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3.16.1-17 - Add valgrind-3.16.1-open-proc-self-exe.patch

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This commit is contained in:
Mark Wielaard 2021-02-06 22:17:36 +01:00
parent 511be3b3d2
commit 4d61a87974
2 changed files with 80 additions and 1 deletions
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71
valgrind-3.16.1-open-proc-self-exe.patch Normal file
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@ -0,0 +1,71 @@
diff --git a/coregrind/m_syswrap/priv_syswrap-generic.h b/coregrind/m_syswrap/priv_syswrap-generic.h
index 4717abac6..c50b31399 100644
--- a/coregrind/m_syswrap/priv_syswrap-generic.h
+++ b/coregrind/m_syswrap/priv_syswrap-generic.h
@@ -106,6 +106,10 @@ extern Bool
ML_(handle_auxv_open)(SyscallStatus *status, const HChar *filename,
int flags);
+extern Bool
+ML_(handle_self_exe_open)(SyscallStatus *status, const HChar *filename,
+ int flags);
+
/* Helper function for generic mprotect and linux pkey_mprotect. */
extern void handle_sys_mprotect (ThreadId tid, SyscallStatus *status,
Addr *addr, SizeT *len, Int *prot);
diff --git a/coregrind/m_syswrap/syswrap-generic.c b/coregrind/m_syswrap/syswrap-generic.c
index 7d4b385a3..3810f7474 100644
--- a/coregrind/m_syswrap/syswrap-generic.c
+++ b/coregrind/m_syswrap/syswrap-generic.c
@@ -4078,6 +4078,38 @@ Bool ML_(handle_auxv_open)(SyscallStatus *status, const HChar *filename,
}
#endif // defined(VGO_linux) || defined(VGO_solaris)
+#if defined(VGO_linux)
+Bool ML_(handle_self_exe_open)(SyscallStatus *status, const HChar *filename,
+ int flags)
+{
+ HChar name[30]; // large enough for /proc/<int>/exe
+
+ if (!ML_(safe_to_deref)((const void *) filename, 1))
+ return False;
+
+ /* Opening /proc/<pid>/exe or /proc/self/exe? */
+ VG_(sprintf)(name, "/proc/%d/exe", VG_(getpid)());
+ if (!VG_STREQ(filename, name) && !VG_STREQ(filename, "/proc/self/exe"))
+ return False;
+
+ /* Allow to open the file only for reading. */
+ if (flags & (VKI_O_WRONLY | VKI_O_RDWR)) {
+ SET_STATUS_Failure(VKI_EACCES);
+ return True;
+ }
+
+ SysRes sres = VG_(dup)(VG_(cl_exec_fd));
+ SET_STATUS_from_SysRes(sres);
+ if (!sr_isError(sres)) {
+ OffT off = VG_(lseek)(sr_Res(sres), 0, VKI_SEEK_SET);
+ if (off < 0)
+ SET_STATUS_Failure(VKI_EMFILE);
+ }
+
+ return True;
+}
+#endif // defined(VGO_linux)
+
PRE(sys_open)
{
if (ARG2 & VKI_O_CREAT) {
@@ -4119,8 +4151,10 @@ PRE(sys_open)
}
}
- /* Handle also the case of /proc/self/auxv or /proc/<pid>/auxv. */
- if (ML_(handle_auxv_open)(status, (const HChar *)(Addr)ARG1, ARG2))
+ /* Handle also the case of /proc/self/auxv or /proc/<pid>/auxv
+ or /proc/self/exe or /proc/<pid>/exe. */
+ if (ML_(handle_auxv_open)(status, (const HChar *)(Addr)ARG1, ARG2)
+ || ML_(handle_self_exe_open)(status, (const HChar *)(Addr)ARG1, ARG2))
return;
#endif // defined(VGO_linux)

10
valgrind.spec
View File

@ -3,7 +3,7 @@
Summary: Tool for finding memory management bugs in programs
Name: %{?scl_prefix}valgrind
Version: 3.16.1
Release: 16%{?dist}
Release: 17%{?dist}
Epoch: 1
License: GPLv2+
URL: http://www.valgrind.org/
@ -147,6 +147,10 @@ Patch22: valgrind-3.16.1-dwarf5.patch
# RHBZ#1909548 shmctl(IPC_STAT) doesn't set shm_nattch on aarch64
Patch23: valgrind-3.16.0-shmctl.patch
# KDE#140178 open("/proc/self/exe", ...); doesn't quite work
# RHBZ#1925786 valgrind appears to only interject readlink on /proc/self/exe
Patch24: valgrind-3.16.1-open-proc-self-exe.patch
BuildRequires: make
BuildRequires: glibc-devel
@ -299,6 +303,7 @@ Valgrind User Manual for details.
%patch21 -p1
%patch22 -p1
%patch23 -p1
%patch24 -p1
%build
# LTO triggers undefined symbols in valgrind. Valgrind has a --enable-lto
@ -523,6 +528,9 @@ fi
%endif
%changelog
* Sat Feb 6 2021 Mark Wielaard <mjw@fedoraproject.org> - 3.16.1-17
- Add valgrind-3.16.1-open-proc-self-exe.patch
* Wed Feb 3 2021 Mark Wielaard <mjw@fedoraproject.org> - 3.16.1-16
- Add valgrind-3.16.0-shmctl.patch