Message-ID: <525DB349B3FB5444AE057A887CB2A8D88EF4BB@nice.asicdesigners.com>
Date:	Fri, 19 Sep 2014 21:42:47 +0000
From:	Anish Bhatt <anish@...lsio.com>
To:	Guenter Roeck <linux@...ck-us.net>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	"rdunlap@...radead.org" <rdunlap@...radead.org>
CC:	"linux-next@...r.kernel.org" <linux-next@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"David S. Miller" <davem@...emloft.net>,
	"James E.J. Bottomley" <JBottomley@...allels.com>
Subject: RE: linux-next: Tree for Sep 19

If you're just bisecting, you probably want my very first commit that started this :
https://git.kernel.org/cgit/linux/kernel/git/davem/net.git/commit/?id=c99d667e852766afc755fa4430be64bb94e5ea1c

Essentially, the bnx2 modules would silently disable ipv6 support if ipv6 was 
compiled as a module, but cnic was inbuilt. Then it turned out that the select
on CNIC would override the tristate for CNIC, causing build failures.

The fix for CNIC caused introduced recursive dependencies, requiring this :
https://git.kernel.org/cgit/linux/kernel/git/davem/net.git/commit/?id=5d6be6a5d4864712832822efeb9c2d54e4063949

which further required this :
https://git.kernel.org/cgit/linux/kernel/git/davem/net.git/commit/?id=95cd6f488d164de462a8279e802a0ad05c33d167

Turns out this was not enough either, requiring this fix :
https://git.kernel.org/cgit/linux/kernel/git/davem/net.git/commit/?id=6a38792ca8a5da28f65dc42eeb73d9a431f8d0fd

and so on and so forth. According to the last message, Randy might be
 working on a proper fix for this :
http://www.spinics.net/lists/linux-scsi/msg78416.html

Most of this seems to be that the default configs do not select NET, but select SCSI_FC* 
which used to previously select NET on it's own (via SCSI_NET_LINK), maybe this 
is wrong too ?
-Anish

________________________________________
From: Guenter Roeck [groeck7@...il.com] on behalf of Guenter Roeck [linux@...ck-us.net]
Sent: Friday, September 19, 2014 2:14 PM
To: Stephen Rothwell
Cc: linux-next@...r.kernel.org; linux-kernel@...r.kernel.org; Anish Bhatt; David S. Miller; James E.J. Bottomley
Subject: Re: linux-next: Tree for Sep 19

On Fri, Sep 19, 2014 at 04:58:17PM +1000, Stephen Rothwell wrote:
> Hi all,
>
> Changes since 20140917:
>
> The fsl tree still had its build failure so I used the version from
> next-20140917.
>
> The v4l-dvb tree lost its build failure.
>
> The security tree gained a conflict against the file-locks tree.
>
> Non-merge commits (relative to Linus' tree): 6014
>  5488 files changed, 217522 insertions(+), 129375 deletions(-)
>
> ----------------------------------------------------------------------------
>
Guess this is most difficult one.

mips:nlm_xlp_defconfig:

warning: (SCSI_BNX2X_FCOE && LIBFCOE && TCM_QLA2XXX) selects LIBFC which has
unmet direct dependencies (SCSI_LOWLEVEL && SCSI && SCSI_FC_ATTRS)
warning: (SCSI_BNX2X_FCOE && LIBFCOE && TCM_QLA2XXX) selects LIBFC which has
unmet direct dependencies (SCSI_LOWLEVEL && SCSI && SCSI_FC_ATTRS)

followed by:

ERROR: "scsi_is_fc_rport" [drivers/scsi/libfc/libfc.ko] undefined!
ERROR: "fc_get_event_number" [drivers/scsi/libfc/libfc.ko] undefined!
ERROR: "skb_trim" [drivers/scsi/libfc/libfc.ko] undefined!
ERROR: "fc_host_post_event" [drivers/scsi/libfc/libfc.ko] undefined!
ERROR: "__alloc_skb" [drivers/scsi/libfc/libfc.ko] undefined!
ERROR: "fc_remote_port_delete" [drivers/scsi/libfc/libfc.ko] undefined!
ERROR: "kfree_skb" [drivers/scsi/libfc/libfc.ko] undefined!
ERROR: "fc_block_scsi_eh" [drivers/scsi/libfc/libfc.ko] undefined!
ERROR: "fc_remote_port_add" [drivers/scsi/libfc/libfc.ko] undefined!
ERROR: "skb_put" [drivers/scsi/libfc/libfc.ko] undefined!
ERROR: "skb_clone" [drivers/scsi/fcoe/libfcoe.ko] undefined!
ERROR: "dev_get_by_name" [drivers/scsi/fcoe/libfcoe.ko] undefined!
ERROR: "register_netdevice_notifier" [drivers/scsi/fcoe/libfcoe.ko] undefined!
ERROR: "unregister_netdevice_notifier" [drivers/scsi/fcoe/libfcoe.ko] undefined!
ERROR: "skb_trim" [drivers/scsi/fcoe/libfcoe.ko] undefined!
ERROR: "__netdev_alloc_skb" [drivers/scsi/fcoe/libfcoe.ko] undefined!
ERROR: "__pskb_pull_tail" [drivers/scsi/fcoe/libfcoe.ko] undefined!
ERROR: "skb_queue_purge" [drivers/scsi/fcoe/libfcoe.ko] undefined!
ERROR: "__ethtool_get_settings" [drivers/scsi/fcoe/libfcoe.ko] undefined!
ERROR: "skb_push" [drivers/scsi/fcoe/libfcoe.ko] undefined!
ERROR: "skb_pull" [drivers/scsi/fcoe/libfcoe.ko] undefined!
ERROR: "init_net" [drivers/scsi/fcoe/libfcoe.ko] undefined!
ERROR: "skb_queue_tail" [drivers/scsi/fcoe/libfcoe.ko] undefined!
ERROR: "kfree_skb" [drivers/scsi/fcoe/libfcoe.ko] undefined!
ERROR: "skb_dequeue" [drivers/scsi/fcoe/libfcoe.ko] undefined!
ERROR: "consume_skb" [drivers/scsi/fcoe/libfcoe.ko] undefined!
ERROR: "dev_queue_xmit" [drivers/scsi/fcoe/libfcoe.ko] undefined!
ERROR: "skb_put" [drivers/scsi/fcoe/libfcoe.ko] undefined!
ERROR: "dev_get_stats" [drivers/scsi/fcoe/libfcoe.ko] undefined!

The problem is that there are many different errors seen at various stages
during bisect, making a bisect a bit tricky.

--------
At commit 'xfrm: Generate blackhole routes only from route lookup functions',
the error is:

drivers/scsi/scsi_transport_fc.c: In function 'fc_host_post_event':
drivers/scsi/scsi_transport_fc.c:543:7: error: 'scsi_nl_sock' undeclared
drivers/scsi/scsi_transport_fc.c: In function 'fc_host_post_vendor_event':
drivers/scsi/scsi_transport_fc.c:611:7: error: 'scsi_nl_sock' undeclared

--------
At commit 'bnx2i/bnx2fc : fix randconfig error in next-20140909' and
'scsi_netlink : Make SCSI_NETLINK dependent on NET instead of selecting NET',
the error is:

drivers/built-in.o: In function `scsi_nl_rcv_msg':
drivers/scsi/scsi_netlink.c:114: undefined reference to `netlink_ack'
drivers/scsi/scsi_netlink.c:116: undefined reference to `skb_pull'
drivers/scsi/scsi_netlink.c:80: undefined reference to `netlink_capable'
drivers/built-in.o: In function `netlink_kernel_create':
include/linux/netlink.h:60: undefined reference to `init_net'
include/linux/netlink.h:60: undefined reference to `init_net'
include/linux/netlink.h:60: undefined reference to `__netlink_kernel_create'
drivers/built-in.o: In function `scsi_netlink_exit':
drivers/scsi/scsi_netlink.c:153: undefined reference to `netlink_kernel_release'

