KMSAN reported use of uninitialized sctp_addr->v4.sin_addr.s_addr and
sctp_addr->v6.sin6_scope_id in sctp_v6_cmp_addr() (see below).
Make sure all fields of an IPv6 address are initialized, which
guarantees that the IPv4 fields are also initialized.
==================================================================
BUG: KMSAN: use of uninitialized memory in sctp_v6_cmp_addr+0x8d4/0x9f0
net/sctp/ipv6.c:517
CPU: 2 PID: 31056 Comm: syz-executor1 Not tainted 4.11.0-rc5+ #2944
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs
01/01/2011
Call Trace:
dump_stack+0x172/0x1c0 lib/dump_stack.c:42
is_logbuf_locked mm/kmsan/kmsan.c:59 [inline]
kmsan_report+0x12a/0x180 mm/kmsan/kmsan.c:938
native_save_fl arch/x86/include/asm/irqflags.h:18 [inline]
arch_local_save_flags arch/x86/include/asm/irqflags.h:72 [inline]
arch_local_irq_save arch/x86/include/asm/irqflags.h:113 [inline]
__msan_warning_32+0x61/0xb0 mm/kmsan/kmsan_instr.c:467
sctp_v6_cmp_addr+0x8d4/0x9f0 net/sctp/ipv6.c:517
sctp_v6_get_dst+0x8c7/0x1630 net/sctp/ipv6.c:290
sctp_transport_route+0x101/0x570 net/sctp/transport.c:292
sctp_assoc_add_peer+0x66d/0x16f0 net/sctp/associola.c:651
sctp_sendmsg+0x35a5/0x4f90 net/sctp/socket.c:1871
inet_sendmsg+0x498/0x670 net/ipv4/af_inet.c:762
sock_sendmsg_nosec net/socket.c:633 [inline]
sock_sendmsg net/socket.c:643 [inline]
SYSC_sendto+0x608/0x710 net/socket.c:1696
SyS_sendto+0x8a/0xb0 net/socket.c:1664
entry_SYSCALL_64_fastpath+0x13/0x94
RIP: 0033:0x44b479
RSP: 002b:00007f6213f21c08 EFLAGS: 00000286 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000020000000 RCX: 000000000044b479
RDX: 0000000000000041 RSI: 0000000020edd000 RDI: 0000000000000006
RBP: 00000000007080a8 R08: 0000000020b85fe4 R09: 000000000000001c
R10: 0000000000040005 R11: 0000000000000286 R12: 00000000ffffffff
R13: 0000000000003760 R14: 00000000006e5820 R15: 0000000000ff8000
origin description: ----dst_saddr@sctp_v6_get_dst
local variable created at:
sk_fullsock include/net/sock.h:2321 [inline]
inet6_sk include/linux/ipv6.h:309 [inline]
sctp_v6_get_dst+0x91/0x1630 net/sctp/ipv6.c:241
sctp_transport_route+0x101/0x570 net/sctp/transport.c:292
==================================================================
BUG: KMSAN: use of uninitialized memory in sctp_v6_cmp_addr+0x8d4/0x9f0
net/sctp/ipv6.c:517
CPU: 2 PID: 31056 Comm: syz-executor1 Not tainted 4.11.0-rc5+ #2944
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs
01/01/2011
Call Trace:
dump_stack+0x172/0x1c0 lib/dump_stack.c:42
is_logbuf_locked mm/kmsan/kmsan.c:59 [inline]
kmsan_report+0x12a/0x180 mm/kmsan/kmsan.c:938
native_save_fl arch/x86/include/asm/irqflags.h:18 [inline]
arch_local_save_flags arch/x86/include/asm/irqflags.h:72 [inline]
arch_local_irq_save arch/x86/include/asm/irqflags.h:113 [inline]
__msan_warning_32+0x61/0xb0 mm/kmsan/kmsan_instr.c:467
sctp_v6_cmp_addr+0x8d4/0x9f0 net/sctp/ipv6.c:517
sctp_v6_get_dst+0x8c7/0x1630 net/sctp/ipv6.c:290
sctp_transport_route+0x101/0x570 net/sctp/transport.c:292
sctp_assoc_add_peer+0x66d/0x16f0 net/sctp/associola.c:651
sctp_sendmsg+0x35a5/0x4f90 net/sctp/socket.c:1871
inet_sendmsg+0x498/0x670 net/ipv4/af_inet.c:762
sock_sendmsg_nosec net/socket.c:633 [inline]
sock_sendmsg net/socket.c:643 [inline]
SYSC_sendto+0x608/0x710 net/socket.c:1696
