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Author SHA1 Message Date
Seth Jennings
cd92020f71 add *hook.c files and make target dep for patch-hook.o 
Signed-off-by: Seth Jennings <sjenning@redhat.com>
 2015-01-22 11:39:34 -06:00
Seth Jennings
0325e43d93 add naming convention documentation and fixes 
Signed-off-by: Seth Jennings <sjenning@redhat.com>
 2015-01-22 11:39:34 -06:00
Seth Jennings
923d36ffbc review fixups 
Signed-off-by: Seth Jennings <sjenning@redhat.com>
 2015-01-22 10:35:11 -06:00
Seth Jennings
f1903de1eb add livepatch API support 
Adds a new patch module scaffold for use when building against a kernel
with CONFIG_LIVE_PATCHING=y.

Signed-off-by: Seth Jennings <sjenning@redhat.com>
 2015-01-21 18:28:31 -06:00
Seth Jennings
4c6e54b2d2 Merge pull request #475 from rousya/master 
fix two bugs
 2015-01-19 08:52:38 -06:00
Xie XiuQi
6b446cba67 create-diff-object: fix a potential overflow for rela type 
rela.type should be unsigned int instead of unsighed char.

/usr/include/gelf.h:#define GELF_R_TYPE(info)   ELF64_R_TYPE (info)
/usr/include/elf.h:#define ELF64_R_TYPE(i)      ((i) & 0xffffffff)

Signed-off-by: Xie XiuQi <xiexiuqi@huawei.com>
 2015-01-19 22:43:26 +08:00
Seth Jennings
97c2bea0c0 Merge pull request #467 from flaming-toast/sysfs_perm 
Restrict reading old_addr and new_addr to root only
 2015-01-05 11:13:04 -06:00
Seth Jennings
c163bf5c2e Merge pull request #464 from jpoimboe/readme-force-unsafe 
update README with some new frequently asked questions
 2015-01-05 11:12:52 -06:00
Seth Jennings
5e1c6e44c4 Merge pull request #463 from jpoimboe/force-description-update 
remove obsolete warning for KPATCH_FORCE_UNSAFE
 2015-01-05 11:12:31 -06:00
Seth Jennings
1a18417aa0 Merge pull request #474 from jpoimboe/readme-rhel7-dep 
readme: add ncurses-devel to RHEL dependencies
 2014-12-18 15:03:40 -06:00
Josh Poimboeuf
f4ee5d2a3a readme: add ncurses-devel to RHEL dependencies 2014-12-18 14:55:16 -06:00
Seth Jennings
489e6e2407 Merge pull request #473 from jpoimboe/dracut-dependencies 
fix dracut dependencies (and "kpatch install")
 2014-12-03 17:38:28 -05:00
Josh Poimboeuf
07fccdb577 change inst_symlink to inst for insmod 
Use "inst" instead of "inst_symlink" for insmod, since insmod might not
necessarily be a symlink on some distros.  inst_symlink is functionally
the same as inst, with an additional check to make sure that it's a
symlink (which we don't care about either way).
 2014-12-03 16:10:21 -06:00
Josh Poimboeuf
6cdb5011c5 fix dracut dependencies 
The "kpatch install" command is broken because the kpatch script has
some missing dependencies in the initramfs.  Make sure the new
dependencies (readelf and awk) are added to the initramfs.
 2014-12-03 16:09:50 -06:00
Josh Poimboeuf
f817265c5a Merge pull request #472 from jpoimboe/0.2.2 
bump version to 0.2.2
 2014-12-03 09:03:24 -06:00
Josh Poimboeuf
874c438bb6 bump version to 0.2.2 2014-12-03 09:02:55 -06:00
Seth Jennings
7fed248205 Merge pull request #469 from jstancek/issue468 
wait for outstanding shadow variables free requests in kpatch_exit
 2014-11-21 11:45:01 -05:00
Jan Stancek
6e67e57a42 wait for outstanding shadow variables free requests in kpatch_exit 
Unload of kpatch module (and kpatch_shadow_hash table) before
all shadow variables free requests are processed can lead to
kernel crash.

Add rcu_barrier() to kpatch_exit() to wait for all outstanding
RCU callbacks to complete.

Signed-off-by: Jan Stancek <jstancek@redhat.com>
 2014-11-21 17:19:51 +01:00
Jessica Yu
cd4c0ce02d kpatch-patch-hook: change old_addr and new_addr perms to readable by root only 2014-11-07 21:30:32 -08:00
Josh Poimboeuf
0fbb7856e4 update README with some new frequently asked questions 2014-10-31 11:45:48 -05:00
Josh Poimboeuf
76de86ab75 remove obsolete warning for KPATCH_FORCE_UNSAFE 
This warning no longer applies thanks to #398.
 2014-10-31 11:39:14 -05:00
Josh Poimboeuf
f0ab1caad1 Merge pull request #459 from ColinIanKing/master 
Fix memory leak on dest buffer on early return path
 2014-10-21 10:03:09 -05:00
Josh Poimboeuf
d0697718da Merge pull request #458 from arges/master 
kpatch-build: fixup source package version construction
 2014-10-21 10:02:13 -05:00
Colin Ian King
a41ce8d409 Fix memory leak on dest buffer on early return path 
dest is allocated but not freed on an early return path
where dest is not used

Signed-off-by: Colin Ian King <colin.king@canonical.com>
 2014-10-20 09:42:44 +01:00
Chris J Arges
1831030c1d kpatch-build: fixup source package version construction 
Bash doesn't correctly format the version string which causes the source
package to not be downloaded correctly.

