Hi Arend, [auto build test WARNING on mac80211-next/master] [cannot apply to v4.11-rc5 next-20170407] [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/Arend-van-Spriel/cfg80211-support-multiple-scheduled-scans/20170408-175235 base: https://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next.git master config: i386-randconfig-x008-201714 (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: # save the attached .config to linux build tree make ARCH=i386 Note: it may well be a FALSE warning. FWIW you are at least aware of it now. http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings All warnings (new ones prefixed by >>): drivers/net/wireless//broadcom/brcm80211/brcmfmac/pno.c: In function 'brcmf_pno_config_sched_scans': >> drivers/net/wireless//broadcom/brcm80211/brcmfmac/pno.c:384:7: warning: 'err' may be used uninitialized in this function [-Wmaybe-uninitialized] if (!err && is_valid_ether_addr(ms->bssid)) ^ drivers/net/wireless//broadcom/brcm80211/brcmfmac/pno.c:372:12: note: 'err' was declared here int i, j, err; ^~~ drivers/net/wireless//broadcom/brcm80211/brcmfmac/pno.c:166:6: warning: 'mac_mask' may be used uninitialized in this function [-Wmaybe-uninitialized] u8 *mac_mask; ^~~~~~~~ In file included from arch/x86/include/asm/string.h:2:0, from include/linux/string.h:18, from arch/x86/include/asm/page_32.h:34, from arch/x86/include/asm/page.h:13, from arch/x86/include/asm/thread_info.h:11, from include/linux/thread_info.h:25, from arch/x86/include/asm/preempt.h:6, from include/linux/preempt.h:80, from include/linux/spinlock.h:50, from include/linux/seqlock.h:35, from include/linux/time.h:5, from include/linux/ktime.h:24, from include/linux/timer.h:5, from include/linux/netdevice.h:28, from drivers/net/wireless//broadcom/brcm80211/brcmfmac/pno.c:16: arch/x86/include/asm/string_32.h:182:25: warning: 'mac_addr' may be used uninitialized in this function [-Wmaybe-uninitialized] #define memcpy(t, f, n) __builtin_memcpy(t, f, n) ^~~~~~~~~~~~~~~~ drivers/net/wireless//broadcom/brcm80211/brcmfmac/pno.c:165:6: note: 'mac_addr' was declared here u8 *mac_addr; ^~~~~~~~ drivers/net/wireless//broadcom/brcm80211/brcmfmac/pno.c:128:22: warning: 'scan_freq' may be used uninitialized in this function [-Wmaybe-uninitialized] pfn_param.scan_freq = cpu_to_le32(scan_freq); drivers/net/wireless//broadcom/brcm80211/brcmfmac/pno.c:401:6: note: 'scan_freq' was declared here u32 scan_freq; ^~~~~~~~~ drivers/net/wireless//broadcom/brcm80211/brcmfmac/pno.c:465:2: warning: 'buckets' may be used uninitialized in this function [-Wmaybe-uninitialized] kfree(buckets); ^~~~~~~~~~~~~~ vim +/err +384 drivers/net/wireless//broadcom/brcm80211/brcmfmac/pno.c 368 { 369 struct cfg80211_sched_scan_request *r; 370 struct cfg80211_match_set *ms; 371 bool active; 372 int i, j, err; 373 374 for (i = 0; i < pi->n_reqs; i++) { 375 r = pi->reqs[i]; 376 377 for (j = 0; j < r->n_match_sets; j++) { 378 ms = &r->match_sets[j]; 379 if (ms->ssid.ssid_len) { 380 active = brcmf_is_ssid_active(&ms->ssid, r); 381 err = brcmf_pno_add_ssid(ifp, &ms->ssid, 382 active); 383 } > 384 if (!err && is_valid_ether_addr(ms->bssid)) 385 err = brcmf_pno_add_bssid(ifp, ms->bssid); 386 387 if (err < 0) 388 return err; 389 } 390 } 391 return 0; 392 } --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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