diff options
author | Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com> | 2017-04-25 13:24:52 -0300 |
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committer | Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com> | 2017-04-25 13:24:52 -0300 |
commit | 3af49a0209bef32ba03b78ea3b7256584964d981 (patch) | |
tree | 75c4144cc911a7200975dcbc7549ce0cff3a3431 | |
parent | 5939404d49f116302c2ecc773bb6a7495ddb23bf (diff) | |
parent | b2e8c40afcb83f9a6dbbb543ce0951b6c890d350 (diff) | |
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Merge branch release/2.24/master into ibm/2.24/master
-rw-r--r-- | ChangeLog | 65 | ||||
-rw-r--r-- | NEWS | 9 | ||||
-rw-r--r-- | include/arpa/nameser_compat.h | 6 | ||||
-rw-r--r-- | io/fts.h | 2 | ||||
-rw-r--r-- | resolv/Makefile | 5 | ||||
-rw-r--r-- | resolv/nss_dns/dns-host.c | 2 | ||||
-rw-r--r-- | resolv/res_mkquery.c | 4 | ||||
-rw-r--r-- | resolv/res_query.c | 6 | ||||
-rw-r--r-- | resolv/tst-resolv-qtypes.c | 185 | ||||
-rw-r--r-- | sysdeps/hppa/dl-machine.h | 9 | ||||
-rw-r--r-- | sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list | 2 | ||||
-rw-r--r-- | sysdeps/unix/sysv/linux/spawni.c | 16 | ||||
-rw-r--r-- | sysdeps/x86_64/dl-trampoline.S | 3 | ||||
-rw-r--r-- | sysdeps/x86_64/dl-trampoline.h | 9 | ||||
-rw-r--r-- | sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S | 2 | ||||
-rw-r--r-- | sysdeps/x86_64/sysdep.h | 3 |
16 files changed, 303 insertions, 25 deletions
@@ -1,3 +1,68 @@ +2017-01-05 Joseph Myers <joseph@codesourcery.com> + + [BZ #21026] + * sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list + (readahead): New syscall entry. + +2017-04-07 H.J. Lu <hongjiu.lu@intel.com> + + [BZ #21258] + * sysdeps/x86_64/dl-trampoline.S (_dl_runtime_resolve_opt): + Define only if _dl_runtime_resolve is defined to + _dl_runtime_resolve_sse_vex. + * sysdeps/x86_64/dl-trampoline.h (_dl_runtime_resolve_opt): + Fallthrough to _dl_runtime_resolve_sse_vex. + +2017-04-03 Mike Frysinger <vapier@gentoo.org> + + [BZ #21253] + * sysdeps/unix/sysv/linux/spawni.c (__spawnix): Increase argv_size + slack space by 32KiB. + +2017-03-31 Slava Barinov <v.barinov@samsung.com> + + [BZ #21289] + * io/fts.h (fts_set): Replace __REDIRECT with __REDIRECT_NTH. + +2017-03-20 Mike Frysinger <vapier@gentoo.org> + + [BZ #21275] + * sysdeps/unix/sysv/linux/spawni.c [__ia64__] (CLONE): Rename + __stack to __stackbase. + (STACK): Invert _STACK_GROWS_DOWN and _STACK_GROWS_UP order of + checks so we can include defined(__ia64__) first. + +2017-03-15 John David Anglin <danglin@gcc.gnu.org> + + * sysdeps/hppa/dl-machine.h (DL_STACK_END): Define. + (RTLD_START): Don't record stack end address in _dl_start_user. + +2017-01-30 H.J. Lu <hongjiu.lu@intel.com> + + [BZ #21081] + * sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S + (L(stosb)): Add VZEROUPPER before ret. + +2016-11-28 H.J. Lu <hongjiu.lu@intel.com> + + [BZ #20750] + * sysdeps/x86_64/sysdep.h (JUMPTARGET): Check SHARED instead + of PIC. + +2016-12-31 Florian Weimer <fweimer@redhat.com> + + [BZ #18784] + CVE-2015-5180 + * include/arpa/nameser_compat.h (T_QUERY_A_AND_AAAA): Rename from + T_UNSPEC. Adjust value. + * resolv/nss_dns/dns-host.c (_nss_dns_gethostbyname4_r): Use it. + * resolv/res_query.c (__libc_res_nquery): Likewise. + * resolv/res_mkquery.c (res_nmkquery): Check for out-of-range + QTYPEs. + * resolv/tst-resolv-qtypes.c: New file. + * resolv/Makefile (xtests): Add tst-resolv-qtypes. + (tst-resolv-qtypes): Link against libresolv and libpthread. + 2017-02-02 Siddhesh Poyarekar <siddhesh@sourceware.org> * sysdeps/generic/unsecvars.h: Add GLIBC_TUNABLES. @@ -15,6 +15,15 @@ Security related changes: (denial of service) in some Go applications compiled with gccgo. Reported by Andreas Schwab. (CVE-2016-6323) +* The DNS stub resolver functions would crash due to a NULL pointer + dereference when processing a query with a valid DNS question type which + was used internally in the implementation. The stub resolver now uses a + question type which is outside the range of valid question type values. + (CVE-2015-5180) + +The following bugs are resolved with this release: + + [21289] Fix symbol redirect for fts_set Version 2.24 diff --git a/include/arpa/nameser_compat.h b/include/arpa/nameser_compat.h index 2e735ede4c..7c0deed9ae 100644 --- a/include/arpa/nameser_compat.h +++ b/include/arpa/nameser_compat.h @@ -1,8 +1,8 @@ #ifndef _ARPA_NAMESER_COMPAT_ #include <resolv/arpa/nameser_compat.h> -/* Picksome unused number to represent lookups of IPv4 and IPv6 (i.e., - T_A and T_AAAA). */ -#define T_UNSPEC 62321 +/* The number is outside the 16-bit RR type range and is used + internally by the implementation. */ +#define T_QUERY_A_AND_AAAA 439963904 #endif @@ -193,7 +193,7 @@ FTS *__REDIRECT (fts_open, (char * const *, int, int (*)(const FTSENT **, const FTSENT **)), fts64_open); FTSENT *__REDIRECT (fts_read, (FTS *), fts64_read); -int __REDIRECT (fts_set, (FTS *, FTSENT *, int), fts64_set) __THROW; +int __REDIRECT_NTH (fts_set, (FTS *, FTSENT *, int), fts64_set); # else # define fts_children fts64_children # define fts_close fts64_close diff --git a/resolv/Makefile b/resolv/Makefile index 8be41d3ae1..a4c86b9762 100644 --- a/resolv/Makefile +++ b/resolv/Makefile @@ -40,6 +40,9 @@ ifeq ($(have-thread-library),yes) extra-libs += libanl routines += gai_sigqueue tests += tst-res_hconf_reorder + +# This test sends millions of packets and is rather slow. +xtests += tst-resolv-qtypes endif extra-libs-others = $(extra-libs) libresolv-routines := gethnamaddr res_comp res_debug \ @@ -117,3 +120,5 @@ tst-leaks2-ENV = MALLOC_TRACE=$(objpfx)tst-leaks2.mtrace $(objpfx)mtrace-tst-leaks2.out: $(objpfx)tst-leaks2.out $(common-objpfx)malloc/mtrace $(objpfx)tst-leaks2.mtrace > $@; \ $(evaluate-test) + +$(objpfx)tst-resolv-qtypes: $(objpfx)libresolv.so $(shared-thread-library) diff --git a/resolv/nss_dns/dns-host.c b/resolv/nss_dns/dns-host.c index 5f9e35701b..d16fa4b8ed 100644 --- a/resolv/nss_dns/dns-host.c +++ b/resolv/nss_dns/dns-host.c @@ -323,7 +323,7 @@ _nss_dns_gethostbyname4_r (const char *name, struct gaih_addrtuple **pat, int olderr = errno; enum nss_status status; - int n = __libc_res_nsearch (&_res, name, C_IN, T_UNSPEC, + int n = __libc_res_nsearch (&_res, name, C_IN, T_QUERY_A_AND_AAAA, host_buffer.buf->buf, 2048, &host_buffer.ptr, &ans2p, &nans2p, &resplen2, &ans2p_malloced); if (n >= 0) diff --git a/resolv/res_mkquery.c b/resolv/res_mkquery.c index 12f9730199..d80b5318e5 100644 --- a/resolv/res_mkquery.c +++ b/resolv/res_mkquery.c @@ -103,6 +103,10 @@ res_nmkquery(res_state statp, int n; u_char *dnptrs[20], **dpp, **lastdnptr; + if (class < 0 || class > 65535 + || type < 0 || type > 65535) + return -1; + #ifdef DEBUG if (statp->options & RES_DEBUG) printf(";; res_nmkquery(%s, %s, %s, %s)\n", diff --git a/resolv/res_query.c b/resolv/res_query.c index 944d1a90f5..07dc6f6583 100644 --- a/resolv/res_query.c +++ b/resolv/res_query.c @@ -122,7 +122,7 @@ __libc_res_nquery(res_state statp, int n, use_malloc = 0; u_int oflags = statp->_flags; - size_t bufsize = (type == T_UNSPEC ? 2 : 1) * QUERYSIZE; + size_t bufsize = (type == T_QUERY_A_AND_AAAA ? 2 : 1) * QUERYSIZE; u_char *buf = alloca (bufsize); u_char *query1 = buf; int nquery1 = -1; @@ -137,7 +137,7 @@ __libc_res_nquery(res_state statp, printf(";; res_query(%s, %d, %d)\n", name, class, type); #endif - if (type == T_UNSPEC) + if (type == T_QUERY_A_AND_AAAA) { n = res_nmkquery(statp, QUERY, name, class, T_A, NULL, 0, NULL, query1, bufsize); @@ -190,7 +190,7 @@ __libc_res_nquery(res_state statp, if (__builtin_expect (n <= 0, 0) && !use_malloc) { /* Retry just in case res_nmkquery failed because of too short buffer. Shouldn't happen. */ - bufsize = (type == T_UNSPEC ? 2 : 1) * MAXPACKET; + bufsize = (type == T_QUERY_A_AND_AAAA ? 2 : 1) * MAXPACKET; buf = malloc (bufsize); if (buf != NULL) { query1 = buf; diff --git a/resolv/tst-resolv-qtypes.c b/resolv/tst-resolv-qtypes.c new file mode 100644 index 0000000000..b3e60c693b --- /dev/null +++ b/resolv/tst-resolv-qtypes.c @@ -0,0 +1,185 @@ +/* Exercise low-level query functions with different QTYPEs. + Copyright (C) 2016 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <resolv.h> +#include <string.h> +#include <support/check.h> +#include <support/check_nss.h> +#include <support/resolv_test.h> +#include <support/support.h> +#include <support/test-driver.h> +#include <support/xmemstream.h> + +/* If ture, the response function will send the actual response packet + over TCP instead of UDP. */ +static volatile bool force_tcp; + +/* Send back a fake resource record matching the QTYPE. */ +static void +response (const struct resolv_response_context *ctx, + struct resolv_response_builder *b, + const char *qname, uint16_t qclass, uint16_t qtype) +{ + if (force_tcp && ctx->tcp) + { + resolv_response_init (b, (struct resolv_response_flags) { .tc = 1 }); + resolv_response_add_question (b, qname, qclass, qtype); + return; + } + + resolv_response_init (b, (struct resolv_response_flags) { }); + resolv_response_add_question (b, qname, qclass, qtype); + resolv_response_section (b, ns_s_an); + resolv_response_open_record (b, qname, qclass, qtype, 0); + resolv_response_add_data (b, &qtype, sizeof (qtype)); + resolv_response_close_record (b); +} + +static const const char *domain = "www.example.com"; + +static int +wrap_res_query (int type, unsigned char *answer, int answer_length) +{ + return res_query (domain, C_IN, type, answer, answer_length); +} + +static int +wrap_res_search (int type, unsigned char *answer, int answer_length) +{ + return res_query (domain, C_IN, type, answer, answer_length); +} + +static int +wrap_res_querydomain (int type, unsigned char *answer, int answer_length) +{ + return res_querydomain ("www", "example.com", C_IN, type, + answer, answer_length); +} + +static int +wrap_res_send (int type, unsigned char *answer, int answer_length) +{ + unsigned char buf[512]; + int ret = res_mkquery (QUERY, domain, C_IN, type, + (const unsigned char *) "", 0, NULL, + buf, sizeof (buf)); + if (type < 0 || type >= 65536) + { + /* res_mkquery fails for out-of-range record types. */ + TEST_VERIFY_EXIT (ret == -1); + return -1; + } + TEST_VERIFY_EXIT (ret > 12); /* DNS header length. */ + return res_send (buf, ret, answer, answer_length); +} + +static int +wrap_res_nquery (int type, unsigned char *answer, int answer_length) +{ + return res_nquery (&_res, domain, C_IN, type, answer, answer_length); +} + +static int +wrap_res_nsearch (int type, unsigned char *answer, int answer_length) +{ + return res_nquery (&_res, domain, C_IN, type, answer, answer_length); +} + +static int +wrap_res_nquerydomain (int type, unsigned char *answer, int answer_length) +{ + return res_nquerydomain (&_res, "www", "example.com", C_IN, type, + answer, answer_length); +} + +static int +wrap_res_nsend (int type, unsigned char *answer, int answer_length) +{ + unsigned char buf[512]; + int ret = res_nmkquery (&_res, QUERY, domain, C_IN, type, + (const unsigned char *) "", 0, NULL, + buf, sizeof (buf)); + if (type < 0 || type >= 65536) + { + /* res_mkquery fails for out-of-range record types. */ + TEST_VERIFY_EXIT (ret == -1); + return -1; + } + TEST_VERIFY_EXIT (ret > 12); /* DNS header length. */ + return res_nsend (&_res, buf, ret, answer, answer_length); +} + +static void +test_function (const char *fname, + int (*func) (int type, + unsigned char *answer, int answer_length)) +{ + unsigned char buf[512]; + for (int tcp = 0; tcp < 2; ++tcp) + { + force_tcp = tcp; + for (unsigned int type = 1; type <= 65535; ++type) + { + if (test_verbose) + printf ("info: sending QTYPE %d with %s (tcp=%d)\n", + type, fname, tcp); + int ret = func (type, buf, sizeof (buf)); + if (ret != 47) + FAIL_EXIT1 ("%s tcp=%d qtype=%d return value %d", + fname,tcp, type, ret); + /* One question, one answer record. */ + TEST_VERIFY (memcmp (buf + 4, "\0\1\0\1\0\0\0\0", 8) == 0); + /* Question section. */ + static const char qname[] = "\3www\7example\3com"; + size_t qname_length = sizeof (qname); + TEST_VERIFY (memcmp (buf + 12, qname, qname_length) == 0); + /* RDATA part of answer. */ + uint16_t type16 = type; + TEST_VERIFY (memcmp (buf + ret - 2, &type16, sizeof (type16)) == 0); + } + } + + TEST_VERIFY (func (-1, buf, sizeof (buf) == -1)); + TEST_VERIFY (func (65536, buf, sizeof (buf) == -1)); +} + +static int +do_test (void) +{ + struct resolv_redirect_config config = + { + .response_callback = response, + }; + struct resolv_test *obj = resolv_test_start (config); + + test_function ("res_query", &wrap_res_query); + test_function ("res_search", &wrap_res_search); + test_function ("res_querydomain", &wrap_res_querydomain); + test_function ("res_send", &wrap_res_send); + + test_function ("res_nquery", &wrap_res_nquery); + test_function ("res_nsearch", &wrap_res_nsearch); + test_function ("res_nquerydomain", &wrap_res_nquerydomain); + test_function ("res_nsend", &wrap_res_nsend); + + resolv_test_end (obj); + return 0; +} + +#define TIMEOUT 300 +#include <support/test-driver.c> diff --git a/sysdeps/hppa/dl-machine.h b/sysdeps/hppa/dl-machine.h index 9404211819..01bd5bf197 100644 --- a/sysdeps/hppa/dl-machine.h +++ b/sysdeps/hppa/dl-machine.h @@ -302,6 +302,10 @@ elf_machine_runtime_setup (struct link_map *l, int lazy, int profile) #define ARCH_LA_PLTENTER hppa_gnu_pltenter #define ARCH_LA_PLTEXIT hppa_gnu_pltexit +/* Adjust DL_STACK_END to get value we want in __libc_stack_end. */ +#define DL_STACK_END(cookie) \ + ((void *) (((long) (cookie)) + 0x160)) + /* Initial entry point code for the dynamic linker. The C function `_dl_start' is the real entry point; its return value is the user program's entry point. */ @@ -401,11 +405,6 @@ asm ( \ /* Save the entry point in %r3. */ \ " copy %ret0,%r3\n" \ \ - /* Remember the lowest stack address. */ \ -" addil LT'__libc_stack_end,%r19\n" \ -" ldw RT'__libc_stack_end(%r1),%r20\n" \ -" stw %sp,0(%r20)\n" \ - \ /* See if we were called as a command with the executable file \ name as an extra leading argument. */ \ " addil LT'_dl_skip_args,%r19\n" \ diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list b/sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list index 890a74494a..26ab6d0b75 100644 --- a/sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list +++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/syscalls.list @@ -4,6 +4,8 @@ mmap - mmap b:aniiii __mmap mmap __mmap64 mmap64 sync_file_range - sync_file_range Ci:iiii sync_file_range +readahead - readahead i:iii __readahead readahead + prlimit EXTRA prlimit64 i:iipp prlimit prlimit64 fanotify_mark EXTRA fanotify_mark i:iiiis fanotify_mark diff --git a/sysdeps/unix/sysv/linux/spawni.c b/sysdeps/unix/sysv/linux/spawni.c index 67e1c42426..b5f20a710b 100644 --- a/sysdeps/unix/sysv/linux/spawni.c +++ b/sysdeps/unix/sysv/linux/spawni.c @@ -59,17 +59,18 @@ #define SPAWN_ERROR 127 #ifdef __ia64__ -# define CLONE(__fn, __stack, __stacksize, __flags, __args) \ - __clone2 (__fn, __stack, __stacksize, __flags, __args, 0, 0, 0) +# define CLONE(__fn, __stackbase, __stacksize, __flags, __args) \ + __clone2 (__fn, __stackbase, __stacksize, __flags, __args, 0, 0, 0) #else # define CLONE(__fn, __stack, __stacksize, __flags, __args) \ __clone (__fn, __stack, __flags, __args) #endif -#if _STACK_GROWS_DOWN -# define STACK(__stack, __stack_size) (__stack + __stack_size) -#elif _STACK_GROWS_UP +/* Since ia64 wants the stackbase w/clone2, re-use the grows-up macro. */ +#if _STACK_GROWS_UP || defined (__ia64__) # define STACK(__stack, __stack_size) (__stack) +#elif _STACK_GROWS_DOWN +# define STACK(__stack, __stack_size) (__stack + __stack_size) #endif @@ -325,6 +326,11 @@ __spawnix (pid_t * pid, const char *file, /* Add a slack area for child's stack. */ size_t argv_size = (argc * sizeof (void *)) + 512; + /* We need at least a few pages in case the compiler's stack