Hi "Stephan, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on char-misc/char-misc-testing] [also build test WARNING on cryptodev/master crypto/master v5.5-rc5 next-20200110] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system. BTW, we also suggest to use '--base' option to specify the base tree in git format-patch, please see https://stackoverflow.com/a/37406982] url: https://github.com/0day-ci/linux/commits/Stephan-M-ller/dev-random-a-new-approach-with-full-SP800-90B/20200110-084934 base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git 68faa679b8be1a74e6663c21c3a9d25d32f1c079 reproduce: # apt-get install sparse # sparse version: v0.6.1-129-g341daf20-dirty make ARCH=x86_64 allmodconfig make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) >> drivers/char/lrng/lrng_internal.h:239:39: sparse: sparse: context imbalance in 'lrng_drng_switch' - unexpected unlock vim +/lrng_drng_switch +239 drivers/char/lrng/lrng_internal.h 58c283819a1e87 Stephan Müller 2020-01-09 233 58c283819a1e87 Stephan Müller 2020-01-09 234 /* Unlock the DRNG */ 58c283819a1e87 Stephan Müller 2020-01-09 235 static __always_inline void lrng_drng_unlock(struct lrng_drng *drng, 58c283819a1e87 Stephan Müller 2020-01-09 236 unsigned long *flags) 58c283819a1e87 Stephan Müller 2020-01-09 237 { 58c283819a1e87 Stephan Müller 2020-01-09 238 if (lrng_drng_is_atomic(drng)) 58c283819a1e87 Stephan Müller 2020-01-09 @239 spin_unlock_irqrestore(&drng->spin_lock, *flags); 58c283819a1e87 Stephan Müller 2020-01-09 240 else 58c283819a1e87 Stephan Müller 2020-01-09 241 mutex_unlock(&drng->lock); 58c283819a1e87 Stephan Müller 2020-01-09 242 } 58c283819a1e87 Stephan Müller 2020-01-09 243 :::::: The code at line 239 was first introduced by commit :::::: 58c283819a1e879bc2e30d05720285f9709f7f6d Linux Random Number Generator :::::: TO: Stephan Müller <smueller@xxxxxxxxxx> :::::: CC: 0day robot <lkp@xxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx Intel Corporation
