CC: [email protected]
CC: [email protected]
CC: [email protected]
TO: Arnd Bergmann <[email protected]>
CC: Kalle Valo <[email protected]>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 
master
head:   a52a8e9eaf4a12dd58953fc622bb2bc08fd1d32c
commit: fa9f5d0e0b45a06802f7cb3afed237be6066821e iwlegacy: avoid -Wempty-body 
warning
date:   8 months ago
:::::: branch date: 8 hours ago
:::::: commit date: 8 months ago
config: i386-randconfig-c001-20211215 
(https://download.01.org/0day-ci/archive/20211217/[email protected]/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 
dd245bab9fbb364faa1581e4f92ba3119a872fba)
reproduce (this is a W=1 build):
        wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
        chmod +x ~/bin/make.cross
        # 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=fa9f5d0e0b45a06802f7cb3afed237be6066821e
        git remote add linus 
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout fa9f5d0e0b45a06802f7cb3afed237be6066821e
        # save the config file to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=i386 
clang-analyzer 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <[email protected]>


clang-analyzer warnings: (new ones prefixed by >>)
                   ^
   net/sched/sch_cake.c:1567:10: note: Calling 'ipv4_get_dsfield'
                   dscp = ipv4_get_dsfield((struct iphdr *)buf) >> 2;
                          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/net/dsfield.h:18:2: note: Undefined or garbage value returned to 
caller
           return iph->tos;
           ^      ~~~~~~~~
   net/sched/sch_cake.c:1006:10: warning: The left expression of the compound 
assignment is an uninitialized value. The computed value will also be garbage 
[clang-analyzer-core.uninitialized.Assign]
           oplen_a -= TCPOLEN_SACK_BASE;
           ~~~~~~~ ^
   net/sched/sch_cake.c:997:18: note: '?' condition is false
           u32 ack_seq_a = ntohl(tcph_a->ack_seq);
                           ^
   include/linux/byteorder/generic.h:140:18: note: expanded from macro 'ntohl'
   #define ntohl(x) ___ntohl(x)
                    ^
   include/linux/byteorder/generic.h:136:21: note: expanded from macro 
'___ntohl'
   #define ___ntohl(x) __be32_to_cpu(x)
                       ^
   include/uapi/linux/byteorder/little_endian.h:40:26: note: expanded from 
macro '__be32_to_cpu'
   #define __be32_to_cpu(x) __swab32((__force __u32)(__be32)(x))
                            ^
   include/uapi/linux/swab.h:118:3: note: expanded from macro '__swab32'
           (__builtin_constant_p((__u32)(x)) ?     \
            ^
   net/sched/sch_cake.c:999:6: note: 'oplen_a' declared without an initial value
           int oplen_a, oplen_b;
               ^~~~~~~
   net/sched/sch_cake.c:1002:11: note: Calling 'cake_get_tcpopt'
           sack_a = cake_get_tcpopt(tcph_a, TCPOPT_SACK, &oplen_a);
                    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   net/sched/sch_cake.c:960:9: note: Assuming 'length' is <= 0
           while (length > 0) {
                  ^~~~~~~~~~
   net/sched/sch_cake.c:960:2: note: Loop condition is false. Execution 
continues on line 983
           while (length > 0) {
           ^
   net/sched/sch_cake.c:983:2: note: Returning without writing to '*oplen'
           return NULL;
           ^
   net/sched/sch_cake.c:1002:11: note: Returning from 'cake_get_tcpopt'
           sack_a = cake_get_tcpopt(tcph_a, TCPOPT_SACK, &oplen_a);
                    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   net/sched/sch_cake.c:1006:10: note: The left expression of the compound 
assignment is an uninitialized value. The computed value will also be garbage
           oplen_a -= TCPOLEN_SACK_BASE;
           ~~~~~~~ ^
   net/sched/sch_cake.c:1007:10: warning: The left expression of the compound 
assignment is an uninitialized value. The computed value will also be garbage 
[clang-analyzer-core.uninitialized.Assign]
           oplen_b -= TCPOLEN_SACK_BASE;
           ~~~~~~~ ^
   net/sched/sch_cake.c:997:18: note: '?' condition is false
