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From: Alexander Tsoy <alexander@tsoy.me>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-kernel@vger.kernel.org, stable@vger.kernel.org,
	Abaci Robot <abaci@linux.alibaba.com>,
	Jiapeng Chong <jiapeng.chong@linux.alibaba.com>,
	"David S. Miller" <davem@davemloft.net>,
	Sasha Levin <sashal@kernel.org>
Subject: Re: [PATCH 5.10 35/38] rtnetlink: Fix missing error code in rtnl_bridge_notify()
Date: Sat, 19 Jun 2021 16:06:50 +0300	[thread overview]
Message-ID: <bf18424cbc50fe0d8824557703f38b9888192475.camel@tsoy.me> (raw)
In-Reply-To: <YM2SpRA5lgMNP1W3@kroah.com>

В Сб, 19/06/2021 в 08:45 +0200, Greg Kroah-Hartman пишет:
> On Sat, Jun 19, 2021 at 02:58:28AM +0300, Alexander Tsoy wrote:
> > В Ср, 16/06/2021 в 17:33 +0200, Greg Kroah-Hartman пишет:
> > > From: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
> > > 
> > > [ Upstream commit a8db57c1d285c758adc7fb43d6e2bad2554106e1 ]
> > > 
> > > The error code is missing in this code scenario, add the error code
> > > '-EINVAL' to the return value 'err'.
> > > 
> > > Eliminate the follow smatch warning:
> > > 
> > > net/core/rtnetlink.c:4834 rtnl_bridge_notify() warn: missing error
> > > code
> > > 'err'.
> > 
> > This patch breaks systemd-resolved. It is 100% reproducible on two of
> > my systems, but there are also systems where I cannot reproduce it.
> > The
> > problem manifests itself as SERVFAIL on every DNS query.
> > 
> > Just reverting this patch from 5.10.45 fixes the problem for me.
> 
> Is Linus's tree also broken for you?  It should be reverted there
> first.

Looks like this patch was reverted in Linus's tree:
d2e381c4963663bca6f30c3b996fa4dbafe8fcb5 (rtnetlink: Fix regression in
bridge VLAN configuration)


Also after some investigation I think my problem was actually with
NetworkManager as systemd-networkd + systemd-resolved works fine.

$ grep ^dns /etc/NetworkManager/NetworkManager.conf 
dns=systemd-resolved

with this patch:

$ resolvectl
...
Link 4 (eno1)
Current Scopes: none
     Protocols: +DefaultRoute +LLMNR -mDNS -DNSOverTLS
DNSSEC=no/unsupported
   DNS Servers: 192.168.1.1 fd9f:5696:250c::1
    DNS Domain: lan

with this patch reverted:

$ resolvectl
...
Link 4 (eno1)
    Current Scopes: DNS LLMNR/IPv4 LLMNR/IPv6
         Protocols: +DefaultRoute +LLMNR -mDNS -DNSOverTLS
DNSSEC=no/unsupported
Current DNS Server: 192.168.1.1
       DNS Servers: 192.168.1.1 fd9f:5696:250c::1
        DNS Domain: lan


  reply	other threads:[~2021-06-19 13:07 UTC|newest]

