Re: [PATCH v2 net] ptr_ring: disable KCSAN warnings

[patchwork-bot+netdevbpf@kernel.org]

Hello:

This patch was applied to netdev/net-next.git (main)
by Jakub Kicinski <kuba@kernel.org>:

On Wed, 25 Mar 2026 13:36:00 -0400 you wrote:
> Eric Dumazet reported KCSAN warnings:
> 
> BUG: KCSAN: data-race in pfifo_fast_dequeue / pfifo_fast_enqueue
> 
> write to 0xffff88811d5ccc00 of 8 bytes by interrupt on cpu 0:
> __ptr_ring_zero_tail include/linux/ptr_ring.h:259 [inline]
> __ptr_ring_discard_one include/linux/ptr_ring.h:291 [inline]
> __ptr_ring_consume include/linux/ptr_ring.h:311 [inline]
> __skb_array_consume include/linux/skb_array.h:98 [inline]
> pfifo_fast_dequeue+0x770/0x8f0 net/sched/sch_generic.c:770
> dequeue_skb net/sched/sch_generic.c:297 [inline]
> qdisc_restart net/sched/sch_generic.c:402 [inline]
> __qdisc_run+0x189/0xc80 net/sched/sch_generic.c:420
> qdisc_run include/net/pkt_sched.h:120 [inline]
> net_tx_action+0x379/0x590 net/core/dev.c:5793
> handle_softirqs+0xb9/0x280 kernel/softirq.c:622
> do_softirq+0x45/0x60 kernel/softirq.c:523
> __local_bh_enable_ip+0x70/0x80 kernel/softirq.c:450
> local_bh_enable include/linux/bottom_half.h:33 [inline]
> bpf_test_run+0x2db/0x620 net/bpf/test_run.c:426
> bpf_prog_test_run_skb+0x9a4/0xef0 net/bpf/test_run.c:1159
> bpf_prog_test_run+0x204/0x340 kernel/bpf/syscall.c:4721
> __sys_bpf+0x52e/0x7e0 kernel/bpf/syscall.c:6246
> __do_sys_bpf kernel/bpf/syscall.c:6341 [inline]
> __se_sys_bpf kernel/bpf/syscall.c:6339 [inline]
> __x64_sys_bpf+0x41/0x50 kernel/bpf/syscall.c:6339
> x64_sys_call+0x10cb/0x3020 arch/x86/include/generated/asm/syscalls_64.h:322
> do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
> do_syscall_64+0x12c/0x370 arch/x86/entry/syscall_64.c:94
> entry_SYSCALL_64_after_hwframe+0x77/0x7f
> 
> [...]

Here is the summary with links:
  - [v2,net] ptr_ring: disable KCSAN warnings
    https://git.kernel.org/netdev/net-next/c/d748047af135

You are awesome, thank you!
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