SyS_sendto+0x8a/0xb0 net/socket.c:1664
entry_SYSCALL_64_fastpath+0x13/0x94
RIP: 0033:0x44b479
RSP: 002b:00007f6213f21c08 EFLAGS: 00000286 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000020000000 RCX: 000000000044b479
RDX: 0000000000000041 RSI: 0000000020edd000 RDI: 0000000000000006
RBP: 00000000007080a8 R08: 0000000020b85fe4 R09: 000000000000001c
R10: 0000000000040005 R11: 0000000000000286 R12: 00000000ffffffff
R13: 0000000000003760 R14: 00000000006e5820 R15: 0000000000ff8000
origin description: ----dst_saddr@sctp_v6_get_dst
local variable created at:
sk_fullsock include/net/sock.h:2321 [inline]
inet6_sk include/linux/ipv6.h:309 [inline]
sctp_v6_get_dst+0x91/0x1630 net/sctp/ipv6.c:241
sctp_transport_route+0x101/0x570 net/sctp/transport.c:292
==================================================================
Signed-off-by: Alexander Potapenko <[email protected]>
---
net/sctp/ipv6.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
index 2a186b201ad2..a15d691829c6 100644
--- a/net/sctp/ipv6.c
+++ b/net/sctp/ipv6.c
@@ -513,6 +513,8 @@ static void sctp_v6_to_addr(union sctp_addr *addr, struct in6_addr *saddr,
addr->sa.sa_family = AF_INET6;
addr->v6.sin6_port = port;
addr->v6.sin6_addr = *saddr;
+ addr->v6.sin6_flowinfo = 0;
+ addr->v6.sin6_scope_id = 0;
}
/* Compare addresses exactly.
--
2.13.2.932.g7449e964c-goog
On Tue, Jul 18, 2017 at 4:55 PM, Alexander Potapenko <[email protected]> wrote:
> KMSAN reported use of uninitialized sctp_addr->v4.sin_addr.s_addr and
> sctp_addr->v6.sin6_scope_id in sctp_v6_cmp_addr() (see below).
> Make sure all fields of an IPv6 address are initialized, which
> guarantees that the IPv4 fields are also initialized.
I'm assuming here that the IPv4 address is known to overlap with the
IPv6 one and doesn't need separate initialization.
> ==================================================================
> BUG: KMSAN: use of uninitialized memory in sctp_v6_cmp_addr+0x8d4/0x9f0
> net/sctp/ipv6.c:517
> CPU: 2 PID: 31056 Comm: syz-executor1 Not tainted 4.11.0-rc5+ #2944
> Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs
> 01/01/2011
> Call Trace:
> dump_stack+0x172/0x1c0 lib/dump_stack.c:42
> is_logbuf_locked mm/kmsan/kmsan.c:59 [inline]
> kmsan_report+0x12a/0x180 mm/kmsan/kmsan.c:938
> native_save_fl arch/x86/include/asm/irqflags.h:18 [inline]
> arch_local_save_flags arch/x86/include/asm/irqflags.h:72 [inline]
> arch_local_irq_save arch/x86/include/asm/irqflags.h:113 [inline]
> __msan_warning_32+0x61/0xb0 mm/kmsan/kmsan_instr.c:467
> sctp_v6_cmp_addr+0x8d4/0x9f0 net/sctp/ipv6.c:517
> sctp_v6_get_dst+0x8c7/0x1630 net/sctp/ipv6.c:290
> sctp_transport_route+0x101/0x570 net/sctp/transport.c:292
> sctp_assoc_add_peer+0x66d/0x16f0 net/sctp/associola.c:651
> sctp_sendmsg+0x35a5/0x4f90 net/sctp/socket.c:1871
> inet_sendmsg+0x498/0x670 net/ipv4/af_inet.c:762
> sock_sendmsg_nosec net/socket.c:633 [inline]
> sock_sendmsg net/socket.c:643 [inline]
> SYSC_sendto+0x608/0x710 net/socket.c:1696
> SyS_sendto+0x8a/0xb0 net/socket.c:1664
> entry_SYSCALL_64_fastpath+0x13/0x94
> RIP: 0033:0x44b479
> RSP: 002b:00007f6213f21c08 EFLAGS: 00000286 ORIG_RAX: 000000000000002c
> RAX: ffffffffffffffda RBX: 0000000020000000 RCX: 000000000044b479
