lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Date:   Fri, 17 Jan 2020 02:20:30 -0800 (PST)
From:   David Miller <>
Subject: Re: [PATCH net] net: hns: fix soft lockup when there is not enough

From: Yonglong Liu <>
Date: Thu, 16 Jan 2020 15:41:17 +0800

> When there is not enough memory and napi_alloc_skb() return NULL,
> the HNS driver will print error message, and than try again, if
> the memory is not enough for a while, huge error message and the
> retry operation will cause soft lockup.
> When napi_alloc_skb() return NULL because of no memory, we can
> get a warn_alloc() call trace, so this patch deletes the error
> message. We already use polling mode to handle irq, but the
> retry operation will render the polling weight inactive, this
> patch just return budget when the rx is not completed to avoid
> dead loop.
> Fixes: 36eedfde1a36 ("net: hns: Optimize hns_nic_common_poll for better performance")
> Fixes: b5996f11ea54 ("net: add Hisilicon Network Subsystem basic ethernet support")
> Signed-off-by: Yonglong Liu <>

Applied and queued up for -stable.

Powered by blists - more mailing lists