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2011-04-06x86-32, fpu: Fix FPU exception handling on non-SSE systemsHans Rosenfeld1-1/+1
On 32bit systems without SSE (that is, they use FSAVE/FRSTOR for FPU context switches), FPU exceptions in user mode cause Oopses, BUGs, recursive faults and other nasty things: fpu exception: 0000 [#1] last sysfs file: /sys/power/state Modules linked in: psmouse evdev pcspkr serio_raw [last unloaded: scsi_wait_scan] Pid: 1638, comm: fxsave-32-excep Not tainted 2.6.35-07798-g58a992b-dirty #633 VP3-596B-DD/VT82C597 EIP: 0060:[<c1003527>] EFLAGS: 00010202 CPU: 0 EIP is at math_error+0x1b4/0x1c8 EAX: 00000003 EBX: cf9be7e0 ECX: 00000000 EDX: cf9c5c00 ESI: cf9d9fb4 EDI: c1372db3 EBP: 00000010 ESP: cf9d9f1c DS: 007b ES: 007b FS: 0000 GS: 00e0 SS: 0068 Process fxsave-32-excep (pid: 1638, ti=cf9d8000 task=cf9be7e0 task.ti=cf9d8000) Stack: 00000000 00000301 00000004 00000000 00000000 cf9d3000 cf9da8f0 00000001 <0> 00000004 cf9b6b60 c1019a6b c1019a79 00000020 00000242 000001b6 cf9c5380 <0> cf806b40 cf791880 00000000 00000282 00000282 c108a213 00000020 cf9c5380 Call Trace: [<c1019a6b>] ? need_resched+0x11/0x1a [<c1019a79>] ? should_resched+0x5/0x1f [<c108a213>] ? do_sys_open+0xbd/0xc7 [<c108a213>] ? do_sys_open+0xbd/0xc7 [<c100353b>] ? do_coprocessor_error+0x0/0x11 [<c12d5965>] ? error_code+0x65/0x70 Code: a8 20 74 30 c7 44 24 0c 06 00 03 00 8d 54 24 04 89 d9 b8 08 00 00 00 e8 9b 6d 02 00 eb 16 8b 93 5c 02 00 00 eb 05 e9 04 ff ff ff <9b> dd 32 9b e9 16 ff ff ff 81 c4 84 00 00 00 5b 5e 5f 5d c3 c6 EIP: [<c1003527>] math_error+0x1b4/0x1c8 SS:ESP 0068:cf9d9f1c This usually continues in slight variations until the system is reset. This bug was introduced by commit 58a992b9cbaf449aeebd3575c3695a9eb5d95b5e: x86-32, fpu: Rewrite fpu_save_init() Signed-off-by: Hans Rosenfeld <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: H. Peter Anvin <[email protected]>
2011-04-06staging: usbip: bugfix for isochronous packets and optimizationArjan Mels4-14/+122
For isochronous packets the actual_length is the sum of the actual length of each of the packets, however between the packets might be padding, so it is not sufficient to just send the first actual_length bytes of the buffer. To fix this and simultanesouly optimize the bandwidth the content of the isochronous packets are send without the padding, the padding is restored on the receiving end. Signed-off-by: Arjan Mels <[email protected]> Cc: Takahiro Hirofuchi <[email protected]> Cc: Max Vozeler <[email protected]> Cc: stable <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2011-04-06staging: usbip: bugfix add number of packets for isochronous framesArjan Mels1-1/+6
The number_of_packets was not transmitted for RET_SUBMIT packets. The linux client used the stored number_of_packet from the submitted request. The windows userland client does not do this however and needs to know the number_of_packets to determine the size of the transmission. Signed-off-by: Arjan Mels <[email protected]> Cc: Takahiro Hirofuchi <[email protected]> Cc: Max Vozeler <[email protected]> Cc: stable <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2011-04-06staging: usbip: bugfixes related to kthread conversionArjan Mels1-25/+15
When doing a usb port reset do a queued reset instead to prevent a deadlock: the reset will cause the driver to unbind, causing the usb_driver_lock_for_reset to stall. Signed-off-by: Arjan Mels <[email protected]> Cc: Takahiro Hirofuchi <[email protected]> Cc: Max Vozeler <[email protected]> Cc: Arnd Bergmann <[email protected]> Cc: stable <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2011-04-06staging: usbip: fix shutdown problems.Arjan Mels1-2/+4
When shuting down the tcp_rx and tcp_tx threads first check if they are not closed already (maybe because an error caused them to return). Signed-off-by: Arjan Mels <[email protected]> Cc: Takahiro Hirofuchi <[email protected]> Cc: Max Vozeler <[email protected]> Cc: Arnd Bergmann <[email protected]> Cc: stable <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2011-04-06staging: hv: Fix GARP not sent after Quick MigrationHaiyang Zhang1-0/+24