> RDX: 0000000000000041 RSI: 0000000020edd000 RDI: 0000000000000006
> RBP: 00000000007080a8 R08: 0000000020b85fe4 R09: 000000000000001c
> R10: 0000000000040005 R11: 0000000000000286 R12: 00000000ffffffff
> R13: 0000000000003760 R14: 00000000006e5820 R15: 0000000000ff8000
> origin description: ----dst_saddr@sctp_v6_get_dst
> local variable created at:
> sk_fullsock include/net/sock.h:2321 [inline]
> inet6_sk include/linux/ipv6.h:309 [inline]
> sctp_v6_get_dst+0x91/0x1630 net/sctp/ipv6.c:241
> sctp_transport_route+0x101/0x570 net/sctp/transport.c:292
> ==================================================================
> BUG: KMSAN: use of uninitialized memory in sctp_v6_cmp_addr+0x8d4/0x9f0
> net/sctp/ipv6.c:517
> CPU: 2 PID: 31056 Comm: syz-executor1 Not tainted 4.11.0-rc5+ #2944
> Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs
> 01/01/2011
> Call Trace:
> dump_stack+0x172/0x1c0 lib/dump_stack.c:42
> is_logbuf_locked mm/kmsan/kmsan.c:59 [inline]
> kmsan_report+0x12a/0x180 mm/kmsan/kmsan.c:938
> native_save_fl arch/x86/include/asm/irqflags.h:18 [inline]
> arch_local_save_flags arch/x86/include/asm/irqflags.h:72 [inline]
> arch_local_irq_save arch/x86/include/asm/irqflags.h:113 [inline]
> __msan_warning_32+0x61/0xb0 mm/kmsan/kmsan_instr.c:467
> sctp_v6_cmp_addr+0x8d4/0x9f0 net/sctp/ipv6.c:517
> sctp_v6_get_dst+0x8c7/0x1630 net/sctp/ipv6.c:290
> sctp_transport_route+0x101/0x570 net/sctp/transport.c:292
> sctp_assoc_add_peer+0x66d/0x16f0 net/sctp/associola.c:651
> sctp_sendmsg+0x35a5/0x4f90 net/sctp/socket.c:1871
> inet_sendmsg+0x498/0x670 net/ipv4/af_inet.c:762
> sock_sendmsg_nosec net/socket.c:633 [inline]
> sock_sendmsg net/socket.c:643 [inline]
> SYSC_sendto+0x608/0x710 net/socket.c:1696
> SyS_sendto+0x8a/0xb0 net/socket.c:1664
> entry_SYSCALL_64_fastpath+0x13/0x94
> RIP: 0033:0x44b479
> RSP: 002b:00007f6213f21c08 EFLAGS: 00000286 ORIG_RAX: 000000000000002c
> RAX: ffffffffffffffda RBX: 0000000020000000 RCX: 000000000044b479
> RDX: 0000000000000041 RSI: 0000000020edd000 RDI: 0000000000000006
> RBP: 00000000007080a8 R08: 0000000020b85fe4 R09: 000000000000001c
> R10: 0000000000040005 R11: 0000000000000286 R12: 00000000ffffffff
> R13: 0000000000003760 R14: 00000000006e5820 R15: 0000000000ff8000
> origin description: ----dst_saddr@sctp_v6_get_dst
> local variable created at:
> sk_fullsock include/net/sock.h:2321 [inline]
> inet6_sk include/linux/ipv6.h:309 [inline]
> sctp_v6_get_dst+0x91/0x1630 net/sctp/ipv6.c:241
> sctp_transport_route+0x101/0x570 net/sctp/transport.c:292
> ==================================================================
>
> Signed-off-by: Alexander Potapenko <[email protected]>
> ---
> net/sctp/ipv6.c | 2 ++
I've also checked the that the corresponding IPv4 code doesn't need to
be fixed (nor does KMSAN report errors in it)
> 1 file changed, 2 insertions(+)
>
> diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
> index 2a186b201ad2..a15d691829c6 100644
> --- a/net/sctp/ipv6.c
> +++ b/net/sctp/ipv6.c
> @@ -513,6 +513,8 @@ static void sctp_v6_to_addr(union sctp_addr *addr, struct in6_addr *saddr,
> addr->sa.sa_family = AF_INET6;
> addr->v6.sin6_port = port;
> addr->v6.sin6_addr = *saddr;
> + addr->v6.sin6_flowinfo = 0;
> + addr->v6.sin6_scope_id = 0;
> }
>
> /* Compare addresses exactly.
