From: Artem Bityutskiy <dedekind1@gmail.com>
To: saeed bishara <saeed.bishara@gmail.com>
Cc: linux-mtd@lists.infradead.org
Subject: Re: suspend to disk hangs when running from ubifs
Date: Wed, 31 Mar 2010 16:38:56 +0300 [thread overview]
Message-ID: <1270042736.15073.28.camel@localhost> (raw)
In-Reply-To: <c70ff3ad1002230217x1393c41che316e24a47f577ff@mail.gmail.com>
On Tue, 2010-02-23 at 12:17 +0200, saeed bishara wrote:
> Hi,
> I've installed my rootfs on nand flash with ubifs, when trying to
> syspend to disk (swap on sata HDD), the system hangs after saving the
> image, after two minutes I got the message below, if I manually reset
> the system, it succeeds to resume.
> please note that the page offset is 0x80000000.
I guess it is related to the fact that the "ubi_bgt0d" thread is frozen,
and then the reboot notifier is called and this notifier tries to stop
the frozen thread.
Try to comment out thread stopping in the reboot notifier. It is not
needed anyway.
But I think I will remove this UBI reboot notifier, because it does not
solve any problem, and it seems it actually introduces new problems. See
this post:
http://lkml.org/lkml/2010/2/12/114
Thus, if you confirm that commenting out the stuff in the notifier
helps, I'll remove it.
CCing Kevin, the original author of the notifier patch.
>
> INFO: task echo:612 blocked for more than 120 seconds.
> "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> echo D 8045baa8 0 612 609 0x00020000
> [<8045baa8>] (schedule+0x2e0/0x328) from [<8045bcc4>]
> (schedule_timeout+0x1c/0x21c)
> [<8045bcc4>] (schedule_timeout+0x1c/0x21c) from [<8045b6b0>]
> (wait_for_common+0xcc/0x15c)
> [<8045b6b0>] (wait_for_common+0xcc/0x15c) from [<800897e4>]
> (kthread_stop+0x7c/0xec)
> [<800897e4>] (kthread_stop+0x7c/0xec) from [<802d5d88>]
> (ubi_reboot_notifier+0x20/0x34)
> [<802d5d88>] (ubi_reboot_notifier+0x20/0x34) from [<8008de04>]
> (notifier_call_chain+0x2c/0x74)
> [<8008de04>] (notifier_call_chain+0x2c/0x74) from [<8008e10c>]
> (__blocking_notifier_call_chain+0x4c/0x68)
> [<8008e10c>] (__blocking_notifier_call_chain+0x4c/0x68) from
> [<8008e140>] (blocking_notifier_call_chain+0x18/0x24)
> [<8008e140>] (blocking_notifier_call_chain+0x18/0x24) from
> [<80083084>] (kernel_shutdown_prepare+0x20/0x38)
> [<80083084>] (kernel_shutdown_prepare+0x20/0x38) from [<800830ac>]
> (kernel_power_off+0x10/0x44)
> [<800830ac>] (kernel_power_off+0x10/0x44) from [<800a0bac>]
> (hibernate+0x128/0x1a4)
> [<800a0bac>] (hibernate+0x128/0x1a4) from [<8009f54c>] (state_store+0x50/0xc4)
> [<8009f54c>] (state_store+0x50/0xc4) from [<8021d244>]
> (kobj_attr_store+0x1c/0x28)
> [<8021d244>] (kobj_attr_store+0x1c/0x28) from [<801265a0>]
> (sysfs_write_file+0x104/0x13c)
> [<801265a0>] (sysfs_write_file+0x104/0x13c) from [<800e4e0c>]
> (vfs_write+0xb0/0x160)
> [<800e4e0c>] (vfs_write+0xb0/0x160) from [<800e5314>] (sys_write+0x3c/0x6c)
> [<800e5314>] (sys_write+0x3c/0x6c) from [<80035e40>] (ret_fast_syscall+0x0/0x2c)
