From: kernel test robot <lkp@intel.com>
To: "H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@kernel.org>,
"Ingo Molnar" <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>
Cc: <oe-kbuild-all@lists.linux.dev>, "H. Peter Anvin" <hpa@zytor.com>,
<x86@kernel.org>, Chris Mason <chris.mason@fusionio.com>,
Thorsten Leemhuis <linux@leemhuis.info>,
<linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2 2/3] x86/entry/vdso: fix filtering of vdso compiler flags
Date: Sun, 18 Jan 2026 10:17:20 +0800 [thread overview]
Message-ID: <aWxCsCrTfItJ/WUw@rli9-mobl> (raw)
In-Reply-To: <20260116204057.386268-3-hpa@zytor.com>
Hi Peter,
First bad commit (maybe != root cause):
kernel test robot noticed the following build errors:
[auto build test ERROR on tip/master]
[also build test ERROR on next-20260116]
[cannot apply to tip/auto-latest linus/master v6.19-rc5]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/H-Peter-Anvin/x86-entry-vdso-update-the-object-paths-for-make-vdso_install/20260117-044522
base: tip/master
patch link: https://lore.kernel.org/r/20260116204057.386268-3-hpa%40zytor.com
patch subject: [PATCH v2 2/3] x86/entry/vdso: fix filtering of vdso compiler flags
config: x86_64-rhel-9.4-func (https://download.01.org/0day-ci/archive/20260118/202601180025.lLCHWiad-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260118/202601180025.lLCHWiad-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/r/202601180025.lLCHWiad-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from include/linux/compiler_types.h:44,
from <command-line>:
include/linux/compiler-context-analysis.h: In function '_context_unsafe_alias':
>> include/linux/compiler-context-analysis.h:237:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
237 | static inline void _context_unsafe_alias(void **p) { }
| ^~~~~~
In file included from include/linux/export.h:5,
from include/linux/linkage.h:7,
from arch/x86/include/asm/cache.h:5,
from include/vdso/cache.h:5,
from include/linux/cache.h:6,
from include/linux/time.h:5,
from arch/x86/entry/vdso/vdso64/../common/vclock_gettime.c:11,
from arch/x86/entry/vdso/vdso64/vclock_gettime.c:1:
include/linux/compiler.h: In function 'offset_to_ptr':
include/linux/compiler.h:272:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
272 | {
| ^
In file included from include/asm-generic/rwonce.h:26,
from ./arch/x86/include/generated/asm/rwonce.h:1,
from include/linux/compiler.h:382:
include/linux/kasan-checks.h: In function 'kasan_check_read':
include/linux/kasan-checks.h:41:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
41 | {
| ^
include/linux/kasan-checks.h: In function 'kasan_check_write':
include/linux/kasan-checks.h:45:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
45 | {
| ^
In file included from include/asm-generic/rwonce.h:27:
include/linux/kcsan-checks.h: In function '__kcsan_check_access':
include/linux/kcsan-checks.h:190:41: error: '-mindirect-branch' and '-fcf-protection' are not compatible
190 | int type) { }
| ^~~
include/linux/kcsan-checks.h: In function '__kcsan_mb':
include/linux/kcsan-checks.h:192:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
192 | static inline void __kcsan_mb(void) { }
| ^~~~~~
include/linux/kcsan-checks.h: In function '__kcsan_wmb':
include/linux/kcsan-checks.h:193:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
193 | static inline void __kcsan_wmb(void) { }
| ^~~~~~
include/linux/kcsan-checks.h: In function '__kcsan_rmb':
include/linux/kcsan-checks.h:194:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
194 | static inline void __kcsan_rmb(void) { }
| ^~~~~~
include/linux/kcsan-checks.h: In function '__kcsan_release':
include/linux/kcsan-checks.h:195:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
195 | static inline void __kcsan_release(void) { }
| ^~~~~~
include/linux/kcsan-checks.h: In function 'kcsan_disable_current':
include/linux/kcsan-checks.h:196:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
196 | static inline void kcsan_disable_current(void) { }
| ^~~~~~
include/linux/kcsan-checks.h: In function 'kcsan_enable_current':
include/linux/kcsan-checks.h:197:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
197 | static inline void kcsan_enable_current(void) { }
| ^~~~~~
include/linux/kcsan-checks.h: In function 'kcsan_enable_current_nowarn':
include/linux/kcsan-checks.h:198:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
198 | static inline void kcsan_enable_current_nowarn(void) { }
| ^~~~~~
include/linux/kcsan-checks.h: In function 'kcsan_nestable_atomic_begin':
include/linux/kcsan-checks.h:199:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
199 | static inline void kcsan_nestable_atomic_begin(void) { }
| ^~~~~~
include/linux/kcsan-checks.h: In function 'kcsan_nestable_atomic_end':
include/linux/kcsan-checks.h:200:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
200 | static inline void kcsan_nestable_atomic_end(void) { }