After Quick Migration, the network is not immediately operational in the current context when receiving RNDIS_STATUS_MEDIA_CONNECT event. So, I added another netif_notify_peers() into a scheduled work, otherwise GARP packet will not be sent after quick migration, and cause network disconnection. Thanks to Mike Surcouf <[email protected]> for reporting the bug and testing the patch. Reported-by: Mike Surcouf <[email protected]> Tested-by: Mike Surcouf <[email protected]> Signed-off-by: Haiyang Zhang <[email protected]> Signed-off-by: Hank Janssen <[email protected]> Signed-off-by: Abhishek Kane <[email protected]> Signed-off-by: K. Y. Srinivasan <[email protected]> Cc: stable <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2011-04-06MAINTAINERS: add entry for Xen network backendIan Campbell1-0/+7
Signed-off-by: Ian Campbell <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-04-06be2net: Fix suspend/resume operationPadmanabh Ratnakar1-0/+1
eq_next_idx is not getting reset to zero during suspend. This causes resume to fail. Added the fix. Signed-off-by: Sarveswara Rao Mygapula <[email protected]> Signed-off-by: Padmanabh Ratnakar <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-04-06be2net: Rename some struct members for clarityPadmanabh Ratnakar2-7/+7
Renamed msix_vec_idx to eq_idx in be_eq_obj struct. Renamed msix_vec_next_idx to eq_next_idx in be_adapter structure. These members are used in INTX mode also. Signed-off-by: Sarveswara Rao Mygapula <[email protected]> Signed-off-by: Padmanabh Ratnakar <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-04-06pppoe: drop PPPOX_ZOMBIEs in pppoe_flush_devUlrich Weber1-1/+1
otherwise we loop forever if a PPPoE socket was set to PPPOX_ZOMBIE state by a PADT message when the ethernet device is going down afterwards. Signed-off-by: Ulrich Weber <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-04-06Merge branch 'master' of ↵David S. Miller16-16/+52
git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
2011-04-06dsa/mv88e6131: add support for mv88e6085 switchPeter Korsgaard2-4/+21
The mv88e6085 is identical to the mv88e6095, except that all ports are 10/100 Mb/s, so use the existing setup code except for the cpu/dsa speed selection in _setup_port(). Signed-off-by: Peter Korsgaard <[email protected]> Acked-by: Lennert Buytenhek <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-04-06NFS: Fix a signed vs. unsigned secinfo bugBryan Schumaker1-33/+25
rpc_authflavor_t is cast from an unsigned int, but the initial code tried to use it as a signed int. I fix this by passing an rpc_authflavor_t pointer around, and returning signed integers from functions. Signed-off-by: Bryan Schumaker <[email protected]> Reported-by: Dan Carpenter <[email protected]> Signed-off-by: Trond Myklebust <[email protected]>
2011-04-06x86, hibernate: Initialize mmu_cr4_features during bootH. Peter Anvin1-0/+5
Restore the initialization of mmu_cr4_features during boot, which was removed without comment in checkin e5f15b45ddf3afa2bbbb10c7ea34fb32b6de0a0e x86: Cleanup highmap after brk is concluded thereby breaking resume from hibernate. This restores previous functionality in approximately the same place, and corrects the reading of %cr4 on pre-CPUID hardware (%cr4 exists if and only if CPUID is supported.) However, part of the problem is that the hibernate suspend/resume sequence should manage the save/restore of %cr4 explicitly. Signed-off-by: H. Peter Anvin <[email protected]> Cc: Rafael J. Wysocki <[email protected]> Cc: Stefano Stabellini <[email protected]> Cc: Yinghai Lu <[email protected]> LKML-Reference: <[email protected]>
2011-04-06ipv6: Enable RFS sk_rxhash tracking for ipv6 sockets (v2)Neil Horman2-1/+6