> --
> 2.13.2.932.g7449e964c-goog
>
--
Alexander Potapenko
Software Engineer
Google Germany GmbH
Erika-Mann-Straße, 33
80636 München
Geschäftsführer: Matthew Scott Sucherman, Paul Terence Manicle
Registergericht und -nummer: Hamburg, HRB 86891
Sitz der Gesellschaft: Hamburg
On Wed, Jul 19, 2017 at 3:02 AM, Alexander Potapenko <[email protected]> wrote:
> On Tue, Jul 18, 2017 at 4:55 PM, Alexander Potapenko <[email protected]> wrote:
>> KMSAN reported use of uninitialized sctp_addr->v4.sin_addr.s_addr and
>> sctp_addr->v6.sin6_scope_id in sctp_v6_cmp_addr() (see below).
>> Make sure all fields of an IPv6 address are initialized, which
>> guarantees that the IPv4 fields are also initialized.
> I'm assuming here that the IPv4 address is known to overlap with the
> IPv6 one and doesn't need separate initialization.
>
Ok, addr->v6.sin6_scope_id = 0 will fix the call trace you posted here.
addr->v6.sin6_flowinfo = 0 is to fix uninitialized
sctp_addr->v4.sin_addr.s_addr,
I couldn't see how this happens, can you also post the call trace for
v4.sin_addr.s_addr ?
Thanks
On Wed, Jul 19, 2017 at 2:58 AM, Xin Long <[email protected]> wrote:
> On Wed, Jul 19, 2017 at 3:02 AM, Alexander Potapenko <[email protected]> wrote:
>> On Tue, Jul 18, 2017 at 4:55 PM, Alexander Potapenko <[email protected]> wrote:
>>> KMSAN reported use of uninitialized sctp_addr->v4.sin_addr.s_addr and
>>> sctp_addr->v6.sin6_scope_id in sctp_v6_cmp_addr() (see below).
>>> Make sure all fields of an IPv6 address are initialized, which
>>> guarantees that the IPv4 fields are also initialized.
>> I'm assuming here that the IPv4 address is known to overlap with the
>> IPv6 one and doesn't need separate initialization.
>>
>
> Ok, addr->v6.sin6_scope_id = 0 will fix the call trace you posted here.
Sorry for the delay, I somehow missed your question.
> addr->v6.sin6_flowinfo = 0 is to fix uninitialized
> sctp_addr->v4.sin_addr.s_addr,
> I couldn't see how this happens, can you also post the call trace for
> v4.sin_addr.s_addr ?
