linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Naresh Kamboju <naresh.kamboju@linaro.org>
To: kasan-dev <kasan-dev@googlegroups.com>,
	open list <linux-kernel@vger.kernel.org>,
	Netdev <netdev@vger.kernel.org>,
	linux-nfs@vger.kernel.org, lkft-triage@lists.linaro.org,
	rcu@vger.kernel.org
Cc: Jakub Kicinski <kuba@kernel.org>,
	"David S. Miller" <davem@davemloft.net>,
	chuck.lever@oracle.com, bfields@fieldses.org,
	anna.schumaker@netapp.com, trond.myklebust@hammerspace.com,
	"Paul E. McKenney" <paulmck@kernel.org>,
	Marco Elver <elver@google.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Ingo Molnar <mingo@kernel.org>
Subject: BUG: KCSAN: data-race in __rpc_do_wake_up_task_on_wq / xprt_request_transmit
Date: Sat, 5 Dec 2020 00:05:02 +0530	[thread overview]
Message-ID: <CA+G9fYvhvZtDYVBo4kj9OkKY_vVFSa6EbWz99iCmRPojExRieA@mail.gmail.com> (raw)

LKFT started testing KCSAN enabled kernel from the linux next tree.
Here we have found BUG: KCSAN: data-race in
__rpc_do_wake_up_task_on_wq / xprt_request_transmit

This report is from an x86_64 machine clang-11 linux next 20201201.
Since we are running for the first time we do not call this regression.

[   17.316725] BUG: KCSAN: data-race in __rpc_do_wake_up_task_on_wq /
xprt_request_transmit
[   17.324821]
[   17.326322] write to 0xffff90a801de6a9c of 2 bytes by task 142 on cpu 1:
[   17.333022]  __rpc_do_wake_up_task_on_wq+0x295/0x350
[   17.337987]  rpc_wake_up_queued_task+0x99/0xc0
[   17.342432]  xprt_complete_rqst+0xef/0x100
[   17.346533]  xs_read_stream+0x9c6/0xc40
[   17.350370]  xs_stream_data_receive+0x60/0x130
[   17.354819]  xs_stream_data_receive_workfn+0x5c/0x90
[   17.359784]  process_one_work+0x4a6/0x830
[   17.363795]  worker_thread+0x5f7/0xaa0
[   17.367548]  kthread+0x20b/0x220
[   17.370780]  ret_from_fork+0x22/0x30
[   17.374359]
[   17.375858] read to 0xffff90a801de6a9c of 2 bytes by task 249 on cpu 3:
[   17.382473]  xprt_request_transmit+0x389/0x7a0
[   17.386919]  xprt_transmit+0xfe/0x250
[   17.390583]  call_transmit+0x10d/0x120
[   17.394337]  __rpc_execute+0x12d/0x700
[   17.398089]  rpc_async_schedule+0x59/0x90
[   17.402100]  process_one_work+0x4a6/0x830
[   17.406114]  worker_thread+0x5f7/0xaa0
[   17.409868]  kthread+0x20b/0x220
[   17.413099]  ret_from_fork+0x22/0x30
[   17.416675]
[   17.418167] Reported by Kernel Concurrency Sanitizer on:
[   17.423475] CPU: 3 PID: 249 Comm: kworker/u8:1 Not tainted
5.10.0-rc6-next-20201201 #2
[   17.431385] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS
2.2 05/23/2018
[   17.438778] Workqueue: rpciod rpc_async_schedule

metadata:
    git_repo: https://gitlab.com/aroxell/lkft-linux-next
    target_arch: x86
    toolchain: clang-11
    git_describe: next-20201201
    download_url: https://builds.tuxbuild.com/1l8eiWgGMi6W4aDobjAAlOleFVl/

Full test log link,
https://lkft.validation.linaro.org/scheduler/job/2002643#L1005

-- 
Linaro LKFT
https://lkft.linaro.org

                 reply	other threads:[~2020-12-04 18:36 UTC|newest]

Thread overview: [no followups] expand[flat|nested]  mbox.gz  Atom feed

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=CA+G9fYvhvZtDYVBo4kj9OkKY_vVFSa6EbWz99iCmRPojExRieA@mail.gmail.com \
    --to=naresh.kamboju@linaro.org \
    --cc=anna.schumaker@netapp.com \
    --cc=bfields@fieldses.org \
    --cc=chuck.lever@oracle.com \
    --cc=davem@davemloft.net \
    --cc=elver@google.com \
    --cc=kasan-dev@googlegroups.com \
    --cc=kuba@kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-nfs@vger.kernel.org \
    --cc=lkft-triage@lists.linaro.org \
    --cc=mingo@kernel.org \
    --cc=netdev@vger.kernel.org \
    --cc=paulmck@kernel.org \
    --cc=peterz@infradead.org \
    --cc=rcu@vger.kernel.org \
    --cc=trond.myklebust@hammerspace.com \
    --subject='Re: BUG: KCSAN: data-race in __rpc_do_wake_up_task_on_wq / xprt_request_transmit' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).