[ 13.812811][ T261] ip (261) used greatest stack depth: 24736 bytes left [ 18.419846][ T321] ip (321) used greatest stack depth: 23744 bytes left [ 42.073501][ C1] [ 42.073688][ C1] ============================= [ 42.073918][ C1] WARNING: suspicious RCU usage [ 42.074148][ C1] 6.15.0-rc1-virtme #1 Not tainted [ 42.074393][ C1] ----------------------------- [ 42.074623][ C1] drivers/net/veth.c:907 suspicious rcu_dereference_check() usage! [ 42.074959][ C1] [ 42.074959][ C1] other info that might help us debug this: [ 42.074959][ C1] [ 42.075414][ C1] [ 42.075414][ C1] rcu_scheduler_active = 2, debug_locks = 1 [ 42.075756][ C1] no locks held by ksoftirqd/1/22. [ 42.075987][ C1] [ 42.075987][ C1] stack backtrace: [ 42.076279][ C1] CPU: 1 UID: 0 PID: 22 Comm: ksoftirqd/1 Not tainted 6.15.0-rc1-virtme #1 PREEMPT(full) [ 42.076284][ C1] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 42.076286][ C1] Call Trace: [ 42.076288][ C1] [ 42.076291][ C1] dump_stack_lvl+0xb0/0xd0 [ 42.076301][ C1] lockdep_rcu_suspicious+0x166/0x270 [ 42.076311][ C1] veth_xdp_rcv+0x824/0xc10 [ 42.076317][ C1] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 42.076324][ C1] ? arch_stack_walk+0x8b/0xf0 [ 42.076334][ C1] ? __pfx_veth_xdp_rcv+0x10/0x10 [ 42.076338][ C1] ? ret_from_fork_asm+0x1a/0x30 [ 42.076348][ C1] ? rcu_read_lock_any_held+0x7e/0xb0 [ 42.076353][ C1] ? stack_depot_save_flags+0x42e/0x7a0 [ 42.076360][ C1] ? validate_chain+0x166/0x4d0 [ 42.076369][ C1] veth_poll+0x121/0x400 [ 42.076373][ C1] ? __pfx_veth_poll+0x10/0x10 [ 42.076376][ C1] ? rcu_do_batch+0x34c/0xf20 [ 42.076386][ C1] ? dl_scaled_delta_exec+0xe0/0x2e0 [ 42.076401][ C1] ? rcu_read_lock_any_held+0x43/0xb0 [ 42.076404][ C1] ? validate_chain+0x166/0x4d0 [ 42.076415][ C1] __napi_poll.constprop.0+0xa2/0x460 [ 42.076420][ C1] ? rcu_is_watching+0x12/0xc0 [ 42.076427][ C1] net_rx_action+0x542/0xd00 [ 42.076437][ C1] ? lockdep_hardirqs_on+0x7c/0x110 [ 42.076442][ C1] ? __pfx_net_rx_action+0x10/0x10 [ 42.076445][ C1] ? rcu_is_watching+0x12/0xc0 [ 42.076449][ C1] ? trace_sched_exit_tp+0xdb/0x140 [ 42.076456][ C1] ? __schedule+0x86a/0x1b00 [ 42.076466][ C1] ? __pfx___schedule+0x10/0x10 [ 42.076479][ C1] handle_softirqs+0x218/0x620 [ 42.076487][ C1] ? __pfx_run_ksoftirqd+0x10/0x10 [ 42.076493][ C1] run_ksoftirqd+0x3f/0x70 [ 42.076496][ C1] smpboot_thread_fn+0x307/0x960 [ 42.076501][ C1] ? __pfx_smpboot_thread_fn+0x10/0x10 [ 42.076506][ C1] kthread+0x37b/0x600 [ 42.076511][ C1] ? __pfx_kthread+0x10/0x10 [ 42.076513][ C1] ? ret_from_fork+0x1b/0x70 [ 42.076517][ C1] ? __lock_release+0x5d/0x170 [ 42.076523][ C1] ? rcu_is_watching+0x12/0xc0 [ 42.076527][ C1] ? __pfx_kthread+0x10/0x10 [ 42.076531][ C1] ret_from_fork+0x31/0x70 [ 42.076534][ C1] ? __pfx_kthread+0x10/0x10 [ 42.076538][ C1] ret_from_fork_asm+0x1a/0x30 [ 42.076552][ C1]