From mboxrd@z Thu Jan 1 00:00:00 1970 From: Woody Suwalski Subject: Re: CIFS mount: 3.2.0-rc3 suspend crash Date: Thu, 01 Dec 2011 18:40:39 -0500 Message-ID: <4ED81077.2080305@gmail.com> References: <4ED56C12.1040708@gmail.com> <4ED5C047.6040500@linux.vnet.ibm.com> <20111130062502.68d9db59@tlielax.poochiereds.net> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: "Srivatsa S. Bhat" , LKML , "Rafael J. Wysocki" , Linux PM mailing list , Tejun Heo , Belisko Marek , linux-cifs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Jeff Layton Return-path: In-Reply-To: <20111130062502.68d9db59-9yPaYZwiELC+kQycOl6kW4xkIHaj4LzF@public.gmane.org> Sender: linux-cifs-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-ID: Jeff Layton wrote: > On Wed, 30 Nov 2011 11:03:59 +0530 > "Srivatsa S. Bhat" wrote: > >> Adding linux-pm, Jeff Layton and others to CC. >> >> Regards, >> Srivatsa S. Bhat >> >> On 11/30/2011 05:04 AM, Woody Suwalski wrote: >> >>> With CIFS mount present, suspend2ram seems to be failing on 3.2.0-rc3. >>> It may be similar to recent NFS suspend issues? >>> >>> I have done couple of suspends, then did mount.cifs (at 555 seconds), >>> and then tried suspend again. The problem is easy to duplicate. >>> >>> The hardware is a netbook Asus EeePC. >>> I guess will find out if: >>> - cifs for real 3.2 fixes the problem >>> - NFS fix for -rc4 work for CIFS as well... >>> >>> Thanks, Woody >>> >>> >>> [ 153.974532] uhci_hcd 0000:00:1d.1: PCI INT B disabled >>> [ 153.974578] uhci_hcd 0000:00:1d.0: PCI INT A disabled >>> [ 153.975774] i915 0000:00:02.0: PCI INT A disabled >>> [ 153.977210] ACPI handle has no context! >>> [ 153.977302] atl2 0000:03:00.0: PCI INT A disabled >>> [ 153.977316] ACPI handle has no context! >>> [ 154.277181] snd_hda_intel 0000:00:1b.0: PCI INT A disabled >>> [ 154.288119] PM: suspend of devices complete after 414.210 msecs >>> [ 154.299212] ehci_hcd 0000:00:1d.7: PME# enabled >>> [ 154.299257] ehci_hcd 0000:00:1d.7: wake-up capability enabled by ACPI >>> [ 154.310114] uhci_hcd 0000:00:1d.3: wake-up capability enabled by ACPI >>> [ 154.310178] uhci_hcd 0000:00:1d.2: wake-up capability enabled by ACPI >>> [ 154.310235] uhci_hcd 0000:00:1d.1: wake-up capability enabled by ACPI >>> [ 154.310293] uhci_hcd 0000:00:1d.0: wake-up capability enabled by ACPI >>> [ 154.310418] PM: late suspend of devices complete after 22.283 msecs >>> [ 154.310451] ACPI: Preparing to enter system sleep state S3 >>> [ 154.311671] PM: Saving platform NVS memory >>> [ 154.312968] Disabling non-boot CPUs ... >>> [ 154.312968] ACPI: Low-level resume complete >>> [ 154.312968] PM: Restoring platform NVS memory >>> [ 154.312968] Force enabled HPET at resume >>> [ 154.313366] ACPI: Waking up from system sleep state S3 >>> [ 154.341485] snd_hda_intel 0000:00:1b.0: restoring config space at >>> offset 0x1 (was 0x100006, writing 0x100002) >>> [ 154.341550] pcieport 0000:00:1c.0: restoring config space at offset >>> 0x9 (was 0x1fff1, writing 0x10511041) >>> [ 154.341566] pcieport 0000:00:1c.0: restoring config space at offset >>> 0x8 (was 0xfff0, writing 0x10301020) >>> [ 154.341580] pcieport 0000:00:1c.0: restoring config space at offset >>> 0x7 (was 0xf0, writing 0x3030) >>> [ 154.341603] pcieport 0000:00:1c.0: restoring config space at offset >>> 0x1 (was 0x100104, writing 0x100507) >>> [ 154.341689] pcieport 0000:00:1c.1: restoring config space at offset >>> 0x9 (was 0x1fff1, writing 0x10111001) >>> [ 154.341705] pcieport 0000:00:1c.1: restoring config space at offset >>> 0x7 (was 0xf0, writing 0x2020) >>> [ 154.341728] pcieport 0000:00:1c.1: restoring config space at offset >>> 0x1 (was 0x100106, writing 0x100507) >>> [ 154.341812] pcieport 0000:00:1c.2: restoring config space at offset >>> 0x7 (was 0xf0, writing 0x1010) >>> [ 154.341834] pcieport 0000:00:1c.2: restoring config space at offset >>> 0x1 (was 0x100106, writing 0x100507) >>> [ 154.341920] uhci_hcd 0000:00:1d.0: restoring config space at offset >>> 0x1 (was 0x2800005, writing 0x2800001) >>> [ 154.341958] uhci_hcd 0000:00:1d.0: wake-up capability disabled by ACPI >>> [ 154.342004] uhci_hcd 0000:00:1d.1: restoring config space at offset >>> 0x1 (was 0x2800005, writing 0x2800001) >>> [ 154.342086] uhci_hcd 0000:00:1d.1: wake-up capability disabled by ACPI >>> [ 154.342137] uhci_hcd 0000:00:1d.2: restoring config space at offset >>> 0x1 (was 0x2800005, writing 0x2800001) >>> [ 154.342166] uhci_hcd 0000:00:1d.2: wake-up capability disabled by ACPI >>> [ 154.342211] uhci_hcd 0000:00:1d.3: restoring config space at offset >>> 0x1 (was 0x2800005, writing 0x2800001) >>> [ 154.342239] uhci_hcd 0000:00:1d.3: wake-up capability disabled by ACPI >>> [ 154.342296] ehci_hcd 0000:00:1d.7: restoring