Hi Jia-Ju, [auto build test WARNING on wireless-drivers-next/master] [also build test WARNING on v4.12-rc3 next-20170601] [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/Jia-Ju-Bai/b43legacy-Fix-a-sleep-in-atomic-bug-in-b43legacy_attr_interfmode_store/20170531-192639 base: https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next.git master config: x86_64-randconfig-a0-06020536 (attached as .config) compiler: gcc-4.4 (Debian 4.4.7-8) 4.4.7 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All warnings (new ones prefixed by >>): drivers/net/wireless/broadcom/b43legacy/sysfs.c: In function 'b43legacy_attr_interfmode_store': >> drivers/net/wireless/broadcom/b43legacy/sysfs.c:114: warning: unused variable 'flags' vim +/flags +114 drivers/net/wireless/broadcom/b43legacy/sysfs.c 75388acd drivers/net/wireless/b43legacy/sysfs.c Larry Finger 2007-09-25 98 " Mitigation)\n"); 75388acd drivers/net/wireless/b43legacy/sysfs.c Larry Finger 2007-09-25 99 break; 75388acd drivers/net/wireless/b43legacy/sysfs.c Larry Finger 2007-09-25 100 default: 75388acd drivers/net/wireless/b43legacy/sysfs.c Larry Finger 2007-09-25 101 B43legacy_WARN_ON(1); 75388acd drivers/net/wireless/b43legacy/sysfs.c Larry Finger 2007-09-25 102 } 75388acd drivers/net/wireless/b43legacy/sysfs.c Larry Finger 2007-09-25 103 75388acd drivers/net/wireless/b43legacy/sysfs.c Larry Finger 2007-09-25 104 mutex_unlock(&wldev->wl->mutex); 75388acd drivers/net/wireless/b43legacy/sysfs.c Larry Finger 2007-09-25 105 75388acd drivers/net/wireless/b43legacy/sysfs.c Larry Finger 2007-09-25 106 return count; 75388acd drivers/net/wireless/b43legacy/sysfs.c Larry Finger 2007-09-25 107 } 75388acd drivers/net/wireless/b43legacy/sysfs.c Larry Finger 2007-09-25 108 75388acd drivers/net/wireless/b43legacy/sysfs.c Larry Finger 2007-09-25 109 static ssize_t b43legacy_attr_interfmode_store(struct device *dev, 75388acd drivers/net/wireless/b43legacy/sysfs.c Larry Finger 2007-09-25 110 struct device_attribute *attr, 75388acd drivers/net/wireless/b43legacy/sysfs.c Larry Finger 2007-09-25 111 const char *buf, size_t count) 75388acd drivers/net/wireless/b43legacy/sysfs.c Larry Finger 2007-09-25 112 { 75388acd drivers/net/wireless/b43legacy/sysfs.c Larry Finger 2007-09-25 113 struct b43legacy_wldev *wldev = dev_to_b43legacy_wldev(dev); 75388acd drivers/net/wireless/b43legacy/sysfs.c Larry Finger 2007-09-25 @114 unsigned long flags; 75388acd drivers/net/wireless/b43legacy/sysfs.c Larry Finger 2007-09-25 115 int err; 75388acd drivers/net/wireless/b43legacy/sysfs.c Larry Finger 2007-09-25 116 int mode; 75388acd drivers/net/wireless/b43legacy/sysfs.c Larry Finger 2007-09-25 117 75388acd drivers/net/wireless/b43legacy/sysfs.c Larry Finger 2007-09-25 118 if (!capable(CAP_NET_ADMIN)) 75388acd drivers/net/wireless/b43legacy/sysfs.c Larry Finger 2007-09-25 119 return -EPERM; 75388acd drivers/net/wireless/b43legacy/sysfs.c Larry Finger 2007-09-25 120 75388acd drivers/net/wireless/b43legacy/sysfs.c Larry Finger 2007-09-25 121 mode = get_integer(buf, count); 75388acd drivers/net/wireless/b43legacy/sysfs.c Larry Finger 2007-09-25 122 switch (mode) { :::::: The code at line 114 was first introduced by commit :::::: 75388acd0cd827dc1498043daa7d1c760902cd67 [B43LEGACY]: add mac80211-based driver for legacy BCM43xx devices :::::: TO: Larry Finger <Larry.Finger@xxxxxxxxxxxx> :::::: CC: David S. Miller <davem@xxxxxxxxxxxxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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