Hi Andrey, I love your patch! Yet something to improve: [auto build test ERROR on linus/master] [also build test ERROR on v4.16-rc6] [cannot apply to next-20180319] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Abbott-Liu/KASan-for-arm/20180319-120138 config: arm-allmodconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # save the attached .config to linux build tree make.cross ARCH=arm All errors (new ones prefixed by >>): arch/arm/kernel/entry-common.S: Assembler messages: >> arch/arm/kernel/entry-common.S:85: Error: invalid constant (ffffffffb6e00000) after fixup vim +85 arch/arm/kernel/entry-common.S ^1da177e4 Linus Torvalds 2005-04-16 68 3302caddf Russell King 2015-08-20 69 /* Ok, we need to do extra processing, enter the slow path. */ ^1da177e4 Linus Torvalds 2005-04-16 70 fast_work_pending: ^1da177e4 Linus Torvalds 2005-04-16 71 str r0, [sp, #S_R0+S_OFF]! @ returned r0 3302caddf Russell King 2015-08-20 72 /* fall through to work_pending */ 3302caddf Russell King 2015-08-20 73 #else 3302caddf Russell King 2015-08-20 74 /* 3302caddf Russell King 2015-08-20 75 * The "replacement" ret_fast_syscall for when tracing or context tracking 3302caddf Russell King 2015-08-20 76 * is enabled. As we will need to call out to some C functions, we save 3302caddf Russell King 2015-08-20 77 * r0 first to avoid needing to save registers around each C function call. 3302caddf Russell King 2015-08-20 78 */ 3302caddf Russell King 2015-08-20 79 ret_fast_syscall: 3302caddf Russell King 2015-08-20 80 UNWIND(.fnstart ) 3302caddf Russell King 2015-08-20 81 UNWIND(.cantunwind ) 3302caddf Russell King 2015-08-20 82 str r0, [sp, #S_R0 + S_OFF]! @ save returned r0 3302caddf Russell King 2015-08-20 83 disable_irq_notrace @ disable interrupts e33f8d326 Thomas Garnier 2017-09-07 84 ldr r2, [tsk, #TI_ADDR_LIMIT] e33f8d326 Thomas Garnier 2017-09-07 @85 cmp r2, #TASK_SIZE e33f8d326 Thomas Garnier 2017-09-07 86 blne addr_limit_check_failed 3302caddf Russell King 2015-08-20 87 ldr r1, [tsk, #TI_FLAGS] @ re-check for syscall tracing 2404269bc Thomas Garnier 2017-09-07 88 tst r1, #_TIF_SYSCALL_WORK | _TIF_WORK_MASK 3302caddf Russell King 2015-08-20 89 beq no_work_pending 3302caddf Russell King 2015-08-20 90 UNWIND(.fnend ) 3302caddf Russell King 2015-08-20 91 ENDPROC(ret_fast_syscall) 3302caddf Russell King 2015-08-20 92 3302caddf Russell King 2015-08-20 93 /* Slower path - fall through to work_pending */ 3302caddf Russell King 2015-08-20 94 #endif 3302caddf Russell King 2015-08-20 95 3302caddf Russell King 2015-08-20 96 tst r1, #_TIF_SYSCALL_WORK 3302caddf Russell King 2015-08-20 97 bne __sys_trace_return_nosave 3302caddf Russell King 2015-08-20 98 slow_work_pending: ^1da177e4 Linus Torvalds 2005-04-16 99 mov r0, sp @ 'regs' ^1da177e4 Linus Torvalds 2005-04-16 100 mov r2, why @ 'syscall' 0a267fa6a Al Viro 2012-07-19 101 bl do_work_pending 662852178 Al Viro 2012-07-19 102 cmp r0, #0 81783786d Al Viro 2012-07-19 103 beq no_work_pending 662852178 Al Viro 2012-07-19 104 movlt scno, #(__NR_restart_syscall - __NR_SYSCALL_BASE) 81783786d Al Viro 2012-07-19 105 ldmia sp, {r0 - r6} @ have to reload r0 - r6 81783786d Al Viro 2012-07-19 106 b local_restart @ ... and off we go e83dd3770 Drew Richardson 2015-08-06 107 ENDPROC(ret_fast_syscall) 81783786d Al Viro 2012-07-19 108 :::::: The code at line 85 was first introduced by commit :::::: e33f8d32677fa4f4f8996ef46748f86aac81ccff arm/syscalls: Optimize address limit check :::::: TO: Thomas Garnier <thgarnie@xxxxxxxxxx> :::::: CC: Thomas Gleixner <tglx@xxxxxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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