           u32 ack_seq_a = ntohl(tcph_a->ack_seq);
                           ^
   include/linux/byteorder/generic.h:140:18: note: expanded from macro 'ntohl'
   #define ntohl(x) ___ntohl(x)
                    ^
   include/linux/byteorder/generic.h:136:21: note: expanded from macro 
'___ntohl'
   #define ___ntohl(x) __be32_to_cpu(x)
                       ^
   include/uapi/linux/byteorder/little_endian.h:40:26: note: expanded from 
macro '__be32_to_cpu'
   #define __be32_to_cpu(x) __swab32((__force __u32)(__be32)(x))
                            ^
   include/uapi/linux/swab.h:118:3: note: expanded from macro '__swab32'
           (__builtin_constant_p((__u32)(x)) ?     \
            ^
   net/sched/sch_cake.c:999:15: note: 'oplen_b' declared without an initial 
value
           int oplen_a, oplen_b;
                        ^~~~~~~
   net/sched/sch_cake.c:1003:11: note: Calling 'cake_get_tcpopt'
           sack_b = cake_get_tcpopt(tcph_b, TCPOPT_SACK, &oplen_b);
                    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   net/sched/sch_cake.c:960:9: note: Assuming 'length' is <= 0
           while (length > 0) {
                  ^~~~~~~~~~
   net/sched/sch_cake.c:960:2: note: Loop condition is false. Execution 
continues on line 983
           while (length > 0) {
           ^
   net/sched/sch_cake.c:983:2: note: Returning without writing to '*oplen'
           return NULL;
           ^
   net/sched/sch_cake.c:1003:11: note: Returning from 'cake_get_tcpopt'
           sack_b = cake_get_tcpopt(tcph_b, TCPOPT_SACK, &oplen_b);
                    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   net/sched/sch_cake.c:1007:10: note: The left expression of the compound 
assignment is an uninitialized value. The computed value will also be garbage
           oplen_b -= TCPOLEN_SACK_BASE;
           ~~~~~~~ ^
   Suppressed 15 warnings (15 in non-user code).
   Use -header-filter=.* to display errors from all non-system headers. Use 
-system-headers to display errors from system headers as well.
   7 warnings generated.
   Suppressed 7 warnings (7 in non-user code).
   Use -header-filter=.* to display errors from all non-system headers. Use 
-system-headers to display errors from system headers as well.
   7 warnings generated.
   Suppressed 7 warnings (6 in non-user code, 1 with check filters).
   Use -header-filter=.* to display errors from all non-system headers. Use 
-system-headers to display errors from system headers as well.
   6 warnings generated.
   Suppressed 6 warnings (6 in non-user code).
   Use -header-filter=.* to display errors from all non-system headers. Use 
-system-headers to display errors from system headers as well.
   15 warnings generated.
   Suppressed 15 warnings (15 in non-user code).
   Use -header-filter=.* to display errors from all non-system headers. Use 
-system-headers to display errors from system headers as well.
   18 warnings generated.
>> drivers/net/wireless/intel/iwlegacy/common.c:1434:39: warning: Value stored 
>> to 'scan_notif' during its initialization is never read 
>> [clang-analyzer-deadcode.DeadStores]
           struct il_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
                                                ^~~~~~~~~~   ~~~~~~~~~~~~~~~~~~
   drivers/net/wireless/intel/iwlegacy/common.c:1434:39: note: Value stored to 
'scan_notif' during its initialization is never read
           struct il_scancomplete_notification *scan_notif = (void *)pkt->u.raw;
                                                ^~~~~~~~~~   ~~~~~~~~~~~~~~~~~~
   drivers/net/wireless/intel/iwlegacy/common.c:5491:2: warning: Value stored 
to 'inta_mask' is never read [clang-analyzer-deadcode.DeadStores]
           inta_mask = _il_rd(il, CSR_INT_MASK);   /* just for debug */
           ^           ~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/net/wireless/intel/iwlegacy/common.c:5491:2: note: Value stored to 
'inta_mask' is never read
           inta_mask = _il_rd(il, CSR_INT_MASK);   /* just for debug */
           ^           ~~~~~~~~~~~~~~~~~~~~~~~~
   Suppressed 16 warnings (16 in non-user code).