Here it is:
==================================================================
BUG: KMSAN: use of uninitialized memory in
sctp_v6_cmp_addr+0x8d4/0x9f0 net/sctp/ipv6.c:535
CPU: 2 PID: 17306 Comm: syz-executor1 Not tainted 4.11.0-rc5+ #2944
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
Call Trace:
dump_stack+0x172/0x1c0 lib/dump_stack.c:42
is_logbuf_locked mm/kmsan/kmsan.c:59 [inline]
kmsan_report+0x12a/0x180 mm/kmsan/kmsan.c:938
native_save_fl arch/x86/include/asm/irqflags.h:18 [inline]
arch_local_save_flags arch/x86/include/asm/irqflags.h:72 [inline]
arch_local_irq_save arch/x86/include/asm/irqflags.h:113 [inline]
__msan_warning_32+0x61/0xb0 mm/kmsan/kmsan_instr.c:467
sctp_v6_cmp_addr+0x8d4/0x9f0 net/sctp/ipv6.c:535
sctp_v6_get_dst+0x8c7/0x1630 net/sctp/ipv6.c:297
sctp_transport_route+0x101/0x570 net/sctp/transport.c:292
sctp_assoc_add_peer+0x66d/0x16f0 net/sctp/associola.c:651
sctp_sendmsg+0x35a5/0x4f90 net/sctp/socket.c:1871
inet_sendmsg+0x498/0x670 net/ipv4/af_inet.c:762
sock_sendmsg_nosec net/socket.c:633 [inline]
sock_sendmsg net/socket.c:643 [inline]
SYSC_sendto+0x608/0x710 net/socket.c:1696
SyS_sendto+0x8a/0xb0 net/socket.c:1664
entry_SYSCALL_64_fastpath+0x13/0x94
RIP: 0033:0x44b479
RSP: 002b:00007f28a5bb2c08 EFLAGS: 00000286 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000020000000 RCX: 000000000044b479
RDX: 0000000000000001 RSI: 0000000020036000 RDI: 0000000000000005
RBP: 0000000000708000 R08: 00000000206e4000 R09: 000000000000001c
R10: 0000000000000000 R11: 0000000000000286 R12: 00000000ffffffff
R13: 0000000000003760 R14: 00000000006e5820 R15: 0000000000ff9000
origin description: ----dst_saddr@sctp_v6_get_dst
local variable created at:
sctp_v6_get_dst+0x91/0x1630 net/sctp/ipv6.c:236
sctp_transport_route+0x101/0x570 net/sctp/transport.c:292
==================================================================
> Thanks
--
Alexander Potapenko
Software Engineer
Google Germany GmbH
Erika-Mann-Straße, 33
80636 München
Geschäftsführer: Matthew Scott Sucherman, Paul Terence Manicle
Registergericht und -nummer: Hamburg, HRB 86891
Sitz der Gesellschaft: Hamburg
On Tue, Jul 25, 2017 at 4:27 AM, Alexander Potapenko <[email protected]> wrote:
> On Wed, Jul 19, 2017 at 2:58 AM, Xin Long <[email protected]> wrote:
>> On Wed, Jul 19, 2017 at 3:02 AM, Alexander Potapenko <[email protected]> wrote:
>>> On Tue, Jul 18, 2017 at 4:55 PM, Alexander Potapenko <[email protected]> wrote:
>>>> KMSAN reported use of uninitialized sctp_addr->v4.sin_addr.s_addr and
>>>> sctp_addr->v6.sin6_scope_id in sctp_v6_cmp_addr() (see below).
>>>> Make sure all fields of an IPv6 address are initialized, which
>>>> guarantees that the IPv4 fields are also initialized.
>>> I'm assuming here that the IPv4 address is known to overlap with the
>>> IPv6 one and doesn't need separate initialization.
>>>
>>
>> Ok, addr->v6.sin6_scope_id = 0 will fix the call trace you posted here.
> Sorry for the delay, I somehow missed your question.
>> addr->v6.sin6_flowinfo = 0 is to fix uninitialized
>> sctp_addr->v4.sin_addr.s_addr,
>> I couldn't see how this happens, can you also post the call trace for
>> v4.sin_addr.s_addr ?
> Here it is:
This one is still sctp_addr->v6.sin6_scope_id stuff.
'addr->v6.sin6_flowinfo = 0' is not actually necessay here, since
the two addr's family both are AF_INET6 and sctp_v6_cmp_addr()
doesn't use it in this path.
But it's fine, It may be good to initialize all members here.