config space at offset >>> 0x1 (was 0x2900006, writing 0x2900002) >>> [ 154.342335] ehci_hcd 0000:00:1d.7: wake-up capability disabled by ACPI >>> [ 154.342349] ehci_hcd 0000:00:1d.7: PME# disabled >>> [ 154.342374] pci 0000:00:1e.0: restoring config space at offset 0xf >>> (was 0x60000, writing 0x600ff) >>> [ 154.342606] atl2 0000:03:00.0: restoring config space at offset 0x1 >>> (was 0x100006, writing 0x100406) >>> [ 154.343209] PM: early resume of devices complete after 1.941 msecs >>> [ 154.343454] i915 0000:00:02.0: PCI INT A -> GSI 16 (level, low) -> >>> IRQ 16 >>> [ 154.343470] i915 0000:00:02.0: setting latency timer to 64 >>> [ 154.347098] snd_hda_intel 0000:00:1b.0: PCI INT A -> GSI 16 (level, >>> low) -> IRQ 16 >>> [ 154.347117] snd_hda_intel 0000:00:1b.0: setting latency timer to 64 >>> [ 154.347218] snd_hda_intel 0000:00:1b.0: irq 43 for MSI/MSI-X >>> [ 154.347424] uhci_hcd 0000:00:1d.0: PCI INT A -> GSI 23 (level, low) >>> -> IRQ 23 >>> [ 154.347442] uhci_hcd 0000:00:1d.0: setting latency timer to 64 >>> [ 154.347479] usb usb2: root hub lost power or was reset >>> [ 154.347543] uhci_hcd 0000:00:1d.1: PCI INT B -> GSI 19 (level, low) >>> -> IRQ 19 >>> [ 154.347559] uhci_hcd 0000:00:1d.1: setting latency timer to 64 >>> [ 154.347593] usb usb3: root hub lost power or was reset >>> [ 154.347653] uhci_hcd 0000:00:1d.2: PCI INT C -> GSI 18 (level, low) >>> -> IRQ 18 >>> [ 154.347670] uhci_hcd 0000:00:1d.2: setting latency timer to 64 >>> [ 154.347702] usb usb4: root hub lost power or was reset >>> [ 154.347760] uhci_hcd 0000:00:1d.3: PCI INT D -> GSI 16 (level, low) >>> -> IRQ 16 >>> [ 154.347776] uhci_hcd 0000:00:1d.3: setting latency timer to 64 >>> [ 154.347808] usb usb5: root hub lost power or was reset >>> [ 154.347867] ehci_hcd 0000:00:1d.7: PCI INT A -> GSI 23 (level, low) >>> -> IRQ 23 >>> [ 154.347884] ehci_hcd 0000:00:1d.7: setting latency timer to 64 >>> [ 154.347988] pci 0000:00:1e.0: setting latency timer to 64 >>> [ 154.348125] ata_piix 0000:00:1f.2: PCI INT B -> GSI 19 (level, low) >>> -> IRQ 19 >>> [ 154.348140] ata_piix 0000:00:1f.2: setting latency timer to 64 >>> [ 154.354172] atl2 0000:03:00.0: PCI INT A -> GSI 17 (level, low) -> >>> IRQ 17 >>> [ 154.354192] atl2 0000:03:00.0: setting latency timer to 64 >>> [ 154.354309] atl2 0000:03:00.0: irq 44 for MSI/MSI-X >>> [ 154.354722] sd 1:0:0:0: [sda] Starting disk >>> [ 154.525453] ata2.00: ACPI cmd ef/03:44:00:00:00:a0 (SET FEATURES) >>> filtered out >>> [ 154.525470] ata2.00: ACPI cmd ef/03:0c:00:00:00:a0 (SET FEATURES) >>> filtered out >>> [ 154.531325] ata2.00: configured for UDMA/66 >>> [ 154.591089] usb 1-5: reset high-speed USB device number 2 using ehci_hcd >>> [ 154.805066] PM: resume of devices complete after 461.739 msecs >>> [ 154.805801] Restarting tasks ... done. >>> [ 154.832376] video LNXVIDEO:00: Restoring backlight state >>> [ 155.964388] atl2: eth0 NIC Link is Up<100 Mbps Full Duplex> >>> [ 265.377852] PM: Syncing filesystems ... done. >>> [ 265.427397] Freezing user space processes ... (elapsed 0.01 seconds) >>> done. >>> [ 265.438118] Freezing remaining freezable tasks ... (elapsed 0.01 >>> seconds) done. >>> [ 265.449211] Suspending console(s) (use no_console_suspend to debug) >>> [ 265.451744] sd 1:0:0:0: [sda] Stopping disk >>> [ 265.555169] ata_piix 0000:00:1f.2: PCI INT B disabled >>> [ 265.555281] ehci_hcd 0000:00:1d.7: PCI INT A disabled >>> [ 265.555336] uhci_hcd 0000:00:1d.3: PCI INT D disabled >>> [ 265.555384] uhci_hcd 0000:00:1d.2: PCI INT C disabled >>> [ 265.555432] uhci_hcd 0000:00:1d.1: PCI INT B disabled >>> [ 265.555479] uhci_hcd 0000:00:1d.0: PCI INT A disabled >>> [ 265.555639] snd_hda_intel 0000:00:1b.0: PCI INT A disabled >>> [ 265.556302] i915 0000:00:02.0: PCI INT A disabled >>> [ 265.558207] ACPI handle has no context! >>> [ 265.558302] atl2 0000:03:00.0: PCI INT A disabled >>> [ 265.558316] ACPI handle has no context! >>> [ 265.569117] PM: suspend of devices complete after 119.214 msecs >>> [ 265.580216] ehci_hcd 0000:00:1d.7: PME# enabled >>> [ 265.580261] ehci_hcd 0000:00:1d.7: wake-up capability enabled by ACPI >>> [ 265.591121] uhci_hcd 0000:00:1d.3: wake-up capability enabled by ACPI >>> [ 265.591186] uhci_hcd 0000:00:1d.2: wake-up capability enabled by ACPI >>> [ 265.591244] uhci_hcd 0000:00:1d.1: wake-up capability enabled by ACPI >>> [ 265.591302] uhci_hcd 0000:00:1d.0: wake-up capability enabled by ACPI >>> [ 265.591581] PM: late suspend of devices complete after 22.446 msecs >>> [ 265.591615] ACPI: Preparing to enter system sleep state S3 >>> [ 265.592832] PM: Saving platform NVS memory >>> [ 265.594133] Disabling non-boot CPUs ... >>> [ 265.594133] ACPI: Low-level resume complete >>> [ 265.594133] PM: Restoring