------------[ cut here ]------------ RTNL: assertion failed at ./include/net/netdev_lock.h (72) WARNING: ./include/net/netdev_lock.h:72 at netdev_assert_locked_ops_compat include/net/netdev_lock.h:72 [inline], CPU#1: syz.0.3463/13466 WARNING: ./include/net/netdev_lock.h:72 at netdev_queue_get_dma_dev+0x19c/0x1ac net/core/netdev_queues.c:43, CPU#1: syz.0.3463/13466 Modules linked in: CPU: 1 UID: 0 PID: 13466 Comm: syz.0.3463 Tainted: G L syzkaller #0 PREEMPT Tainted: [L]=SOFTLOCKUP Hardware name: linux,dummy-virt (DT) pstate: 61402009 (nZCv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--) pc : netdev_assert_locked_ops_compat include/net/netdev_lock.h:72 [inline] pc : netdev_queue_get_dma_dev+0x19c/0x1ac net/core/netdev_queues.c:43 lr : netdev_assert_locked_ops_compat include/net/netdev_lock.h:72 [inline] lr : netdev_queue_get_dma_dev+0x19c/0x1ac net/core/netdev_queues.c:43 sp : ffff8000833c3b70 x29: ffff8000833c3b70 x28: f1f0000015e23b78 x27: 0000000000000000 x26: f8f000000ac25000 x25: fbf000000ce77d18 x24: fbf000000ce77b80 x23: ffff8000833c3bc8 x22: 0000000020000100 x21: 0000000000000000 x20: 0000000000000000 x19: f8f000000ac25000 x18: 0000000000000000 x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000 x14: 000000000000027c x13: 00000000f5257d14 x12: 0000af4b34762318 x11: 00000000000000c0 x10: 9b9d6f1c518fcdc7 x9 : 0c8b16c3af277f7e x8 : faf000000e61e578 x7 : 0000000000000004 x6 : 0000000000000000 x5 : faf000000e61d500 x4 : fbffff3fffffffff x3 : 000000000000ffff x2 : 0000000000000000 x1 : 0000000000000000 x0 : faf000000e61d500 Call trace: netdev_assert_locked_ops_compat include/net/netdev_lock.h:72 [inline] (P) netdev_queue_get_dma_dev+0x19c/0x1ac net/core/netdev_queues.c:43 (P) zcrx_register_netdev io_uring/zcrx.c:831 [inline] io_register_zcrx+0x370/0x9d0 io_uring/zcrx.c:983 __io_uring_register io_uring/register.c:942 [inline] __do_sys_io_uring_register io_uring/register.c:1040 [inline] __se_sys_io_uring_register io_uring/register.c:1017 [inline] __arm64_sys_io_uring_register+0x3ec/0xdb0 io_uring/register.c:1017 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x54/0x10c arch/arm64/kernel/syscall.c:49 el0_svc_common.constprop.0+0x40/0xe0 arch/arm64/kernel/syscall.c:121 do_el0_svc+0x1c/0x34 arch/arm64/kernel/syscall.c:140 el0_svc+0x38/0x1fc arch/arm64/kernel/entry-common.c:736 el0t_64_sync_handler+0xa0/0xf0 arch/arm64/kernel/entry-common.c:755 el0t_64_sync+0x1a4/0x1a8 arch/arm64/kernel/entry.S:594 ---[ end trace 0000000000000000 ]---