   Use -header-filter=.* to display errors from all non-system headers. Use 
-system-headers to display errors from system headers as well.
   16 warnings generated.
   Suppressed 16 warnings (16 in non-user code).
   Use -header-filter=.* to display errors from all non-system headers. Use 
-system-headers to display errors from system headers as well.
   21 warnings generated.
   drivers/net/wireless/intel/iwlegacy/3945-mac.c:254:3: warning: Use of memory 
after it is freed [clang-analyzer-unix.Malloc]
                   list_del(element);
                   ^
   drivers/net/wireless/intel/iwlegacy/3945-mac.c:2826:2: note: Taking false 
branch
           D_MAC80211("enter\n");
           ^
   drivers/net/wireless/intel/iwlegacy/common.h:3025:29: note: expanded from 
macro 'D_MAC80211'
   #define D_MAC80211(f, a...)     IL_DBG(IL_DL_MAC80211, f, ## a)
                                   ^
   drivers/net/wireless/intel/iwlegacy/common.h:2940:37: note: expanded from 
macro 'IL_DBG'
   #define IL_DBG(level, fmt, args...) no_printk(fmt, ##args)
                                       ^
   include/linux/printk.h:139:2: note: expanded from macro 'no_printk'
           if (0)                                          \
           ^
   drivers/net/wireless/intel/iwlegacy/3945-mac.c:2828:6: note: Assuming field 
'is_open' is not equal to 0
           if (!il->is_open) {
               ^~~~~~~~~~~~
   drivers/net/wireless/intel/iwlegacy/3945-mac.c:2828:2: note: Taking false 
branch
           if (!il->is_open) {
           ^
   drivers/net/wireless/intel/iwlegacy/3945-mac.c:2835:2: note: Calling 
'il3945_down'
           il3945_down(il);
           ^~~~~~~~~~~~~~~
   drivers/net/wireless/intel/iwlegacy/3945-mac.c:2312:2: note: Calling 
'__il3945_down'
           __il3945_down(il);
           ^~~~~~~~~~~~~~~~~
   drivers/net/wireless/intel/iwlegacy/3945-mac.c:2227:2: note: Taking false 
branch
           D_INFO(DRV_NAME " is going down\n");
           ^
   drivers/net/wireless/intel/iwlegacy/common.h:3024:26: note: expanded from 
macro 'D_INFO'
   #define D_INFO(f, a...)         IL_DBG(IL_DL_INFO, f, ## a)
                                   ^
   drivers/net/wireless/intel/iwlegacy/common.h:2940:37: note: expanded from 
macro 'IL_DBG'
   #define IL_DBG(level, fmt, args...) no_printk(fmt, ##args)
                                       ^
   include/linux/printk.h:139:2: note: expanded from macro 'no_printk'
           if (0)                                          \
           ^
   drivers/net/wireless/intel/iwlegacy/3945-mac.c:2247:6: note: Assuming 
'exit_pending' is not equal to 0
           if (!exit_pending)
               ^~~~~~~~~~~~~
   drivers/net/wireless/intel/iwlegacy/3945-mac.c:2247:2: note: Taking false 
branch
           if (!exit_pending)
           ^
   drivers/net/wireless/intel/iwlegacy/3945-mac.c:2254:2: note: Loop condition 
is false.  Exiting loop
           spin_lock_irqsave(&il->lock, flags);
           ^
   include/linux/spinlock.h:384:2: note: expanded from macro 'spin_lock_irqsave'
           raw_spin_lock_irqsave(spinlock_check(lock), flags);     \
           ^
   include/linux/spinlock.h:250:2: note: expanded from macro 
'raw_spin_lock_irqsave'
           do {                                            \
           ^
   drivers/net/wireless/intel/iwlegacy/3945-mac.c:2254:2: note: Loop condition 
is false.  Exiting loop
           spin_lock_irqsave(&il->lock, flags);
           ^
   include/linux/spinlock.h:382:43: note: expanded from macro 
'spin_lock_irqsave'
   #define spin_lock_irqsave(lock, flags)                          \
                                                                   ^
   drivers/net/wireless/intel/iwlegacy/3945-mac.c:2259:6: note: Assuming field 
'mac80211_registered' is 0
           if (il->mac80211_registered)
               ^~~~~~~~~~~~~~~~~~~~~~~
