netdev - Re: [PATCH v2 net] net: stmmac: Use readl_poll_timeout

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Date:   Wed, 20 Apr 2022 10:20:10 +0000
From:   patchwork-bot+netdevbpf@...nel.org
To:     Kevin Hao <haokexin@...il.com>
Cc:     netdev@...r.kernel.org, peppe.cavallaro@...com,
        alexandre.torgue@...s.st.com, joabreu@...opsys.com,
        davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
        mcoquelin.stm32@...il.com, zhengdejin5@...il.com,
        linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2 net] net: stmmac: Use readl_poll_timeout_atomic() in atomic
 state

Hello:

This patch was applied to netdev/net.git (master)
by David S. Miller <davem@...emloft.net>:

On Tue, 19 Apr 2022 16:42:26 +0800 you wrote:
> The init_systime() may be invoked in atomic state. We have observed the
> following call trace when running "phc_ctl /dev/ptp0 set" on a Intel
> Agilex board.
>   BUG: sleeping function called from invalid context at drivers/net/ethernet/stmicro/stmmac/stmmac_hwtstamp.c:74
>   in_atomic(): 1, irqs_disabled(): 128, non_block: 0, pid: 381, name: phc_ctl
>   preempt_count: 1, expected: 0
>   RCU nest depth: 0, expected: 0
>   Preemption disabled at:
>   [<ffff80000892ef78>] stmmac_set_time+0x34/0x8c
>   CPU: 2 PID: 381 Comm: phc_ctl Not tainted 5.18.0-rc2-next-20220414-yocto-standard+ #567
>   Hardware name: SoCFPGA Agilex SoCDK (DT)
>   Call trace:
>    dump_backtrace.part.0+0xc4/0xd0
>    show_stack+0x24/0x40
>    dump_stack_lvl+0x7c/0xa0
>    dump_stack+0x18/0x34
>    __might_resched+0x154/0x1c0
>    __might_sleep+0x58/0x90
>    init_systime+0x78/0x120
>    stmmac_set_time+0x64/0x8c
>    ptp_clock_settime+0x60/0x9c
>    pc_clock_settime+0x6c/0xc0
>    __arm64_sys_clock_settime+0x88/0xf0
>    invoke_syscall+0x5c/0x130
>    el0_svc_common.constprop.0+0x4c/0x100
>    do_el0_svc+0x7c/0xa0
>    el0_svc+0x58/0xcc
>    el0t_64_sync_handler+0xa4/0x130
>    el0t_64_sync+0x18c/0x190
> 
> [...]

Here is the summary with links:
  - [v2,net] net: stmmac: Use readl_poll_timeout_atomic() in atomic state
    https://git.kernel.org/netdev/net/c/234901de2bc6

You are awesome, thank you!
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