| ^~~~~~
include/linux/kcsan-checks.h: In function 'kcsan_flat_atomic_begin':
include/linux/kcsan-checks.h:201:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
201 | static inline void kcsan_flat_atomic_begin(void) { }
| ^~~~~~
include/linux/kcsan-checks.h: In function 'kcsan_flat_atomic_end':
include/linux/kcsan-checks.h:202:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
202 | static inline void kcsan_flat_atomic_end(void) { }
| ^~~~~~
include/linux/kcsan-checks.h: In function 'kcsan_atomic_next':
include/linux/kcsan-checks.h:203:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
203 | static inline void kcsan_atomic_next(int n) { }
| ^~~~~~
include/linux/kcsan-checks.h: In function 'kcsan_set_access_mask':
include/linux/kcsan-checks.h:204:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
204 | static inline void kcsan_set_access_mask(unsigned long mask) { }
| ^~~~~~
include/linux/kcsan-checks.h: In function 'kcsan_begin_scoped_access':
include/linux/kcsan-checks.h:210:34: error: '-mindirect-branch' and '-fcf-protection' are not compatible
210 | struct kcsan_scoped_access *sa) { return sa; }
| ^~~~~~~~~~~~~~~~~~~
include/linux/kcsan-checks.h: In function 'kcsan_end_scoped_access':
include/linux/kcsan-checks.h:211:51: error: '-mindirect-branch' and '-fcf-protection' are not compatible
211 | static inline void kcsan_end_scoped_access(struct kcsan_scoped_access *sa) { }
| ^~~~~~~~~~~~~~~~~~~
include/linux/kcsan-checks.h: In function 'kcsan_check_access':
include/linux/kcsan-checks.h:230:39: error: '-mindirect-branch' and '-fcf-protection' are not compatible
230 | int type) { }
| ^~~
include/linux/kcsan-checks.h: In function '__kcsan_enable_current':
include/linux/kcsan-checks.h:231:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
231 | static inline void __kcsan_enable_current(void) { }
| ^~~~~~
include/linux/kcsan-checks.h: In function '__kcsan_disable_current':
include/linux/kcsan-checks.h:232:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
--
include/linux/find.h: In function 'find_first_bit':
include/linux/find.h:207:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
207 | {
| ^
include/linux/find.h: In function 'find_nth_bit':
include/linux/find.h:233:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
233 | {
| ^
include/linux/find.h: In function 'find_nth_and_bit':
include/linux/find.h:259:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
259 | {
| ^
include/linux/find.h: In function 'find_nth_and_andnot_bit':
include/linux/find.h:289:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
289 | {
| ^
include/linux/find.h: In function 'find_first_and_bit':
include/linux/find.h:316:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
316 | {
| ^
include/linux/find.h: In function 'find_first_andnot_bit':
include/linux/find.h:340:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
340 | {
| ^
include/linux/find.h: In function 'find_first_and_and_bit':
include/linux/find.h:365:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
365 | {
| ^
include/linux/find.h: In function 'find_first_zero_bit':
include/linux/find.h:386:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
386 | {
| ^
include/linux/find.h: In function 'find_last_bit':
include/linux/find.h:407:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
407 | {
| ^
include/linux/find.h: In function 'find_next_and_bit_wrap':
include/linux/find.h:432:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
432 | {
| ^
include/linux/find.h: In function 'find_next_bit_wrap':
include/linux/find.h:454:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
454 | {
| ^
include/linux/find.h: In function '__for_each_wrap':
include/linux/find.h:471:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
471 | {
| ^
include/linux/find.h: In function 'find_next_zero_bit_le':
include/linux/find.h:511:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
511 | {
| ^
include/linux/find.h: In function 'find_next_bit_le':
include/linux/find.h:517:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
517 | {
| ^
include/linux/find.h: In function 'find_first_zero_bit_le':
include/linux/find.h:523:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
523 | {
| ^
In file included from include/linux/bitmap.h:13:
include/linux/string.h: In function 'memdup_array_user':
include/linux/string.h:33:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
33 | {
| ^
include/linux/string.h: In function 'vmemdup_array_user':
include/linux/string.h:53:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
53 | {
| ^
include/linux/string.h: In function 'strstrip':
include/linux/string.h:190:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
190 | {
| ^
include/linux/string.h: In function 'memset_l':
include/linux/string.h:237:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
237 | {
| ^
include/linux/string.h: In function 'memset_p':