properly record sk_rxhash in ipv6 sockets (v2) Noticed while working on another project that flows to sockets which I had open on a test systems weren't getting steered properly when I had RFS enabled. Looking more closely I found that: 1) The affected sockets were all ipv6 2) They weren't getting steered because sk->sk_rxhash was never set from the incomming skbs on that socket. This was occuring because there are several points in the IPv4 tcp and udp code which save the rxhash value when a new connection is established. Those calls to sock_rps_save_rxhash were never added to the corresponding ipv6 code paths. This patch adds those calls. Tested by myself to properly enable RFS functionalty on ipv6. Change notes: v2: Filtered UDP to only arm RFS on bound sockets (Eric Dumazet) Signed-off-by: Neil Horman <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-04-06be2net: Fix a potential crash during shutdown.Ajit Khaparde1-3/+5
adapter could remain uninitialized if probe fails for some reason. A null pointer access could cause a crash if be_shutdown is called after that. Signed-off-by: Ajit Khaparde <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-04-06bna: Fix for handling firmware heartbeat failureRasesh Mody1-7/+3
This patch contains a fix for gracefully handling firmware heartbeat failure instead of forcing panic. Signed-off-by: Debashis Dutt <[email protected]> Signed-off-by: Rasesh Mody <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-04-06can: mcp251x: Allow pass IRQ flags through platform data.Enric Balletbo i Serra2-1/+4
When an interrupt occurs, the INT pin is driven low by the MCP251x controller (falling edge) but in some cases the INT pin can be connected to the MPU through a transistor or level translator which inverts this signal. In this case interrupt should be configured in rising edge. This patch adds support to pass the IRQ flags via mcp251x_platform_data. Signed-off-by: Enric Balletbo i Serra <[email protected]> Acked-by: Wolfgang Grandegger <[email protected]> Acked-by: Marc Kleine-Budde <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-04-06smsc911x: fix mac_lock acquision before calling smsc911x_mac_readEnric Balletbo i Serra1-3/+5
When SMSC911X_SAVE_MAC_ADDRESS flag is enabled the driver calls smsc911x_mac_read and smsc911x_mac_read function without acquiring mac_lock spinlock This patch fixes following warning smsc911x: Driver version 2008-10-21. ------------[ cut here ]------------ WARNING: at drivers/net/smsc911x.c:261 smsc911x_mac_read+0x24/0x220() Modules linked in: [<c0060858>] (unwind_backtrace+0x0/0xe0) from [<c009322c>] (warn_slowpath_common+0x4c/0x64) [<c009322c>] (warn_slowpath_common+0x4c/0x64) from [<c009325c>] (warn_slowpath_null+0x18/0x1c) [<c009325c>] (warn_slowpath_null+0x18/0x1c) from [<c0324bec>] (smsc911x_mac_read+0x24/0x220) [<c0324bec>] (smsc911x_mac_read+0x24/0x220) from [<c0434788>] (smsc911x_read_mac_address+0x18/0x6c) [<c0434788>] (smsc911x_read_mac_address+0x18/0x6c) from [<c0434c74>] (smsc911x_drv_probe+0x498/0x1788) [<c0434c74>] (smsc911x_drv_probe+0x498/0x1788) from [<c02d3e54>] (platform_drv_probe+0x14/0x18) [<c02d3e54>] (platform_drv_probe+0x14/0x18) from [<c02d2d60>] (driver_probe_device+0xc8/0x184) [<c02d2d60>] (driver_probe_device+0xc8/0x184) from [<c02d2e84>] (__driver_attach+0x68/0x8c) [<c02d2e84>] (__driver_attach+0x68/0x8c) from [<c02d1fc8>] (bus_for_each_dev+0x48/0x74) [<c02d1fc8>] (bus_for_each_dev+0x48/0x74) from [<c02d2660>] (bus_add_driver+0x9c/0x228) [<c02d2660>] (bus_add_driver+0x9c/0x228) from [<c02d3598>] (driver_register+0xa0/0x124) [<c02d3598>] (driver_register+0xa0/0x124) from [<c0050668>] (do_one_initcall+0x94/0x168) [<c0050668>] (do_one_initcall+0x94/0x168) from [<c0008984>] (kernel_init+0xa0/0x154) [<c0008984>] (kernel_init+0xa0/0x154) from [<c005afac>] (kernel_thread_exit+0x0/0x8) ---[ end trace 2c931a35b7885770 ]--- Signed-off-by: Enric Balletbo i Serra <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2011-04-06sh: select ARCH_NO_SYSDEV_OPS.Paul Mundt1-0/+1
