user/sven/linux.git/scripts, branch v5.7.17

recordmcount: Fix build failure on non arm64

2020-08-21T11:07:40Z

[ Upstream commit 3df14264ad9930733a8166e5bd0eccc1727564bb ] Commit ea0eada45632 leads to the following build failure on powerpc: HOSTCC scripts/recordmcount scripts/recordmcount.c: In function 'arm64_is_fake_mcount': scripts/recordmcount.c:440: error: 'R_AARCH64_CALL26' undeclared (first use in this function) scripts/recordmcount.c:440: error: (Each undeclared identifier is reported only once scripts/recordmcount.c:440: error: for each function it appears in.) make[2]: *** [scripts/recordmcount] Error 1 Make sure R_AARCH64_CALL26 is always defined. Fixes: ea0eada45632 ("recordmcount: only record relocation of type R_AARCH64_CALL26 on arm64.") Signed-off-by: Christophe Leroy Acked-by: Steven Rostedt (VMware) Acked-by: Gregory Herrero Cc: Gregory Herrero Link: https://lore.kernel.org/r/5ca1be21fa6ebf73203b45fd9aadd2bafb5e6b15.1597049145.git.christophe.leroy@csgroup.eu Signed-off-by: Catalin Marinas Signed-off-by: Sasha Levin

scripts/selinux/mdp: fix initial SID handling

2020-08-19T06:23:32Z

[ Upstream commit 382c2b5d23b4245f1818f69286db334355488dc4 ] commit e3e0b582c321 ("selinux: remove unused initial SIDs and improve handling") broke scripts/selinux/mdp since the unused initial SID names were removed and the corresponding generation of policy initial SID definitions by mdp was not updated accordingly. Fix it. With latest upstream checkpolicy it is no longer necessary to include the SID context definitions for the unused initial SIDs but retain them for compatibility with older checkpolicy. Fixes: e3e0b582c321 ("selinux: remove unused initial SIDs and improve handling") Signed-off-by: Stephen Smalley Signed-off-by: Paul Moore Signed-off-by: Sasha Levin

recordmcount: only record relocation of type R_AARCH64_CALL26 on arm64.

2020-08-19T06:23:30Z

[ Upstream commit ea0eada45632f4807b2f49de951072283e2d781c ] Currently, if a section has a relocation to '_mcount' symbol, a new __mcount_loc entry will be added whatever the relocation type is. This is problematic when a relocation to '_mcount' is in the middle of a section and is not a call for ftrace use. Such relocation could be generated with below code for example: bool is_mcount(unsigned long addr) { return (target == (unsigned long) &_mcount); } With this snippet of code, ftrace will try to patch the mcount location generated by this code on module load and fail with: Call trace: ftrace_bug+0xa0/0x28c ftrace_process_locs+0x2f4/0x430 ftrace_module_init+0x30/0x38 load_module+0x14f0/0x1e78 __do_sys_finit_module+0x100/0x11c __arm64_sys_finit_module+0x28/0x34 el0_svc_common+0x88/0x194 el0_svc_handler+0x38/0x8c el0_svc+0x8/0xc ---[ end trace d828d06b36ad9d59 ]--- ftrace failed to modify [] 0xffffa2dbf3a3a41c actual: 66:a9:3c:90 Initializing ftrace call sites ftrace record flags: 2000000 (0) expected tramp: ffffa2dc6cf66724 So Limit the relocation type to R_AARCH64_CALL26 as in perl version of recordmcount. Fixes: af64d2aa872a ("ftrace: Add arm64 support to recordmcount") Signed-off-by: Gregory Herrero Acked-by: Steven Rostedt (VMware) Link: https://lore.kernel.org/r/20200717143338.19302-1-gregory.herrero@oracle.com Signed-off-by: Catalin Marinas Signed-off-by: Sasha Levin

scripts: add dummy report mode to add_namespace.cocci

2020-08-11T13:35:33Z

commit 55c7549819e438f40a3ef1d8ac5c38b73390bcb7 upstream. When running `make coccicheck` in report mode using the add_namespace.cocci file, it will fail for files that contain MODULE_LICENSE. Those match the replacement precondition, but spatch errors out as virtual.ns is not set. In order to fix that, add the virtual rule nsdeps and only do search and replace if that rule has been explicitly requested. In order to make spatch happy in report mode, we also need a dummy rule, as otherwise it errors out with "No rules apply". Using a script:python rule appears unrelated and odd, but this is the shortest I could come up with. Adjust scripts/nsdeps accordingly to set the nsdeps rule when run trough `make nsdeps`. Suggested-by: Julia Lawall Fixes: c7c4e29fb5a4 ("scripts: add_namespace: Fix coccicheck failed") Cc: YueHaibing Cc: jeyu@kernel.org Cc: cocci@systeme.lip6.fr Cc: stable@vger.kernel.org Signed-off-by: Matthias Maennich Reported-by: Shuah Khan Acked-by: Julia Lawall Link: https://lore.kernel.org/r/20200604164145.173925-1-maennich@google.com Signed-off-by: Greg Kroah-Hartman

scripts/gdb: fix lx-symbols 'gdb.error' while loading modules

2020-07-29T08:19:48Z

[ Upstream commit 7359608a271ce81803de148befefd309baf88c76 ] Commit ed66f991bb19 ("module: Refactor section attr into bin attribute") removed the 'name' field from 'struct module_sect_attr' triggering the following error when invoking lx-symbols: (gdb) lx-symbols loading vmlinux scanning for modules in linux/build loading @0xffffffffc014f000: linux/build/drivers/net/tun.ko Python Exception There is no member named name.: Error occurred in Python: There is no member named name. This patch fixes the issue taking the module name from the 'struct attribute'. Fixes: ed66f991bb19 ("module: Refactor section attr into bin attribute") Signed-off-by: Stefano Garzarella Signed-off-by: Andrew Morton Reviewed-by: Jan Kiszka Reviewed-by: Kieran Bingham Link: http://lkml.kernel.org/r/20200722102239.313231-1-sgarzare@redhat.com Signed-off-by: Linus Torvalds Signed-off-by: Sasha Levin

