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-rw-r--r--arch/s390/kernel/crash_dump.c4
-rw-r--r--arch/s390/kernel/ftrace.c2
-rw-r--r--arch/s390/kernel/ipl.c3
-rw-r--r--arch/s390/kernel/irq.c9
-rw-r--r--arch/s390/kernel/machine_kexec_file.c56
-rw-r--r--arch/s390/kernel/setup.c22
-rw-r--r--arch/s390/kernel/syscalls/syscall.tbl1
-rw-r--r--arch/s390/kernel/traps.c2
-rw-r--r--arch/s390/kernel/vdso32/Makefile2
-rw-r--r--arch/s390/kernel/vdso64/Makefile7
10 files changed, 72 insertions, 36 deletions
diff --git a/arch/s390/kernel/crash_dump.c b/arch/s390/kernel/crash_dump.c
index d72a6df058d7..785d54c9350c 100644
--- a/arch/s390/kernel/crash_dump.c
+++ b/arch/s390/kernel/crash_dump.c
@@ -191,8 +191,8 @@ static int copy_oldmem_user(void __user *dst, void *src, size_t count)
return rc;
} else {
/* Check for swapped kdump oldmem areas */
- if (oldmem_data.start && from - oldmem_data.size < oldmem_data.size) {
- from -= oldmem_data.size;
+ if (oldmem_data.start && from - oldmem_data.start < oldmem_data.size) {
+ from -= oldmem_data.start;
len = min(count, oldmem_data.size - from);
} else if (oldmem_data.start && from < oldmem_data.size) {
len = min(count, oldmem_data.size - from);
diff --git a/arch/s390/kernel/ftrace.c b/arch/s390/kernel/ftrace.c
index 5510c7d10ddc..21d62d8b6b9a 100644
--- a/arch/s390/kernel/ftrace.c
+++ b/arch/s390/kernel/ftrace.c
@@ -290,7 +290,6 @@ void kprobe_ftrace_handler(unsigned long ip, unsigned long parent_ip,
return;
regs = ftrace_get_regs(fregs);
- preempt_disable_notrace();
p = get_kprobe((kprobe_opcode_t *)ip);
if (unlikely(!p) || kprobe_disabled(p))
goto out;
@@ -318,7 +317,6 @@ void kprobe_ftrace_handler(unsigned long ip, unsigned long parent_ip,
}
__this_cpu_write(current_kprobe, NULL);
out:
- preempt_enable_notrace();
ftrace_test_recursion_unlock(bit);
}
NOKPROBE_SYMBOL(kprobe_ftrace_handler);
diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
index e2cc35775b99..5ad1dde23dc5 100644
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -2156,7 +2156,7 @@ void *ipl_report_finish(struct ipl_report *report)
buf = vzalloc(report->size);
if (!buf)
- return ERR_PTR(-ENOMEM);
+ goto out;
ptr = buf;
memcpy(ptr, report->ipib, report->ipib->hdr.len);
@@ -2195,6 +2195,7 @@ void *ipl_report_finish(struct ipl_report *report)
}
BUG_ON(ptr > buf + report->size);
+out:
return buf;
}
diff --git a/arch/s390/kernel/irq.c b/arch/s390/kernel/irq.c
index 0df83ecaa2e0..cb7099682340 100644
--- a/arch/s390/kernel/irq.c
+++ b/arch/s390/kernel/irq.c
@@ -138,7 +138,7 @@ void noinstr do_io_irq(struct pt_regs *regs)
struct pt_regs *old_regs = set_irq_regs(regs);
int from_idle;
- irq_enter();
+ irq_enter_rcu();
if (user_mode(regs)) {
update_timer_sys();
@@ -158,7 +158,8 @@ void noinstr do_io_irq(struct pt_regs *regs)
do_irq_async(regs, IO_INTERRUPT);