Now that everything that was using these interfaces has been converted to the syscore ops, prevent new code from using the old API. Signed-off-by: Paul Mundt <[email protected]>
2011-04-06ARM: arch-shmobile: only run FSI init on respective boardsKuninori Morimoto1-5/+3
If several boards are enabled in the kernel configuration, fsi_init_pm_clock() functions from board-ap4evb.c will run on any of them. Prevent this by calling these functions from the .init_machine() callback instead of using device_initcall(). Signed-off-by: Kuninori Morimoto <[email protected]> Cc: Magnus Damm <[email protected]> Signed-off-by: Paul Mundt <[email protected]>
2011-04-06ARM: arch-shmobile: only run HDMI init on respective boardsGuennadi Liakhovetski2-13/+8
If several boards are enabled in the kernel configuration, hdmi_init_pm_clock() functions from board-ap4evb.c and board-mackerel.c will run on any of them. Prevent this by calling these functions from the .init_machine() callback instead of using device_initcall(). Signed-off-by: Guennadi Liakhovetski <[email protected]> Cc: Magnus Damm <[email protected]> Tested-by: Kuninori Morimoto <[email protected]> Signed-off-by: Paul Mundt <[email protected]>
2011-04-06Revert "net/sunrpc: Use static const char arrays"Trond Myklebust1-1/+1
This reverts commit 411b5e05617593efebc06241dbc56f42150f2abe. Olga Kornievskaia reports: Problem: linux client mounting linux server using rc4-hmac-md5 enctype. gssd fails with create a context after receiving a reply from the server. Diagnose: putting printout statements in the server kernel and kerberos libraries revealed that client and server derived different integrity keys. Server kernel code was at fault due the the commit [aglo@skydive linux-pnfs]$ git show 411b5e05617593efebc06241dbc56f42150f2abe Trond: The problem is that since it relies on virt_to_page(), you cannot call sg_set_buf() for data in the const section. Reported-by: Olga Kornievskaia <[email protected]> Signed-off-by: Trond Myklebust <[email protected]> Cc: [email protected] [2.6.36+]
2011-04-06ARM: mach-shmobile: Correctly check for CONFIG_MACH_MACKERELSimon Horman2-2/+2
I made a bit of a thinko when adding Mackerel to the boards that support zboot using MMCIF. Reported-by: Magnus Damm <[email protected]> Signed-off-by: Simon Horman <[email protected]> Signed-off-by: Paul Mundt <[email protected]>
2011-04-06efifb: Add override for 11" Macbook Air 3,1Matthew Garrett1-0/+4
The 11" Macbook Air appears to claim that its stride is 1366, when it's actually 2048. Override it. Signed-off-by: Matthew Garrett <[email protected]> Signed-off-by: Peter Jones <[email protected]> Signed-off-by: Paul Mundt <[email protected]>
2011-04-06efifb: Support overriding fields FW tells us with the DMI data.Peter Jones1-61/+88
Some machines apparently give us bogus linelength/stride/pitch data, so we need to support letting the DMI table override the supplied data. I bet you can't guess whose machines I'm talking about. Signed-off-by: Peter Jones <[email protected]> Signed-off-by: Paul Mundt <[email protected]>
2011-04-06fb: Reduce priority of resource conflict messageMatthew Garrett1-1/+1
It's expected that efifb will conflict with a native driver, so the handover message should be informational rather than an error. Signed-off-by: Matthew Garrett <[email protected]> Acked-by: Dave Airlie <[email protected]> Signed-off-by: Paul Mundt <[email protected]>
2011-04-06savagefb: Remove obsolete else clause in savage_setup_i2c_busTormod Volden1-2/+1
The else clause was not needed after the cleanup in commit b8901b091db260b0f0101d6395ce5c6016835a47 Signed-off-by: Tormod Volden <[email protected]> Signed-off-by: Paul Mundt <[email protected]>
2011-04-06savagefb: Set up I2C based on chip family instead of card idTormod Volden1-5/+4
In practice this means enabling I2C (for DDC2) on all prosavage cards, like the xorg ddx does. The savage4 and savage2000 families have only one member each, so there is no change for those. Tested on TwisterK. Signed-off-by: Tormod Volden <[email protected]> Signed-off-by: Paul Mundt <[email protected]>
