From: Viresh Kumar <viresh.kumar@linaro.org>
To: Greg KH <gregkh@linuxfoundation.org>
Cc: jslaby@suse.cz,
Lists linaro-kernel <linaro-kernel@lists.linaro.org>,
Patch Tracking <patches@linaro.org>,
linux-serial@vger.kernel.org,
Bryan Huntsman <bryanh@codeaurora.org>,
Daniel Walker <dwalker@fifo99.com>,
David Brown <davidb@codeaurora.org>,
Stephen Warren <swarren@wwwdotorg.org>,
Tobias Klauser <tklauser@distanz.ch>,
Tony Prisk <linux@prisktech.co.nz>
Subject: Re: [PATCH 00/25] tty: serial: drop uart_port->lock before calling
Date: Mon, 19 Aug 2013 16:13:04 +0530 [thread overview]
Message-ID: <CAKohponE-FY132W8zcLn-yAP+wLQjJ4xH9_HPeyV5K1VRdjksw@mail.gmail.com> (raw)
In-Reply-To: <CAKohpomFJprUfTOXrPpkp0LYgy_9WJBSHuRC49dJ7_X1=untUg@mail.gmail.com>
On 16 August 2013 23:14, Viresh Kumar <viresh.kumar@linaro.org> wrote:
> On 16 August 2013 17:57, Greg KH <gregkh@linuxfoundation.org> wrote:
>> Lots of tty and serial changes have happened since -rc5 in linux-next,
>> can you please rebase, and test, these against that tree and resend them
>> if they are still needed?
>
> I have rebased them over latest linux-next and they applied cleanly..
> Haven't tested it though.. Will try that next week.
I initially thought that the problem only occurs with a merge to RT
kernel otherwise this would have happened to lots of people..
But when I tried latest linux-next/master (as of today), without
RT patch I was able to reproduce the issue on Samsung's Arndale
board.
[ 129.179314] [<c0014d58>] (unwind_backtrace+0x0/0xf8) from
[<c0011908>] (show_stack+0x10/0x14)
[ 129.187676] [<c0011908>] (show_stack+0x10/0x14) from [<c035da34>]
(dump_stack+0x6c/0xac)
[ 129.195619] [<c035da34>] (dump_stack+0x6c/0xac) from [<c01b59ac>]
(do_raw_spin_unlock+0xc4/0xd8)
[ 129.204247] [<c01b59ac>] (do_raw_spin_unlock+0xc4/0xd8) from
[<c03627e4>] (_raw_spin_unlock_irqrestore+0xc/0)
[ 129.214241] [<c03627e4>] (_raw_spin_unlock_irqrestore+0xc/0x38)
from [<c020a1a8>] (s3c24xx_serial_rx_chars+0)
[ 129.224832] [<c020a1a8>] (s3c24xx_serial_rx_chars+0x12c/0x260) from
[<c020aae8>] (s3c64xx_serial_handle_irq+)
[ 129.235336] [<c020aae8>] (s3c64xx_serial_handle_irq+0x48/0x60) from
[<c006aaa0>] (handle_irq_event_percpu+0x)
[ 129.245753] [<c006aaa0>] (handle_irq_event_percpu+0x50/0x194) from
[<c006ac20>] (handle_irq_event+0x3c/0x5c)
[ 129.255407] [<c006ac20>] (handle_irq_event+0x3c/0x5c) from
[<c006d864>] (handle_fasteoi_irq+0x80/0x13c)
[ 129.264636] [<c006d864>] (handle_fasteoi_irq+0x80/0x13c) from
[<c006a4a4>] (generic_handle_irq+0x20/0x30)
[ 129.274030] [<c006a4a4>] (generic_handle_irq+0x20/0x30) from
[<c000f454>] (handle_IRQ+0x38/0x94)
[ 129.282655] [<c000f454>] (handle_IRQ+0x38/0x94) from [<c0008538>]
(gic_handle_irq+0x34/0x68)
[ 129.290938] [<c0008538>] (gic_handle_irq+0x34/0x68) from
[<c00123c0>] (__irq_svc+0x40/0x70)
[ 129.299134] Exception stack(0xc04cdf70 to 0xc04cdfb8)
[ 129.304084] df60: 00000000
00000000 0000166e 00000000
[ 129.312117] df80: c04cc000 c050278f c050278f 00000001 c04d444c
410fc0f4 c03649b0 00000000
[ 129.320146] dfa0: 00000001 c04cdfb8 c000f758 c000f75c 60070013 ffffffff
[ 129.326639] [<c00123c0>] (__irq_svc+0x40/0x70) from [<c000f75c>]
(arch_cpu_idle+0x28/0x30)
[ 129.334756] [<c000f75c>] (arch_cpu_idle+0x28/0x30) from
[<c0054888>] (cpu_startup_entry+0x5c/0x148)
[ 129.343644] [<c0054888>] (cpu_startup_entry+0x5c/0x148) from
[<c0497aa4>] (start_kernel+0x334/0x38c)
[ 133.343767] BUG: spinlock lockup suspected on CPU#0, kworker/0:1/360
[ 133.348574] lock: s3c24xx_serial_ports+0x1d8/0x370, .magic:
dead4ead, .owner: <none>/-1, .owner_cpu: -1
[ 133.357885] CPU: 0 PID: 360 Comm: kworker/0:1 Not tainted
3.11.0-rc6-next-20130819-00003-g75485f1 #2
[ 133.366858] Workqueue: events flush_to_ldisc
