal_safe_calloc): Likewise.
	* elf/dl-tls.c (allocate_dtv, _dl_clear_dtv): Call signal-safe
	(_dl_deallocate_tls, _dl_update_slotinfo): Likewise.

Attachment: ahh-glibc-20131210.2a.txt
Description: Text document

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