Greeting,

FYI, we noticed the following commit (built with gcc-9):

commit: 81bb8ff453eb20410103684e277befb5bc96f025 ("[PATCH net-next v2 06/12] net: assert the rtnl lock is held when calling __netif_set_xps_queue")
url: https://github.com/0day-ci/linux/commits/Antoine-Tenart/net-xps-improve-the-xps-maps-handling/20210209-081506
base: https://git.kernel.org/cgit/linux/kernel/git/davem/net-next.git 6626a0266566c5aea16178c5e6cd7fc4db3f2f56

in testcase: boot

on test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -smp 2 -m 8G

caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):


+-------------------------------------------------------------------------+------------+------------+
|                                                                         | 65df35412a | 81bb8ff453 |
+-------------------------------------------------------------------------+------------+------------+
| assertion_failed                                                        | 0          | 35         |
| WARNING:at_net/core/dev.c:#__netif_set_xps_queue                        | 0          | 35         |
| EIP:__netif_set_xps_queue                                               | 0          | 35         |
+-------------------------------------------------------------------------+------------+------------+


If you fix the issue, kindly add following tag
Reported-by: kernel test robot <oliver.sang@intel.com>


[  104.847236] ------------[ cut here ]------------
[  104.848653] RTNL: assertion failed at net/core/dev.c (2619)
[  104.850136] WARNING: CPU: 0 PID: 1 at net/core/dev.c:2619 __netif_set_xps_queue+0xb37/0xc00
[  104.851720] Modules linked in:
[  104.852896] CPU: 0 PID: 1 Comm: swapper/0 Tainted: G S      W         5.11.0-rc4-00641-g81bb8ff453eb #1
[  104.854579] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
[  104.856184] EIP: __netif_set_xps_queue+0xb37/0xc00
[  104.857556] Code: 5d c3 80 3d 30 2e 27 d6 00 0f 85 14 f5 ff ff 68 3b 0a 00 00 68 ab 13 65 d5 68 44 e8 d9 d4 c6 05 30 2e 27 d6 01 e8 6e 70 89 00 <0f> 0b 83 c4 0c e9 ef f4 ff ff 8b 5d c4 85 db 0f 84 7a fe ff ff 8b
[  104.861089] EAX: 0000002f EBX: 00000000 ECX: 00000001 EDX: 00000000
[  104.862646] ESI: 00000000 EDI: 00000001 EBP: c1c67d94 ESP: c1c67d34
[  104.864181] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00010282
[  104.865807] CR0: 80050033 CR2: 00000000 CR3: 16932000 CR4: 000406d0
[  104.867346] Call Trace:
[  104.868607]  ? rcu_read_lock_sched_held+0x47/0x80
[  104.870085]  ? find_next_bit+0xf/0x20
[  104.871451]  ? cpumask_next+0x1f/0x40
[  104.872818]  ? cpumask_next_wrap+0x21/0x60
[  104.874195]  virtnet_set_affinity+0x135/0x1a0
[  104.875604]  init_vqs+0x212/0x260
[  104.876932]  virtnet_probe+0x38a/0x880
[  104.878266]  ? virtio_vdpa_get_status+0x1c/0x20
[  104.879649]  virtio_dev_probe+0x1a8/0x280
[  104.881046]  really_probe+0x18d/0x400
[  104.882368]  driver_probe_device+0xd9/0x1a0
[  104.883690]  ? mutex_lock_nested+0x19/0x20
[  104.885038]  ? __device_driver_lock+0x25/0x60
[  104.886387]  device_driver_attach+0x49/0x60
[  104.887710]  __driver_attach+0x81/0x140
[  104.889018]  ? bind_store+0x100/0x100
[  104.890286]  ? device_driver_attach+0x60/0x60
[  104.891584]  bus_for_each_dev+0x5d/0xa0
[  104.892868]  driver_attach+0x19/0x20
[  104.894063]  ? device_driver_attach+0x60/0x60
[  104.895304]  bus_add_driver+0x117/0x1e0
[  104.896497]  driver_register+0x66/0xc0
[  104.897707]  ? veth_init+0x14/0x14
[  104.898842]  register_virtio_driver+0x1b/0x40
[  104.900053]  virtio_net_driver_init+0x61/0x86
[  104.901299]  do_one_initcall+0x60/0x320
[  104.902500]  ? rcu_read_lock_sched_held+0x47/0x80
[  104.903732]  ? trace_initcall_level+0x84/0xac
[  104.904976]  kernel_init_freeable+0x208/0x257
[  104.906177]  ? rest_init+0x22d/0x22d
[  104.907304]  kernel_init+0xd/0xf3
[  104.908386]  ret_from_fork+0x1c/0x28
[  104.909580] irq event stamp: 51665545
[  104.910652] hardirqs last  enabled at (51665553): [<cdfc328d>] console_unlock+0x4cd/0x5e0
[  104.912085] hardirqs last disabled at (51665560): [<cdfc31f5>] console_unlock+0x435/0x5e0
[  104.913537] softirqs last  enabled at (51664338): [<d3016930>] __do_softirq+0x2f0/0x44b
[  104.914904] softirqs last disabled at (51664333): [<cdecb405>] call_on_stack+0x45/0x60
[  104.916226] ---[ end trace b6addf977bb74596 ]---



To reproduce:

        # build kernel
	cd linux
	cp config-5.11.0-rc4-00641-g81bb8ff453eb .config
	make HOSTCC=gcc-9 CC=gcc-9 ARCH=i386 olddefconfig prepare modules_prepare bzImage

        git clone https://github.com/intel/lkp-tests.git
        cd lkp-tests
        bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email



Thanks,
Oliver Sang