Signed-off-by: Chris J Arges <chris.j.arges@canonical.com>
 2014-10-17 15:38:05 +02:00
Seth Jennings
a31a31f184 Merge pull request #457 from jpoimboe/warn-fix 
warn detection fix
 2014-10-08 11:24:35 -05:00
Josh Poimboeuf
fca189152a fix review comment 2014-10-08 11:16:09 -05:00
Seth Jennings
664fb2a8a2 Merge pull request #453 from jpoimboe/rs-special-static 
make _rs a "special" static local variable
 2014-10-08 10:58:11 -05:00
Josh Poimboeuf
ea819a18b0 warn detection fix 
The current WARN detection logic catches the majority of cases, but
there are still a lot of outliers which it doesn't catch (thanks, gcc).

I looked at a much larger sample of WARN calls and came up with a more
generic algorithm.
 2014-10-07 22:01:14 -05:00
Josh Poimboeuf
128bc9fb31 fix review comments 
- rela sections don't have secsyms
- add some comments
 2014-10-07 19:47:38 -05:00
Seth Jennings
440a7b06c0 Merge pull request #455 from jpoimboe/detect-warn-change 
detect and ignore WARN-only changes
 2014-10-07 16:49:40 -05:00
Josh Poimboeuf
027e2b3b4e fix review comment 2014-10-07 16:47:25 -05:00
Josh Poimboeuf
4c7fb9119a detect and ignore WARN-only changes 
WARN-only function changes are very common, and a serious PITA for patch
authors.  Detect and ignore them.

Fixes #454.
 2014-10-07 11:56:41 -05:00
Josh Poimboeuf
c799ecc55f make _rs a special static local 
The _rs variable is used for printk ratelimiting, similar to __warned,
which makes it a logical candidate to be "special": don't correlate it,
yet don't mark a function as changed just because it references it.
 2014-10-07 08:09:20 -05:00
Josh Poimboeuf
fe846f4d56 refactor is_special_static 
Make is_special_static()'s implementation more generic to make it easier
to add special static variables in the future
 2014-10-07 08:09:20 -05:00
Josh Poimboeuf
c705c767af change special_static_prefix to is_special_static 
We no longer need to return the prefix, so change it to a boolean
function.
 2014-10-07 08:09:20 -05:00
Josh Poimboeuf
0e8f1ae02d use kpatch_mangled_strcmp in rela_equal 
Use kpatch_mangled_strcmp() to compare the prefixes of special static
locals.
 2014-10-07 08:09:20 -05:00
Josh Poimboeuf
050d7933d7 refactor rela_equal 
Make it easier to read and reduce the indent levels
 2014-10-07 08:09:20 -05:00
Seth Jennings
bb6edd16f9 Merge pull request #452 from jpoimboe/module-call-external 
allow patched modules to call external functions
 2014-10-07 00:04:43 -05:00
Seth Jennings
31852c0dfa Merge pull request #451 from jpoimboe/sections-syms-fix 
section reference replacement for references inside symbols
 2014-10-07 00:01:20 -05:00
Seth Jennings
8e9aa2b559 Merge pull request #448 from jpoimboe/static-local-fixes 
improve static local variable correlation
 2014-10-06 23:56:24 -05:00
Seth Jennings
5ebe1f6a6e Merge pull request #450 from jpoimboe/unlink-err-fix 
fix error path typo
 2014-10-06 23:55:26 -05:00
Josh Poimboeuf
f5de932b8d allow patched modules to call external functions 
When patching a kernel module, if we can't find a needed dynrela symbol,
we currently assume it's exported.  However, it's also possible that
it's provided by another .o in the patch module.  Add support for that.

Fixes #445.
 2014-10-06 23:16:13 -05:00
Josh Poimboeuf
2a29d8704e fix review comment 2014-10-06 22:56:53 -05:00
Josh Poimboeuf
3dd442b12d section reference replacement for references inside symbols 
Currently unbundled section references are only replaced if the start of
the symbol is referenced.  It's also useful to support replacement of
references which point to inside the symbol.
 2014-10-06 22:52:01 -05:00
Josh Poimboeuf
b6ef92bf6c fix error path typo 2014-10-06 22:38:06 -05:00
Josh Poimboeuf
bb35e37c47 small replace_sections_syms refactor 
Move this code block to a more logical place, outside of the symbol
loop.
 2014-10-06 22:16:22 -05:00
Josh Poimboeuf
731de44ecf Merge pull request #449 from jpoimboe/test-cleanup-fix 
test: make sure TMP.patch is cleaned up
 2014-10-06 14:43:14 -05:00
Josh Poimboeuf
7876ce4aae test: make sure TMP.patch is cleaned up 2014-10-06 14:42:34 -05:00
Josh Poimboeuf
fb49e254cf improve static local variable correlation 
Improve the static local variable correlation logic, for the case where
a static local is used by multiple functions.  For each usage of the
variable, look for a corresponding usage in the base object.  If we find
at least one matching usage, consider it a twin.
 2014-10-06 14:38:46 -05:00