On Wed, Feb 12, 2025 at 07:48:20PM -0800, Jakub Kicinski wrote: > On Wed, 12 Feb 2025 18:43:28 +0100 Frederic Weisbecker wrote: > > napi_schedule() is expected to be called either: > > > > * From an interrupt, where raised softirqs are handled on IRQ exit > > > > * From a softirq disabled section, where raised softirqs are handled on > > the next call to local_bh_enable(). > > > > * From a softirq handler, where raised softirqs are handled on the next > > round in do_softirq(), or further deferred to a dedicated kthread. > > > > Other bare tasks context may end up ignoring the raised NET_RX vector > > until the next random softirq handling opportunity, which may not > > happen before a while if the CPU goes idle afterwards with the tick > > stopped. > > > > Report inappropriate calling contexts when neither of the three above > > conditions are met. > > Looks like netcons is hitting this warning in netdevsim: > > [ 16.063196][ T219] nsim_start_xmit+0x4e0/0x6f0 [netdevsim] > [ 16.063219][ T219] ? netif_skb_features+0x23e/0xa80 > [ 16.063237][ T219] netpoll_start_xmit+0x3c3/0x670 > [ 16.063258][ T219] __netpoll_send_skb+0x3e9/0x800 > [ 16.063287][ T219] netpoll_send_skb+0x2a/0xa0 > [ 16.063298][ T219] send_ext_msg_udp+0x286/0x350 [netconsole] > [ 16.063325][ T219] write_ext_msg+0x1c6/0x230 [netconsole] > [ 16.063346][ T219] console_emit_next_record+0x20d/0x430 > > https://netdev-3.bots.linux.dev/vmksft-net-drv-dbg/results/990261/7-netcons-basic-sh/stderr > > We gotta fix that first. Thanks Jakub, I understand that it will be fixed by this patchset, right? https://lore.kernel.org/all/20250212-netdevsim-v1-1-20ece94daae8@xxxxxxxxxx/