Reviewed-by: Xin Long <[email protected]>
>
> ==================================================================
> BUG: KMSAN: use of uninitialized memory in
> sctp_v6_cmp_addr+0x8d4/0x9f0 net/sctp/ipv6.c:535
> CPU: 2 PID: 17306 Comm: syz-executor1 Not tainted 4.11.0-rc5+ #2944
> Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
> Call Trace:
> dump_stack+0x172/0x1c0 lib/dump_stack.c:42
> is_logbuf_locked mm/kmsan/kmsan.c:59 [inline]
> kmsan_report+0x12a/0x180 mm/kmsan/kmsan.c:938
> native_save_fl arch/x86/include/asm/irqflags.h:18 [inline]
> arch_local_save_flags arch/x86/include/asm/irqflags.h:72 [inline]
> arch_local_irq_save arch/x86/include/asm/irqflags.h:113 [inline]
> __msan_warning_32+0x61/0xb0 mm/kmsan/kmsan_instr.c:467
> sctp_v6_cmp_addr+0x8d4/0x9f0 net/sctp/ipv6.c:535
> sctp_v6_get_dst+0x8c7/0x1630 net/sctp/ipv6.c:297
> sctp_transport_route+0x101/0x570 net/sctp/transport.c:292
> sctp_assoc_add_peer+0x66d/0x16f0 net/sctp/associola.c:651
> sctp_sendmsg+0x35a5/0x4f90 net/sctp/socket.c:1871
> inet_sendmsg+0x498/0x670 net/ipv4/af_inet.c:762
> sock_sendmsg_nosec net/socket.c:633 [inline]
> sock_sendmsg net/socket.c:643 [inline]
> SYSC_sendto+0x608/0x710 net/socket.c:1696
> SyS_sendto+0x8a/0xb0 net/socket.c:1664
> entry_SYSCALL_64_fastpath+0x13/0x94
> RIP: 0033:0x44b479
> RSP: 002b:00007f28a5bb2c08 EFLAGS: 00000286 ORIG_RAX: 000000000000002c
> RAX: ffffffffffffffda RBX: 0000000020000000 RCX: 000000000044b479
> RDX: 0000000000000001 RSI: 0000000020036000 RDI: 0000000000000005
> RBP: 0000000000708000 R08: 00000000206e4000 R09: 000000000000001c
> R10: 0000000000000000 R11: 0000000000000286 R12: 00000000ffffffff
> R13: 0000000000003760 R14: 00000000006e5820 R15: 0000000000ff9000
> origin description: ----dst_saddr@sctp_v6_get_dst
> local variable created at:
> sctp_v6_get_dst+0x91/0x1630 net/sctp/ipv6.c:236
> sctp_transport_route+0x101/0x570 net/sctp/transport.c:292
> ==================================================================
>
>
>> Thanks
>
>
>
> --
> Alexander Potapenko
> Software Engineer
>
> Google Germany GmbH
> Erika-Mann-Straße, 33
> 80636 München
>
> Geschäftsführer: Matthew Scott Sucherman, Paul Terence Manicle
> Registergericht und -nummer: Hamburg, HRB 86891
> Sitz der Gesellschaft: Hamburg
On Tue, Jul 18, 2017 at 04:55:57PM +0200, Alexander Potapenko wrote:
> KMSAN reported use of uninitialized sctp_addr->v4.sin_addr.s_addr and
> sctp_addr->v6.sin6_scope_id in sctp_v6_cmp_addr() (see below).
> Make sure all fields of an IPv6 address are initialized, which
> guarantees that the IPv4 fields are also initialized.
Hi Alexander,
You missed to email netdev@ and thus Dave is unable to see this patch in
patchwork. Please resend it, including netdev@.
Thanks,
Marcelo
On Tue, Aug 8, 2017 at 8:47 PM, Marcelo Ricardo Leitner
<[email protected]> wrote:
> On Tue, Jul 18, 2017 at 04:55:57PM +0200, Alexander Potapenko wrote:
>> KMSAN reported use of uninitialized sctp_addr->v4.sin_addr.s_addr and
>> sctp_addr->v6.sin6_scope_id in sctp_v6_cmp_addr() (see below).
>> Make sure all fields of an IPv6 address are initialized, which
>> guarantees that the IPv4 fields are also initialized.
>
> Hi Alexander,
>
> You missed to email netdev@ and thus Dave is unable to see this patch in
> patchwork. Please resend it, including netdev@.
>
> Thanks,
> Marcelo
Sorry, I've missed your reply.
Resent including netdev@.
--
Alexander Potapenko
Software Engineer
Google Germany GmbH
Erika-Mann-Straße, 33
80636 München
Geschäftsführer: Paul Manicle, Halimah DeLaine Prado
Registergericht und -nummer: Hamburg, HRB 86891
Sitz der Gesellschaft: Hamburg