[ 14.272568][ T263] ip (263) used greatest stack depth: 24192 bytes left [ 14.416628][ T264] ip (264) used greatest stack depth: 24152 bytes left [ 17.678174][ T286] tc (286) used greatest stack depth: 23808 bytes left [ 27.768515][ C2] [ 27.768831][ C2] ============================= [ 27.769090][ C2] WARNING: suspicious RCU usage [ 27.769335][ C2] 6.15.0-rc1-virtme #1 Not tainted [ 27.769598][ C2] ----------------------------- [ 27.769848][ C2] drivers/net/veth.c:907 suspicious rcu_dereference_check() usage! [ 27.770211][ C2] [ 27.770211][ C2] other info that might help us debug this: [ 27.770211][ C2] [ 27.770692][ C2] [ 27.770692][ C2] rcu_scheduler_active = 2, debug_locks = 1 [ 27.771055][ C2] no locks held by ksoftirqd/2/27. [ 27.771310][ C2] [ 27.771310][ C2] stack backtrace: [ 27.771632][ C2] CPU: 2 UID: 0 PID: 27 Comm: ksoftirqd/2 Not tainted 6.15.0-rc1-virtme #1 PREEMPT(full) [ 27.771636][ C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 27.771639][ C2] Call Trace: [ 27.771641][ C2] [ 27.771644][ C2] dump_stack_lvl+0xb0/0xd0 [ 27.771657][ C2] lockdep_rcu_suspicious+0x166/0x270 [ 27.771669][ C2] veth_xdp_rcv+0x824/0xc10 [ 27.771676][ C2] ? ip_local_deliver_finish+0x2c6/0x490 [ 27.771686][ C2] ? ip_local_deliver_finish+0x2d0/0x490 [ 27.771692][ C2] ? ip_local_deliver+0x193/0x470 [ 27.771698][ C2] ? __pfx_veth_xdp_rcv+0x10/0x10 [ 27.771705][ C2] ? ip_rcv_finish_core+0x51e/0x1320 [ 27.771720][ C2] veth_poll+0x121/0x400 [ 27.771724][ C2] ? __pfx_veth_poll+0x10/0x10 [ 27.771736][ C2] ? find_held_lock+0x2b/0x80 [ 27.771741][ C2] ? process_backlog+0xbba/0x13e0 [ 27.771746][ C2] ? __lock_release+0x5d/0x170 [ 27.771752][ C2] ? rcu_is_watching+0x12/0xc0 [ 27.771758][ C2] ? _raw_spin_unlock_irq+0x28/0x50 [ 27.771766][ C2] ? _raw_spin_unlock_irq+0x33/0x50 [ 27.771770][ C2] ? process_backlog+0xbba/0x13e0 [ 27.771775][ C2] ? rcu_is_watching+0x12/0xc0 [ 27.771781][ C2] __napi_poll.constprop.0+0xa2/0x460 [ 27.771784][ C2] ? rcu_is_watching+0x12/0xc0 [ 27.771790][ C2] net_rx_action+0x542/0xd00 [ 27.771800][ C2] ? lockdep_hardirqs_on+0x7c/0x110 [ 27.771804][ C2] ? __pfx_net_rx_action+0x10/0x10 [ 27.771808][ C2] ? rcu_is_watching+0x12/0xc0 [ 27.771812][ C2] ? trace_sched_exit_tp+0xdb/0x140 [ 27.771820][ C2] ? __schedule+0x86a/0x1b00 [ 27.771830][ C2] ? __pfx___schedule+0x10/0x10 [ 27.771842][ C2] handle_softirqs+0x218/0x620 [ 27.771851][ C2] ? __pfx_run_ksoftirqd+0x10/0x10 [ 27.771856][ C2] run_ksoftirqd+0x3f/0x70 [ 27.771859][ C2] smpboot_thread_fn+0x307/0x960 [ 27.771865][ C2] ? __pfx_smpboot_thread_fn+0x10/0x10 [ 27.771869][ C2] kthread+0x37b/0x600 [ 27.771874][ C2] ? __pfx_kthread+0x10/0x10 [ 27.771876][ C2] ? ret_from_fork+0x1b/0x70 [ 27.771881][ C2] ? __lock_release+0x5d/0x170 [ 27.771885][ C2] ? rcu_is_watching+0x12/0xc0 [ 27.771889][ C2] ? __pfx_kthread+0x10/0x10 [ 27.771894][ C2] ret_from_fork+0x31/0x70 [ 27.771897][ C2] ? __pfx_kthread+0x10/0x10 [ 27.771900][ C2] ret_from_fork_asm+0x1a/0x30 [ 27.771916][ C2]