2011-04-06savagefb: Replace magic register address with defineTormod Volden1-1/+1
MM_SERIAL1 was already defined, but not used. Signed-off-by: Tormod Volden <[email protected]> Signed-off-by: Paul Mundt <[email protected]>
2011-04-06drivers/video/bfin-lq035q1-fb.c: introduce missing kfreeJulia Lawall1-1/+3
Error handling code following a kmalloc should free the allocated data. The semantic match that finds the problem is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @r exists@ local idexpression x; statement S; expression E; identifier f,f1,l; position p1,p2; expression *ptr != NULL; @@ x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...); ... if (x == NULL) S <... when != x when != if (...) { <+...x...+> } ( x->f1 = E | (x->f1 == NULL || ...) | f(...,x->f1,...) ) ...> ( return \(0\|<+...x...+>\|ptr\); | return@p2 ...; ) @script:python@ p1 << r.p1; p2 << r.p2; @@ print "* file: %s kmalloc %s return %s" % (p1[0].file,p1[0].line,p2[0].line) // </smpl> Signed-off-by: Julia Lawall <[email protected]> Acked-by: Mike Frysinger <[email protected]> Signed-off-by: Paul Mundt <[email protected]>
2011-04-06video: s3c-fb: fix checkpatch errors and warningJingoo Han1-3/+5
This patch fixes the checkpatch errors listed below: ERROR: space required before the open parenthesis '(' ERROR: need consistent spacing around '+' (ctx:WxV) ERROR: space prohibited before that close parenthesis ')' Also, following warning is fixed by adding 'platid' variable which can reduce number of lines exceeding 80 characters. WARNING: line over 80 characters Signed-off-by: Jingoo Han <[email protected]> Signed-off-by: Paul Mundt <[email protected]>
2011-04-06HID: Add support for CH Pro ThrottleJiri Kosina2-0/+2
CH Pro Throttle needs NOGET the same way as other products from the same vendor require. Reported-by: Unavowed <[email protected]> Signed-off-by: Jiri Kosina <[email protected]>
2011-04-06HID: hid-magicmouse: Increase evdev buffer sizeChase Douglas1-0/+2
The evdev buffer isn't big enough when you get many fingers on the device. Bump up the buffer to a reasonable size, matching what other multitouch devices use. Without this change, events may be discarded in the evdev buffer before they are read. Reported-by: Simon Budig <[email protected]> Cc: Henrik Rydberg <[email protected]> Cc: Jiri Kosina <[email protected]> Cc: [email protected] Signed-off-by: Chase Douglas <[email protected]> Acked-by: Henrik Rydberg <[email protected]> Signed-off-by: Jiri Kosina <[email protected]>
2011-04-06xen: Allow PV-OPS kernel to detect whether XSAVE is supportedShan Haitao1-1/+10
Xen fails to mask XSAVE from the cpuid feature, despite not historically supporting guest use of XSAVE. However, now that XSAVE support has been added to Xen, we need to reliably detect its presence. The most reliable way to do this is to look at the OSXSAVE feature in cpuid which is set iff the OS (Xen, in this case), has set CR4.OSXSAVE. [ Cleaned up conditional a bit. - Jeremy ] Signed-off-by: Shan Haitao <[email protected]> Signed-off-by: Jeremy Fitzhardinge <[email protected]> Signed-off-by: Konrad Rzeszutek Wilk <[email protected]>
2011-04-06xen: just completely disable XSAVEJeremy Fitzhardinge1-17/+1
Some (old) versions of Xen just kill the domain if it tries to set any unknown bits in CR4, so we can't reliably probe for OSXSAVE in CR4. Since Xen doesn't support XSAVE for guests at the moment, and no such support is being worked on, there's no downside in just unconditionally masking XSAVE support. Signed-off-by: Jeremy Fitzhardinge <[email protected]> Signed-off-by: Konrad Rzeszutek Wilk <[email protected]>
2011-04-06Merge branch 'perf/urgent' of ↵Ingo Molnar2-65/+113
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux-2.6 into perf/urgent
2011-04-06KVM: move and fix substitue search for missing CPUID entriesAndre Przywara1-6/+25
