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From: Mark W. <ma...@so...> - 2021-02-03 18:51:20
|
https://sourceware.org/git/gitweb.cgi?p=valgrind.git;h=7ada4d26d7cd3eb14904a398e6646f8b4e7d8a64 commit 7ada4d26d7cd3eb14904a398e6646f8b4e7d8a64 Author: Mark Wielaard <ma...@kl...> Date: Wed Feb 3 16:56:14 2021 +0100 syswrap-linux.c: Pass implicit VKI_IPC_64 for shmctl also on arm64. The shmctl syscall on amd64, arm64 and riscv (but we don't have a port for that last one) always use IPC_64. Explicitly pass it to the generic PRE/POST handlers so they select the correct (64bit) data structures on those architectures. https://bugzilla.redhat.com/show_bug.cgi?id=1909548 Diff: --- coregrind/m_syswrap/syswrap-linux.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/coregrind/m_syswrap/syswrap-linux.c b/coregrind/m_syswrap/syswrap-linux.c index 328e02a980..52074149d7 100644 --- a/coregrind/m_syswrap/syswrap-linux.c +++ b/coregrind/m_syswrap/syswrap-linux.c @@ -5127,7 +5127,7 @@ PRE(sys_shmctl) PRINT("sys_shmctl ( %ld, %ld, %#" FMT_REGWORD "x )", SARG1, SARG2, ARG3); PRE_REG_READ3(long, "shmctl", int, shmid, int, cmd, struct shmid_ds *, buf); -#ifdef VGP_amd64_linux +#if defined(VGP_amd64_linux) || defined(VGP_arm64_linux) ML_(generic_PRE_sys_shmctl)(tid, ARG1,ARG2|VKI_IPC_64,ARG3); #else ML_(generic_PRE_sys_shmctl)(tid, ARG1,ARG2,ARG3); @@ -5136,7 +5136,7 @@ PRE(sys_shmctl) POST(sys_shmctl) { -#ifdef VGP_amd64_linux +#if defined(VGP_amd64_linux) || defined(VGP_arm64_linux) ML_(generic_POST_sys_shmctl)(tid, RES,ARG1,ARG2|VKI_IPC_64,ARG3); #else ML_(generic_POST_sys_shmctl)(tid, RES,ARG1,ARG2,ARG3); |
|
From: Mark W. <ma...@so...> - 2021-02-03 18:51:08
|
https://sourceware.org/git/gitweb.cgi?p=valgrind.git;h=889bffd9860337720a00cce888648b2262177ff2 commit 889bffd9860337720a00cce888648b2262177ff2 Author: Anssi Hannula <ans...@bi...> Date: Thu Jul 2 14:49:17 2020 +0300 Fix shmat() on Linux nanomips and x86 On Linux, there are two variants of the direct shmctl syscall: - sys_shmctl: always uses shmid64_ds, does not accept IPC_64 - sys_old_shmctl: uses shmid_ds or shmid64_ds depending on IPC_64 The following Linux ABIs have the sys_old_shmctl variant: alpha, arm, microblaze, mips n32/n64, xtensa Other ABIs (and future ABIs) have the sys_shmctl variant, including ABIs that only got sys_shmctl in Linux 5.1 (such as x86, mips o32, ppc, s390x). We incorrectly assume the sys_old_shmctl variant on nanomips and x86, causing shmat() calls under valgrind to fail with EINVAL. On x86, the issue was previously masked by the non-existence of __NR_shmctl until a9fc7bceeb0b0 ("Update Linux x86 system call number definitions") in 2019. On mips o32, ppc, and s390x this issue is not visible as our headers do not have __NR_shmctl for those ABIs (396 since Linux 5.1). Fix the issue by correcting the preprocessor check in get_shm_size() to only assume the old Linux sys_old_shmctl behavior on the specific affected platforms. Also, exclude the use of direct shmctl entirely on Linux x86, ppc, mips o32, s390x in order to keep compatibility with pre-5.1 kernel versions that did not yet have direct shmctl for those ABIs. This currently only has actual effect on x86 as only it has __NR_shmctl in our headers. Fixes tests mremap4, mremap5, mremap6. https://bugs.kde.org/show_bug.cgi?id=410743 Diff: --- NEWS | 2 ++ coregrind/m_syswrap/syswrap-generic.c | 22 +++++++++++++++++++--- 2 files changed, 21 insertions(+), 3 deletions(-) diff --git a/NEWS b/NEWS index c1de304ee7..e196e8fecd 100644 --- a/NEWS +++ b/NEWS @@ -59,6 +59,8 @@ n-i-bz helgrind: If hg_cli__realloc fails, return NULL. 397605 ioctl FICLONE mishandled 408663 Suppression file for musl libc 404076 s390x: z14 vector instructions not implemented +410743 shmat() calls for 32-bit programs fail when running in 64-bit valgrind + (actually affected all x86 and nanomips regardless of host bitness) 415293 Incorrect call-graph tracking due to new _dl_runtime_resolve_xsave* 422174 unhandled instruction bytes: 0x48 0xE9 (REX prefixed JMP instruction) 422623 epoll_ctl warns for uninitialized padding on non-amd64 64bit arches diff --git a/coregrind/m_syswrap/syswrap-generic.c b/coregrind/m_syswrap/syswrap-generic.c index badb8c778d..7d4b385a38 100644 --- a/coregrind/m_syswrap/syswrap-generic.c +++ b/coregrind/m_syswrap/syswrap-generic.c @@ -1960,11 +1960,27 @@ ML_(generic_POST_sys_semctl) ( ThreadId tid, static SizeT get_shm_size ( Int shmid ) { -#if defined(__NR_shmctl) + /* + * The excluded platforms below gained direct shmctl in Linux 5.1. Keep + * using ipc-multiplexed shmctl to keep compatibility with older kernel + * versions. + */ +#if defined(__NR_shmctl) && \ + !defined(VGP_x86_linux) && !defined(VGP_mips32_linux) && \ + !defined(VGP_ppc32_linux) && !defined(VGP_ppc64be_linux) && \ + !defined(VGP_ppc64le_linux) && !defined(VGP_s390x_linux) # ifdef VKI_IPC_64 struct vki_shmid64_ds buf; -# if defined(VGP_amd64_linux) || defined(VGP_arm64_linux) - /* See bug 222545 comment 7 */ + /* + * On Linux, the following ABIs use old shmid_ds by default with direct + * shmctl and require IPC_64 for shmid64_ds (i.e. the direct syscall is + * mapped to sys_old_shmctl): + * alpha, arm, microblaze, mips n32/n64, xtensa + * Other Linux ABIs use shmid64_ds by default and do not recognize IPC_64 + * with the direct shmctl syscall (but still recognize it for the + * ipc-multiplexed version if that exists for the ABI). + */ +# if defined(VGO_linux) && !defined(VGP_arm_linux) && !defined(VGP_mips64_linux) SysRes __res = VG_(do_syscall3)(__NR_shmctl, shmid, VKI_IPC_STAT, (UWord)&buf); # else |
|
From: Mark W. <ma...@so...> - 2021-02-01 22:26:54
|
https://sourceware.org/git/gitweb.cgi?p=valgrind.git;h=d42a89fc9a4f90af07d93fe040c288b11f1d06ae commit d42a89fc9a4f90af07d93fe040c288b11f1d06ae Author: Mark Wielaard <ma...@kl...> Date: Mon Feb 1 22:46:43 2021 +0100 Handle Iop_NegF16, Iop_AbsF16 and Iop_SqrtF16 as non-trapping. Add Iop_NegF16, Iop_AbsF16 and Iop_SqrtF16 to VEX/priv/ir_defs.c primopMightTrap. Also rewrite case statement slightly so GCC will warn if an enumeration value is missed. Diff: --- VEX/priv/ir_defs.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/VEX/priv/ir_defs.c b/VEX/priv/ir_defs.c index 9940903b3a..1b8cffb771 100644 --- a/VEX/priv/ir_defs.c +++ b/VEX/priv/ir_defs.c @@ -1410,6 +1410,7 @@ Bool primopMightTrap ( IROp op ) case Iop_AddF64r32: case Iop_SubF64r32: case Iop_MulF64r32: case Iop_DivF64r32: case Iop_NegF64: case Iop_AbsF64: case Iop_NegF32: case Iop_AbsF32: case Iop_SqrtF64: case Iop_SqrtF32: + case Iop_NegF16: case Iop_AbsF16: case Iop_SqrtF16: case Iop_CmpF64: case Iop_CmpF32: case Iop_CmpF128: case Iop_F64toI16S: case Iop_F64toI32S: case Iop_F64toI64S: case Iop_F64toI64U: case Iop_F64toI32U: case Iop_I32StoF64: case Iop_I64StoF64: @@ -1773,10 +1774,12 @@ Bool primopMightTrap ( IROp op ) case Iop_Rotx32: case Iop_Rotx64: return False; - default: - vpanic("primopMightTrap"); + case Iop_INVALID: case Iop_LAST: + vpanic("primopMightTrap INVALID, LAST"); } + + vpanic("primopMightTrap"); } void ppIRExpr ( const IRExpr* e ) |