>
> here are the states of all the tasks:
> SysRq : Show Blocked State
> task PC stack pid father
> init D 8045baa8 0 1 0 0x00020000
> [<8045baa8>] (schedule+0x2e0/0x328) from [<8008ffc0>] (refrigerator+0x9c/0xc8)
> [<8008ffc0>] (refrigerator+0x9c/0xc8) from [<80038750>]
> (do_notify_resume+0x48/0x614)
> [<80038750>] (do_notify_resume+0x48/0x614) from [<80035e8c>]
> (work_pending+0x1c/0x20)
> bdi-default D 8045baa8 0 214 2 0x00000000
> [<8045baa8>] (schedule+0x2e0/0x328) from [<8008ffc0>] (refrigerator+0x9c/0xc8)
> [<8008ffc0>] (refrigerator+0x9c/0xc8) from [<800cfa64>]
> (bdi_forker_task+0x198/0x294)
> [<800cfa64>] (bdi_forker_task+0x198/0x294) from [<80089a78>] (kthread+0x78/0x80)
> [<80089a78>] (kthread+0x78/0x80) from [<80036e0c>] (kernel_thread_exit+0x0/0x8)
> ksuspend_usbd D 8045baa8 0 229 2 0x00000000
> [<8045baa8>] (schedule+0x2e0/0x328) from [<8008ffc0>] (refrigerator+0x9c/0xc8)
> [<8008ffc0>] (refrigerator+0x9c/0xc8) from [<800869bc>]
> (worker_thread+0xcc/0x200)
> [<800869bc>] (worker_thread+0xcc/0x200) from [<80089a78>] (kthread+0x78/0x80)
> [<80089a78>] (kthread+0x78/0x80) from [<80036e0c>] (kernel_thread_exit+0x0/0x8)
> khubd D 8045baa8 0 234 2 0x00000000
> [<8045baa8>] (schedule+0x2e0/0x328) from [<8008ffc0>] (refrigerator+0x9c/0xc8)
> [<8008ffc0>] (refrigerator+0x9c/0xc8) from [<80319a10>] (hub_thread+0xcc4/0xd5c)
> [<80319a10>] (hub_thread+0xcc4/0xd5c) from [<80089a78>] (kthread+0x78/0x80)
> [<80089a78>] (kthread+0x78/0x80) from [<80036e0c>] (kernel_thread_exit+0x0/0x8)
> kswapd0 D 8045baa8 0 274 2 0x00000000
> [<8045baa8>] (schedule+0x2e0/0x328) from [<8008ffc0>] (refrigerator+0x9c/0xc8)
> [<8008ffc0>] (refrigerator+0x9c/0xc8) from [<800c7a74>] (kswapd+0x120/0x4c4)
> [<800c7a74>] (kswapd+0x120/0x4c4) from [<80089a78>] (kthread+0x78/0x80)
> [<80089a78>] (kthread+0x78/0x80) from [<80036e0c>] (kernel_thread_exit+0x0/0x8)
> ubi_bgt0d D 8045baa8 0 484 2 0x00000000
> [<8045baa8>] (schedule+0x2e0/0x328) from [<8008ffc0>] (refrigerator+0x9c/0xc8)
> [<8008ffc0>] (refrigerator+0x9c/0xc8) from [<802dc64c>] (ubi_thread+0x68/0x138)
> [<802dc64c>] (ubi_thread+0x68/0x138) from [<80089a78>] (kthread+0x78/0x80)
> [<80089a78>] (kthread+0x78/0x80) from [<80036e0c>] (kernel_thread_exit+0x0/0x8)
> usbhid_resume D 8045baa8 0 569 2 0x00000000
> [<8045baa8>] (schedule+0x2e0/0x328) from [<8008ffc0>] (refrigerator+0x9c/0xc8)
> [<8008ffc0>] (refrigerator+0x9c/0xc8) from [<800869bc>]
> (worker_thread+0xcc/0x200)
> [<800869bc>] (worker_thread+0xcc/0x200) from [<80089a78>] (kthread+0x78/0x80)
> [<80089a78>] (kthread+0x78/0x80) from [<80036e0c>] (kernel_thread_exit+0x0/0x8)
> ubifs_bgt0_0 D 8045baa8 0 601 2 0x00000000
> [<8045baa8>] (schedule+0x2e0/0x328) from [<8008ffc0>] (refrigerator+0x9c/0xc8)
> [<8008ffc0>] (refrigerator+0x9c/0xc8) from [<801d3118>]
> (ubifs_bg_thread+0x58/0x108)
> [<801d3118>] (ubifs_bg_thread+0x58/0x108) from [<80089a78>] (kthread+0x78/0x80)
> [<80089a78>] (kthread+0x78/0x80) from [<80036e0c>] (kernel_thread_exit+0x0/0x8)