platform NVS memory >>> [ 265.594133] Force enabled HPET at resume >>> [ 265.594133] ACPI: Waking up from system sleep state S3 >>> [ 265.621463] snd_hda_intel 0000:00:1b.0: restoring config space at >>> offset 0x1 (was 0x100006, writing 0x100002) >>> [ 265.621528] pcieport 0000:00:1c.0: restoring config space at offset >>> 0x9 (was 0x1fff1, writing 0x10511041) >>> [ 265.621544] pcieport 0000:00:1c.0: restoring config space at offset >>> 0x8 (was 0xfff0, writing 0x10301020) >>> [ 265.621559] pcieport 0000:00:1c.0: restoring config space at offset >>> 0x7 (was 0xf0, writing 0x3030) >>> [ 265.621582] pcieport 0000:00:1c.0: restoring config space at offset >>> 0x1 (was 0x100104, writing 0x100507) >>> [ 265.621667] pcieport 0000:00:1c.1: restoring config space at offset >>> 0x9 (was 0x1fff1, writing 0x10111001) >>> [ 265.621684] pcieport 0000:00:1c.1: restoring config space at offset >>> 0x7 (was 0xf0, writing 0x2020) >>> [ 265.621706] pcieport 0000:00:1c.1: restoring config space at offset >>> 0x1 (was 0x100106, writing 0x100507) >>> [ 265.621791] pcieport 0000:00:1c.2: restoring config space at offset >>> 0x7 (was 0xf0, writing 0x1010) >>> [ 265.621813] pcieport 0000:00:1c.2: restoring config space at offset >>> 0x1 (was 0x100106, writing 0x100507) >>> [ 265.621899] uhci_hcd 0000:00:1d.0: restoring config space at offset >>> 0x1 (was 0x2800005, writing 0x2800001) >>> [ 265.621938] uhci_hcd 0000:00:1d.0: wake-up capability disabled by ACPI >>> [ 265.621983] uhci_hcd 0000:00:1d.1: restoring config space at offset >>> 0x1 (was 0x2800005, writing 0x2800001) >>> [ 265.622057] uhci_hcd 0000:00:1d.1: wake-up capability disabled by ACPI >>> [ 265.622111] uhci_hcd 0000:00:1d.2: restoring config space at offset >>> 0x1 (was 0x2800005, writing 0x2800001) >>> [ 265.622139] uhci_hcd 0000:00:1d.2: wake-up capability disabled by ACPI >>> [ 265.622183] uhci_hcd 0000:00:1d.3: restoring config space at offset >>> 0x1 (was 0x2800005, writing 0x2800001) >>> [ 265.622210] uhci_hcd 0000:00:1d.3: wake-up capability disabled by ACPI >>> [ 265.622267] ehci_hcd 0000:00:1d.7: restoring config space at offset >>> 0x1 (was 0x2900006, writing 0x2900002) >>> [ 265.622305] ehci_hcd 0000:00:1d.7: wake-up capability disabled by ACPI >>> [ 265.622320] ehci_hcd 0000:00:1d.7: PME# disabled >>> [ 265.622344] pci 0000:00:1e.0: restoring config space at offset 0xf >>> (was 0x60000, writing 0x600ff) >>> [ 265.622575] atl2 0000:03:00.0: restoring config space at offset 0x1 >>> (was 0x100006, writing 0x100406) >>> [ 265.623172] PM: early resume of devices complete after 1.925 msecs >>> [ 265.623416] i915 0000:00:02.0: PCI INT A -> GSI 16 (level, low) -> >>> IRQ 16 >>> [ 265.623432] i915 0000:00:02.0: setting latency timer to 64 >>> [ 265.627096] snd_hda_intel 0000:00:1b.0: PCI INT A -> GSI 16 (level, >>> low) -> IRQ 16 >>> [ 265.627115] snd_hda_intel 0000:00:1b.0: setting latency timer to 64 >>> [ 265.627215] snd_hda_intel 0000:00:1b.0: irq 43 for MSI/MSI-X >>> [ 265.627429] uhci_hcd 0000:00:1d.0: PCI INT A -> GSI 23 (level, low) >>> -> IRQ 23 >>> [ 265.627448] uhci_hcd 0000:00:1d.0: setting latency timer to 64 >>> [ 265.627485] usb usb2: root hub lost power or was reset >>> [ 265.627548] uhci_hcd 0000:00:1d.1: PCI INT B -> GSI 19 (level, low) >>> -> IRQ 19 >>> [ 265.627564] uhci_hcd 0000:00:1d.1: setting latency timer to 64 >>> [ 265.627597] usb usb3: root hub lost power or was reset >>> [ 265.627659] uhci_hcd 0000:00:1d.2: PCI INT C -> GSI 18 (level, low) >>> -> IRQ 18 >>> [ 265.627675] uhci_hcd 0000:00:1d.2: setting latency timer to 64 >>> [ 265.627707] usb usb4: root hub lost power or was reset >>> [ 265.627766] uhci_hcd 0000:00:1d.3: PCI INT D -> GSI 16 (level, low) >>> -> IRQ 16 >>> [ 265.627781] uhci_hcd 0000:00:1d.3: setting latency timer to 64 >>> [ 265.627814] usb usb5: root hub lost power or was reset >>> [ 265.627873] ehci_hcd 0000:00:1d.7: PCI INT A -> GSI 23 (level, low) >>> -> IRQ 23 >>> [ 265.627889] ehci_hcd 0000:00:1d.7: setting latency timer to 64 >>> [ 265.627993] pci 0000:00:1e.0: setting latency timer to 64 >>> [ 265.628130] ata_piix 0000:00:1f.2: PCI INT B -> GSI 19 (level, low) >>> -> IRQ 19 >>> [ 265.628145] ata_piix 0000:00:1f.2: setting latency timer to 64 >>> [ 265.634153] atl2 0000:03:00.0: PCI INT A -> GSI 17 (level, low) -> >>> IRQ 17 >>> [ 265.634173] atl2 0000:03:00.0: setting latency timer to 64 >>> [ 265.634290] atl2 0000:03:00.0: irq 44 for MSI/MSI-X >>> [ 265.634712] sd 1:0:0:0: [sda] Starting disk >>> [ 265.796709] ata2.00: ACPI cmd ef/03:44:00:00:00:a0 (SET FEATURES) >>> filtered out >>> [ 265.796726] ata2.00: ACPI cmd ef/03:0c:00:00:00:a0 (SET FEATURES) >>> filtered out >>> [ 265.803326] ata2.00: configured for UDMA/66 >>> [ 265.880091] usb 