} while (MACHINE_IS_LPAR && irq_pending(regs));
- irq_exit();
+ irq_exit_rcu();
+
set_irq_regs(old_regs);
irqentry_exit(regs, state);
@@ -172,7 +173,7 @@ void noinstr do_ext_irq(struct pt_regs *regs)
struct pt_regs *old_regs = set_irq_regs(regs);
int from_idle;
- irq_enter();
+ irq_enter_rcu();
if (user_mode(regs)) {
update_timer_sys();
@@ -190,7 +191,7 @@ void noinstr do_ext_irq(struct pt_regs *regs)
do_irq_async(regs, EXT_INTERRUPT);
- irq_exit();
+ irq_exit_rcu();
set_irq_regs(old_regs);
irqentry_exit(regs, state);
diff --git a/arch/s390/kernel/machine_kexec_file.c b/arch/s390/kernel/machine_kexec_file.c
index 528edff085d9..8f43575a4dd3 100644
--- a/arch/s390/kernel/machine_kexec_file.c
+++ b/arch/s390/kernel/machine_kexec_file.c
@@ -7,11 +7,14 @@
* Author(s): Philipp Rudo <prudo@linux.vnet.ibm.com>
*/
+#define pr_fmt(fmt) "kexec: " fmt
+
#include <linux/elf.h>
#include <linux/errno.h>
#include <linux/kexec.h>
#include <linux/module_signature.h>
#include <linux/verification.h>
+#include <linux/vmalloc.h>
#include <asm/boot_data.h>
#include <asm/ipl.h>
#include <asm/setup.h>
@@ -170,6 +173,7 @@ static int kexec_file_add_ipl_report(struct kimage *image,
struct kexec_buf buf;
unsigned long addr;
void *ptr, *end;
+ int ret;
buf.image = image;
@@ -199,9 +203,13 @@ static int kexec_file_add_ipl_report(struct kimage *image,
ptr += len;
}
+ ret = -ENOMEM;
buf.buffer = ipl_report_finish(data->report);
+ if (!buf.buffer)
+ goto out;
buf.bufsz = data->report->size;
buf.memsz = buf.bufsz;
+ image->arch.ipl_buf = buf.buffer;
data->memsz += buf.memsz;
@@ -209,7 +217,9 @@ static int kexec_file_add_ipl_report(struct kimage *image,
data->kernel_buf + offsetof(struct lowcore, ipl_parmblock_ptr);
*lc_ipl_parmblock_ptr = (__u32)buf.mem;
- return kexec_add_buffer(&buf);
+ ret = kexec_add_buffer(&buf);
+out:
+ return ret;
}
void *kexec_file_add_components(struct kimage *image,
@@ -282,8 +292,16 @@ int arch_kexec_apply_relocations_add(struct purgatory_info *pi,
const Elf_Shdr *relsec,
const Elf_Shdr *symtab)
{
+ const char *strtab, *name, *shstrtab;
+ const Elf_Shdr *sechdrs;
Elf_Rela *relas;
int i, r_type;
+ int ret;
+
+ /* String & section header string table */
+ sechdrs = (void *)pi->ehdr + pi->ehdr->e_shoff;
+ strtab = (char *)pi->ehdr + sechdrs[symtab->sh_link].sh_offset;
+ shstrtab = (char *)pi->ehdr + sechdrs[pi->ehdr->e_shstrndx].sh_offset;
relas = (void *)pi->ehdr + relsec->sh_offset;
@@ -296,15 +314,27 @@ int arch_kexec_apply_relocations_add(struct purgatory_info *pi,
sym = (void *)pi->ehdr + symtab->sh_offset;
sym += ELF64_R_SYM(relas[i].r_info);
- if (sym->st_shndx == SHN_UNDEF)
+ if (sym->st_name)
+ name = strtab + sym->st_name;
+ else
+ name = shstrtab + sechdrs[sym->st_shndx].sh_name;
+
+ if (sym->st_shndx == SHN_UNDEF) {
+ pr_err("Undefined symbol: %s\n", name);
return -ENOEXEC;
+ }
- if (sym->st_shndx == SHN_COMMON)