[ 133.371034] [<c0014d58>] (unwind_backtrace+0x0/0xf8) from
[<c0011908>] (show_stack+0x10/0x14)
[ 133.379413] [<c0011908>] (show_stack+0x10/0x14) from [<c035da34>]
(dump_stack+0x6c/0xac)
[ 133.387355] [<c035da34>] (dump_stack+0x6c/0xac) from [<c01b581c>]
(do_raw_spin_lock+0x100/0x17c)
[ 133.395982] [<c01b581c>] (do_raw_spin_lock+0x100/0x17c) from
[<c03628a0>] (_raw_spin_lock_irqsave+0x20/0x28)
[ 133.405635] [<c03628a0>] (_raw_spin_lock_irqsave+0x20/0x28) from
[<c0203224>] (uart_start+0x18/0x34)
[ 133.414602] [<c0203224>] (uart_start+0x18/0x34) from [<c01ef890>]
(__receive_buf+0x4b4/0x738)
[ 133.422973] [<c01ef890>] (__receive_buf+0x4b4/0x738) from
[<c01efb44>] (n_tty_receive_buf2+0x30/0x98)
[ 133.432026] [<c01efb44>] (n_tty_receive_buf2+0x30/0x98) from
[<c01f2ba8>] (flush_to_ldisc+0xec/0x138)
[ 133.441081] [<c01f2ba8>] (flush_to_ldisc+0xec/0x138) from
[<c0031af0>] (process_one_work+0xfc/0x348)
[ 133.450048] [<c0031af0>] (process_one_work+0xfc/0x348) from
[<c0032138>] (worker_thread+0x138/0x37c)
[ 133.459014] [<c0032138>] (worker_thread+0x138/0x37c) from
[<c0037a7c>] (kthread+0xa4/0xb0)
[ 133.467128] [<c0037a7c>] (kthread+0xa4/0xb0) from [<c000e5f8>]
(ret_from_fork+0x14/0x3c)
And so yes they are required over latest linux-next as well..
I will resend V2 soon. Thanks..
next prev parent reply other threads:[~2013-08-19 10:43 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-16 11:43 [PATCH 00/25] tty: serial: drop uart_port->lock before calling Viresh Kumar
2013-08-16 11:43 ` [PATCH 01/25] tty: serial: altera_jtag: drop uart_port->lock before calling tty_flip_buffer_push() Viresh Kumar
2013-08-16 11:43 ` [PATCH 02/25] tty: serial: altera: " Viresh Kumar
2013-08-16 11:43 ` [PATCH 03/25] tty: serial: apbuart: " Viresh Kumar
2013-08-16 11:43 ` [PATCH 04/25] tty: serial: ar933x: " Viresh Kumar
2013-08-16 11:43 ` [PATCH 05/25] tty: serial: arc: " Viresh Kumar
2013-08-16 11:43 ` [PATCH 06/25] tty: serial: bcm63xx: " Viresh Kumar
2013-08-16 11:43 ` [PATCH 07/25] tty: serial: bfin_sport: " Viresh Kumar
2013-08-16 11:43 ` [PATCH 08/25] tty: serial: efm32: " Viresh Kumar
2013-08-16 11:43 ` [PATCH 09/25] tty: serial: icom: " Viresh Kumar
2013-08-16 11:43 ` [PATCH 10/25] tty: serial: lpc32xx_hs: don't call tty_flip_buffer_push() twice Viresh Kumar
2013-08-16 11:43 ` [PATCH 11/25] tty: serial: lpc32xx_hs: drop uart_port->lock before calling tty_flip_buffer_push() Viresh Kumar
2013-08-16 11:43 ` [PATCH 12/25] tty: serial: m32r_sio: " Viresh Kumar
2013-08-16 11:43 ` [PATCH 13/25] tty: serial: mcf: " Viresh Kumar
2013-08-16 11:43 ` [PATCH 14/25] tty: serial: mfd: " Viresh Kumar
2013-08-16 11:43 ` [PATCH 15/25] tty: serial: mpsc: " Viresh Kumar
2013-08-16 11:43 ` [PATCH 16/25] tty: serial: msm: " Viresh Kumar
2013-08-16 11:43 ` [PATCH 17/25] tty: serial: netx: " Viresh Kumar
2013-08-16 11:43 ` [PATCH 18/25] tty: serial: nwpserial: " Viresh Kumar
2013-08-16 11:43 ` [PATCH 19/25] tty: serial: pnx8xxx: " Viresh Kumar
2013-08-16 11:43 ` [PATCH 20/25] tty: serial: rp2: " Viresh Kumar
2013-08-16 11:43 ` [PATCH 21/25] tty: serial: sa1100: " Viresh Kumar
2013-08-16 11:43 ` [PATCH 22/25] tty: serial: samsung: " Viresh Kumar
2013-08-16 11:43 ` [PATCH 23/25] tty: serial: tegra: " Viresh Kumar
2013-08-16 11:43 ` [PATCH 24/25] tty: serial: sirfsoc: " Viresh Kumar
2013-08-16 11:43 ` [PATCH 25/25] tty: serial: vt8500: " Viresh Kumar
2013-08-16 12:06 ` [PATCH 00/25] tty: serial: drop uart_port->lock before calling Peter Hurley
2013-08-16 16:59 ` Viresh Kumar
2013-08-16 12:27 ` Greg KH
2013-08-16 17:44 ` Viresh Kumar
2013-08-19 10:43 ` Viresh Kumar [this message]
2013-08-19 13:15 ` Peter Hurley
2013-08-19 14:37 ` Viresh Kumar
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