If KVM cannot find an exact match for a requested CPUID leaf, the code will try to find the closest match instead of simply confessing it's failure. The implementation was meant to satisfy the CPUID specification, but did not properly check for extended and standard leaves and also didn't account for the index subleaf. Beside that this rule only applies to CPUID intercepts, which is not the only user of the kvm_find_cpuid_entry() function. So fix this algorithm and call it from kvm_emulate_cpuid(). This fixes a crash of newer Linux kernels as KVM guests on AMD Bulldozer CPUs, where bogus values were returned in response to a CPUID intercept. Signed-off-by: Andre Przywara <[email protected]> Signed-off-by: Avi Kivity <[email protected]>
2011-04-06KVM: fix XSAVE bit scanningAndre Przywara1-3/+3
When KVM scans the 0xD CPUID leaf for propagating the XSAVE save area leaves, it assumes that the leaves are contigious and stops at the first zero one. On AMD hardware there is a gap, though, as LWP uses leaf 62 to announce it's state save area. So lets iterate through all 64 possible leaves and simply skip zero ones to also cover later features. Signed-off-by: Andre Przywara <[email protected]> Signed-off-by: Avi Kivity <[email protected]>
2011-04-06KVM: Enable async page fault processingGleb Natapov1-2/+21
If asynchronous hva_to_pfn() is requested call GUP with FOLL_NOWAIT to avoid sleeping on IO. Check for hwpoison is done at the same time, otherwise check_user_page_hwpoison() will call GUP again and will put vcpu to sleep. Signed-off-by: Gleb Natapov <[email protected]> Signed-off-by: Avi Kivity <[email protected]>
2011-04-06KVM: fix crash on irqfd deassignMichael S. Tsirkin1-1/+1
irqfd in kvm used flush_work incorrectly: it assumed that work scheduled previously can't run after flush_work, but since kvm uses a non-reentrant workqueue (by means of schedule_work) we need flush_work_sync to get that guarantee. Signed-off-by: Michael S. Tsirkin <[email protected]> Reported-by: Jean-Philippe Menil <[email protected]> Tested-by: Jean-Philippe Menil <[email protected]> Signed-off-by: Avi Kivity <[email protected]>
2011-04-06ALSA: usb-audio: define another USB ID for a buggy USB MIDI cableTarek Soliman1-0/+1
There are many USB MIDI cables out there that have buggy firmware that reports it can do more than 4 bytes in a packet when they can only properly handle 4 This patch adds the ID of yet another one of those cables Signed-off-by: Tarek Soliman <[email protected]> Signed-off-by: Takashi Iwai <[email protected]>
2011-04-05Linux 2.6.39-rc2Linus Torvalds1-1/+1
2011-04-05ext4: init timer earlier to avoid a kernel panic in __save_error_infoTao Ma1-3/+5
During mount, when we fail to open journal inode or root inode, the __save_error_info will mod_timer. But actually s_err_report isn't initialized yet and the kernel oops. The detailed information can be found https://bugzilla.kernel.org/show_bug.cgi?id=32082. The best way is to check whether the timer s_err_report is initialized or not. But it seems that in include/linux/timer.h, we can't find a good function to check the status of this timer, so this patch just move the initializtion of s_err_report earlier so that we can avoid the kernel panic. The corresponding del_timer is also added in the error path. Reported-by: Sami Liedes <[email protected]> Signed-off-by: Tao Ma <[email protected]> Signed-off-by: "Theodore Ts'o" <[email protected]>
2011-04-05jbd2: fix potential memory leak on transaction commitZhang Huan1-1/+3
There is potential memory leak of journal head in function jbd2_journal_commit_transaction. The problem is that JBD2 will not reclaim the journal head of commit record if error occurs or journal is abotred. I use the following script to reproduce this issue, on a RHEL6 system. I found it very easy to reproduce with async commit enabled. mount /dev/sdb /mnt -o journal_checksum,journal_async_commit touch /mnt/xxx echo offline > /sys/block/sdb/device/state sync umount /mnt rmmod ext4 rmmod jbd2 Removal of the jbd2 module will make slab complaining that "cache `jbd2_journal_head': can't free all objects". Signed-off-by: Zhang Huan <[email protected]> Signed-off-by: "Theodore Ts'o" <[email protected]>
