tree: https://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next.git skb-put-zero head: f18c9b85b5d68bb029dc1f8c82bae33632d6f485 commit: f18c9b85b5d68bb029dc1f8c82bae33632d6f485 [5/5] networking: make skb_push & __skb_push return void* config: m68k-sun3_defconfig (attached as .config) compiler: m68k-linux-gcc (GCC) 4.9.0 reproduce: wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout f18c9b85b5d68bb029dc1f8c82bae33632d6f485 # save the attached .config to linux build tree make.cross ARCH=m68k
All error/warnings (new ones prefixed by >>):
drivers/net/ppp/ppp_async.c: In function 'process_input_packet':
>> drivers/net/ppp/ppp_async.c:805:19: warning: dereferencing 'void *' pointer
skb_push(skb, 1)[0] = 0;
^
>> drivers/net/ppp/ppp_async.c:805:3: error: invalid use of void expression
skb_push(skb, 1)[0] = 0;
^
--
drivers/net/ppp/ppp_synctty.c: In function 'ppp_sync_input':
>> drivers/net/ppp/ppp_synctty.c:714:19: warning: dereferencing 'void *' pointer
skb_push(skb, 1)[0] = 0;
^
>> drivers/net/ppp/ppp_synctty.c:714:3: error: invalid use of void expression
skb_push(skb, 1)[0] = 0;
^
--
drivers/net/ppp/pptp.c: In function 'pptp_rcv_core':
>> drivers/net/ppp/pptp.c:331:20: warning: dereferencing 'void *' pointer
skb_push(skb, 1)[0] = 0;
^
>> drivers/net/ppp/pptp.c:331:4: error: invalid use of void expression
skb_push(skb, 1)[0] = 0;
^
vim +805 drivers/net/ppp/ppp_async.c
^1da177e drivers/net/ppp_async.c Linus Torvalds 2005-04-16 789
fcs = PPP_FCS(fcs, *p++);
^1da177e drivers/net/ppp_async.c Linus Torvalds 2005-04-16 790 if (fcs
!= PPP_GOODFCS)
^1da177e drivers/net/ppp_async.c Linus Torvalds 2005-04-16 791
goto err; /* bad FCS */
^1da177e drivers/net/ppp_async.c Linus Torvalds 2005-04-16 792
skb_trim(skb, skb->len - 2);
^1da177e drivers/net/ppp_async.c Linus Torvalds 2005-04-16 793
^1da177e drivers/net/ppp_async.c Linus Torvalds 2005-04-16 794 /*
check for address/control and protocol compression */
^1da177e drivers/net/ppp_async.c Linus Torvalds 2005-04-16 795 p =
skb->data;
7c5050e3 drivers/net/ppp_async.c Paul Mackerras 2007-04-19 796 if
(p[0] == PPP_ALLSTATIONS) {
^1da177e drivers/net/ppp_async.c Linus Torvalds 2005-04-16 797
/* chop off address/control */
7c5050e3 drivers/net/ppp_async.c Paul Mackerras 2007-04-19 798
if (p[1] != PPP_UI || skb->len < 3)
^1da177e drivers/net/ppp_async.c Linus Torvalds 2005-04-16 799
goto err;
^1da177e drivers/net/ppp_async.c Linus Torvalds 2005-04-16 800
p = skb_pull(skb, 2);
^1da177e drivers/net/ppp_async.c Linus Torvalds 2005-04-16 801 }
^1da177e drivers/net/ppp_async.c Linus Torvalds 2005-04-16 802 proto =
p[0];
^1da177e drivers/net/ppp_async.c Linus Torvalds 2005-04-16 803 if
(proto & 1) {
^1da177e drivers/net/ppp_async.c Linus Torvalds 2005-04-16 804
/* protocol is compressed */
^1da177e drivers/net/ppp_async.c Linus Torvalds 2005-04-16 @805
skb_push(skb, 1)[0] = 0;
^1da177e drivers/net/ppp_async.c Linus Torvalds 2005-04-16 806 } else {
^1da177e drivers/net/ppp_async.c Linus Torvalds 2005-04-16 807
if (skb->len < 2)
^1da177e drivers/net/ppp_async.c Linus Torvalds 2005-04-16 808
goto err;
^1da177e drivers/net/ppp_async.c Linus Torvalds 2005-04-16 809
proto = (proto << 8) + p[1];
^1da177e drivers/net/ppp_async.c Linus Torvalds 2005-04-16 810
if (proto == PPP_LCP)
^1da177e drivers/net/ppp_async.c Linus Torvalds 2005-04-16 811
async_lcp_peek(ap, p, skb->len, 1);
^1da177e drivers/net/ppp_async.c Linus Torvalds 2005-04-16 812 }
^1da177e drivers/net/ppp_async.c Linus Torvalds 2005-04-16 813
:::::: The code at line 805 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2
:::::: TO: Linus Torvalds <torva...@ppc970.osdl.org>
:::::: CC: Linus Torvalds <torva...@ppc970.osdl.org>
---
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