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SubjectRe: [PATCH v12 3/7] kasan: Add report for async mode
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On 2/9/21 7:39 AM, kernel test robot wrote:
> Hi Vincenzo,
>
> I love your patch! Yet something to improve:
>
> [auto build test ERROR on next-20210125]
> [cannot apply to arm64/for-next/core xlnx/master arm/for-next soc/for-next kvmarm/next linus/master hnaz-linux-mm/master v5.11-rc6 v5.11-rc5 v5.11-rc4 v5.11-rc6]

The patches are based on linux-next/akpm and since they depend on some patches
present on that tree, can be applied only on linux-next/akpm and linux-next/master.

The dependency is reported in the cover letter.

Thanks,
Vincenzo

> [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]
>
> url: https://github.com/0day-ci/linux/commits/Vincenzo-Frascino/arm64-ARMv8-5-A-MTE-Add-async-mode-support/20210209-080907
> base: 59fa6a163ffabc1bf25c5e0e33899e268a96d3cc
> config: x86_64-randconfig-s021-20210209 (attached as .config)
> compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
> reproduce:
> # apt-get install sparse
> # sparse version: v0.6.3-215-g0fb77bb6-dirty
> # https://github.com/0day-ci/linux/commit/93bd347e4877e3616f7db64f488ebb469718dd68
> git remote add linux-review https://github.com/0day-ci/linux
> git fetch --no-tags linux-review Vincenzo-Frascino/arm64-ARMv8-5-A-MTE-Add-async-mode-support/20210209-080907
> git checkout 93bd347e4877e3616f7db64f488ebb469718dd68
> # save the attached .config to linux build tree
> make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=x86_64
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@intel.com>
>
> All errors (new ones prefixed by >>):
>
> ld: mm/kasan/report.o: in function `end_report':
>>> mm/kasan/report.c:90: undefined reference to `kasan_flag_async'
>>> ld: mm/kasan/report.c:90: undefined reference to `kasan_flag_async'
>
>
> vim +90 mm/kasan/report.c
>
> 87
> 88 static void end_report(unsigned long *flags, unsigned long addr)
> 89 {
> > 90 if (!kasan_flag_async)
> 91 trace_error_report_end(ERROR_DETECTOR_KASAN, addr);
> 92 pr_err("==================================================================\n");
> 93 add_taint(TAINT_BAD_PAGE, LOCKDEP_NOW_UNRELIABLE);
> 94 spin_unlock_irqrestore(&report_lock, *flags);
> 95 if (panic_on_warn && !test_bit(KASAN_BIT_MULTI_SHOT, &kasan_flags)) {
> 96 /*
> 97 * This thread may hit another WARN() in the panic path.
> 98 * Resetting this prevents additional WARN() from panicking the
> 99 * system on this thread. Other threads are blocked by the
> 100 * panic_mutex in panic().
> 101 */
> 102 panic_on_warn = 0;
> 103 panic("panic_on_warn set ...\n");
> 104 }
> 105 #ifdef CONFIG_KASAN_HW_TAGS
> 106 if (kasan_flag_panic)
> 107 panic("kasan.fault=panic set ...\n");
> 108 #endif
> 109 kasan_enable_current();
> 110 }
> 111
>
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
>

--
Regards,
Vincenzo

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