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author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-11-09 09:47:55 +0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-11-09 09:47:55 +0400 |
commit | cdfe1565c094f60fef00238884aff2c781dd0784 (patch) | |
tree | 2abc7568246a5d4b145072144bfd938f6b47c9fb | |
parent | a601e63717a269b9171a7164ab9e285788362d1b (diff) | |
parent | 237242bddc99041e15a4ca51b8439657cadaff17 (diff) | |
download | linux-cdfe1565c094f60fef00238884aff2c781dd0784.tar.xz |
Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux
Pull virtio and module fixes from Rusty Russell:
"YA module signing build tweak, and two cc'd to stable."
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux:
virtio: Don't access index after unregister.
modules: don't break modules_install on external modules with no key.
module: fix out-by-one error in kallsyms
-rw-r--r-- | drivers/virtio/virtio.c | 4 | ||||
-rw-r--r-- | kernel/module.c | 27 | ||||
-rw-r--r-- | scripts/Makefile.modinst | 3 |
3 files changed, 21 insertions, 13 deletions
diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c index 1e8659ca27ef..809b0de59c09 100644 --- a/drivers/virtio/virtio.c +++ b/drivers/virtio/virtio.c @@ -225,8 +225,10 @@ EXPORT_SYMBOL_GPL(register_virtio_device); void unregister_virtio_device(struct virtio_device *dev) { + int index = dev->index; /* save for after device release */ + device_unregister(&dev->dev); - ida_simple_remove(&virtio_index_ida, dev->index); + ida_simple_remove(&virtio_index_ida, index); } EXPORT_SYMBOL_GPL(unregister_virtio_device); diff --git a/kernel/module.c b/kernel/module.c index 6085f5ef88ea..6e48c3a43599 100644 --- a/kernel/module.c +++ b/kernel/module.c @@ -2293,12 +2293,17 @@ static void layout_symtab(struct module *mod, struct load_info *info) src = (void *)info->hdr + symsect->sh_offset; nsrc = symsect->sh_size / sizeof(*src); + /* strtab always starts with a nul, so offset 0 is the empty string. */ + strtab_size = 1; + /* Compute total space required for the core symbols' strtab. */ - for (ndst = i = strtab_size = 1; i < nsrc; ++i, ++src) - if (is_core_symbol(src, info->sechdrs, info->hdr->e_shnum)) { - strtab_size += strlen(&info->strtab[src->st_name]) + 1; + for (ndst = i = 0; i < nsrc; i++) { + if (i == 0 || + is_core_symbol(src+i, info->sechdrs, info->hdr->e_shnum)) { + strtab_size += strlen(&info->strtab[src[i].st_name])+1; ndst++; } + } /* Append room for core symbols at end of core part. */ info->symoffs = ALIGN(mod->core_size, symsect->sh_addralign ?: 1); @@ -2332,15 +2337,15 @@ static void add_kallsyms(struct module *mod, const struct load_info *info) mod->core_symtab = dst = mod->module_core + info->symoffs; mod->core_strtab = s = mod->module_core + info->stroffs; src = mod->symtab; - *dst = *src; *s++ = 0; - for (ndst = i = 1; i < mod->num_symtab; ++i, ++src) { - if (!is_core_symbol(src, info->sechdrs, info->hdr->e_shnum)) - continue; - - dst[ndst] = *src; - dst[ndst++].st_name = s - mod->core_strtab; - s += strlcpy(s, &mod->strtab[src->st_name], KSYM_NAME_LEN) + 1; + for (ndst = i = 0; i < mod->num_symtab; i++) { + if (i == 0 || + is_core_symbol(src+i, info->sechdrs, info->hdr->e_shnum)) { + dst[ndst] = src[i]; + dst[ndst++].st_name = s - mod->core_strtab; + s += strlcpy(s, &mod->strtab[src[i].st_name], + KSYM_NAME_LEN) + 1; + } } mod->core_num_syms = ndst; } diff --git a/scripts/Makefile.modinst b/scripts/Makefile.modinst index dda4b2b61927..ecbb44797e28 100644 --- a/scripts/Makefile.modinst +++ b/scripts/Makefile.modinst @@ -16,8 +16,9 @@ PHONY += $(modules) __modinst: $(modules) @: +# Don't stop modules_install if we can't sign external modules. quiet_cmd_modules_install = INSTALL $@ - cmd_modules_install = mkdir -p $(2); cp $@ $(2) ; $(mod_strip_cmd) $(2)/$(notdir $@) ; $(mod_sign_cmd) $(2)/$(notdir $@) + cmd_modules_install = mkdir -p $(2); cp $@ $(2) ; $(mod_strip_cmd) $(2)/$(notdir $@) ; $(mod_sign_cmd) $(2)/$(notdir $@) $(patsubst %,|| true,$(KBUILD_EXTMOD)) # Modules built outside the kernel source tree go into extra by default INSTALL_MOD_DIR ?= extra |