The ia64-specific clone2 call expects the base of the stack mapping and
the stack size as sep arguments, not an initial stack value as on other
stack-grows-down architectures. Reuse the stack-grows-up macro so we
pass in the right stack base.
Reported-by: Matt Turner <email address hidden>
(cherry picked from commit ddc3fb333469c2997798742dc0509dc1e3201d91)
(cherry picked from commit 27ab0d9518746dfb59ed2ba59daefc981dc10e38)
x86_64: fix static build of __mempcpy_chk for compilers defaulting to PIC/PIE
When glibc is compiled with gcc 6.2 that has been configured with
to default to PIC/PIE, the static version of __mempcpy_chk is not built,
as the test is done on PIC instead of SHARED. Fix the test to check for
SHARED, like it is done for similar functions like __memcpy_chk.
2017-03-12 Mike Frysinger <email address hidden>
* sysdeps/x86_64/mempcpy_chk.S (__mempcpy_chk): Check for SHARED
instead of PIC.
(cherry picked from commit fbe355fbd1973d6e29561084b3eaeb4bfe9d515a)
(cherry picked from commit 0889003c67f9c2f520a37281c4b5c3b8a9861f46)
This exposed a problem with the _dl_start_user function in the RTLD_START
define. We need to set __libc_stack_end before it is made read only. For
this, we need to define DL_STACK_END. The offset of 0x160 gives the same
stack end as the code in _dl_start_user.
sunrpc: Improvements for UDP client timeout handling [BZ #20257]
This commit fixes various aspects in the UDP client timeout handling.
Timeouts are now applied in a more consistent fashion. Discarded UDP
packets no longer prevent the timeout from happening at all.
(cherry picked from commit cf0bd2f73bd65beab613865bba567d7787836888)
(cherry picked from commit 93cf93e06ce123439e41d3d62790601c313134cb)
sunrpc: Avoid use-after-free read access in clntudp_call [BZ #21115]
After commit bc779a1a5b3035133024b21e2f339fe4219fb11c
(CVE-2016-4429: sunrpc: Do not use alloca in clntudp_call
[BZ #20112]), ancillary data is stored on the heap,
but it is accessed after it has been freed.
The test case must be run under a heap debugger such as valgrind
to observe the invalid access. A malloc implementation which
immediately calls munmap on free would catch this bug as well.
(cherry picked from commit d42eed4a044e5e10dfb885cf9891c2518a72a491)
(cherry picked from commit 045e368799cd253ddbf8bdec42ed92e8ebb3ce67)
0232af1...
by
Siddhesh Poyarekar <email address hidden>
Fix getting tunable values on big-endian (BZ #21109)
The code to set value passed a tunable_val_t, which when cast to
int32_t on big-endian gives the wrong value. Instead, use
tunable_val_t.numval instead, which can then be safely cast into
int32_t.
(cherry picked from commit 8cbc826c37c0221ada65a7a622fe079b4e89a4b0)
(cherry picked from commit 58520986c38e34db60e07260c64c563e3efcf353)
66b2d94...
by
"Stephanie J. Lockwood-Childs" <email address hidden>
gentoo: support running tests under sandbox
when glibc runs its tests, it does so by invoking the local library loader.
in Gentoo, we build/run inside of our "sandbox" which itself is linked against
libdl (so that it can load libraries and pull out symbols). the trouble
is that when you upgrade from an older glibc to the new one, often times
internal symbols change name or abi. this is normally OK as you cannot use
libc.so from say version 2.3.6 but libpthread.so from say version 2.5, so
we always say "keep all of the glibc libraries from the same build". but
when glibc runs its tests, it uses dynamic paths to point to its new local
copies of libraries. if the test doesnt use libdl, then glibc doesnt add
its path, and when sandbox triggers the loading of libdl, glibc does so
from the host system system. this gets us into the case of all libraries
are from the locally compiled version of glibc except for libdl.so.