> sh D 8045baa8 0 609 1 0x00020000
> [<8045baa8>] (schedule+0x2e0/0x328) from [<8008ffc0>] (refrigerator+0x9c/0xc8)
> [<8008ffc0>] (refrigerator+0x9c/0xc8) from [<80038750>]
> (do_notify_resume+0x48/0x614)
> [<80038750>] (do_notify_resume+0x48/0x614) from [<80035e8c>]
> (work_pending+0x1c/0x20)
> flush-ubifs_0 D 8045baa8 0 610 2 0x00000000
> [<8045baa8>] (schedule+0x2e0/0x328) from [<8008ffc0>] (refrigerator+0x9c/0xc8)
> [<8008ffc0>] (refrigerator+0x9c/0xc8) from [<800ff454>]
> (bdi_writeback_task+0x94/0xbc)
> [<800ff454>] (bdi_writeback_task+0x94/0xbc) from [<800cf6c0>]
> (bdi_start_fn+0x64/0xb8)
> [<800cf6c0>] (bdi_start_fn+0x64/0xb8) from [<80089a78>] (kthread+0x78/0x80)
> [<80089a78>] (kthread+0x78/0x80) from [<80036e0c>] (kernel_thread_exit+0x0/0x8)
> echo D 8045baa8 0 612 609 0x00020000
> [<8045baa8>] (schedule+0x2e0/0x328) from [<8045bcc4>]
> (schedule_timeout+0x1c/0x21c)
> [<8045bcc4>] (schedule_timeout+0x1c/0x21c) from [<8045b6b0>]
> (wait_for_common+0xcc/0x15c)
> [<8045b6b0>] (wait_for_common+0xcc/0x15c) from [<800897e4>]
> (kthread_stop+0x7c/0xec)
> [<800897e4>] (kthread_stop+0x7c/0xec) from [<802d5d88>]
> (ubi_reboot_notifier+0x20/0x34)
> [<802d5d88>] (ubi_reboot_notifier+0x20/0x34) from [<8008de04>]
> (notifier_call_chain+0x2c/0x74)
> [<8008de04>] (notifier_call_chain+0x2c/0x74) from [<8008e10c>]
> (__blocking_notifier_call_chain+0x4c/0x68)
> [<8008e10c>] (__blocking_notifier_call_chain+0x4c/0x68) from
> [<8008e140>] (blocking_notifier_call_chain+0x18/0x24)
> [<8008e140>] (blocking_notifier_call_chain+0x18/0x24) from
> [<80083084>] (kernel_shutdown_prepare+0x20/0x38)
> [<80083084>] (kernel_shutdown_prepare+0x20/0x38) from [<800830ac>]
> (kernel_power_off+0x10/0x44)
> [<800830ac>] (kernel_power_off+0x10/0x44) from [<800a0bac>]
> (hibernate+0x128/0x1a4)
> [<800a0bac>] (hibernate+0x128/0x1a4) from [<8009f54c>] (state_store+0x50/0xc4)
> [<8009f54c>] (state_store+0x50/0xc4) from [<8021d244>]
> (kobj_attr_store+0x1c/0x28)
> [<8021d244>] (kobj_attr_store+0x1c/0x28) from [<801265a0>]
> (sysfs_write_file+0x104/0x13c)
> [<801265a0>] (sysfs_write_file+0x104/0x13c) from [<800e4e0c>]
> (vfs_write+0xb0/0x160)
> [<800e4e0c>] (vfs_write+0xb0/0x160) from [<800e5314>] (sys_write+0x3c/0x6c)
> [<800e5314>] (sys_write+0x3c/0x6c) from [<80035e40>] (ret_fast_syscall+0x0/0x2c)
>
> ______________________________________________________
> Linux MTD discussion mailing list
> http://lists.infradead.org/mailman/listinfo/linux-mtd/
--
Best Regards,
Artem Bityutskiy (Артём Битюцкий)
next prev parent reply other threads:[~2010-03-31 13:41 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-23 10:17 suspend to disk hangs when running from ubifs saeed bishara
2010-03-31 13:38 ` Artem Bityutskiy [this message]
2010-03-31 13:51 ` Artem Bityutskiy
2010-04-12 8:31 ` saeed bishara
2010-04-27 7:47 ` Artem Bityutskiy
2010-05-23 12:04 ` Artem Bityutskiy
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