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91 lines
4.4 KiB
91 lines
4.4 KiB
Index: chromium-128.0.6613.113/sandbox/policy/linux/bpf_utility_policy_linux.cc
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===================================================================
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--- chromium-128.0.6613.113.orig/sandbox/policy/linux/bpf_utility_policy_linux.cc
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+++ chromium-128.0.6613.113/sandbox/policy/linux/bpf_utility_policy_linux.cc
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@@ -34,7 +34,7 @@ ResultExpr UtilityProcessPolicy::Evaluat
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case __NR_fdatasync:
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case __NR_fsync:
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#if defined(__i386__) || defined(__x86_64__) || defined(__mips__) || \
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- defined(__aarch64__)
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+ defined(__aarch64__) || defined(__powerpc64__)
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case __NR_getrlimit:
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#endif
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#if defined(__i386__) || defined(__arm__)
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Index: chromium-128.0.6613.113/sandbox/policy/linux/bpf_renderer_policy_linux.cc
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===================================================================
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--- chromium-128.0.6613.113.orig/sandbox/policy/linux/bpf_renderer_policy_linux.cc
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+++ chromium-128.0.6613.113/sandbox/policy/linux/bpf_renderer_policy_linux.cc
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@@ -87,7 +87,7 @@ ResultExpr RendererProcessPolicy::Evalua
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case __NR_ftruncate64:
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#endif
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#if defined(__i386__) || defined(__x86_64__) || defined(__mips__) || \
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- defined(__aarch64__)
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+ defined(__aarch64__) || defined(__powerpc64__)
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case __NR_getrlimit:
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case __NR_setrlimit:
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// We allow setrlimit to dynamically adjust the address space limit as
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Index: chromium-128.0.6613.113/sandbox/linux/bpf_dsl/linux_syscall_ranges.h
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===================================================================
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--- chromium-128.0.6613.113.orig/sandbox/linux/bpf_dsl/linux_syscall_ranges.h
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+++ chromium-128.0.6613.113/sandbox/linux/bpf_dsl/linux_syscall_ranges.h
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@@ -58,9 +58,9 @@
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#elif defined(__powerpc64__)
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-#include <asm/unistd.h>
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+#include <asm-generic/unistd.h>
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#define MIN_SYSCALL 0u
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-#define MAX_PUBLIC_SYSCALL 386u
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+#define MAX_PUBLIC_SYSCALL __NR_syscalls
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#define MAX_SYSCALL MAX_PUBLIC_SYSCALL
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#else
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Index: chromium-128.0.6613.113/sandbox/linux/services/credentials.cc
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===================================================================
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--- chromium-128.0.6613.113.orig/sandbox/linux/services/credentials.cc
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+++ chromium-128.0.6613.113/sandbox/linux/services/credentials.cc
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@@ -94,7 +94,8 @@ bool ChrootToSafeEmptyDir() {
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int clone_flags = CLONE_FS | LINUX_SIGCHLD;
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void* tls = nullptr;
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-#if (defined(ARCH_CPU_X86_64) || defined(ARCH_CPU_ARM_FAMILY)) && \
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+#if (defined(ARCH_CPU_X86_64) || defined(ARCH_CPU_ARM_FAMILY) || \
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+ defined(ARCH_CPU_PPC64_FAMILY)) && \
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!defined(MEMORY_SANITIZER)
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// Use CLONE_VM | CLONE_VFORK as an optimization to avoid copying page tables.
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// Since clone writes to the new child's TLS before returning, we must set a
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@@ -102,6 +103,11 @@ bool ChrootToSafeEmptyDir() {
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// glibc performs syscalls by calling a function pointer in TLS, so we do not
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// attempt this optimization.
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// TODO(crbug.com/40196869) Broken in MSan builds after LLVM f1bb30a4956f.
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+ //
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+ // NOTE: Without CLONE_VM, fontconfig will attempt to reload configuration
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+ // in every thread. Since the rendered threads are sandboxed without
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+ // filesystem access (e.g. to /etc/fonts/fonts.conf) this will cause font
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+ // configuration loading failures and no fonts will be displayed!
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clone_flags |= CLONE_VM | CLONE_VFORK | CLONE_SETTLS;
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// PTHREAD_STACK_MIN can be dynamic in glibc2.34+, so it is not possible to
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Index: chromium-128.0.6613.113/sandbox/linux/seccomp-bpf-helpers/sigsys_handlers.cc
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===================================================================
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--- chromium-128.0.6613.113.orig/sandbox/linux/seccomp-bpf-helpers/sigsys_handlers.cc
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+++ chromium-128.0.6613.113/sandbox/linux/seccomp-bpf-helpers/sigsys_handlers.cc
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@@ -362,7 +362,16 @@ intptr_t SIGSYSFstatatHandler(const stru
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if (args.nr == __NR_fstatat_default) {
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if (*reinterpret_cast<const char*>(args.args[1]) == '\0' &&
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args.args[3] == static_cast<uint64_t>(AT_EMPTY_PATH)) {
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- return syscall(__NR_fstat_default, static_cast<int>(args.args[0]),
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+ int fd = static_cast<int>(args.args[0]);
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+#if defined(__powerpc64__)
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+ // On ppc64+glibc, some syscalls seem to accidentally negate the first
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+ // parameter which causes checks against it to fail. For now, manually
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+ // negate them back.
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+ // TODO: Investigate the root cause and fix in glibc
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+ if (fd < 0)
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+ fd = -fd;
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+#endif
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+ return syscall(__NR_fstat_default, fd,
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reinterpret_cast<default_stat_struct*>(args.args[2]));
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}
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return -reinterpret_cast<intptr_t>(fs_denied_errno);
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