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From: Steven Rostedt <rostedt@goodmis.org>
To: Juri Lelli <juri.lelli@redhat.com>
Cc: tglx@linutronix.de, bigeasy@linutronix.de,
	linux-rt-users@vger.kernel.org, linux-kernel@vger.kernel.org,
	williams@redhat.com
Subject: Re: [RT PATCH v2] net/xfrm/xfrm_ipcomp: Protect scratch buffer with local_lock
Date: Mon, 19 Aug 2019 15:57:21 -0400
Message-ID: <20190819155721.05c878f8@oasis.local.home> (raw)
In-Reply-To: <20190819122731.6600-1-juri.lelli@redhat.com>

On Mon, 19 Aug 2019 14:27:31 +0200
Juri Lelli <juri.lelli@redhat.com> wrote:

> The following BUG has been reported while running ipsec tests.

Thanks!

I'm still in the process of backporting patches to fix some bugs that
showed up with the latest merge of upstream stable. I'll add this to
the queue to add.

-- Steve


> 
>  BUG: scheduling while atomic: irq/78-eno3-rx-/12023/0x00000002
>  Modules linked in: ipcomp xfrm_ipcomp ...
>  Preemption disabled at:
>  [<ffffffffc0b29730>] ipcomp_input+0xd0/0x9a0 [xfrm_ipcomp]
>  CPU: 1 PID: 12023 Comm: irq/78-eno3-rx- Kdump: loaded Not tainted [...] #1
>  Hardware name: [...]
>  Call Trace:
>   dump_stack+0x5c/0x80
>   ? ipcomp_input+0xd0/0x9a0 [xfrm_ipcomp]
>   __schedule_bug.cold.81+0x44/0x51
>   __schedule+0x5bf/0x6a0
>   schedule+0x39/0xd0
>   rt_spin_lock_slowlock_locked+0x10e/0x2b0
>   rt_spin_lock_slowlock+0x50/0x80
>   get_page_from_freelist+0x609/0x1560
>   ? zlib_updatewindow+0x5a/0xd0
>   __alloc_pages_nodemask+0xd9/0x280
>   ipcomp_input+0x299/0x9a0 [xfrm_ipcomp]
>   xfrm_input+0x5e3/0x960
>   xfrm4_ipcomp_rcv+0x34/0x50
>   ip_local_deliver_finish+0x22d/0x250
>   ip_local_deliver+0x6d/0x110
>   ? ip_rcv_finish+0xac/0x480
>   ip_rcv+0x28e/0x3f9
>   ? packet_rcv+0x43/0x4c0
>   __netif_receive_skb_core+0xb7c/0xd10
>   ? inet_gro_receive+0x8e/0x2f0
>   netif_receive_skb_internal+0x4a/0x160
>   napi_gro_receive+0xee/0x110
>   tg3_rx+0x2a8/0x810 [tg3]
>   tg3_poll_work+0x3b3/0x830 [tg3]
>   tg3_poll_msix+0x3b/0x170 [tg3]
>   net_rx_action+0x1ff/0x470
>   ? __switch_to_asm+0x41/0x70
>   do_current_softirqs+0x223/0x3e0
>   ? irq_thread_check_affinity+0x20/0x20
>   __local_bh_enable+0x51/0x60
>   irq_forced_thread_fn+0x5e/0x80
>   ? irq_finalize_oneshot.part.45+0xf0/0xf0
>   irq_thread+0x13d/0x1a0
>   ? wake_threads_waitq+0x30/0x30
>   kthread+0x112/0x130
>   ? kthread_create_worker_on_cpu+0x70/0x70
>   ret_from_fork+0x35/0x40
> 



  reply index

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-19 12:27 Juri Lelli
2019-08-19 19:57 ` Steven Rostedt [this message]
2019-08-20  6:43   ` Juri Lelli
2019-08-20  5:35 ` kbuild test robot
2019-08-20  6:42   ` Juri Lelli
2019-08-21  1:43     ` Li, Philip
2019-08-21  6:44       ` Juri Lelli
2019-08-21  7:00         ` bigeasy
2019-08-20  8:28 ` Sebastian Andrzej Siewior

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