Hello, Sounds like ptp_classify_raw() should be reached with IRQs disabled to safely call BPF_PROG_RUN(). I am just unsure where, down the road, the proper context should have been set. 08:46:58 darkmatter kernel: BUG: assuming atomic context at net/core/ptp_classifier.c:106 Jul 17 08:46:58 darkmatter kernel: in_atomic(): 0, irqs_disabled(): 0, pid: 1129, name: irq/35-enp4s0 Jul 17 08:46:58 darkmatter kernel: CPU: 1 PID: 1129 Comm: irq/35-enp4s0 Not tainted 5.2.0-rt1 #1 Jul 17 08:46:58 darkmatter kernel: Hardware name: Hewlett-Packard p7-1512/2ADA, BIOS 8.15 02/05/2013 Jul 17 08:46:58 darkmatter kernel: Call Trace: Jul 17 08:46:58 darkmatter kernel: dump_stack+0x67/0x90 Jul 17 08:46:58 darkmatter kernel: __cant_sleep.cold+0x68/0x74 Jul 17 08:46:58 darkmatter kernel: ptp_classify_raw+0x1f/0xa0 Jul 17 08:46:58 darkmatter kernel: skb_defer_rx_timestamp+0x5a/0xb0 Jul 17 08:46:58 darkmatter kernel: netif_receive_skb_internal+0x34/0xe0 Jul 17 08:46:58 darkmatter kernel: napi_gro_receive+0x66/0x1c0 Jul 17 08:46:58 darkmatter kernel: rtl8169_poll+0x216/0x610 [r8169] Jul 17 08:46:58 darkmatter kernel: net_rx_action+0x208/0x490 Jul 17 08:46:58 darkmatter kernel: ? __switch_to_asm+0x40/0x70 Jul 17 08:46:58 darkmatter kernel: ? __switch_to_asm+0x40/0x70 Jul 17 08:46:58 darkmatter kernel: ? __switch_to_asm+0x34/0x70 Jul 17 08:46:58 darkmatter kernel: ? __switch_to_asm+0x40/0x70 Jul 17 08:46:58 darkmatter kernel: ? __switch_to_asm+0x34/0x70 Jul 17 08:46:58 darkmatter kernel: ? __switch_to_asm+0x40/0x70 Jul 17 08:46:58 darkmatter kernel: ? sched_clock+0x5/0x10 Jul 17 08:46:58 darkmatter kernel: ? sched_clock_cpu+0x15/0x100 Jul 17 08:46:58 darkmatter kernel: __do_softirq+0x140/0x3c9 Jul 17 08:46:58 darkmatter kernel: ? irq_finalize_oneshot.part.0+0xd0/0xd0 Jul 17 08:46:58 darkmatter kernel: ? irq_thread+0x95/0x1d0 Jul 17 08:46:58 darkmatter kernel: __local_bh_enable_ip+0x13d/0x160 Jul 17 08:46:58 darkmatter kernel: irq_forced_thread_fn+0x70/0x80 Jul 17 08:46:58 darkmatter kernel: irq_thread+0xf6/0x1d0 Jul 17 08:46:58 darkmatter kernel: ? preempt_count_add+0x88/0xc0 Jul 17 08:46:58 darkmatter kernel: ? wake_threads_waitq+0x30/0x30 Jul 17 08:46:58 darkmatter kernel: kthread+0x103/0x140 Jul 17 08:46:58 darkmatter kernel: ? irq_thread_check_affinity+0x80/0x80 Jul 17 08:46:58 darkmatter kernel: ? kthread_park+0x90/0x90 Jul 17 08:46:58 darkmatter kernel: ret_from_fork+0x3a/0x50 Jul 17 08:46:58 darkmatter kernel: bpfilter: Loaded bpfilter_umh pid 1160 Jul 17 08:46:58 darkmatter kernel: bpfilter: read fail -13 Luis