2011-04-05Merge branch 'for-linus' of ↵Linus Torvalds14-91/+148
git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-2.6-block * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-2.6-block: ide: always ensure that blk_delay_queue() is called if we have pending IO block: fix request sorting at unplug dm: improve block integrity support fs: export empty_aops ide: ide_requeue_and_plug() reinstate "always plug" behaviour blk-throttle: don't call xchg on bool ufs: remove unessecary blk_flush_plug block: make the flush insertion use the tail of the dispatch list block: get rid of elv_insert() interface block: dump request state on seeing a corrupted request completion
2011-04-05inotify: fix double free/corruption of stuct userEric Paris2-26/+14
On an error path in inotify_init1 a normal user can trigger a double free of struct user. This is a regression introduced by a2ae4cc9a16e ("inotify: stop kernel memory leak on file creation failure"). We fix this by making sure that if a group exists the user reference is dropped when the group is cleaned up. We should not explictly drop the reference on error and also drop the reference when the group is cleaned up. The new lifetime rules are that an inotify group lives from inotify_new_group to the last fsnotify_put_group. Since the struct user and inotify_devs are directly tied to this lifetime they are only changed/updated in those two locations. We get rid of all special casing of struct user or user->inotify_devs. Signed-off-by: Eric Paris <[email protected]> Cc: [email protected] (2.6.37 and up) Signed-off-by: Linus Torvalds <[email protected]>
2011-04-05ide: always ensure that blk_delay_queue() is called if we have pending IOJens Axboe1-21/+21
Just because we are not requeuing a request does not mean that some aren't pending. So always issue a blk_delay_queue() if either we are requeueing OR there's pending IO. This fixes a boot problem for some IDE boxes. Signed-off-by: Jens Axboe <[email protected]>
2011-04-05block: fix request sorting at unplugKonstantin Khlebnikov1-1/+1
Comparison function for list_sort() must be anticommutative, otherwise it is not sorting in ordinary meaning. But fortunately list_sort() always check ((*cmp)(priv, a, b) <= 0) it not distinguish negative and zero, so comparison function can implement only less-or-equal instead of full three-way comparison. Signed-off-by: Konstantin Khlebnikov <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
2011-04-05dm: improve block integrity supportMike Snitzer3-35/+93
The current block integrity (DIF/DIX) support in DM is verifying that all devices' integrity profiles match during DM device resume (which is past the point of no return). To some degree that is unavoidable (stacked DM devices force this late checking). But for most DM devices (which aren't stacking on other DM devices) the ideal time to verify all integrity profiles match is during table load. Introduce the notion of an "initialized" integrity profile: a profile that was blk_integrity_register()'d with a non-NULL 'blk_integrity' template. Add blk_integrity_is_initialized() to allow checking if a profile was initialized. Update DM integrity support to: - check all devices with _initialized_ integrity profiles match during table load; uninitialized profiles (e.g. for underlying DM device(s) of a stacked DM device) are ignored. - disallow a table load that would result in an integrity profile that conflicts with a DM device's existing (in-use) integrity profile - avoid clearing an existing integrity profile - validate all integrity profiles match during resume; but if they don't all we can do is report the mismatch (during resume we're past the point of no return) Signed-off-by: Mike Snitzer <[email protected]> Cc: Martin K. Petersen <[email protected]> Signed-off-by: Jens Axboe <[email protected]>
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