scripts/decode_stacktrace: strip basepath from all paths

2020-07-29T08:19:48Z

[ Upstream commit d178770d8d21489abf5bafefcbb6d5243b482e9a ] Currently the basepath is removed only from the beginning of the string. When the symbol is inlined and there's multiple line outputs of addr2line, only the first line would have basepath removed. Change to remove the basepath prefix from all lines. Fixes: 31013836a71e ("scripts/decode_stacktrace: match basepath using shell prefix operator, not regex") Co-developed-by: Shik Chen Signed-off-by: Pi-Hsun Shih Signed-off-by: Shik Chen Signed-off-by: Andrew Morton Reviewed-by: Stephen Boyd Cc: Sasha Levin Cc: Nicolas Boichat Cc: Jiri Slaby Link: http://lkml.kernel.org/r/20200720082709.252805-1-pihsun@chromium.org Signed-off-by: Linus Torvalds Signed-off-by: Sasha Levin

recordmcount: support >64k sections

2020-06-30T19:36:18Z

[ Upstream commit 4ef57b21d6fb49d2b25c47e4cff467a0c2c8b6b7 ] When compiling a kernel with Clang and LTO, we need to run recordmcount on vmlinux.o with a large number of sections, which currently fails as the program doesn't understand extended section indexes. This change adds support for processing binaries with >64k sections. Link: https://lkml.kernel.org/r/20200424193046.160744-1-samitolvanen@google.com Link: https://lore.kernel.org/lkml/CAK7LNARbZhoaA=Nnuw0=gBrkuKbr_4Ng_Ei57uafujZf7Xazgw@mail.gmail.com/ Cc: Kees Cook Reviewed-by: Matt Helsley Signed-off-by: Sami Tolvanen Signed-off-by: Steven Rostedt (VMware) Signed-off-by: Sasha Levin

kbuild: improve cc-option to clean up all temporary files

2020-06-30T19:36:18Z

[ Upstream commit f2f02ebd8f3833626642688b2d2c6a7b3c141fa9 ] When cc-option and friends evaluate compiler flags, the temporary file $$TMP is created as an output object, and automatically cleaned up. The actual file path of $$TMP is ..tmp, here is the process ID of $(shell ...) invoked from cc-option. (Please note $$$$ is the escape sequence of $$). Such garbage files are cleaned up in most cases, but some compiler flags create additional output files. For example, -gsplit-dwarf creates a .dwo file. When CONFIG_DEBUG_INFO_SPLIT=y, you will see a bunch of ..dwo files left in the top of build directories. You may not notice them unless you do 'ls -a', but the garbage files will increase every time you run 'make'. This commit changes the temporary object path to .tmp_/tmp, and removes .tmp_ directory when exiting. Separate build artifacts such as *.dwo will be cleaned up all together because their file paths are usually determined based on the base name of the object. Another example is -ftest-coverage, which outputs the coverage data into .gcno Signed-off-by: Masahiro Yamada Signed-off-by: Sasha Levin

modpost: fix -i (--ignore-errors) MAKEFLAGS detection

2020-06-24T15:49:02Z

[ Upstream commit 91e6ee581270b8ae970f028b898314d73f16870b ] $(filter -i,$(MAKEFLAGS)) works only in limited use-cases. The representation of $(MAKEFLAGS) depends on various factors: - GNU Make version (version 3.8x or version 4.x) - The presence of other flags like -j In my experiments, $(MAKEFLAGS) is expanded as follows: * GNU Make 3.8x: * without -j option: --no-print-directory -Rri * with -j option: --no-print-directory -Rr --jobserver-fds=3,4 -j -i * GNU Make 4.x: * without -j option: irR --no-print-directory * with -j option: irR -j --jobserver-fds=3,4 --no-print-directory For GNU Make 4.x, the flags are grouped as 'irR', which does not work. For the single thread build with GNU Make 3.8x, the flags are grouped as '-Rri', which does not work either. To make it work for all cases, do likewise as commit 6f0fa58e4596 ("kbuild: simplify silent build (-s) detection"). BTW, since commit ff9b45c55b26 ("kbuild: modpost: read modules.order instead of $(MODVERDIR)/*.mod"), you also need to pass -k option to build final *.ko files. 'make -i -k' ignores compile errors in modules, and build as many remaining *.ko as possible. Please note this feature is kind of dangerous if other modules depend on the broken module because the generated modules will lack the correct module dependency or CRC. Honestly, I am not a big fan of it, but I am keeping this feature. Fixes: eed380f3f593 ("modpost: Optionally ignore secondary errors seen if a single module build fails") Cc: Guenter Roeck Signed-off-by: Masahiro Yamada Signed-off-by: Sasha Levin

scripts: headers_install: Exit with error on config leak

2020-06-24T15:48:55Z

[ Upstream commit 5967577231f9b19acd5a59485e9075964065bbe3 ] Misuse of CONFIG_* in UAPI headers should result in an error. These config options can be set in userspace by the user application which includes these headers to control the APIs and structures being used in a kernel which supports multiple targets. Signed-off-by: Siddharth Gupta Signed-off-by: Masahiro Yamada Signed-off-by: Sasha Levin