------------[ 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#0: syz.0.4027/15139 WARNING: ./include/net/netdev_lock.h:72 at netdev_queue_get_dma_dev+0x19c/0x1ac net/core/netdev_queues.c:43, CPU#0: syz.0.4027/15139 Modules linked in: CPU: 0 UID: 0 PID: 15139 Comm: syz.0.4027 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 : ffff80008752bb70 x29: ffff80008752bb70 x28: f7f0000007f56678 x27: 0000000000000000 x26: f3f000000be0f000 x25: fdf0000036bdcd18 x24: fdf0000036bdcb80 x23: ffff80008752bbc8 x22: 0000000020000100 x21: 0000000000000000 x20: 0000000000000000 x19: f3f000000be0f000 x18: 0000000000000001 x17: 0000000000000000 x16: faf00000034750c0 x15: 0000000000000000 x14: f6f00000035a2280 x13: 000000000000015c x12: 0000000000000000 x11: 00000000000000c0 x10: dfae8e5f66ba79e9 x9 : 75f2bcafd11afb2d x8 : f6f00000035a3278 x7 : 0000000000000004 x6 : 0000000000000000 x5 : f6f00000035a2200 x4 : fbffff3fffffffff x3 : 000000000000ffff x2 : 0000000000000000 x1 : 0000000000000000 x0 : f6f00000035a2200 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 ]---