On Fri, Jul 21, 2017 at 07:28:42PM +0300, Denis Pynkin wrote: > PXE boot is broken with GCC 7.1 due option '-fstore-merging' enabled > by default for '-O2': > > BOOTP broadcast 1 > data abort > pc : [<8ff8bb30>] lr : [<00004f1f>] > reloc pc : [<17832b30>] lr : [<878abf1f>] > sp : 8f558bc0 ip : 00000000 fp : 8ffef5a4 > r10: 8ffed248 r9 : 8f558ee0 r8 : 8ffef594 > r7 : 0000000e r6 : 8ffed700 r5 : 00000000 r4 : 8ffed74e > r3 : 00060101 r2 : 8ffed230 r1 : 8ffed706 r0 : 00000ddd > Flags: nzcv IRQs off FIQs off Mode SVC_32 > Resetting CPU ... > > Core reason is usage of structures for network headers without packed > attribute. > > Reviewed-by: Yauheni Kaliuta <[email protected]> > Signed-off-by: Denis Pynkin <[email protected]> > --- > include/net.h | 14 +++++++------- > net/bootp.h | 2 +- > net/dns.h | 2 +- > net/nfs.h | 2 +- > net/sntp.h | 2 +- > 5 files changed, 11 insertions(+), 11 deletions(-)
So, what I've been wondering, and others have poked me about (who can chime in if they like), how is the kernel not also tripping over this? -- Tom
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