* [arnd-playground:y2038-5.4-rc4 133/264] arch/x86/kernel/ioport.c:99:1: error: unsupported size for integer register
@ 2019-11-06 8:38 kbuild test robot
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From: kbuild test robot @ 2019-11-06 8:38 UTC (permalink / raw)
To: kbuild-all
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/arnd/playground.git y2038-5.4-rc4
head: f42cacd62588facdaaa952c30c33e160ab6e116b
commit: 78846d536689e1c25666b76356509166ddb7eec3 [133/264] x86: percpu: fix clang 32-bit build
config: i386-randconfig-e001-201944 (attached as .config)
compiler: gcc-7 (Debian 7.4.0-14) 7.4.0
reproduce:
git checkout 78846d536689e1c25666b76356509166ddb7eec3
# save the attached .config to linux build tree
make ARCH=i386
If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
arch/x86/kernel/ioport.c: In function 'ksys_ioperm':
>> arch/x86/kernel/ioport.c:99:1: error: unsupported size for integer register
}
^
--
arch/x86/kernel/process.c: In function '__switch_to_xtra':
>> arch/x86/kernel/process.c:538:1: error: unsupported size for integer register
}
^
--
arch/x86/kernel/cpu/intel_epb.c: In function 'intel_epb_restore':
>> arch/x86/kernel/cpu/intel_epb.c:98:1: error: unsupported size for integer register
}
^
--
arch/x86/kernel/fpu/core.c: In function 'kernel_fpu_begin':
>> arch/x86/kernel/fpu/core.c:104:1: error: unsupported size for integer register
}
^
vim +99 arch/x86/kernel/ioport.c
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 23
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 24 /*
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 25 * this changes the io permissions bitmap in the current task.
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 26 */
66f4e88cc69da7 arch/x86/kernel/ioport.c Dominik Brodowski 2018-03-11 27 long ksys_ioperm(unsigned long from, unsigned long num, int turn_on)
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 28 {
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 29 struct thread_struct *t = ¤t->thread;
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 30 struct tss_struct *tss;
ccafa59a0061d7 arch/x86/kernel/ioport.c mboton(a)gmail.com 2008-01-30 31 unsigned int i, max_long, bytes, bytes_updated;
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 32
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 33 if ((from + num <= from) || (from + num > IO_BITMAP_BITS))
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 34 return -EINVAL;
96c4f67293e4cd arch/x86/kernel/ioport.c Matthew Garrett 2019-08-19 35 if (turn_on && (!capable(CAP_SYS_RAWIO) ||
96c4f67293e4cd arch/x86/kernel/ioport.c Matthew Garrett 2019-08-19 36 security_locked_down(LOCKDOWN_IOPORT)))
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 37 return -EPERM;
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 38
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 39 /*
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 40 * If it's the first ioperm() call in this thread's lifetime, set the
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 41 * IO bitmap up. ioperm() is much less timing critical than clone(),
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 42 * this is why we delay this operation until now:
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 43 */
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 44 if (!t->io_bitmap_ptr) {
9a211abeaab74e arch/x86/kernel/ioport_32.c Thomas Gleixner 2008-01-30 45 unsigned long *bitmap = kmalloc(IO_BITMAP_BYTES, GFP_KERNEL);
9a211abeaab74e arch/x86/kernel/ioport_32.c Thomas Gleixner 2008-01-30 46
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 47 if (!bitmap)
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 48 return -ENOMEM;
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 49
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 50 memset(bitmap, 0xff, IO_BITMAP_BYTES);
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 51 t->io_bitmap_ptr = bitmap;
b3cf257623fabd arch/i386/kernel/ioport.c Stephane Eranian 2006-07-09 52 set_thread_flag(TIF_IO_BITMAP);
b7ffc44d5b2ea1 arch/x86/kernel/ioport.c Andy Lutomirski 2017-02-20 53
b7ceaec112aa35 arch/x86/kernel/ioport.c Andy Lutomirski 2017-02-22 54 /*
b7ceaec112aa35 arch/x86/kernel/ioport.c Andy Lutomirski 2017-02-22 55 * Now that we have an IO bitmap, we need our TSS limit to be
b7ceaec112aa35 arch/x86/kernel/ioport.c Andy Lutomirski 2017-02-22 56 * correct. It's fine if we are preempted after doing this:
b7ceaec112aa35 arch/x86/kernel/ioport.c Andy Lutomirski 2017-02-22 57 * with TIF_IO_BITMAP set, context switches will keep our TSS
b7ceaec112aa35 arch/x86/kernel/ioport.c Andy Lutomirski 2017-02-22 58 * limit correct.