include/linux/string.h:245:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
245 | {
| ^
include/linux/string.h: In function 'mem_is_zero':
include/linux/string.h:295:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
295 | {
| ^
include/linux/string.h: In function '__free_argv_free':
include/linux/string.h:316:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
316 | DEFINE_FREE(argv_free, char **, if (!IS_ERR_OR_NULL(_T)) argv_free(_T))
| ^~~~~~~~~~~
include/linux/string.h: In function 'memzero_explicit':
include/linux/string.h:365:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
365 | {
| ^
include/linux/string.h: In function 'kbasename':
include/linux/string.h:380:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
380 | {
| ^
In file included from include/linux/fortify-string.h:5,
from include/linux/string.h:386:
include/linux/bitfield.h: In function 'field_multiplier':
>> include/linux/bitfield.h:202:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
202 | {
| ^
include/linux/bitfield.h: In function 'field_mask':
include/linux/bitfield.h:208:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
208 | {
| ^
include/linux/bitfield.h: In function 'u8_encode_bits':
include/linux/bitfield.h:237:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
237 | ____MAKE_OP(u8,u8,,)
| ^~~~~~~~~~~
include/linux/bitfield.h: In function 'u8_replace_bits':
include/linux/bitfield.h:237:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
include/linux/bitfield.h: In function 'u8p_replace_bits':
include/linux/bitfield.h:237:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
include/linux/bitfield.h: In function 'u8_get_bits':
include/linux/bitfield.h:237:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
include/linux/bitfield.h: In function 'le16_encode_bits':
include/linux/bitfield.h:238:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
238 | __MAKE_OP(16)
| ^~~~~~~~~
include/linux/bitfield.h: In function 'le16_replace_bits':
include/linux/bitfield.h:238:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
include/linux/bitfield.h: In function 'le16p_replace_bits':
include/linux/bitfield.h:238:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
include/linux/bitfield.h: In function 'le16_get_bits':
include/linux/bitfield.h:238:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
include/linux/bitfield.h: In function 'be16_encode_bits':
include/linux/bitfield.h:238:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
include/linux/bitfield.h: In function 'be16_replace_bits':
include/linux/bitfield.h:238:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
include/linux/bitfield.h: In function 'be16p_replace_bits':
include/linux/bitfield.h:238:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
include/linux/bitfield.h: In function 'be16_get_bits':
include/linux/bitfield.h:238:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
include/linux/bitfield.h: In function 'u16_encode_bits':
include/linux/bitfield.h:238:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
include/linux/bitfield.h: In function 'u16_replace_bits':
include/linux/bitfield.h:238:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
include/linux/bitfield.h: In function 'u16p_replace_bits':
include/linux/bitfield.h:238:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
include/linux/bitfield.h: In function 'u16_get_bits':
include/linux/bitfield.h:238:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
include/linux/bitfield.h: In function 'le32_encode_bits':
include/linux/bitfield.h:239:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
239 | __MAKE_OP(32)
| ^~~~~~~~~
include/linux/bitfield.h: In function 'le32_replace_bits':
include/linux/bitfield.h:239:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
include/linux/bitfield.h: In function 'le32p_replace_bits':
include/linux/bitfield.h:239:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
include/linux/bitfield.h: In function 'le32_get_bits':
include/linux/bitfield.h:239:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
include/linux/bitfield.h: In function 'be32_encode_bits':
include/linux/bitfield.h:239:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
include/linux/bitfield.h: In function 'be32_replace_bits':
include/linux/bitfield.h:239:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
include/linux/bitfield.h: In function 'be32p_replace_bits':
include/linux/bitfield.h:239:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
include/linux/bitfield.h: In function 'be32_get_bits':
include/linux/bitfield.h:239:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
include/linux/bitfield.h: In function 'u32_encode_bits':
include/linux/bitfield.h:239:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
include/linux/bitfield.h: In function 'u32_replace_bits':
include/linux/bitfield.h:239:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