-------

Bisect reports commit 5d6be6a5d486 ('scsi_netlink : Make SCSI_NETLINK dependent
on NET instead of selecting NET') as first bad commit.

bisect log:

# bad: [6a10bca9b608df445baa23c3bfafc510d93d425b] Add linux-next specific files for 20140919
# good: [9e82bf014195d6f0054982c463575cdce24292be] Linux 3.17-rc5
git bisect start 'HEAD' 'v3.17-rc5'
# bad: [fde058e2322b9098251d7cf798cac4327a29c004] Merge remote-tracking branch 'drm/drm-next'
git bisect bad fde058e2322b9098251d7cf798cac4327a29c004
# bad: [8fdb4a28beeda1e6626c43b70cd0575512173c3a] Merge remote-tracking branch 'v4l-dvb/master'
git bisect bad 8fdb4a28beeda1e6626c43b70cd0575512173c3a
# bad: [067cd6bcf6f5be3fd82b7e71cbc27f1e0695d673] Merge remote-tracking branch 'tegra/for-next'
git bisect bad 067cd6bcf6f5be3fd82b7e71cbc27f1e0695d673
# good: [37bd1119d8b2e8bdf4e211e096da6fb84c0af45e] arm-soc: document merges
git bisect good 37bd1119d8b2e8bdf4e211e096da6fb84c0af45e
# bad: [0f50dd028d3b77bd422df1f4609510a8f70c88c0] Merge remote-tracking branch 'ep93xx/ep93xx-for-next'
git bisect bad 0f50dd028d3b77bd422df1f4609510a8f70c88c0
# good: [bcca6923950b0d952dd03855dc6aadc0848d3e22] Merge remote-tracking branch 'sparc/master'
git bisect good bcca6923950b0d952dd03855dc6aadc0848d3e22
# bad: [99f3bddf52a8dc454ade167099a9e6d5b6dcd8f6] Merge remote-tracking branch 'ipsec/master'
git bisect bad 99f3bddf52a8dc454ade167099a9e6d5b6dcd8f6
# good: [a7f8289d1291a8e1b9d4e39c770467d3dac0d382] Merge tag 'linux-can-fixes-for-3.17-20140911' of git://gitorious.org/linux-can/linux-can
git bisect good a7f8289d1291a8e1b9d4e39c770467d3dac0d382
# good: [48c20407f49039d8da155ca00877ec5f057799e6] r8169: fix the default setting of rx vlan
git bisect good 48c20407f49039d8da155ca00877ec5f057799e6
# good: [d6ce2628f32271c037a8c12e1994c9fba3a4af49] cxgb4: Don't allocate adapter structure for all PF's
git bisect good d6ce2628f32271c037a8c12e1994c9fba3a4af49
# bad: [f92ee61982d6da15a9e49664ecd6405a15a2ee56] xfrm: Generate blackhole routes only from route lookup functions
git bisect bad f92ee61982d6da15a9e49664ecd6405a15a2ee56
# bad: [23a3c99201954d8ffe92e599e3c3039985280f1b] bnx2i/bnx2fc : fix randconfig error in next-20140909
git bisect bad 23a3c99201954d8ffe92e599e3c3039985280f1b
# bad: [5d6be6a5d4864712832822efeb9c2d54e4063949] scsi_netlink : Make SCSI_NETLINK dependent on NET instead of selecting NET
git bisect bad 5d6be6a5d4864712832822efeb9c2d54e4063949
# first bad commit: [5d6be6a5d4864712832822efeb9c2d54e4063949] scsi_netlink : Make SCSI_NETLINK dependent on NET instead of selecting NET--
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