   drivers/net/wireless/intel/iwlegacy/3945-mac.c:2259:2: note: Taking false 
branch
           if (il->mac80211_registered)
           ^
   drivers/net/wireless/intel/iwlegacy/3945-mac.c:2264:6: note: Assuming the 
condition is true
           if (!il_is_init(il)) {
               ^~~~~~~~~~~~~~~
   drivers/net/wireless/intel/iwlegacy/3945-mac.c:2264:2: note: Taking true 
branch
           if (!il_is_init(il)) {
           ^
   drivers/net/wireless/intel/iwlegacy/3945-mac.c:2269:3: note: Control jumps 
to line 2300
                   goto exit;
                   ^
   drivers/net/wireless/intel/iwlegacy/3945-mac.c:2305:2: note: Calling 
'il3945_clear_free_frames'
           il3945_clear_free_frames(il);
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/net/wireless/intel/iwlegacy/3945-mac.c:250:2: note: Taking false 
branch
           D_INFO("%d frames on pre-allocated heap on clear.\n", 
il->frames_count);
           ^
   drivers/net/wireless/intel/iwlegacy/common.h:3024:26: note: expanded from 
macro 'D_INFO'
   #define D_INFO(f, a...)         IL_DBG(IL_DL_INFO, f, ## a)
                                   ^
   drivers/net/wireless/intel/iwlegacy/common.h:2940:37: note: expanded from 
macro 'IL_DBG'
   #define IL_DBG(level, fmt, args...) no_printk(fmt, ##args)
                                       ^
   include/linux/printk.h:139:2: note: expanded from macro 'no_printk'
           if (0)                                          \
           ^
   drivers/net/wireless/intel/iwlegacy/3945-mac.c:252:2: note: Loop condition 
is true.  Entering loop body
           while (!list_empty(&il->free_frames)) {
           ^
   drivers/net/wireless/intel/iwlegacy/3945-mac.c:255:9: note: Left side of 
'&&' is false
                   kfree(list_entry(element, struct il3945_frame, list));
                         ^
   include/linux/list.h:511:2: note: expanded from macro 'list_entry'
           container_of(ptr, type, member)
           ^
   include/linux/kernel.h:709:61: note: expanded from macro 'container_of'
           BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) &&   \
                                                                      ^
   drivers/net/wireless/intel/iwlegacy/3945-mac.c:255:9: note: Taking false 
branch
                   kfree(list_entry(element, struct il3945_frame, list));
                         ^
   include/linux/list.h:511:2: note: expanded from macro 'list_entry'
           container_of(ptr, type, member)
           ^
   include/linux/kernel.h:709:2: note: expanded from macro 'container_of'
           BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) &&   \
           ^
   include/linux/build_bug.h:39:37: note: expanded from macro 'BUILD_BUG_ON_MSG'
   #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
                                       ^
   include/linux/compiler_types.h:320:2: note: expanded from macro 
'compiletime_assert'
           _compiletime_assert(condition, msg, __compiletime_assert_, 
__COUNTER__)
           ^
   include/linux/compiler_types.h:308:2: note: expanded from macro 
'_compiletime_assert'
           __compiletime_assert(condition, msg, prefix, suffix)
           ^
   include/linux/compiler_types.h:300:3: note: expanded from macro 
'__compiletime_assert'
                   if (!(condition))                                       \
                   ^
   drivers/net/wireless/intel/iwlegacy/3945-mac.c:255:9: note: Loop condition 
is false.  Exiting loop
                   kfree(list_entry(element, struct il3945_frame, list));
                         ^
   include/linux/list.h:511:2: note: expanded from macro 'list_entry'
           container_of(ptr, type, member)
           ^
   include/linux/kernel.h:709:2: note: expanded from macro 'container_of'
           BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) &&   \
           ^