+ if (sym->st_shndx == SHN_COMMON) {
+ pr_err("symbol '%s' in common section\n", name);
return -ENOEXEC;
+ }
if (sym->st_shndx >= pi->ehdr->e_shnum &&
- sym->st_shndx != SHN_ABS)
+ sym->st_shndx != SHN_ABS) {
+ pr_err("Invalid section %d for symbol %s\n",
+ sym->st_shndx, name);
return -ENOEXEC;
+ }
loc = pi->purgatory_buf;
loc += section->sh_offset;
@@ -318,7 +348,23 @@ int arch_kexec_apply_relocations_add(struct purgatory_info *pi,
addr = section->sh_addr + relas[i].r_offset;
r_type = ELF64_R_TYPE(relas[i].r_info);
- arch_kexec_do_relocs(r_type, loc, val, addr);
+
+ if (r_type == R_390_PLT32DBL)
+ r_type = R_390_PC32DBL;
+
+ ret = arch_kexec_do_relocs(r_type, loc, val, addr);
+ if (ret) {
+ pr_err("Unknown rela relocation: %d\n", r_type);
+ return -ENOEXEC;
+ }
}
return 0;
}
+
+int arch_kimage_file_post_load_cleanup(struct kimage *image)
+{
+ vfree(image->arch.ipl_buf);
+ image->arch.ipl_buf = NULL;
+
+ return kexec_image_post_load_cleanup_default(image);
+}
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 40405f2304f1..225ab2d0a4c6 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -606,7 +606,7 @@ static void __init setup_resources(void)
static void __init setup_memory_end(void)
{
- memblock_remove(ident_map_size, ULONG_MAX);
+ memblock_remove(ident_map_size, PHYS_ADDR_MAX - ident_map_size);
max_pfn = max_low_pfn = PFN_DOWN(ident_map_size);
pr_notice("The maximum memory size is %luMB\n", ident_map_size >> 20);
}
@@ -638,14 +638,6 @@ static struct notifier_block kdump_mem_nb = {
#endif
/*
- * Make sure that the area above identity mapping is protected
- */
-static void __init reserve_above_ident_map(void)
-{
- memblock_reserve(ident_map_size, ULONG_MAX);
-}
-
-/*
* Reserve memory for kdump kernel to be loaded with kexec
*/
static void __init reserve_crashkernel(void)
@@ -785,7 +777,6 @@ static void __init memblock_add_mem_detect_info(void)
}
memblock_set_bottom_up(false);
memblock_set_node(0, ULONG_MAX, &memblock.memory, 0);
- memblock_dump_all();
}
/*
@@ -826,9 +817,6 @@ static void __init setup_memory(void)
storage_key_init_range(start, end);
psw_set_key(PAGE_DEFAULT_KEY);
-
- /* Only cosmetics */
- memblock_enforce_memory_limit(memblock_end_of_DRAM());
}
static void __init relocate_amode31_section(void)
@@ -999,24 +987,24 @@ void __init setup_arch(char **cmdline_p)
setup_control_program_code();
/* Do some memory reservations *before* memory is added to memblock */
- reserve_above_ident_map();
reserve_kernel();
reserve_initrd();
reserve_certificate_list();
reserve_mem_detect_info();
+ memblock_set_current_limit(ident_map_size);
memblock_allow_resize();
/* Get information about *all* installed memory */
memblock_add_mem_detect_info();
free_mem_detect_info();
+ setup_memory_end();
+ memblock_dump_all();
+ setup_memory();
relocate_amode31_section();