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-16 15:33 [PATCH 5.10 00/38] 5.10.45-rc1 review Greg Kroah-Hartman
2021-06-16 15:33 ` [PATCH 5.10 01/38] net: ieee802154: fix null deref in parse dev addr Greg Kroah-Hartman
2021-06-16 15:33 ` [PATCH 5.10 02/38] HID: quirks: Set INCREMENT_USAGE_ON_DUPLICATE for Saitek X65 Greg Kroah-Hartman
2021-06-16 15:33 ` [PATCH 5.10 03/38] HID: a4tech: use A4_2WHEEL_MOUSE_HACK_B8 for A4TECH NB-95 Greg Kroah-Hartman
2021-06-16 15:33 ` [PATCH 5.10 04/38] HID: hid-input: add mapping for emoji picker key Greg Kroah-Hartman
2021-06-16 15:33 ` [PATCH 5.10 05/38] HID: hid-sensor-hub: Return error for hid_set_field() failure Greg Kroah-Hartman
2021-06-16 15:33 ` [PATCH 5.10 06/38] HID: quirks: Add quirk for Lenovo optical mouse Greg Kroah-Hartman
2021-06-16 15:33 ` [PATCH 5.10 07/38] HID: multitouch: set Stylus suffix for Stylus-application devices, too Greg Kroah-Hartman
2021-06-16 15:33 ` [PATCH 5.10 08/38] HID: Add BUS_VIRTUAL to hid_connect logging Greg Kroah-Hartman
2021-06-16 15:33 ` [PATCH 5.10 09/38] HID: usbhid: fix info leak in hid_submit_ctrl Greg Kroah-Hartman
2021-06-16 15:33 ` [PATCH 5.10 10/38] drm/tegra: sor: Do not leak runtime PM reference Greg Kroah-Hartman
2021-06-16 15:33 ` [PATCH 5.10 11/38] gpu: host1x: Split up client initalization and registration Greg Kroah-Hartman
2021-06-16 15:33 ` [PATCH 5.10 12/38] drm/tegra: sor: Fully initialize SOR before registration Greg Kroah-Hartman
2021-06-16 15:33 ` [PATCH 5.10 13/38] ARM: OMAP1: Fix use of possibly uninitialized irq variable Greg Kroah-Hartman
2021-06-16 15:33 ` [PATCH 5.10 14/38] ARM: OMAP2+: Fix build warning when mmc_omap is not built Greg Kroah-Hartman
2021-06-16 15:33 ` [PATCH 5.10 15/38] gfs2: Prevent direct-I/O write fallback errors from getting lost Greg Kroah-Hartman
2021-06-16 15:33 ` [PATCH 5.10 16/38] gfs2: fix a deadlock on withdraw-during-mount Greg Kroah-Hartman
2021-06-16 15:33 ` [PATCH 5.10 17/38] HID: gt683r: add missing MODULE_DEVICE_TABLE Greg Kroah-Hartman
2021-06-16 15:33 ` [PATCH 5.10 18/38] riscv: Use -mno-relax when using lld linker Greg Kroah-Hartman
2021-06-16 15:33 ` [PATCH 5.10 19/38] gfs2: Fix use-after-free in gfs2_glock_shrink_scan Greg Kroah-Hartman
2021-06-16 15:33 ` [PATCH 5.10 20/38] scsi: target: core: Fix warning on realtime kernels Greg Kroah-Hartman
2021-06-16 15:33 ` [PATCH 5.10 21/38] ethernet: myri10ge: Fix missing error code in myri10ge_probe() Greg Kroah-Hartman
2021-06-16 15:33 ` [PATCH 5.10 22/38] scsi: qedf: Do not put host in qedf_vport_create() unconditionally Greg Kroah-Hartman
2021-06-16 15:33 ` [PATCH 5.10 23/38] Bluetooth: Add a new USB ID for RTL8822CE Greg Kroah-Hartman
2021-06-16 15:33 ` [PATCH 5.10 24/38] scsi: scsi_devinfo: Add blacklist entry for HPE OPEN-V Greg Kroah-Hartman
2021-06-16 15:33 ` [PATCH 5.10 25/38] nvme-loop: reset queue count to 1 in nvme_loop_destroy_io_queues() Greg Kroah-Hartman
2021-06-16 15:33 ` [PATCH 5.10 26/38] nvme-loop: clear NVME_LOOP_Q_LIVE when nvme_loop_configure_admin_queue() fails Greg Kroah-Hartman
2021-06-16 15:33 ` [PATCH 5.10 27/38] nvme-loop: check for NVME_LOOP_Q_LIVE in nvme_loop_destroy_admin_queue() Greg Kroah-Hartman
2021-06-16 15:33 ` [PATCH 5.10 28/38] nvme-loop: do not warn for deleted controllers during reset Greg Kroah-Hartman
2021-06-16 15:33 ` [PATCH 5.10 29/38] net: ipconfig: Dont override command-line hostnames or domains Greg Kroah-Hartman
2021-06-16 15:33 ` [PATCH 5.10 30/38] drm/amd/display: Allow bandwidth validation for 0 streams Greg Kroah-Hartman
2021-06-16 15:33 ` [PATCH 5.10 31/38] drm/amdgpu: refine amdgpu_fru_get_product_info Greg Kroah-Hartman
2021-06-16 15:33 ` [PATCH 5.10 32/38] drm/amd/display: Fix overlay validation by considering cursors Greg Kroah-Hartman
2021-06-16 16:02   ` Harry Wentland
2021-06-16 15:33 ` [PATCH 5.10 33/38] drm/amd/display: Fix potential memory leak in DMUB hw_init Greg Kroah-Hartman
2021-06-16 15:33 ` [PATCH 5.10 34/38] drm/amd/amdgpu:save psp ring wptr to avoid attack Greg Kroah-Hartman
2021-06-16 15:33 ` [PATCH 5.10 35/38] rtnetlink: Fix missing error code in rtnl_bridge_notify() Greg Kroah-Hartman
2021-06-18 23:58   ` Alexander Tsoy
2021-06-19  6:45     ` Greg Kroah-Hartman
2021-06-19 13:06       ` Alexander Tsoy [this message]
2021-06-16 15:33 ` [PATCH 5.10 36/38] net/x25: Return the correct errno code Greg Kroah-Hartman
2021-06-16 15:33 ` [PATCH 5.10 37/38] net: " Greg Kroah-Hartman
2021-06-16 15:33 ` [PATCH 5.10 38/38] fib: " Greg Kroah-Hartman
2021-06-16 21:07 ` [PATCH 5.10 00/38] 5.10.45-rc1 review Fox Chen
2021-06-16 22:40 ` Florian Fainelli
2021-06-17  6:51 ` Pavel Machek
2021-06-17  9:04 ` Naresh Kamboju
2021-06-17 10:27 ` Samuel Zou
2021-06-17 11:00 ` Sudip Mukherjee
2021-06-17 21:39 ` Guenter Roeck

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