   include/linux/build_bug.h:39:37: note: expanded from macro 'BUILD_BUG_ON_MSG'
   #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
                                       ^
   include/linux/compiler_types.h:320:2: note: expanded from macro 
'compiletime_assert'
           _compiletime_assert(condition, msg, __compiletime_assert_, 
__COUNTER__)
           ^
   include/linux/compiler_types.h:308:2: note: expanded from macro 
'_compiletime_assert'
           __compiletime_assert(condition, msg, prefix, suffix)
           ^
   include/linux/compiler_types.h:298:2: note: expanded from macro 
'__compiletime_assert'
           do {                                                            \
           ^
   drivers/net/wireless/intel/iwlegacy/3945-mac.c:255:3: note: Memory is 
released
                   kfree(list_entry(element, struct il3945_frame, list));
                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/net/wireless/intel/iwlegacy/3945-mac.c:252:2: note: Loop condition 
is true.  Entering loop body
           while (!list_empty(&il->free_frames)) {
           ^
   drivers/net/wireless/intel/iwlegacy/3945-mac.c:254:3: note: Use of memory 
after it is freed
                   list_del(element);
                   ^        ~~~~~~~
>> drivers/net/wireless/intel/iwlegacy/3945-mac.c:754:20: warning: Value stored 
>> to 'pkt' during its initialization is never read 
>> [clang-analyzer-deadcode.DeadStores]
           struct il_rx_pkt *pkt = rxb_addr(rxb);
                             ^~~
   drivers/net/wireless/intel/iwlegacy/3945-mac.c:754:20: note: Value stored to 
'pkt' during its initialization is never read
           struct il_rx_pkt *pkt = rxb_addr(rxb);
                             ^~~
   drivers/net/wireless/intel/iwlegacy/3945-mac.c:1222:3: warning: Value stored 
to 'len' is never read [clang-analyzer-deadcode.DeadStores]
                   len += sizeof(u32);     /* account for status word */
                   ^      ~~~~~~~~~~~
   drivers/net/wireless/intel/iwlegacy/3945-mac.c:1222:3: note: Value stored to 
'len' is never read
                   len += sizeof(u32);     /* account for status word */
                   ^      ~~~~~~~~~~~
   drivers/net/wireless/intel/iwlegacy/3945-mac.c:1429:3: warning: Value stored 
to 'handled' is never read [clang-analyzer-deadcode.DeadStores]
                   handled |= CSR_INT_BIT_HW_ERR;
                   ^
   drivers/net/wireless/intel/iwlegacy/3945-mac.c:1429:3: note: Value stored to 
'handled' is never read
   Suppressed 17 warnings (16 in non-user code, 1 with check filters).
   Use -header-filter=.* to display errors from all non-system headers. Use 
-system-headers to display errors from system headers as well.
   9 warnings generated.
   Suppressed 9 warnings (9 in non-user code).
   Use -header-filter=.* to display errors from all non-system headers. Use 
-system-headers to display errors from system headers as well.
   9 warnings generated.
   Suppressed 9 warnings (9 in non-user code).
   Use -header-filter=.* to display errors from all non-system headers. Use 
-system-headers to display errors from system headers as well.
   8 warnings generated.
   Suppressed 8 warnings (8 in non-user code).
   Use -header-filter=.* to display errors from all non-system headers. Use 
-system-headers to display errors from system headers as well.
   7 warnings generated.
   Suppressed 7 warnings (7 in non-user code).
   Use -header-filter=.* to display errors from all non-system headers. Use 
-system-headers to display errors from system headers as well.
   7 warnings generated.
   Suppressed 7 warnings (7 in non-user code).
   Use -header-filter=.* to display errors from all non-system headers. Use 
-system-headers to display errors from system headers as well.
   7 warnings generated.
   Suppressed 7 warnings (7 in non-user code).