1-5: reset high-speed USB device number 2 using ehci_hcd >>> [ 266.091960] PM: resume of devices complete after 468.673 msecs >>> [ 266.092731] Restarting tasks ... done. >>> [ 266.112098] video LNXVIDEO:00: Restoring backlight state >>> [ 267.219459] atl2: eth0 NIC Link is Up<100 Mbps Full Duplex> >>> [ 554.912659] FS-Cache: Loaded >>> [ 554.950749] FS-Cache: Netfs 'cifs' registered for caching >>> [ 555.047550] CIFS VFS: default security mechanism requested. The >>> default security mechanism will be upgraded from ntlm to ntlmv2 in >>> kernel release 3.2 >>> [ 2094.090461] PM: Syncing filesystems ... done. >>> [ 2094.155385] Freezing user space processes ... (elapsed 0.01 seconds) >>> done. >>> [ 2094.166113] Freezing remaining freezable tasks ... >>> [ 2114.175108] Freezing of tasks failed after 20.00 seconds (1 tasks >>> refusing to freeze, wq_busy=0): >>> [ 2114.175586] cifsd S ccb50b40 0 2219 2 0x00800000 >>> [ 2114.175611] cc6cc000 00000046 00000000 ccb50b40 cc776b40 cc41d000 >>> cc776780 cc61d960 >>> [ 2114.175635] cc4d81c0 c178ec40 c178ec40 ccb50980 00000000 ccb50980 >>> c1031e88 00000001 >>> [ 2114.175660] c1031f9f c10230f5 c1559ee1 c17a7140 c1031e88 00000001 >>> c1031f9f c10230f5 >>> [ 2114.175684] Call Trace: >>> [ 2114.175710] [] ? get_parent_ip+0x8/0x20 >>> [ 2114.175723] [] ? add_preempt_count+0x5f/0xa0 >>> [ 2114.175747] [] ? default_spin_lock_flags+0x5/0x10 >>> [ 2114.175770] [] ? _raw_spin_lock_irqsave+0x31/0x50 >>> [ 2114.175782] [] ? get_parent_ip+0x8/0x20 >>> [ 2114.175794] [] ? add_preempt_count+0x5f/0xa0 >>> [ 2114.175807] [] ? default_spin_lock_flags+0x5/0x10 >>> [ 2114.175820] [] ? _raw_spin_lock_irqsave+0x31/0x50 >>> [ 2114.175832] [] ? get_parent_ip+0x8/0x20 >>> [ 2114.175846] [] ? schedule_timeout+0x111/0x1d0 >>> [ 2114.175860] [] ? tcp_rcv_established+0x170/0x760 >>> [ 2114.175878] [] ? usleep_range+0x40/0x40 >>> [ 2114.175897] [] ? sk_wait_data+0xa7/0xb0 >>> [ 2114.175920] [] ? abort_exclusive_wait+0x90/0x90 >>> [ 2114.175943] [] ? tcp_recvmsg+0x588/0xb80 >>> [ 2114.175956] [] ? __switch_to+0xea/0x1d0 >>> [ 2114.175976] [] ? native_sched_clock+0x27/0x90 >>> [ 2114.175993] [] ? inet_recvmsg+0x6f/0xb0 >>> [ 2114.176063] [] ? sock_recvmsg+0xe0/0x120 >>> [ 2114.176086] [] ? timerqueue_add+0x58/0xb0 >>> [ 2114.176098] [] ? get_parent_ip+0x8/0x20 >>> [ 2114.176112] [] ? get_parent_ip+0x8/0x20 >>> [ 2114.176123] [] ? sub_preempt_count+0x67/0xa0 >>> [ 2114.176145] [] ? _raw_spin_unlock_irqrestore+0x1b/0x40 >>> [ 2114.176165] [] ? hrtimer_try_to_cancel+0x43/0xa0 >>> [ 2114.176178] [] ? hrtimer_cancel+0x11/0x20 >>> [ 2114.176191] [] ? schedule_hrtimeout_range_clock+0xcc/0x170 >>> [ 2114.176206] [] ? update_rmtp+0x80/0x80 >>> [ 2114.176219] [] ? kernel_recvmsg+0x37/0x50 >>> [ 2114.176268] [] ? cifs_readv_from_socket+0x148/0x2b0 [cifs] >>> [ 2114.176283] [] ? get_parent_ip+0x8/0x20 >>> [ 2114.176309] [] ? cifs_read_from_socket+0x1c/0x20 [cifs] >>> [ 2114.176333] [] ? cifs_demultiplex_thread+0x112/0xc20 [cifs] >>> [ 2114.176348] [] ? get_parent_ip+0x8/0x20 >>> [ 2114.176370] [] ? dequeue_mid+0x60/0x60 [cifs] >>> [ 2114.176391] [] ? kthread+0x69/0x70 >>> [ 2114.176406] [] ? kthread_worker_fn+0x150/0x150 >>> [ 2114.176420] [] ? kernel_thread_helper+0x6/0xd >>> [ 2114.176466] >>> [ 2114.176473] Restarting tasks ... done. >>> [ 2114.201577] video LNXVIDEO:00: Restoring backlight state >>> [ 2114.210975] lxpanel[1452]: segfault at 0 ip b6ead703 sp bfea8924 >>> error 4 in libc-2.13.so[b6e39000+13e000] >>> -- > Thanks for reporting this. Does the following patch fix it? > > -----------------------[snip]------------------------ > > cifs: attempt to freeze while looping on a receive attempt > > In the recent overhaul of the demultiplex thread receive path, we > neglected to ensure that we attempt to freeze on each pass through the > loop. > > Reported-by: Woody Suwalski > Signed-off-by: Jeff Layton > --- > fs/cifs/connect.c | 2 ++ > 1 files changed, 2 insertions(+), 0 deletions(-) > > diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c > index bf82f88..d166e3a 100644 > --- a/fs/cifs/connect.c > +++ b/fs/cifs/connect.c > @@ -441,6 +441,8 @@ cifs_readv_from_socket(struct TCP_Server_Info *server, struct kvec *iov_orig, > smb_msg.msg_controllen = 0; > > for (total_read = 0; to_read; total_read += length, to_read -= length) { > + try_to_freeze(); > + > if (server_unresponsive(server)) { > total_read = -EAGAIN; > break; Jeff, the patch does work (if a right module is insmoded ;-) ) Woody From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755564Ab1LAXkn (ORCPT ); Thu, 1 Dec 2011 18:40:43 -0500 Received: from ironport2-out.teksavvy.com ([206.248.154.183]:20918 "EHLO ironport2-out.teksavvy.