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linux/drivers/net/netdevsim
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Jakub Kicinski a8ff2e362d net: drv: netdevsim: don't napi_complete() from netpoll 
[ Upstream commit 1264971017 ]

netdevsim supports netpoll. Make sure we don't call napi_complete()
from it, since it may not be scheduled. Breno reports hitting a
warning in napi_complete_done():

WARNING: CPU: 14 PID: 104 at net/core/dev.c:6592 napi_complete_done+0x2cc/0x560
  __napi_poll+0x2d8/0x3a0
  handle_softirqs+0x1fe/0x710

This is presumably after netpoll stole the SCHED bit prematurely.

Reported-by: Breno Leitao <leitao@debian.org>
Fixes: 3762ec05a9 ("netdevsim: add NAPI support")
Tested-by: Breno Leitao <leitao@debian.org>
Link: https://patch.msgid.link/20250611174643.2769263-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-06-19 15:32:31 +02:00
..
bpf.c netdevsim: Don't accept device bound programs 2023-11-23 13:04:04 -08:00
bus.c netdevsim: allow two netdevsim ports to be connected 2024-03-01 10:43:10 +00:00
dev.c netdevsim: use cond_resched() in nsim_dev_trap_report_work() 2024-10-15 09:58:43 -07:00
ethtool.c net: Add struct kernel_ethtool_ts_info 2024-07-15 08:02:26 -07:00
fib.c netdevsim: Add trailing zero to terminate the string in nsim_nexthop_bucket_activity_write() 2024-10-29 11:43:01 -07:00
health.c netdevsim: prevent bad user input in nsim_dev_health_break_write() 2024-12-27 14:02:02 +01:00
hwstats.c netdevsim: Fix hwstats debugfs file permissions 2022-09-19 14:40:38 -07:00
ipsec.c netdevsim: print human readable IP address 2025-02-21 14:01:45 +01:00
macsec.c net: macsec: move sci_to_cpu to macsec header 2023-12-27 13:08:09 +00:00
Makefile netdevsim: add dummy macsec offload 2023-07-14 09:16:53 +01:00
netdev.c net: drv: netdevsim: don't napi_complete() from netpoll 2025-06-19 15:32:31 +02:00
netdevsim.h net: netdevsim: try to close UDP port harness races 2025-02-08 09:58:05 +01:00
psample.c netdevsim: Only use sampling truncation length when valid 2021-04-22 13:23:56 -07:00
udp_tunnels.c net: netdevsim: try to close UDP port harness races 2025-02-08 09:58:05 +01:00