   Use -header-filter=.* to display errors from all non-system headers. Use 
-system-headers to display errors from system headers as well.
   7 warnings generated.
   Suppressed 7 warnings (7 in non-user code).
   Use -header-filter=.* to display errors from all non-system headers. Use 
-system-headers to display errors from system headers as well.
   7 warnings generated.
   Suppressed 7 warnings (7 in non-user code).
   Use -header-filter=.* to display errors from all non-system headers. Use 
-system-headers to display errors from system headers as well.
   7 warnings generated.
   Suppressed 7 warnings (7 in non-user code).
   Use -header-filter=.* to display errors from all non-system headers. Use 
-system-headers to display errors from system headers as well.
   7 warnings generated.
   Suppressed 7 warnings (7 in non-user code).
   Use -header-filter=.* to display errors from all non-system headers. Use 
-system-headers to display errors from system headers as well.
   7 warnings generated.
   Suppressed 7 warnings (7 in non-user code).
   Use -header-filter=.* to display errors from all non-system headers. Use 
-system-headers to display errors from system headers as well.
   6 warnings generated.
   drivers/mtd/nand/raw/nand_bbt.c:550:3: warning: Value stored to 'bbtblocks' 
is never read [clang-analyzer-deadcode.DeadStores]
                   bbtblocks = mtd->size >> this->bbt_erase_shift;
                   ^           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/mtd/nand/raw/nand_bbt.c:550:3: note: Value stored to 'bbtblocks' is 
never read
                   bbtblocks = mtd->size >> this->bbt_erase_shift;
                   ^           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   Suppressed 5 warnings (5 in non-user code).
   Use -header-filter=.* to display errors from all non-system headers. Use 
-system-headers to display errors from system headers as well.
   5 warnings generated.
   Suppressed 5 warnings (5 in non-user code).
   Use -header-filter=.* to display errors from all non-system headers. Use 
-system-headers to display errors from system headers as well.
   5 warnings generated.
   Suppressed 5 warnings (5 in non-user code).
   Use -header-filter=.* to display errors from all non-system headers. Use 
-system-headers to display errors from system headers as well.
   5 warnings generated.
   Suppressed 5 warnings (5 in non-user code).
   Use -header-filter=.* to display errors from all non-system headers. Use 
-system-headers to display errors from system headers as well.
   5 warnings generated.
   Suppressed 5 warnings (5 in non-user code).
   Use -header-filter=.* to display errors from all non-system headers. Use 
-system-headers to display errors from system headers as well.
   5 warnings generated.
   Suppressed 5 warnings (5 in non-user code).
   Use -header-filter=.* to display errors from all non-system headers. Use 
-system-headers to display errors from system headers as well.
   16 warnings generated.
   drivers/net/wireless/quantenna/qtnfmac/core.c:679:2: warning: Value stored 
to 'bus' is never read [clang-analyzer-deadcode.DeadStores]
           bus = vif->mac->bus;
           ^     ~~~~~~~~~~~~~
   drivers/net/wireless/quantenna/qtnfmac/core.c:679:2: note: Value stored to 
'bus' is never read
           bus = vif->mac->bus;
           ^     ~~~~~~~~~~~~~
   Suppressed 15 warnings (15 in non-user code).
   Use -header-filter=.* to display errors from all non-system headers. Use 
-system-headers to display errors from system headers as well.
   16 warnings generated.
