tree: git://git.cmpxchg.org/linux-mmotm.git master
head: 0f654f0e7a2b2fc05d4d5896e09e8048d16d5ed9
commit: 2ec49283a1aa37520eed1b3c8106700e56f61713 [319/413] kprobes: move kprobe declarations to asm-generic/kprobes.h
config: arm64-allyesconfig (attached as .config)
compiler: aarch64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout 2ec49283a1aa37520eed1b3c8106700e56f61713
# save the attached .config to linux build tree
make.cross ARCH=arm64
All errors (new ones prefixed by >>):
>> arch/arm64/kernel/armv8_deprecated.c:359:31: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'aarch32_check_condition'
static unsigned int __kprobes aarch32_check_condition(u32 opcode, u32 psr)
^~~~~~~~~~~~~~~~~~~~~~~
arch/arm64/kernel/armv8_deprecated.c: In function 'swp_handler':
>> arch/arm64/kernel/armv8_deprecated.c:386:10: error: implicit declaration of function 'aarch32_check_condition' [-Werror=implicit-function-declaration]
switch (aarch32_check_condition(instr, regs->pstate)) {
^~~~~~~~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors
vim +359 arch/arm64/kernel/armv8_deprecated.c
bca8f17f Marc Zyngier 2016-12-01 353 #define ARM_OPCODE_CONDTEST_FAIL 0
bca8f17f Marc Zyngier 2016-12-01 354 #define ARM_OPCODE_CONDTEST_PASS 1
bca8f17f Marc Zyngier 2016-12-01 355 #define ARM_OPCODE_CONDTEST_UNCOND 2
bca8f17f Marc Zyngier 2016-12-01 356
2af3ec08 David A. Long 2016-07-08 357 #define ARM_OPCODE_CONDITION_UNCOND 0xf
2af3ec08 David A. Long 2016-07-08 358
2af3ec08 David A. Long 2016-07-08 @359 static unsigned int __kprobes aarch32_check_condition(u32 opcode, u32 psr)
2af3ec08 David A. Long 2016-07-08 360 {
2af3ec08 David A. Long 2016-07-08 361 u32 cc_bits = opcode >> 28;
2af3ec08 David A. Long 2016-07-08 362
2af3ec08 David A. Long 2016-07-08 363 if (cc_bits != ARM_OPCODE_CONDITION_UNCOND) {
2af3ec08 David A. Long 2016-07-08 364 if ((*aarch32_opcode_cond_checks[cc_bits])(psr))
2af3ec08 David A. Long 2016-07-08 365 return ARM_OPCODE_CONDTEST_PASS;
2af3ec08 David A. Long 2016-07-08 366 else
2af3ec08 David A. Long 2016-07-08 367 return ARM_OPCODE_CONDTEST_FAIL;
2af3ec08 David A. Long 2016-07-08 368 }
2af3ec08 David A. Long 2016-07-08 369 return ARM_OPCODE_CONDTEST_UNCOND;
2af3ec08 David A. Long 2016-07-08 370 }
2af3ec08 David A. Long 2016-07-08 371
bd35a4ad Punit Agrawal 2014-11-18 372 /*
bd35a4ad Punit Agrawal 2014-11-18 373 * swp_handler logs the id of calling process, dissects the instruction, sanity
bd35a4ad Punit Agrawal 2014-11-18 374 * checks the memory location, calls emulate_swpX for the actual operation and
bd35a4ad Punit Agrawal 2014-11-18 375 * deals with fixup/error handling before returning
bd35a4ad Punit Agrawal 2014-11-18 376 */
bd35a4ad Punit Agrawal 2014-11-18 377 static int swp_handler(struct pt_regs *regs, u32 instr)
bd35a4ad Punit Agrawal 2014-11-18 378 {
bd35a4ad Punit Agrawal 2014-11-18 379 u32 destreg, data, type, address = 0;
bd35a4ad Punit Agrawal 2014-11-18 380 int rn, rt2, res = 0;
bd35a4ad Punit Agrawal 2014-11-18 381
bd35a4ad Punit Agrawal 2014-11-18 382 perf_sw_event(PERF_COUNT_SW_EMULATION_FAULTS, 1, regs, regs->pc);
bd35a4ad Punit Agrawal 2014-11-18 383
bd35a4ad Punit Agrawal 2014-11-18 384 type = instr & TYPE_SWPB;
bd35a4ad Punit Agrawal 2014-11-18 385
2af3ec08 David A. Long 2016-07-08 @386 switch (aarch32_check_condition(instr, regs->pstate)) {
bd35a4ad Punit Agrawal 2014-11-18 387 case ARM_OPCODE_CONDTEST_PASS:
bd35a4ad Punit Agrawal 2014-11-18 388 break;
bd35a4ad Punit Agrawal 2014-11-18 389 case ARM_OPCODE_CONDTEST_FAIL:
:::::: The code at line 359 was first introduced by commit
:::::: 2af3ec08b414ceb9c32fad2bb0f87252f3f18de8 arm64: add conditional instruction simulation support
:::::: TO: David A. Long <dave.long@xxxxxxxxxx>
:::::: CC: Catalin Marinas <catalin.marinas@xxxxxxx>
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0-DAY kernel test infrastructure Open Source Technology Center
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