From: Laura Abbott <labbott@redhat.com>
To: poma <pomidorabelisima@gmail.com>,
Linux Kernel list <linux-kernel@vger.kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Rusty Russell <rusty@rustcorp.com.au>
Cc: linux-media <linux-media@vger.kernel.org>
Subject: Re: WARNING: CPU: 1 PID: 813 at kernel/module.c:291 module_assert_mutex_or_preempt+0x49/0x90()
Date: Fri, 21 Aug 2015 06:53:36 -0700 [thread overview]
Message-ID: <55D72D60.2040500@redhat.com> (raw)
In-Reply-To: <55D6FBB0.5000709@gmail.com>
On 08/21/2015 03:21 AM, poma wrote:
> On 10.08.2015 23:26, poma wrote:
>>
>> ------------[ cut here ]------------
>> WARNING: CPU: 1 PID: 813 at kernel/module.c:291 module_assert_mutex_or_preempt+0x49/0x90()
>> Modules linked in: mxl5007t af9013 ... dvb_usb_af9015(+) ... dvb_usb_v2 dvb_core rc_core ...
>> CPU: 1 PID: 813 Comm: systemd-udevd Not tainted 4.2.0-0.rc6.git0.1.fc24.x86_64+debug #1
>> ...
>> Call Trace:
>> [<ffffffff81868d8e>] dump_stack+0x4c/0x65
>> [<ffffffff810ab406>] warn_slowpath_common+0x86/0xc0
>> [<ffffffffa057d0b0>] ? af9013_read_ucblocks+0x20/0x20 [af9013]
>> [<ffffffffa057d0b0>] ? af9013_read_ucblocks+0x20/0x20 [af9013]
>> [<ffffffff810ab53a>] warn_slowpath_null+0x1a/0x20
>> [<ffffffff81150529>] module_assert_mutex_or_preempt+0x49/0x90
>> [<ffffffff81150822>] __module_address+0x32/0x150
>> [<ffffffffa057d0b0>] ? af9013_read_ucblocks+0x20/0x20 [af9013]
>> [<ffffffffa057d0b0>] ? af9013_read_ucblocks+0x20/0x20 [af9013]
>> [<ffffffff81150956>] __module_text_address+0x16/0x70
>> [<ffffffffa057d0b0>] ? af9013_read_ucblocks+0x20/0x20 [af9013]
>> [<ffffffffa057d0b0>] ? af9013_read_ucblocks+0x20/0x20 [af9013]
>> [<ffffffff81150f19>] symbol_put_addr+0x29/0x40
>> [<ffffffffa04b77ad>] dvb_frontend_detach+0x7d/0x90 [dvb_core]
>> [<ffffffffa04cdfd5>] dvb_usbv2_probe+0xc85/0x11a0 [dvb_usb_v2]
>> [<ffffffffa05607c4>] af9015_probe+0x84/0xf0 [dvb_usb_af9015]
>> [<ffffffff8161c03b>] usb_probe_interface+0x1bb/0x2e0
>> [<ffffffff81579f26>] driver_probe_device+0x1f6/0x450
>> [<ffffffff8157a214>] __driver_attach+0x94/0xa0
>> [<ffffffff8157a180>] ? driver_probe_device+0x450/0x450
>> [<ffffffff815778f3>] bus_for_each_dev+0x73/0xc0
>> [<ffffffff815796fe>] driver_attach+0x1e/0x20
>> [<ffffffff8157922e>] bus_add_driver+0x1ee/0x280
>> [<ffffffff8157b0a0>] driver_register+0x60/0xe0
>> [<ffffffff8161a87d>] usb_register_driver+0xad/0x160
>> [<ffffffffa0567000>] ? 0xffffffffa0567000
>> [<ffffffffa056701e>] af9015_usb_driver_init+0x1e/0x1000 [dvb_usb_af9015]
>> [<ffffffff81002123>] do_one_initcall+0xb3/0x200
>> [<ffffffff8124ac65>] ? kmem_cache_alloc_trace+0x355/0x380
>> [<ffffffff81867c37>] ? do_init_module+0x28/0x1e9
>> [<ffffffff81867c6f>] do_init_module+0x60/0x1e9
>> [<ffffffff81154167>] load_module+0x21f7/0x28d0
>> [<ffffffff8114f600>] ? m_show+0x1b0/0x1b0
>> [<ffffffff81026d79>] ? sched_clock+0x9/0x10
>> [<ffffffff810e6ddc>] ? local_clock+0x1c/0x20
>> [<ffffffff811549b8>] SyS_init_module+0x178/0x1c0
>> [<ffffffff8187282e>] entry_SYSCALL_64_fastpath+0x12/0x76
>> ---[ end trace 31a9dd90d4f559f5 ]---
>>
>>
>> Ref.
>> https://bugzilla.redhat.com/show_bug.cgi?id=1252167
>> https://bugzilla.kernel.org/show_bug.cgi?id=102631
>>
>
> You guys are really something.
>
> First of all, as is evident here, I am the original reporter, not Laura Abbott <labbott@redhat.com>.
> -All- your comments including the final patch on this issue, are just plain wrong.[1]
> This patch only hides the actual problem with this particular device - the dual tuner combination driven by dvb_usb_af9015 & mxl5007t, broken by design since day one.
>
> Read the entire https://bugzilla.redhat.com/show_bug.cgi?id=1252167
> and stop this nonsense.
>
> NACK "module: Fix locking in symbol_put_addr()"
>
> [1] http://www.gossamer-threads.com/lists/linux/kernel/2241154
>
>
Sorry, I've been delayed with conferences and have been avoiding e-mails and bugzilla.
I missed sending out the Tested-by tag.
You are welcome to drop the reported-by if you don't think it is appropriate.
Laura
next prev parent reply other threads:[~2015-08-21 13:53 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-10 21:26 WARNING: CPU: 1 PID: 813 at kernel/module.c:291 module_assert_mutex_or_preempt+0x49/0x90() poma
2015-08-21 10:21 ` poma
2015-08-21 13:53 ` Laura Abbott [this message]
2015-08-24 1:17 ` Rusty Russell
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