- 30 Oct, 2014 40 commits
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Loic Poulain authored
commit 4807b518 upstream. In this expression: seq = (seq - 1) % 8 seq (u8) is implicitly converted to an int in the arithmetic operation. So if seq value is 0, operation is ((0 - 1) % 8) => (-1 % 8) => -1. The new seq value is 0xff which is an invalid ACK value, we expect 0x07. It leads to frequent dropped ACK and retransmission. Fix this by using '&' binary operator instead of '%'. Signed-off-by:
Loic Poulain <loic.poulain@intel.com> Signed-off-by:
Marcel Holtmann <marcel@holtmann.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Felix Fietkau authored
commit 171cdab8 upstream. This reverts commit 09efc563 I've received reports that this change is decreasing throughput in some rare conditions on an AR9280 based device Signed-off-by:
Felix Fietkau <nbd@openwrt.org> Signed-off-by:
John W. Linville <linville@tuxdriver.com> Signed-off-by:
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Stanislaw Gruszka authored
commit 01f7feea upstream. Two bits control TX power on BBP_R1 register. Correct the mask, otherwise we clear additional bit on BBP_R1 register, what can have unknown, possible negative effect. Signed-off-by:
Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by:
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Ricardo Ribalda Delgado authored
commit 89ec3dcf upstream. Some implementations of modprobe fail to load the driver for a PCI device automatically because the "interface" part of the modalias from the kernel is lowercase, and the modalias from file2alias is uppercase. The "interface" is the low-order byte of the Class Code, defined in PCI r3.0, Appendix D. Most interface types defined in the spec do not use alpha characters, so they won't be affected. For example, 00h, 01h, 10h, 20h, etc. are unaffected. Print the "interface" byte of the Class Code in uppercase hex, as we already do for the Vendor ID, Device ID, Class, etc. [bhelgaas: changelog] Signed-off-by:
Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> Signed-off-by:
Bjorn Helgaas <bhelgaas@google.com> Acked-by:
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Douglas Lehr authored
commit 9fe373f9 upstream. The Crocodile chip occasionally comes up with 4k and 8k BAR sizes. Due to an erratum, setting the SR-IOV page size causes the physical function BARs to expand to the system page size. Since ppc64 uses 64k pages, when Linux tries to assign the smaller resource sizes to the now 64k BARs the address will be truncated and the BARs will overlap. Force Linux to allocate the resource as a full page, which avoids the overlap. [bhelgaas: print expanded resource, too] Signed-off-by:
Douglas Lehr <dllehr@us.ibm.com> Signed-off-by:
Anton Blanchard <anton@samba.org> Signed-off-by:
Milton Miller <miltonm@us.ibm.com> Signed-off-by:
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Yinghai Lu authored
commit d61b0e87 upstream. In 5b285415 ("PCI: Restrict 64-bit prefetchable bridge windows to 64-bit resources"), we added IORESOURCE_MEM_64 to the mask in pci_assign_unassigned_root_bus_resources(), but not to the mask in pci_assign_unassigned_bridge_resources(). Add IORESOURCE_MEM_64 to the pci_assign_unassigned_bridge_resources() type mask. Fixes: 5b285415 ("PCI: Restrict 64-bit prefetchable bridge windows to 64-bit resources") Signed-off-by:
Yinghai Lu <yinghai@kernel.org> Signed-off-by:
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Thomas Petazzoni authored
commit 56fab6e1 upstream. Geert Uytterhoeven reported a warning when building pci-mvebu: drivers/pci/host/pci-mvebu.c: In function 'mvebu_get_tgt_attr': drivers/pci/host/pci-mvebu.c:887:39: warning: 'rtype' may be used uninitialized in this function [-Wmaybe-uninitialized] if (slot == PCI_SLOT(devfn) && type == rtype) { ^ And indeed, the code of mvebu_get_tgt_attr() may lead to the usage of rtype when being uninitialized, even though it would only happen if we had entries other than I/O space and 32 bits memory space. This commit fixes that by simply skipping the current DT range being considered, if it doesn't match the resource type we're looking for. Reported-by:
Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by:
Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by:
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Andy Shevchenko authored
commit 8e45ef68 upstream. Do full clean up at exit, means terminate all ongoing DMA transfers. Signed-off-by:
Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by:
Mark Brown <broonie@kernel.org> Signed-off-by:
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Oren Givon authored
commit 4f08970f upstream. Add 4 missing PCI IDs for the 7260 series. Signed-off-by:
Oren Givon <oren.givon@intel.com> Signed-off-by:
Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by:
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Emmanuel Grumbach authored
commit 9b60bb6d upstream. The tables still contain dummy values. Signed-off-by:
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Trond Myklebust authored
commit b8fb9c30 upstream. It is OK for pageused == pagecount in the loop, as long as we don't add another entry to the *pages array. Move the test so that it only triggers in that case. Reported-by:
Steve Dickson <SteveD@redhat.com> Fixes: bba5c188 (nfs: disallow duplicate pages in pgio page vectors) Cc: Weston Andros Adamson <dros@primarydata.com> Signed-off-by:
Trond Myklebust <trond.myklebust@primarydata.com> Signed-off-by:
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Trond Myklebust authored
commit 3caa0c6e upstream. SteveD reports the following Oops: RIP: 0010:[<ffffffffa053461d>] [<ffffffffa053461d>] __put_nfs_open_context+0x1d/0x100 [nfs] RSP: 0018:ffff880fed687b90 EFLAGS: 00010286 RAX: 0000000000000024 RBX: 0000000000000000 RCX: 0000000000000006 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff880fed687bc0 R08: 0000000000000092 R09: 000000000000047a R10: 0000000000000000 R11: ffff880fed6878d6 R12: ffff880fed687d20 R13: ffff880fed687d20 R14: 0000000000000070 R15: ffffea000aa33ec0 FS: 00007fce290f0740(0000) GS:ffff8807ffc60000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000070 CR3: 00000007f2e79000 CR4: 00000000000007e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Stack: 0000000000000000 ffff880036c5e510 ffff880fed687d20 ffff880fed687d20 ffff880036c5e200 ffffea000aa33ec0 ffff880fed687bd0 ffffffffa0534710 ffff880fed687be8 ffffffffa053d5f0 ffff880036c5e200 ffff880fed687c08 Call Trace: [<ffffffffa0534710>] put_nfs_open_context+0x10/0x20 [nfs] [<ffffffffa053d5f0>] nfs_pgio_data_destroy+0x20/0x40 [nfs] [<ffffffffa053d672>] nfs_pgio_error+0x22/0x40 [nfs] [<ffffffffa053d8f4>] nfs_generic_pgio+0x74/0x2e0 [nfs] [<ffffffffa06b18c3>] pnfs_generic_pg_writepages+0x63/0x210 [nfsv4] [<ffffffffa053d579>] nfs_pageio_doio+0x19/0x50 [nfs] [<ffffffffa053eb84>] nfs_pageio_complete+0x24/0x30 [nfs] [<ffffffffa053cb25>] nfs_direct_write_schedule_iovec+0x115/0x1f0 [nfs] [<ffffffffa053675f>] ? nfs_get_lock_context+0x4f/0x120 [nfs] [<ffffffffa053d252>] nfs_file_direct_write+0x262/0x420 [nfs] [<ffffffffa0532d91>] nfs_file_write+0x131/0x1d0 [nfs] [<ffffffffa0532c60>] ? nfs_need_sync_write.isra.17+0x40/0x40 [nfs] [<ffffffff812127b8>] do_io_submit+0x3b8/0x840 [<ffffffff81212c50>] SyS_io_submit+0x10/0x20 [<ffffffff81610f29>] system_call_fastpath+0x16/0x1b This is due to the calls to nfs_pgio_error() in nfs_generic_pgio(), which happen before the nfs_pgio_header's open context is referenced in nfs_pgio_rpcsetup(). Reported-by:
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J. Bruce Fields authored
commit f7b43d0c upstream. As of 8c7424cf "nfsd4: don't try to encode conflicting owner if low on space", we permit the server to process a LOCK operation even if there might not be space to return the conflicting lockowner, because we've made returning the conflicting lockowner optional. However, the rpc server still wants to know the most we might possibly return, so we need to take into account the possible conflicting lockowner in the svc_reserve_space() call here. Symptoms were log messages like "RPC request reserved 88 but used 108". Fixes: 8c7424cf "nfsd4: don't try to encode conflicting owner if low on space" Reported-by:
Kinglong Mee <kinglongmee@gmail.com> Signed-off-by:
J. Bruce Fields <bfields@redhat.com> Signed-off-by:
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Andy Adamson authored
commit d1f456b0 upstream. Commit 2f60ea6b ("NFSv4: The NFSv4.0 client must send RENEW calls if it holds a delegation") set the NFS4_RENEW_TIMEOUT flag in nfs4_renew_state, and does not put an nfs41_proc_async_sequence call, the NFSv4.1 lease renewal heartbeat call, on the wire to renew the NFSv4.1 state if the flag was not set. The NFS4_RENEW_TIMEOUT flag is set when "now" is after the last renewal (cl_last_renewal) plus the lease time divided by 3. This is arbitrary and sometimes does the following: In normal operation, the only way a future state renewal call is put on the wire is via a call to nfs4_schedule_state_renewal, which schedules a nfs4_renew_state workqueue task. nfs4_renew_state determines if the NFS4_RENEW_TIMEOUT should be set, and the calls nfs41_proc_async_sequence, which only gets sent if the NFS4_RENEW_TIMEOUT flag is set. Then the nfs41_proc_async_sequence rpc_release function schedules another state remewal via nfs4_schedule_state_renewal. Without this change we can get into a state where an application stops accessing the NFSv4.1 share, state renewal calls stop due to the NFS4_RENEW_TIMEOUT flag _not_ being set. The only way to recover from this situation is with a clientid re-establishment, once the application resumes and the server has timed out the lease and so returns NFS4ERR_BAD_SESSION on the subsequent SEQUENCE operation. An example application: open, lock, write a file. sleep for 6 * lease (could be less) ulock, close. In the above example with NFSv4.1 delegations enabled, without this change, there are no OP_SEQUENCE state renewal calls during the sleep, and the clientid is recovered due to lease expiration on the close. This issue does not occur with NFSv4.1 delegations disabled, nor with NFSv4.0, with or without delegations enabled. Signed-off-by:
Andy Adamson <andros@netapp.com> Link: http://lkml.kernel.org/r/1411486536-23401-1-git-send-email-andros@netapp.com Fixes: 2f60ea6b (NFSv4: The NFSv4.0 client must send RENEW calls...) Signed-off-by:
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Trond Myklebust authored
commit df817ba3 upstream. The current open/lock state recovery unfortunately does not handle errors such as NFS4ERR_CONN_NOT_BOUND_TO_SESSION correctly. Instead of looping, just proceeds as if the state manager is finished recovering. This patch ensures that we loop back, handle higher priority errors and complete the open/lock state recovery. Signed-off-by:
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Trond Myklebust authored
commit a4339b7b upstream. If a NFSv4.x server returns NFS4ERR_STALE_CLIENTID in response to a CREATE_SESSION or SETCLIENTID_CONFIRM in order to tell us that it rebooted a second time, then the client will currently take this to mean that it must declare all locks to be stale, and hence ineligible for reboot recovery. RFC3530 and RFC5661 both suggest that the client should instead rely on the server to respond to inelegible open share, lock and delegation reclaim requests with NFS4ERR_NO_GRACE in this situation. Signed-off-by:
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Frans Klaver authored
commit dc318756 upstream. If the chosen baud rate is large enough (e.g. 3.5 megabaud), the calculated n values in serial_omap_is_baud_mode16() may become 0. This causes a division by zero when calculating the difference between calculated and desired baud rates. To prevent this, cap the n13 and n16 values on 1. Division by zero in kernel. [<c00132e0>] (unwind_backtrace) from [<c00112ec>] (show_stack+0x10/0x14) [<c00112ec>] (show_stack) from [<c01ed7bc>] (Ldiv0+0x8/0x10) [<c01ed7bc>] (Ldiv0) from [<c023805c>] (serial_omap_baud_is_mode16+0x4c/0x68) [<c023805c>] (serial_omap_baud_is_mode16) from [<c02396b4>] (serial_omap_set_termios+0x90/0x8d8) [<c02396b4>] (serial_omap_set_termios) from [<c0230a0c>] (uart_change_speed+0xa4/0xa8) [<c0230a0c>] (uart_change_speed) from [<c0231798>] (uart_set_termios+0xa0/0x1fc) [<c0231798>] (uart_set_termios) from [<c022bb44>] (tty_set_termios+0x248/0x2c0) [<c022bb44>] (tty_set_termios) from [<c022c17c>] (set_termios+0x248/0x29c) [<c022c17c>] (set_termios) from [<c022c3e4>] (tty_mode_ioctl+0x1c8/0x4e8) [<c022c3e4>] (tty_mode_ioctl) from [<c0227e70>] (tty_ioctl+0xa94/0xb18) [<c0227e70>] (tty_ioctl) from [<c00cf45c>] (do_vfs_ioctl+0x4a0/0x560) [<c00cf45c>] (do_vfs_ioctl) from [<c00cf568>] (SyS_ioctl+0x4c/0x74) [<c00cf568>] (SyS_ioctl) from [<c000e480>] (ret_fast_syscall+0x0/0x30) Signed-off-by:
Frans Klaver <frans.klaver@xsens.com> Signed-off-by:
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Willy Tarreau authored
commit 72cf9012 upstream. This fix ensures that we never meet an integer overflow while adding 255 while parsing a variable length encoding. It works differently from commit 206a81c1 ("lzo: properly check for overruns") because instead of ensuring that we don't overrun the input, which is tricky to guarantee due to many assumptions in the code, it simply checks that the cumulated number of 255 read cannot overflow by bounding this number. The MAX_255_COUNT is the maximum number of times we can add 255 to a base count without overflowing an integer. The multiply will overflow when multiplying 255 by more than MAXINT/255. The sum will overflow earlier depending on the base count. Since the base count is taken from a u8 and a few bits, it is safe to assume that it will always be lower than or equal to 2*255, thus we can always prevent any overflow by accepting two less 255 steps. This patch also reduces the CPU overhead and actually increases performance by 1.1% compared to the initial code, while the previous fix costs 3.1% (measured on x86_64). The fix needs to be backported to all currently supported stable kernels. Reported-by:
Willem Pinckaers <willem@lekkertech.net> Cc: "Don A. Bailey" <donb@securitymouse.com> Signed-off-by:
Willy Tarreau <w@1wt.eu> Signed-off-by:
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Willy Tarreau authored
commit af958a38 upstream. This reverts commit 206a81c1 ("lzo: properly check for overruns"). As analysed by Willem Pinckaers, this fix is still incomplete on certain rare corner cases, and it is easier to restart from the original code. Reported-by:
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Willy Tarreau authored
commit d98a0526 upstream. Add a complete description of the LZO format as processed by the decompressor. I have not found a public specification of this format hence this analysis, which will be used to better understand the code. Cc: Willem Pinckaers <willem@lekkertech.net> Cc: "Don A. Bailey" <donb@securitymouse.com> Signed-off-by:
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Olga Kornievskaia authored
commit 8faaa6d5 upstream. Commit c9fdeb28 removed a 'continue' after checking if the lease needs to be renewed. However, if client hasn't moved, the code falls down to starting reboot recovery erroneously (ie., sends open reclaim and gets back stale_clientid error) before recovering from getting stale_clientid on the renew operation. Signed-off-by:
Olga Kornievskaia <kolga@netapp.com> Fixes: c9fdeb28 (NFS: Add basic migration support to state manager thread) Signed-off-by:
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Geert Uytterhoeven authored
commit e4dc601b upstream. hwreg_present() and hwreg_write() temporarily change the VBR register to another vector table. This table contains a valid bus error handler only, all other entries point to arbitrary addresses. If an interrupt comes in while the temporary table is active, the processor will start executing at such an arbitrary address, and the kernel will crash. While most callers run early, before interrupts are enabled, or explicitly disable interrupts, Finn Thain pointed out that macsonic has one callsite that doesn't, causing intermittent boot crashes. There's another unsafe callsite in hilkbd. Fix this for good by disabling and restoring interrupts inside hwreg_present() and hwreg_write(). Explicitly disabling interrupts can be removed from the callsites later. Reported-by:
Finn Thain <fthain@telegraphics.com.au> Signed-off-by:
Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by:
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Alexander Usyskin authored
commit cfda2794 upstream. function 'strncpy' will fill whole buffer 'id.name' of fixed size (32) with string value and will not leave place for NULL-terminator. Possible buffer boundaries violation in following string operations. Replace strncpy with strlcpy. Signed-off-by:
Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by:
Tomas Winkler <tomas.winkler@intel.com> Signed-off-by:
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K. Y. Srinivasan authored
commit b29ef354 upstream. Minimize failures in this function by pre-allocating the buffer for posting messages. The hypercall for posting the message can fail for a number of reasons: 1. Transient resource related issues 2. Buffer alignment 3. Buffer cannot span a page boundry We address issues 2 and 3 by preallocating a per-cpu page for the buffer. Transient resource related failures are handled by retrying by the callers of this function. This patch is based on the investigation done by Dexuan Cui <decui@microsoft.com>. I would like to thank Sitsofe Wheeler <sitsofe@yahoo.com> for reporting the issue and helping in debuggging. Signed-off-by:
K. Y. Srinivasan <kys@microsoft.com> Reported-by:
Sitsofe Wheeler <sitsofe@yahoo.com> Tested-by:
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K. Y. Srinivasan authored
commit 45d727ce upstream. Fix a bug in vmbus_open() and properly propagate the error. I would like to thank Dexuan Cui <decui@microsoft.com> for identifying the issue. Signed-off-by:
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K. Y. Srinivasan authored
commit 72c6b71c upstream. Eliminate the call to BUG_ON() by waiting for the host to respond. We are trying to reclaim the ownership of memory that was given to the host and so we will have to wait until the host responds. Signed-off-by:
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K. Y. Srinivasan authored
commit 98d731bb upstream. Eliminate calls to BUG_ON() in vmbus_close_internal(). We have chosen to potentially leak memory, than crash the guest in case of failures. In this version of the patch I have addressed comments from Dan Carpenter (dan.carpenter@oracle.com). Signed-off-by:
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K. Y. Srinivasan authored
commit 66be6530 upstream. Eliminate calls to BUG_ON() by properly handling errors. In cases where rollback is possible, we will return the appropriate error to have the calling code decide how to rollback state. In the case where we are transferring ownership of the guest physical pages to the host, we will wait for the host to respond. Signed-off-by:
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K. Y. Srinivasan authored
commit fdeebcc6 upstream. Posting messages to the host can fail because of transient resource related failures. Correctly deal with these failures and increase the number of attempts to post the message before giving up. In this version of the patch, I have normalized the error code to Linux error code. Signed-off-by:
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K. Y. Srinivasan authored
commit bc5a5b02 upstream. Properly pack the data for file copy functionality. Patch based on investigation done by Matej Muzila <mmuzila@redhat.com> Signed-off-by:
Jason Wang <jasowang@redhat.com> Signed-off-by:
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Will Deacon authored
commit 1059c6bf upstream. When returning from a debug exception taken from EL1, we unmask debug exceptions after handling the exception. This is crucial for debug exceptions taken from EL0, so that any kernel work on the ret_to_user path can be debugged by kgdb. However, when returning back to EL1 the only thing left to do is to restore the original register state before the exception return. If single-step has been enabled by the debug exception handler, we will get stuck in an infinite debug exception loop, since we will take the step exception as soon as we unmask debug exceptions. This patch avoids unmasking debug exceptions on the debug exception return path when the exception was taken from EL1. Fixes: 2a283070 (arm64: debug: avoid accessing mdscr_el1 on fault paths where possible) Reported-by:
David Long <dave.long@linaro.org> Reported-by:
AKASHI Takahiro <takahiro.akashi@linaro.org> Signed-off-by:
Will Deacon <will.deacon@arm.com> Signed-off-by:
Catalin Marinas <catalin.marinas@arm.com> Signed-off-by:
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Kees Cook authored
commit 471b095d upstream. An empty firmware request name will trigger warnings when building device names. Make sure this is caught earlier and rejected. The warning was visible via the test_firmware.ko module interface: echo -ne "\x00" > /sys/devices/virtual/misc/test_firmware/trigger_request Reported-by:
Sasha Levin <sasha.levin@oracle.com> Signed-off-by:
Kees Cook <keescook@chromium.org> Tested-by:
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Xuelin Shi authored
commit 87cea763 upstream. the partial xor result must be kept until the next tx is generated. Signed-off-by:
Xuelin Shi <xuelin.shi@freescale.com> Signed-off-by:
Dan Williams <dan.j.williams@intel.com> Signed-off-by:
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Joe Lawrence authored
commit db7157d4 upstream. Once calling scsi_host_put, be careful to not access qla_hw_data through the Scsi_Host private data (ie, scsi_qla_host base_vha). Fixes: fe1b806f ("qla2xxx: Refactor shutdown code so some functionality can be reused") Signed-off-by:
Joe Lawrence <joe.lawrence@stratus.com> Acked-by:
Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
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Arun Easi authored
commit 75554b68 upstream. Signed-off-by:
Arun Easi <arun.easi@qlogic.com> Signed-off-by:
Saurav Kashyap <saurav.kashyap@qlogic.com> Signed-off-by:
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Himanshu Madhani authored
commit 78c2106a upstream. This patch is to fix regression added by commit id 51a07f84. When allocating memory for new session original patch does not assign vha to op->vha resulting into NULL pointer access during qlt_create_sess_from_atio(). Signed-off-by:
Himanshu Madhani <himanshu.madhani@qlogic.com> Signed-off-by:
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Steffen Trumtrar authored
commit c5bb725a upstream. VCCR is used as a trigger to start voltage transitions, so we need to mark it volatile in order to make sure it gets written to hardware every time we set a new voltage. Fixes regulator voltage being stuck at the first voltage set after driver load. [lst: reworded commit message] Signed-off-by:
Steffen Trumtrar <s.trumtrar@pengutronix.de> Signed-off-by:
Lucas Stach <l.stach@pengutronix.de> Signed-off-by:
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Chris J Arges authored
commit 4089b71c upstream. When using a virtual SCSI disk in a VMWare VM if blkdev_issue_zeroout is used data can be improperly zeroed out using the mptfusion driver. This patch disables write_same for this driver and the vmware subsystem_vendor which ensures that manual zeroing out is used instead. BugLink: http://bugs.launchpad.net/bugs/1371591Reported-by:
Bruce Lucas <bruce.lucas@mongodb.com> Tested-by:
Chris J Arges <chris.j.arges@canonical.com> Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by:
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Mike Christie authored
commit a41a9ad3 upstream. Dan Carpenter found a issue where be2iscsi would copy the ip from userspace to the driver buffer before checking the len of the data being copied: http://marc.info/?l=linux-scsi&m=140982651504251&w=2 This patch just has us only copy what we the driver buffer can support. Tested-by:
John Soni Jose <sony.john-n@emulex.com> Signed-off-by:
Mike Christie <michaelc@cs.wisc.edu> Signed-off-by:
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Xiubo Li authored
commit d6b41cb0 upstream. Since we cannot make sure the 'val_count' will always be none zero here, and then if it equals to zero, the kmemdup() will return ZERO_SIZE_PTR, which equals to ((void *)16). So this patch fix this with just doing the zero check before calling kmemdup(). Signed-off-by:
Xiubo Li <Li.Xiubo@freescale.com> Signed-off-by:
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