   drivers/net/wireless/quantenna/qtnfmac/commands.c:982:2: warning: Null 
pointer passed as 2nd argument to string copy function 
[clang-analyzer-unix.cstring.NullArg]
           strlcpy(hwinfo->fw_version, bld_label, sizeof(hwinfo->fw_version));
           ^
   drivers/net/wireless/quantenna/qtnfmac/commands.c:1586:7: note: 'cmd_skb' is 
non-null
           if (!cmd_skb)
                ^~~~~~~
   drivers/net/wireless/quantenna/qtnfmac/commands.c:1586:2: note: Taking false 
branch
           if (!cmd_skb)
           ^
   drivers/net/wireless/quantenna/qtnfmac/commands.c:1592:6: note: Assuming 
'ret' is 0
           if (ret)
               ^~~
   drivers/net/wireless/quantenna/qtnfmac/commands.c:1592:2: note: Taking false 
branch
           if (ret)
           ^
   drivers/net/wireless/quantenna/qtnfmac/commands.c:1596:8: note: Calling 
'qtnf_cmd_resp_proc_hw_info'

vim +/scan_notif +1434 drivers/net/wireless/intel/iwlegacy/common.c

0cdc21363cc279 drivers/net/wireless/iwlegacy/common.c       Stanislaw Gruszka 
2011-11-15  1432  
0cdc21363cc279 drivers/net/wireless/iwlegacy/common.c       Stanislaw Gruszka 
2011-11-15  1433          struct il_rx_pkt *pkt = rxb_addr(rxb);
0cdc21363cc279 drivers/net/wireless/iwlegacy/common.c       Stanislaw Gruszka 
2011-11-15 @1434          struct il_scancomplete_notification *scan_notif = 
(void *)pkt->u.raw;
0cdc21363cc279 drivers/net/wireless/iwlegacy/common.c       Stanislaw Gruszka 
2011-11-15  1435  
e7392364fcd100 drivers/net/wireless/iwlegacy/common.c       Stanislaw Gruszka 
2011-11-15  1436          D_SCAN("Scan complete: %d channels (TSF 0x%08X:%08X) 
- %d\n",
e7392364fcd100 drivers/net/wireless/iwlegacy/common.c       Stanislaw Gruszka 
2011-11-15  1437                 scan_notif->scanned_channels, 
scan_notif->tsf_low,
0cdc21363cc279 drivers/net/wireless/iwlegacy/common.c       Stanislaw Gruszka 
2011-11-15  1438                 scan_notif->tsf_high, scan_notif->status);
0cdc21363cc279 drivers/net/wireless/iwlegacy/common.c       Stanislaw Gruszka 
2011-11-15  1439  
0cdc21363cc279 drivers/net/wireless/iwlegacy/common.c       Stanislaw Gruszka 
2011-11-15  1440          /* The HW is no longer scanning */
0cdc21363cc279 drivers/net/wireless/iwlegacy/common.c       Stanislaw Gruszka 
2011-11-15  1441          clear_bit(S_SCAN_HW, &il->status);
0cdc21363cc279 drivers/net/wireless/iwlegacy/common.c       Stanislaw Gruszka 
2011-11-15  1442  
0cdc21363cc279 drivers/net/wireless/iwlegacy/common.c       Stanislaw Gruszka 
2011-11-15  1443          D_SCAN("Scan on %sGHz took %dms\n",
57fbcce37be7c1 drivers/net/wireless/intel/iwlegacy/common.c Johannes Berg     
2016-04-12  1444                 (il->scan_band == NL80211_BAND_2GHZ) ? "2.4" : 
"5.2",
0cdc21363cc279 drivers/net/wireless/iwlegacy/common.c       Stanislaw Gruszka 
2011-11-15  1445                 jiffies_to_msecs(jiffies - il->scan_start));
0cdc21363cc279 drivers/net/wireless/iwlegacy/common.c       Stanislaw Gruszka 
2011-11-15  1446  
0cdc21363cc279 drivers/net/wireless/iwlegacy/common.c       Stanislaw Gruszka 
2011-11-15  1447          queue_work(il->workqueue, &il->scan_completed);
0cdc21363cc279 drivers/net/wireless/iwlegacy/common.c       Stanislaw Gruszka 
2011-11-15  1448  }
0cdc21363cc279 drivers/net/wireless/iwlegacy/common.c       Stanislaw Gruszka 
2011-11-15  1449  

:::::: The code at line 1434 was first introduced by commit
:::::: 0cdc21363cc27989fe9aa1cde614ef4c0429d62f iwlegacy: merge common .c files

:::::: TO: Stanislaw Gruszka <[email protected]>
:::::: CC: Stanislaw Gruszka <[email protected]>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/[email protected]
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