setup_cr();
-
setup_uv();
- setup_memory_end();
- setup_memory();
dma_contiguous_reserve(ident_map_size);
vmcp_cma_reserve();
if (MACHINE_HAS_EDAT2)
diff --git a/arch/s390/kernel/syscalls/syscall.tbl b/arch/s390/kernel/syscalls/syscall.tbl
index df5261e5cfe1..ed9c5c2eafad 100644
--- a/arch/s390/kernel/syscalls/syscall.tbl
+++ b/arch/s390/kernel/syscalls/syscall.tbl
@@ -451,3 +451,4 @@
446 common landlock_restrict_self sys_landlock_restrict_self sys_landlock_restrict_self
# 447 reserved for memfd_secret
448 common process_mrelease sys_process_mrelease sys_process_mrelease
+449 common futex_waitv sys_futex_waitv sys_futex_waitv
diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c
index 035705c9f23e..2b780786fc68 100644
--- a/arch/s390/kernel/traps.c
+++ b/arch/s390/kernel/traps.c
@@ -84,7 +84,7 @@ static void default_trap_handler(struct pt_regs *regs)
{
if (user_mode(regs)) {
report_user_fault(regs, SIGSEGV, 0);
- force_fatal_sig(SIGSEGV);
+ force_exit_sig(SIGSEGV);
} else
die(regs, "Unknown program exception");
}
diff --git a/arch/s390/kernel/vdso32/Makefile b/arch/s390/kernel/vdso32/Makefile
index e3e6ac5686df..245bddfe9bc0 100644
--- a/arch/s390/kernel/vdso32/Makefile
+++ b/arch/s390/kernel/vdso32/Makefile
@@ -22,7 +22,7 @@ KBUILD_AFLAGS_32 += -m31 -s
KBUILD_CFLAGS_32 := $(filter-out -m64,$(KBUILD_CFLAGS))
KBUILD_CFLAGS_32 += -m31 -fPIC -shared -fno-common -fno-builtin
-LDFLAGS_vdso32.so.dbg += -fPIC -shared -nostdlib -soname=linux-vdso32.so.1 \
+LDFLAGS_vdso32.so.dbg += -fPIC -shared -soname=linux-vdso32.so.1 \
--hash-style=both --build-id=sha1 -melf_s390 -T
$(targets:%=$(obj)/%.dbg): KBUILD_CFLAGS = $(KBUILD_CFLAGS_32)
diff --git a/arch/s390/kernel/vdso64/Makefile b/arch/s390/kernel/vdso64/Makefile
index 6568de236701..9e2b95a222a9 100644
--- a/arch/s390/kernel/vdso64/Makefile
+++ b/arch/s390/kernel/vdso64/Makefile
@@ -8,8 +8,9 @@ ARCH_REL_TYPE_ABS += R_390_GOT|R_390_PLT
include $(srctree)/lib/vdso/Makefile
obj-vdso64 = vdso_user_wrapper.o note.o
obj-cvdso64 = vdso64_generic.o getcpu.o
-CFLAGS_REMOVE_getcpu.o = -pg $(CC_FLAGS_FTRACE) $(CC_FLAGS_EXPOLINE)
-CFLAGS_REMOVE_vdso64_generic.o = -pg $(CC_FLAGS_FTRACE) $(CC_FLAGS_EXPOLINE)
+VDSO_CFLAGS_REMOVE := -pg $(CC_FLAGS_FTRACE) $(CC_FLAGS_EXPOLINE) $(CC_FLAGS_CHECK_STACK)
+CFLAGS_REMOVE_getcpu.o = $(VDSO_CFLAGS_REMOVE)
+CFLAGS_REMOVE_vdso64_generic.o = $(VDSO_CFLAGS_REMOVE)
# Build rules
@@ -25,7 +26,7 @@ KBUILD_AFLAGS_64 += -m64 -s
KBUILD_CFLAGS_64 := $(filter-out -m64,$(KBUILD_CFLAGS))
KBUILD_CFLAGS_64 += -m64 -fPIC -shared -fno-common -fno-builtin
-ldflags-y := -fPIC -shared -nostdlib -soname=linux-vdso64.so.1 \
+ldflags-y := -fPIC -shared -soname=linux-vdso64.so.1 \
--hash-style=both --build-id=sha1 -T
$(targets:%=$(obj)/%.dbg): KBUILD_CFLAGS = $(KBUILD_CFLAGS_64)
generated by cgit (git 2.34.1) at 2024-04-26 10:40:48 +0000