b7ceaec112aa35 arch/x86/kernel/ioport.c Andy Lutomirski 2017-02-22 59 */
b7ffc44d5b2ea1 arch/x86/kernel/ioport.c Andy Lutomirski 2017-02-20 60 preempt_disable();
b7ceaec112aa35 arch/x86/kernel/ioport.c Andy Lutomirski 2017-02-22 61 refresh_tss_limit();
b7ffc44d5b2ea1 arch/x86/kernel/ioport.c Andy Lutomirski 2017-02-20 62 preempt_enable();
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 63 }
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 64
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 65 /*
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 66 * do it in the per-thread copy and in the TSS ...
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 67 *
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 68 * Disable preemption via get_cpu() - we must not switch away
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 69 * because the ->io_bitmap_max value must match the bitmap
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 70 * contents:
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 71 */
c482feefe1aeb1 arch/x86/kernel/ioport.c Andy Lutomirski 2017-12-04 72 tss = &per_cpu(cpu_tss_rw, get_cpu());
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 73
da1016df85ed67 arch/x86/kernel/ioport.c Akinobu Mita 2011-02-16 74 if (turn_on)
da1016df85ed67 arch/x86/kernel/ioport.c Akinobu Mita 2011-02-16 75 bitmap_clear(t->io_bitmap_ptr, from, num);
da1016df85ed67 arch/x86/kernel/ioport.c Akinobu Mita 2011-02-16 76 else
da1016df85ed67 arch/x86/kernel/ioport.c Akinobu Mita 2011-02-16 77 bitmap_set(t->io_bitmap_ptr, from, num);
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 78
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 79 /*
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 80 * Search for a (possibly new) maximum. This is simple and stupid,
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 81 * to keep it obviously correct:
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 82 */
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 83 max_long = 0;
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 84 for (i = 0; i < IO_BITMAP_LONGS; i++)
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 85 if (t->io_bitmap_ptr[i] != ~0UL)
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 86 max_long = i;
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 87
ccafa59a0061d7 arch/x86/kernel/ioport.c mboton(a)gmail.com 2008-01-30 88 bytes = (max_long + 1) * sizeof(unsigned long);
ccafa59a0061d7 arch/x86/kernel/ioport.c mboton(a)gmail.com 2008-01-30 89 bytes_updated = max(bytes, t->io_bitmap_max);
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 90
ccafa59a0061d7 arch/x86/kernel/ioport.c mboton(a)gmail.com 2008-01-30 91 t->io_bitmap_max = bytes;
ccafa59a0061d7 arch/x86/kernel/ioport.c mboton(a)gmail.com 2008-01-30 92
ccafa59a0061d7 arch/x86/kernel/ioport.c mboton(a)gmail.com 2008-01-30 93 /* Update the TSS: */
ccafa59a0061d7 arch/x86/kernel/ioport.c mboton(a)gmail.com 2008-01-30 94 memcpy(tss->io_bitmap, t->io_bitmap_ptr, bytes_updated);
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 95
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 96 put_cpu();
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 97
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 98 return 0;
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 @99 }
^1da177e4c3f41 arch/i386/kernel/ioport.c Linus Torvalds 2005-04-16 100
:::::: The code at line 99 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2
:::::: TO: Linus Torvalds <torvalds@ppc970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@ppc970.osdl.org>
---
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