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755365Ab1LAXkl (ORCPT ); Thu, 1 Dec 2011 18:40:41 -0500 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AgAFAA8P2E4YNOMa/2dsb2JhbABDmwiPeoEGgXIBAQQBJxEeBhwBEAsLAwoJFg8JAwIBAgEPAhYeBg0BBQICiAOmcodrPYh4iyAEiCiCD4oghUOFF4dW X-IronPort-AV: E=Sophos;i="4.71,281,1320642000"; d="scan'208";a="150453384" Message-ID: <4ED81077.2080305@gmail.com> Date: Thu, 01 Dec 2011 18:40:39 -0500 From: Woody Suwalski User-Agent: Mozilla/5.0 (X11; Linux i686; rv:8.0.1) Gecko/20111121 Firefox/8.0.1 SeaMonkey/2.5 MIME-Version: 1.0 To: Jeff Layton CC: "Srivatsa S. Bhat" , LKML , "Rafael J. Wysocki" , Linux PM mailing list , Tejun Heo , Belisko Marek , linux-cifs@vger.kernel.org Subject: Re: CIFS mount: 3.2.0-rc3 suspend crash References: <4ED56C12.1040708@gmail.com> <4ED5C047.6040500@linux.vnet.ibm.com> <20111130062502.68d9db59@tlielax.poochiereds.net> In-Reply-To: <20111130062502.68d9db59@tlielax.poochiereds.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Jeff Layton wrote: > On Wed, 30 Nov 2011 11:03:59 +0530 > "Srivatsa S. Bhat" wrote: > >> Adding linux-pm, Jeff Layton and others to CC. >> >> Regards, >> Srivatsa S. Bhat >> >> On 11/30/2011 05:04 AM, Woody Suwalski wrote: >> >>> With CIFS mount present, suspend2ram seems to be failing on 3.2.0-rc3. >>> It may be similar to recent NFS suspend issues? >>> >>> I have done couple of suspends, then did mount.cifs (at 555 seconds), >>> and then tried suspend again. The problem is easy to duplicate. >>> >>> The hardware is a netbook Asus EeePC. >>> I guess will find out if: >>> - cifs for real 3.2 fixes the problem >>> - NFS fix for -rc4 work for CIFS as well... >>> >>> Thanks, Woody >>> >>> >>> [ 153.974532] uhci_hcd 0000:00:1d.1: PCI INT B disabled >>> [ 153.974578] uhci_hcd 0000:00:1d.0: PCI INT A disabled >>> [ 153.975774] i915 0000:00:02.0: PCI INT A disabled >>> [ 153.977210] ACPI handle has no context! >>> [ 153.977302] atl2 0000:03:00.0: PCI INT A disabled >>> [ 153.977316] ACPI handle has no context! >>> [ 154.277181] snd_hda_intel 0000:00:1b.0: PCI INT A disabled >>> [ 154.288119] PM: suspend of devices complete after 414.210 msecs >>> [ 154.299212] ehci_hcd 0000:00:1d.7: PME# enabled >>> [ 154.299257] ehci_hcd 0000:00:1d.7: wake-up capability enabled by ACPI >>> [ 154.310114] uhci_hcd 0000:00:1d.3: wake-up capability enabled by ACPI >>> [ 154.310178] uhci_hcd 0000:00:1d.2: wake-up capability enabled by ACPI >>> [ 154.310235] uhci_hcd 0000:00:1d.1: wake-up capability enabled by ACPI >>> [ 154.310293] uhci_hcd 0000:00:1d.0: wake-up capability enabled by ACPI >>> [ 154.310418] PM: late suspend of devices complete after 22.283 msecs >>> [ 154.310451] ACPI: Preparing to enter system sleep state S3 >>> [ 154.311671] PM: Saving platform NVS memory >>> [ 154.312968] Disabling non-boot CPUs ... >>> [ 154.312968] ACPI: Low-level resume complete >>> [ 154.312968] PM: Restoring platform NVS memory >>> [ 154.312968] Force enabled HPET at resume >>> [ 154.313366] ACPI: Waking up from system sleep state S3 >>> [ 154.341485] snd_hda_intel 0000:00:1b.0: restoring config space at >>> offset 0x1 (was 0x100006, writing 0x100002) >>> [ 154.341550] pcieport 0000:00:1c.0: restoring config space at offset >>> 0x9 (was 0x1fff1, writing 0x10511041) >>> [ 154.341566] pcieport 0000:00:1c.0: restoring config space at offset >>> 0x8 (was 0xfff0, writing 0x10301020) >>> [ 154.341580] pcieport 0000:00:1c.0: restoring config space at offset >>> 0x7 (was 0xf0, writing 0x3030) >>> [ 154.341603] pcieport 0000:00:1c.0: restoring config space at offset >>> 0x1 (was 0x100104, writing 0x100507) >>> [ 154.341689] pcieport 0000:00:1c.1: restoring config space at offset >>> 0x9 (was 0x1fff1, writing 0x10111001) >>> [ 154.341705] pcieport 0000:00:1c.1: restoring config space at offset >>> 0x7 (was 0xf0, writing 0x2020) >>> [ 154.341728] pcieport 0000:00:1c.1: restoring config space at offset >>> 0x1 (was 0x100106, writing 0x100507) >>> [ 154.341812] pcieport 0000:00:1c.2: restoring config space at offset >>> 0x7 (was 0xf0, writing 0x1010) >>> [ 154.341834] pcieport 0000:00:1c.2: restoring config space at offset >>> 0x1 (was 0x100106, writing 0x100507) >>> [ 154.341920] uhci_hcd 0000:00:1d.0: restoring config space at offset >>> 0x1 (was 0x2800005, writing 0x2800001) >>> [ 154.341958] uhci_hcd 0000:00:1d.0: wake-up capability disabled by ACPI >>> [ 154.342004] uhci_hcd 0000:00:1d.1: restoring config space at offset >>> 0x1 (was 0x2800005, writing 0x2800001) >>> [ 154.342086] uhci_hcd 0000:00:1d.1: wake-up capability disabled by ACPI >>> [ 154.342137] uhci_hcd 0000:00:1d.2: restoring config space at offset >>> 0x1 (was 0x2800005, writing 0x2800001) >>> [ 154.342166] uhci_hcd 0000:00:1d.2: wake-up capability disabled by ACPI >>> [ 154.342211] uhci_hcd 0000:00:1d.3: restoring config space at offset >>> 0x1 (was 0x2800005, writing 0x2800001) >>> [ 154.342239] uhci_hcd 0000:00:1d.3: wake-up capability disabled by ACPI >>> [ 154.342296] ehci_hcd 0000:00:1d.7: restoring config space at offset >>> 0x1 (was 0x2900006, writing 0x2900002) >>> [ 154.342335] ehci_hcd 0000:00:1d.7: wake-up capability disabled by ACPI >>> [ 154.342349] ehci_hcd 0000:00:1d.7: PME# disabled >>> [ 154.342374] pci 0000:00:1e.0: restoring config space at offset 0xf >>> (was 0x60000, writing 0x600ff) >>> [ 154.342606] atl2 0000:03:00.0: restoring config space at offset 0x1 >>> (was 0x100006, writing 0x100406) >>> [ 154.343209] PM: early resume of devices complete after 1.941 msecs >>> [ 154.343454] i915 0000:00:02.0: PCI INT A -> GSI 16 (level, low) -> >>> IRQ 16 >>> [ 154.343470] i915 0000:00:02.0: setting latency timer to 64 >>> [ 154.347098] snd_hda_intel 0000:00:1b.0: PCI INT A -> GSI 16 (level, >>> low) -> IRQ 16 >>> [ 154.347117] snd_hda_intel 0000:00:1b.0: setting latency timer to 64 >>> [ 154.347218] snd_hda_intel 0000:00:1b.0: irq 43 for MSI/MSI-X >>> [ 154.347424] uhci_hcd 0000:00:1d.0: PCI INT A -> GSI 23 (level, low) >>> -> IRQ 23 >>> [ 154.347442] uhci_hcd 0000:00:1d.0: setting latency timer to 64 >>> [ 154.347479] usb usb2: root hub lost power or was reset >>> [ 154.347543] uhci_hcd 0000:00:1d.1: PCI INT B -> GSI 19 (level, low) >>> -> IRQ 19 >>> [ 154.347559] uhci_hcd 0000:00:1d.1: setting latency timer to 64 >>> [ 154.347593] usb usb3: root hub lost power or was reset >>> [ 154.347653] uhci_hcd 0000:00:1d.2: PCI INT C -> GSI 18 (level, low) >>> -> IRQ 18 >>> [ 154.347670] uhci_hcd 0000:00:1d.2: setting latency timer to 64 >>> [ 154.347702] usb usb4: root hub lost power or was reset >>> [ 154.347760] uhci_hcd 0000:00:1d.3: PCI INT D -> GSI 16 (level, low) >>> -> IRQ 16 >>> [ 154.347776] uhci_hcd 0000:00:1d.3: setting latency timer to 64 >>> [ 154.347808] usb usb5: root hub lost power or was reset >>> [ 154.347867] ehci_hcd 0000:00:1d.7: PCI INT A -> GSI 23 (level, low) >>> -> IRQ 23 >>> [ 154.347884] ehci_hcd 0000:00:1d.7: setting latency timer to 64 >>> [ 154.347988] pci 0000:00:1e.0: setting latency timer to 64 >>> [ 154.348125] ata_piix 0000:00:1f.2: PCI INT B -> GSI 19 (level, low) >>> -> IRQ 19 >>> [ 154.348140] ata_piix 0000:00:1f.2: setting latency timer to 64 >>> [ 154.354172] atl2 0000:03:00.0: PCI INT A -> GSI 17 (level, low) -> >>> IRQ 17 >>> [ 154.354192] atl2 0000:03:00.0: setting latency timer to 64 >>> [ 154.354309] atl2 0000:03:00.0: irq 44 for MSI/MSI-X >>> [ 154.354722] sd 1:0:0:0: [sda] Starting disk >>> [ 154.525453] ata2.00: ACPI cmd ef/03:44:00:00:00:a0 (SET FEATURES) >>> filtered out >>> [ 154.525470] ata2.00: ACPI cmd ef/03:0c:00:00:00:a0 (SET FEATURES) >>> filtered out >>> [ 154.531325] ata2.00: configured for UDMA/66 >>> [ 154.591089] usb 1-5: reset high-speed USB device number 2 using ehci_hcd >>> [ 154.805066] PM: resume of devices complete after 461.739 msecs >>> [ 154.805801] Restarting tasks ... done. >>> [ 154.832376] video LNXVIDEO:00: Restoring backlight state >>> [ 155.964388] atl2: eth0 NIC Link is Up<100 Mbps Full Duplex> >>> [ 265.377852] PM: Syncing filesystems ... done. >>> [ 265.427397] Freezing user space processes ... (elapsed 0.01 seconds) >>> done. >>> [ 265.438118] Freezing remaining freezable tasks ... (elapsed 0.01 >>> seconds) done. >>> [ 265.449211] Suspending console(s) (use no_console_suspend to debug) >>> [ 265.451744] sd 1:0:0:0: [sda] Stopping disk >>> [ 265.555169] ata_piix 0000:00:1f.2: PCI INT B disabled >>> [ 265.555281] ehci_hcd 0000:00:1d.7: PCI INT A disabled >>> [ 265.555336] uhci_hcd 0000:00:1d.3: PCI INT D disabled >>> [ 265.555384] uhci_hcd 0000:00:1d.2: PCI INT C disabled >>> [ 265.555432] uhci_hcd 0000:00:1d.1: PCI INT B disabled >>> [ 265.555479] uhci_hcd 0000:00:1d.0: PCI INT A disabled >>> [ 265.555639] snd_hda_intel 0000:00:1b.0: PCI INT A disabled >>> [ 265.556302] i915 0000:00:02.0: PCI INT A disabled >>> [ 265.558207] ACPI handle has no context! >>> [ 265.558302] atl2 0000:03:00.0: PCI INT A disabled >>> [ 265.558316] ACPI handle has no context! >>> [ 265.569117] PM: suspend of devices complete after 119.214 msecs >>> [ 265.580216] ehci_hcd 0000:00:1d.7: PME# enabled >>> [ 265.580261] ehci_hcd 0000:00:1d.7: wake-up capability enabled by ACPI >>> [ 265.591121] uhci_hcd 0000:00:1d.3: wake-up capability enabled by ACPI >>> [ 265.591186] uhci_hcd 0000:00:1d.2: wake-up capability enabled by ACPI >>> [ 265.591244] uhci_hcd 0000:00:1d.1: wake-up capability enabled by ACPI >>> [ 265.591302] uhci_hcd 0000:00:1d.0: wake-up capability enabled by ACPI >>> [ 265.591581] PM: late suspend of devices complete after 22.446 