checking is + enabled. In some configs, it is known to use at least 24KiB. We use + 32KiB to be "safe" from anything the compiler might do. Besides, the + extra pages won't actually be allocated unless they get used. */ + argv_size += (32 * 1024); size_t stack_size = ALIGN_UP (argv_size, GLRO(dl_pagesize)); void *stack = __mmap (NULL, stack_size, prot, MAP_PRIVATE | MAP_ANONYMOUS | MAP_STACK, -1, 0); diff --git a/sysdeps/x86_64/dl-trampoline.S b/sysdeps/x86_64/dl-trampoline.S index 39f595e1e1..50b23633e3 100644 --- a/sysdeps/x86_64/dl-trampoline.S +++ b/sysdeps/x86_64/dl-trampoline.S @@ -87,11 +87,9 @@ #endif #define VEC(i) zmm##i #define _dl_runtime_resolve _dl_runtime_resolve_avx512 -#define _dl_runtime_resolve_opt _dl_runtime_resolve_avx512_opt #define _dl_runtime_profile _dl_runtime_profile_avx512 #include "dl-trampoline.h" #undef _dl_runtime_resolve -#undef _dl_runtime_resolve_opt #undef _dl_runtime_profile #undef VEC #undef VMOV @@ -145,4 +143,5 @@ # define VMOV vmovdqu #endif #define _dl_runtime_resolve _dl_runtime_resolve_sse_vex +#define _dl_runtime_resolve_opt _dl_runtime_resolve_avx512_opt #include "dl-trampoline.h" diff --git a/sysdeps/x86_64/dl-trampoline.h b/sysdeps/x86_64/dl-trampoline.h index abe4471c1d..32ad3af202 100644 --- a/sysdeps/x86_64/dl-trampoline.h +++ b/sysdeps/x86_64/dl-trampoline.h @@ -129,19 +129,20 @@ _dl_runtime_resolve_opt: # YMM state isn't in use. PRESERVE_BND_REGS_PREFIX jz _dl_runtime_resolve_sse_vex -# elif VEC_SIZE == 64 +# elif VEC_SIZE == 16 # For ZMM registers, check if YMM state and ZMM state are in # use. andl $(bit_YMM_state | bit_ZMM0_15_state), %r11d cmpl $bit_YMM_state, %r11d - # Preserve %xmm0 - %xmm7 registers with the zero upper 384 bits if - # neither YMM state nor ZMM state are in use. + # Preserve %zmm0 - %zmm7 registers if ZMM state is in use. PRESERVE_BND_REGS_PREFIX - jl _dl_runtime_resolve_sse_vex + jg _dl_runtime_resolve_avx512 # Preserve %ymm0 - %ymm7 registers with the zero upper 256 bits if # ZMM state isn't in use. PRESERVE_BND_REGS_PREFIX je _dl_runtime_resolve_avx + # Preserve %xmm0 - %xmm7 registers with the zero upper 384 bits if + # neither YMM state nor ZMM state are in use. # else # error Unsupported VEC_SIZE! # endif diff --git a/sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S b/sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S index 28e71fd576..acf448c9a6 100644 --- a/sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S +++ b/sysdeps/x86_64/multiarch/memset-vec-unaligned-erms.S @@ -110,6 +110,8 @@ ENTRY (__memset_erms) ENTRY (MEMSET_SYMBOL (__memset, erms)) # endif L(stosb): + /* Issue vzeroupper before rep stosb. */ + VZEROUPPER movq %rdx, %rcx movzbl %sil, %eax movq %rdi, %rdx diff --git a/sysdeps/x86_64/sysdep.h b/sysdeps/x86_64/sysdep.h index 75ac747be8..4b67fa80c1 100644 --- a/sysdeps/x86_64/sysdep.h +++ b/sysdeps/x86_64/sysdep.h @@ -89,13 +89,14 @@ lose: \ END (name) #undef JUMPTARGET -#ifdef PIC +#ifdef SHARED # ifdef BIND_NOW # define JUMPTARGET(name) *name##@GOTPCREL(%rip) # else # define JUMPTARGET(name) name##@PLT # endif #else +/* For static archives, branch to target directly. */ # define JUMPTARGET(name) name #endif |