include/linux/bitfield.h: In function 'u32p_replace_bits':
include/linux/bitfield.h:239:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
include/linux/bitfield.h: In function 'u32_get_bits':
include/linux/bitfield.h:239:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
include/linux/bitfield.h: In function 'le64_encode_bits':
include/linux/bitfield.h:240:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
240 | __MAKE_OP(64)
| ^~~~~~~~~
include/linux/bitfield.h: In function 'le64_replace_bits':
include/linux/bitfield.h:240:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
include/linux/bitfield.h: In function 'le64p_replace_bits':
include/linux/bitfield.h:240:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
include/linux/bitfield.h: In function 'le64_get_bits':
include/linux/bitfield.h:240:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
include/linux/bitfield.h: In function 'be64_encode_bits':
include/linux/bitfield.h:240:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
include/linux/bitfield.h: In function 'be64_replace_bits':
include/linux/bitfield.h:240:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
include/linux/bitfield.h: In function 'be64p_replace_bits':
include/linux/bitfield.h:240:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
include/linux/bitfield.h: In function 'be64_get_bits':
include/linux/bitfield.h:240:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
include/linux/bitfield.h: In function 'u64_encode_bits':
include/linux/bitfield.h:240:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
include/linux/bitfield.h: In function 'u64_replace_bits':
include/linux/bitfield.h:240:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
include/linux/bitfield.h: In function 'u64p_replace_bits':
include/linux/bitfield.h:240:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
include/linux/bitfield.h: In function 'u64_get_bits':
include/linux/bitfield.h:240:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
include/linux/fortify-string.h: In function 'strncpy':
include/linux/fortify-string.h:198:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
198 | {
| ^
include/linux/fortify-string.h: In function 'strnlen':
include/linux/fortify-string.h:220:1: error: '-mindirect-branch' and '-fcf-protection' are not compatible
..
vim +237 include/linux/compiler-context-analysis.h
3269701cb25662 Marco Elver 2025-12-19 221
3269701cb25662 Marco Elver 2025-12-19 222 /**
3269701cb25662 Marco Elver 2025-12-19 223 * context_unsafe_alias() - helper to insert a context lock "alias barrier"
3269701cb25662 Marco Elver 2025-12-19 224 * @p: pointer aliasing a context lock or object containing context locks
3269701cb25662 Marco Elver 2025-12-19 225 *
3269701cb25662 Marco Elver 2025-12-19 226 * No-op function that acts as a "context lock alias barrier", where the
3269701cb25662 Marco Elver 2025-12-19 227 * analysis rightfully detects that we're switching aliases, but the switch is
3269701cb25662 Marco Elver 2025-12-19 228 * considered safe but beyond the analysis reasoning abilities.
3269701cb25662 Marco Elver 2025-12-19 229 *
3269701cb25662 Marco Elver 2025-12-19 230 * This should be inserted before the first use of such an alias.
3269701cb25662 Marco Elver 2025-12-19 231 *
3269701cb25662 Marco Elver 2025-12-19 232 * Implementation Note: The compiler ignores aliases that may be reassigned but
3269701cb25662 Marco Elver 2025-12-19 233 * their value cannot be determined (e.g. when passing a non-const pointer to an
3269701cb25662 Marco Elver 2025-12-19 234 * alias as a function argument).
3269701cb25662 Marco Elver 2025-12-19 235 */
3269701cb25662 Marco Elver 2025-12-19 236 #define context_unsafe_alias(p) _context_unsafe_alias((void **)&(p))
3269701cb25662 Marco Elver 2025-12-19 @237 static inline void _context_unsafe_alias(void **p) { }
3269701cb25662 Marco Elver 2025-12-19 238
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
next prev parent reply other threads:[~2026-01-18 2:17 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-16 20:40 [PATCH v2 0/3] tip:x86/entry: fix vdso build restructuring fallout H. Peter Anvin
2026-01-16 20:40 ` [PATCH v2 1/3] x86/entry/vdso: update the object paths for "make vdso_install" H. Peter Anvin
2026-01-16 21:46 ` [tip: x86/entry] x86/entry/vdso: Update " tip-bot2 for H. Peter Anvin
2026-01-16 20:40 ` [PATCH v2 2/3] x86/entry/vdso: fix filtering of vdso compiler flags H. Peter Anvin
2026-01-16 21:46 ` [tip: x86/entry] x86/entry/vdso: Fix " tip-bot2 for H. Peter Anvin
2026-01-18 2:17 ` kernel test robot [this message]
2026-01-18 5:19 ` [PATCH v2 2/3] x86/entry/vdso: fix " H. Peter Anvin
2026-01-16 20:40 ` [PATCH v2 3/3] x86/entry/vdso, selftest: update location of vgetrandom-chacha.S H. Peter Anvin
2026-01-16 21:46 ` [tip: x86/entry] x86/entry/vdso/selftest: Update " tip-bot2 for H. Peter Anvin
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