msecs >>> [ 265.591615] ACPI: Preparing to enter system sleep state S3 >>> [ 265.592832] PM: Saving platform NVS memory >>> [ 265.594133] Disabling non-boot CPUs ... >>> [ 265.594133] ACPI: Low-level resume complete >>> [ 265.594133] PM: Restoring platform NVS memory >>> [ 265.594133] Force enabled HPET at resume >>> [ 265.594133] ACPI: Waking up from system sleep state S3 >>> [ 265.621463] snd_hda_intel 0000:00:1b.0: restoring config space at >>> offset 0x1 (was 0x100006, writing 0x100002) >>> [ 265.621528] pcieport 0000:00:1c.0: restoring config space at offset >>> 0x9 (was 0x1fff1, writing 0x10511041) >>> [ 265.621544] pcieport 0000:00:1c.0: restoring config space at offset >>> 0x8 (was 0xfff0, writing 0x10301020) >>> [ 265.621559] pcieport 0000:00:1c.0: restoring config space at offset >>> 0x7 (was 0xf0, writing 0x3030) >>> [ 265.621582] pcieport 0000:00:1c.0: restoring config space at offset >>> 0x1 (was 0x100104, writing 0x100507) >>> [ 265.621667] pcieport 0000:00:1c.1: restoring config space at offset >>> 0x9 (was 0x1fff1, writing 0x10111001) >>> [ 265.621684] pcieport 0000:00:1c.1: restoring config space at offset >>> 0x7 (was 0xf0, writing 0x2020) >>> [ 265.621706] pcieport 0000:00:1c.1: restoring config space at offset >>> 0x1 (was 0x100106, writing 0x100507) >>> [ 265.621791] pcieport 0000:00:1c.2: restoring config space at offset >>> 0x7 (was 0xf0, writing 0x1010) >>> [ 265.621813] pcieport 0000:00:1c.2: restoring config space at offset >>> 0x1 (was 0x100106, writing 0x100507) >>> [ 265.621899] uhci_hcd 0000:00:1d.0: restoring config space at offset >>> 0x1 (was 0x2800005, writing 0x2800001) >>> [ 265.621938] uhci_hcd 0000:00:1d.0: wake-up capability disabled by ACPI >>> [ 265.621983] uhci_hcd 0000:00:1d.1: restoring config space at offset >>> 0x1 (was 0x2800005, writing 0x2800001) >>> [ 265.622057] uhci_hcd 0000:00:1d.1: wake-up capability disabled by ACPI >>> [ 265.622111] uhci_hcd 0000:00:1d.2: restoring config space at offset >>> 0x1 (was 0x2800005, writing 0x2800001) >>> [ 265.622139] uhci_hcd 0000:00:1d.2: wake-up capability disabled by ACPI >>> [ 265.622183] uhci_hcd 0000:00:1d.3: restoring config space at offset >>> 0x1 (was 0x2800005, writing 0x2800001) >>> [ 265.622210] uhci_hcd 0000:00:1d.3: wake-up capability disabled by ACPI >>> [ 265.622267] ehci_hcd 0000:00:1d.7: restoring config space at offset >>> 0x1 (was 0x2900006, writing 0x2900002) >>> [ 265.622305] ehci_hcd 0000:00:1d.7: wake-up capability disabled by ACPI >>> [ 265.622320] ehci_hcd 0000:00:1d.7: PME# disabled >>> [ 265.622344] pci 0000:00:1e.0: restoring config space at offset 0xf >>> (was 0x60000, writing 0x600ff) >>> [ 265.622575] atl2 0000:03:00.0: restoring config space at offset 0x1 >>> (was 0x100006, writing 0x100406) >>> [ 265.623172] PM: early resume of devices complete after 1.925 msecs >>> [ 265.623416] i915 0000:00:02.0: PCI INT A -> GSI 16 (level, low) -> >>> IRQ 16 >>> [ 265.623432] i915 0000:00:02.0: setting latency timer to 64 >>> [ 265.627096] snd_hda_intel 0000:00:1b.0: PCI INT A -> GSI 16 (level, >>> low) -> IRQ 16 >>> [ 265.627115] snd_hda_intel 0000:00:1b.0: setting latency timer to 64 >>> [ 265.627215] snd_hda_intel 0000:00:1b.0: irq 43 for MSI/MSI-X >>> [ 265.627429] uhci_hcd 0000:00:1d.0: PCI INT A -> GSI 23 (level, low) >>> -> IRQ 23 >>> [ 265.627448] uhci_hcd 0000:00:1d.0: setting latency timer to 64 >>> [ 265.627485] usb usb2: root hub lost power or was reset >>> [ 265.627548] uhci_hcd 0000:00:1d.1: PCI INT B -> GSI 19 (level, low) >>> -> IRQ 19 >>> [ 265.627564] uhci_hcd 0000:00:1d.1: setting latency timer to 64 >>> [ 265.627597] usb usb3: root hub lost power or was reset >>> [ 265.627659] uhci_hcd 0000:00:1d.2: PCI INT C -> GSI 18 (level, low) >>> -> IRQ 18 >>> [ 265.627675] uhci_hcd 0000:00:1d.2: setting latency timer to 64 >>> [ 265.627707] usb usb4: root hub lost power or was reset >>> [ 265.627766] uhci_hcd 0000:00:1d.3: PCI INT D -> GSI 16 (level, low) >>> -> IRQ 16 >>> [ 265.627781] uhci_hcd 0000:00:1d.3: setting latency timer to 64 >>> [ 265.627814] usb usb5: root hub lost power or was reset >>> [ 265.627873] ehci_hcd 0000:00:1d.7: PCI INT A -> GSI 23 (level, low) >>> -> IRQ 23 >>> [ 265.627889] ehci_hcd 0000:00:1d.7: setting latency timer to 64 >>> [ 265.627993] pci 0000:00:1e.0: setting latency timer to 64 >>> [ 265.628130] ata_piix 0000:00:1f.2: PCI INT B -> GSI 19 (level, low) >>> -> IRQ 19 >>> [ 265.628145] ata_piix 0000:00:1f.2: setting latency timer to 64 >>> [ 265.634153] atl2 0000:03:00.0: PCI INT A -> GSI 17 (level, low) -> >>> IRQ 17 >>> [ 265.634173] atl2 0000:03:00.0: setting latency timer to 64 >>> [ 265.634290] atl2 0000:03:00.0: irq 44 for MSI/MSI-X >>> [ 265.634712] sd 1:0:0:0: [sda] Starting disk >>> [ 265.796709] ata2.00: ACPI cmd ef/03:44:00:00:00:a0 (SET FEATURES) >>> filtered out >>> [ 265.796726] ata2.00: ACPI cmd ef/03:0c:00:00:00:a0 (SET FEATURES) >>> filtered out >>> [ 265.803326] ata2.00: configured for UDMA/66 >>> [ 265.880091] usb 1-5: reset high-speed USB device number 2 using ehci_hcd >>> [ 266.091960] PM: resume of devices complete after 468.673 msecs >>> [ 266.092731] Restarting tasks ... done. >>> [ 266.112098] video LNXVIDEO:00: Restoring backlight state >>> [ 267.219459] atl2: eth0 NIC Link is Up<100 Mbps Full Duplex> >>> [ 554.912659] FS-Cache: Loaded >>> [ 554.950749] FS-Cache: Netfs 'cifs' registered for caching >>> [ 555.047550] CIFS VFS: default security mechanism requested. The >>> default security mechanism will be upgraded from ntlm to ntlmv2 in >>> kernel release 3.2 >>> [ 2094.090461] PM: Syncing filesystems ... done. >>> [ 2094.155385] Freezing user space processes ... (elapsed 0.01 seconds) >>> done. >>> [ 2094.166113] Freezing remaining freezable tasks ... >>> [ 2114.175108] Freezing of tasks failed after 20.00 seconds (1 tasks >>> refusing to freeze, wq_busy=0): >>> [ 2114.175586] cifsd S ccb50b40 0 2219 2 0x00800000 >>> [ 2114.175611] cc6cc000 00000046 00000000 ccb50b40 cc776b40 cc41d000 >>> cc776780 cc61d960 >>> [ 2114.175635] cc4d81c0 c178ec40 c178ec40 ccb50980 00000000 ccb50980 >>> c1031e88 00000001 >>> [ 2114.175660] c1031f9f c10230f5 c1559ee1 c17a7140 c1031e88 00000001 >>> c1031f9f c10230f5 >>> [ 2114.175684] Call Trace: >>> [ 2114.175710] [] ? get_parent_ip+0x8/0x20 >>> [ 2114.175723] [] ? add_preempt_count+0x5f/0xa0 >>> [ 2114.175747] [] ? default_spin_lock_flags+0x5/0x10 >>> [ 2114.175770] [] ? _raw_spin_lock_irqsave+0x31/0x50 >>> [ 2114.175782] [] ? get_parent_ip+0x8/0x20 >>> [ 2114.175794] [] ? add_preempt_count+0x5f/0xa0 >>> [ 2114.175807] [] ? default_spin_lock_flags+0x5/0x10 >>> [ 2114.175820] [] ? _raw_spin_lock_irqsave+0x31/0x50 >>> [ 2114.175832] [] ? get_parent_ip+0x8/0x20 >>> [ 2114.175846] [] ? schedule_timeout+0x111/0x1d0 >>> [ 2114.175860] [] ? tcp_rcv_established+0x170/0x760 >>> [ 2114.175878] [] ? usleep_range+0x40/0x40 >>> [ 2114.175897] [] ? sk_wait_data+0xa7/0xb0 >>> [ 2114.175920] [] ? abort_exclusive_wait+0x90/0x90 >>> [ 2114.175943] [] ? tcp_recvmsg+0x588/0xb80 >>> [ 2114.175956] [] ? __switch_to+0xea/0x1d0 >>> [ 2114.175976] [] ? native_sched_clock+0x27/0x90 >>> [ 2114.175993] [] ? inet_recvmsg+0x6f/0xb0 >>> [ 2114.176063] [] ? sock_recvmsg+0xe0/0x120 >>> [ 2114.176086] [] ? timerqueue_add+0x58/0xb0 >>> [ 2114.176098] [] ? get_parent_ip+0x8/0x20 >>> [ 2114.176112] [] ? get_parent_ip+0x8/0x20 >>> [ 2114.176123] [] ? sub_preempt_count+0x67/0xa0 >>> [ 2114.176145] [] ? _raw_spin_unlock_irqrestore+0x1b/0x40 >>> [ 2114.176165] [] ? hrtimer_try_to_cancel+0x43/0xa0 >>> [ 2114.176178] [] ? hrtimer_cancel+0x11/0x20 >>> [ 2114.176191] [] ? schedule_hrtimeout_range_clock+0xcc/0x170 >>> [ 2114.176206] [] ? update_rmtp+0x80/0x80 >>> [ 2114.176219] [] ? kernel_recvmsg+0x37/0x50 >>> [ 2114.176268] [] ? cifs_readv_from_socket+0x148/0x2b0 [cifs] >>> [ 2114.176283] [] ? get_parent_ip+0x8/0x20 >>> [ 2114.176309] [] ? cifs_read_from_socket+0x1c/0x20 [cifs] >>> [ 2114.176333] [] ? cifs_demultiplex_thread+0x112/0xc20 [cifs] >>> [ 2114.176348] [] ? get_parent_ip+0x8/0x20 >>> [ 2114.176370] [] ? dequeue_mid+0x60/0x60 [cifs] >>> [ 2114.176391] [] ? kthread+0x69/0x70 >>> [ 2114.176406] [] ? kthread_worker_fn+0x150/0x150 >>> [ 2114.176420] [] ? kernel_thread_helper+0x6/0xd >>> [ 2114.176466] >>> [ 2114.176473] Restarting tasks ... done. >>> [ 2114.201577] video LNXVIDEO:00: Restoring backlight state >>> [ 2114.210975] lxpanel[1452]: segfault at 0 ip b6ead703 sp bfea8924 >>> error 4 in libc-2.13.so[b6e39000+13e000] >>> -- > Thanks for reporting this. Does the following patch fix it? > > -----------------------[snip]------------------------ > > cifs: attempt to freeze while looping on a receive attempt > > In the recent overhaul of the demultiplex thread receive path, we > neglected to ensure that we attempt to freeze on each pass through the > loop. > > Reported-by: Woody Suwalski > Signed-off-by: Jeff Layton > --- > fs/cifs/connect.c | 2 ++ > 1 files changed, 2 insertions(+), 0 deletions(-) > > diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c > index bf82f88..d166e3a 100644 > --- a/fs/cifs/connect.c > +++ b/fs/cifs/connect.c > @@ -441,6 +441,8 @@ cifs_readv_from_socket(struct TCP_Server_Info *server, struct kvec *iov_orig, > smb_msg.msg_controllen = 0; > > for (total_read = 0; to_read; total_read += length, to_read -= length) { > + try_to_freeze(); > + > if (server_unresponsive(server)) { > total_read = -EAGAIN; > break; Jeff, the patch does work (if a right module is insmoded ;-) ) Woody