- 05 Jun, 2017 40 commits
-
-
Mimi Zohar authored
commit a4e3b8d7 upstream. Dot prefixed keyring names are supposed to be reserved for the kernel, but add_key() calls key_get_type_from_user(), which incorrectly verifies the 'type' field, not the 'description' field. This patch verifies the 'description' field isn't dot prefixed, when creating a new keyring, and removes the dot prefix test in key_get_type_from_user(). Changelog v6: - whitespace and other cleanup Changelog v5: - Only prevent userspace from creating a dot prefixed keyring, not regular keys - Dmitry Reported-by:
Dmitry Kasatkin <d.kasatkin@samsung.com> Signed-off-by:
Mimi Zohar <zohar@linux.vnet.ibm.com> Acked-by:
David Howells <dhowells@redhat.com> [bwh: Backported to 3.2: adjust context, indentation] Signed-off-by:
Ben Hutchings <ben@decadent.org.uk>
-
Johan Hovold authored
commit b7321e81 upstream. Make sure to check for the required interrupt-in endpoint to avoid dereferencing a NULL-pointer should a malicious device lack such an endpoint. Note that a fairly recent change purported to fix this issue, but added an insufficient test on the number of endpoints only, a test which can now be removed. Fixes: 4ec0ef3a ("USB: iowarrior: fix oops with malicious USB descriptors") Fixes: 946b960d ("USB: add driver for iowarrior devices.") Signed-off-by:
Johan Hovold <johan@kernel.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> [bwh: Backported to 3.2: adjust context] Signed-off-by:
-
Takashi Iwai authored
commit f3ac9f73 upstream. The sequencer FIFO management has a bug that may lead to a corruption (shortage) of the cell linked list. When a sequencer client faces an error at the event delivery, it tries to put back the dequeued cell. When the first queue was put back, this forgot the tail pointer tracking, and the link will be screwed up. Although there is no memory corruption, the sequencer client may stall forever at exit while flushing the pending FIFO cells in snd_seq_pool_done(), as spotted by syzkaller. This patch addresses the missing tail pointer tracking at snd_seq_fifo_cell_putback(). Also the patch makes sure to clear the cell->enxt pointer at snd_seq_fifo_event_in() for avoiding a similar mess-up of the FIFO linked list. Reported-by:
Dmitry Vyukov <dvyukov@google.com> Signed-off-by:
Takashi Iwai <tiwai@suse.de> Signed-off-by:
-
Takashi Iwai authored
commit 15c75b09 upstream. Currently ctxfi driver tries to set only the 64bit DMA mask on 64bit architectures, and bails out if it fails. This causes a problem on some platforms since the 64bit DMA isn't always guaranteed. We should fall back to the default 32bit DMA when 64bit DMA fails. Fixes: 6d74b86d ("ALSA: ctxfi - Allow 64bit DMA") Signed-off-by:
-
Takashi Iwai authored
commit 71321eb3 upstream. When a user sets a too small ticks with a fine-grained timer like hrtimer, the kernel tries to fire up the timer irq too frequently. This may lead to the condensed locks, eventually the kernel spinlock lockup with warnings. For avoiding such a situation, we define a lower limit of the resolution, namely 1ms. When the user passes a too small tick value that results in less than that, the kernel returns -EINVAL now. Reported-by:
-
Roman Mashak authored
commit edb9d1bf upstream. When tc actions are loaded as a module and no actions have been installed, flushing them would result in actions removed from the memory, but modules reference count not being decremented, so that the modules would not be unloaded. Following is example with GACT action: % sudo modprobe act_gact % lsmod Module Size Used by act_gact 16384 0 % % sudo tc actions ls action gact % % sudo tc actions flush action gact % lsmod Module Size Used by act_gact 16384 1 % sudo tc actions flush action gact % lsmod Module Size Used by act_gact 16384 2 % sudo rmmod act_gact rmmod: ERROR: Module act_gact is in use .... After the fix: % lsmod Module Size Used by act_gact 16384 0 % % sudo tc actions add action pass index 1 % sudo tc actions add action pass index 2 % sudo tc actions add action pass index 3 % lsmod Module Size Used by act_gact 16384 3 % % sudo tc actions flush action gact % lsmod Module Size Used by act_gact 16384 0 % % sudo tc actions flush action gact % lsmod Module Size Used by act_gact 16384 0 % sudo rmmod act_gact % lsmod Module Size Used by % Fixes: f97017cd ("net-sched: Fix actions flushing") Signed-off-by:
Roman Mashak <mrv@mojatatu.com> Signed-off-by:
Jamal Hadi Salim <jhs@mojatatu.com> Acked-by:
Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net> [bwh: Backported to 3.2: adjust context] Signed-off-by:
-
Weston Andros Adamson authored
commit ed92d8c1 upstream. We're not taking into account that the space needed for the (variable length) attr bitmap, with the result that we'd sometimes get a spurious ERANGE when the ACL data got close to the end of a page. Just add in an extra page to make sure. Signed-off-by:
Weston Andros Adamson <dros@primarydata.com> Signed-off-by:
J. Bruce Fields <bfields@redhat.com> Signed-off-by:
Anna Schumaker <Anna.Schumaker@Netapp.com> [bwh: Backported to 3.2: adjust context] Signed-off-by:
-
Trond Myklebust authored
commit 21f498c2 upstream. Ensure that the user supplied buffer size doesn't cause us to overflow the 'pages' array. Also fix up some confusion between the use of PAGE_SIZE and PAGE_CACHE_SIZE when calculating buffer sizes. We're not using the page cache for anything here. Signed-off-by:
Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by:
-
Raghava Aditya Renukunta authored
commit c421530b upstream. The driver currently checks the SELF_TEST_FAILED first and then KERNEL_PANIC next. Under error conditions(boot code failure) both SELF_TEST_FAILED and KERNEL_PANIC can be set at the same time. The driver has the capability to reset the controller on an KERNEL_PANIC, but not on SELF_TEST_FAILED. Fixed by first checking KERNEL_PANIC and then the others. Fixes: e8b12f0f ([SCSI] aacraid: Add new code for PMC-Sierra's SRC base controller family) Signed-off-by:
Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com> Reviewed-by:
David Carroll <David.Carroll@microsemi.com> Reviewed-by:
Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by:
-
Raghava Aditya Renukunta authored
commit 1bff5abc upstream. aac_fib_map_free frees misaligned fib dma memory, additionally it does not free up the whole memory. Fixed by changing the code to free up the correct and full memory allocation. Fixes: e8b12f0f ([SCSI] aacraid: Add new code for PMC-Sierra's SRC based controller family) Signed-off-by:
-
Andrey Ryabinin authored
commit ec7cb62d upstream. DCCP doesn't purge timewait sockets on network namespace shutdown. So, after net namespace destroyed we could still have an active timer which will trigger use after free in tw_timer_handler(): BUG: KASAN: use-after-free in tw_timer_handler+0x4a/0xa0 at addr ffff88010e0d1e10 Read of size 8 by task swapper/1/0 Call Trace: __asan_load8+0x54/0x90 tw_timer_handler+0x4a/0xa0 call_timer_fn+0x127/0x480 expire_timers+0x1db/0x2e0 run_timer_softirq+0x12f/0x2a0 __do_softirq+0x105/0x5b4 irq_exit+0xdd/0xf0 smp_apic_timer_interrupt+0x57/0x70 apic_timer_interrupt+0x90/0xa0 Object at ffff88010e0d1bc0, in cache net_namespace size: 6848 Allocated: save_stack_trace+0x1b/0x20 kasan_kmalloc+0xee/0x180 kasan_slab_alloc+0x12/0x20 kmem_cache_alloc+0x134/0x310 copy_net_ns+0x8d/0x280 create_new_namespaces+0x23f/0x340 unshare_nsproxy_namespaces+0x75/0xf0 SyS_unshare+0x299/0x4f0 entry_SYSCALL_64_fastpath+0x18/0xad Freed: save_stack_trace+0x1b/0x20 kasan_slab_free+0xae/0x180 kmem_cache_free+0xb4/0x350 net_drop_ns+0x3f/0x50 cleanup_net+0x3df/0x450 process_one_work+0x419/0xbb0 worker_thread+0x92/0x850 kthread+0x192/0x1e0 ret_from_fork+0x2e/0x40 Add .exit_batch hook to dccp_v4_ops()/dccp_v6_ops() which will purge timewait sockets on net namespace destruction and prevent above issue. Fixes: f2bf415c ("mib: add net to NET_ADD_STATS_BH") Reported-by:
Andrey Ryabinin <aryabinin@virtuozzo.com> Acked-by:
Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by:
-
Steve Wise authored
commit f2625f7d upstream. cma_accept_iw() needs to return an error if conn_params is NULL. Since this is coming from user space, we can crash. Reported-by:
Shaobo He <shaobo@cs.utah.edu> Acked-by:
Sean Hefty <sean.hefty@intel.com> Signed-off-by:
Steve Wise <swise@opengridcomputing.com> Signed-off-by:
Doug Ledford <dledford@redhat.com> Signed-off-by:
-
Miklos Szeredi authored
commit 2e38bea9 upstream. fuse_file_put() was missing the "force" flag for the RELEASE request when sending synchronously (fuseblk). If this flag is not set, then a sync request may be interrupted before it is dequeued by the userspace filesystem. In this case the OPEN won't be balanced with a RELEASE. Signed-off-by:
Miklos Szeredi <mszeredi@redhat.com> Fixes: 5a18ec17 ("fuse: fix hang of single threaded fuseblk filesystem") [bwh: Backported to 3.2: - "force" flag is a bitfield - Adjust context] Signed-off-by:
-
Trond Myklebust authored
commit 5a1f6d9e upstream. Account for the "space_limit" field in struct open_write_delegation4. Fixes: 2cebf828 ("NFSv4: Fix the underestimate of NFSv4 open request size") Signed-off-by:
Trond Myklebust <trond.myklebust@primarydata.com> Reviewed-by:
Chuck Lever <chuck.lever@oracle.com> Signed-off-by:
-
Christoph Hellwig authored
commit 783112f7 upstream. Both the NFS protocols and the Linux VFS use a setattr operation with a bitmap of attributes to set to set various file attributes including the file size and the uid/gid. The Linux syscalls never mix size updates with unrelated updates like the uid/gid, and some file systems like XFS and GFS2 rely on the fact that truncates don't update random other attributes, and many other file systems handle the case but do not update the other attributes in the same transaction. NFSD on the other hand passes the attributes it gets on the wire more or less directly through to the VFS, leading to updates the file systems don't expect. XFS at least has an assert on the allowed attributes, which caught an unusual NFS client setting the size and group at the same time. To handle this issue properly this splits the notify_change call in nfsd_setattr into two separate ones. Signed-off-by:
Christoph Hellwig <hch@lst.de> Tested-by:
-
Christoph Hellwig authored
commit 758e99fe upstream. Simplify exit paths, size_change use. Signed-off-by:
-
Christoph Hellwig authored
commit f0c63124 upstream. This fixes a failure in xfstests generic/313 because nfs doesn't update mtime on a truncate. The protocol requires this to be done implicity for a size changing setattr. Signed-off-by:
-
Arnd Bergmann authored
commit b6176494 upstream. One of the last remaining failures in kernelci.org is for a gcc bug: drivers/net/ethernet/qlogic/qlge/qlge_main.c:4819:1: error: insn does not satisfy its constraints: drivers/net/ethernet/qlogic/qlge/qlge_main.c:4819:1: internal compiler error: in extract_constrain_insn, at recog.c:2190 This is apparently broken in gcc-6 but fixed in gcc-7, and I cannot reproduce the problem here. However, it is clear that ip27_defconfig does not actually need this driver as the platform has only PCI-X but not PCIe, and the qlge adapter in turn is PCIe-only. The driver was originally enabled in 2010 along with lots of other drivers. Fixes: 59d302b3 ("MIPS: IP27: Make defconfig useful again.") Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/15197/Signed-off-by:
James Hogan <james.hogan@imgtec.com> Signed-off-by:
-
James Cowgill authored
commit 884b4269 upstream. If copy_from_user is called with a large buffer (>= 128 bytes) and the userspace buffer refers partially to unreadable memory, then it is possible for Octeon's copy_from_user to report the wrong number of bytes have been copied. In the case where the buffer size is an exact multiple of 128 and the fault occurs in the last 64 bytes, copy_from_user will report that all the bytes were copied successfully but leave some garbage in the destination buffer. The bug is in the main __copy_user_common loop in octeon-memcpy.S where in the middle of the loop, src and dst are incremented by 128 bytes. The l_exc_copy fault handler is used after this but that assumes that "src < THREAD_BUADDR($28)". This is not the case if src has already been incremented. Fix by adding an extra fault handler which rewinds the src and dst pointers 128 bytes before falling though to l_exc_copy. Thanks to the pwritev test from the strace test suite for originally highlighting this bug! Fixes: 5b3b1688 ("MIPS: Add Cavium OCTEON processor support ...") Signed-off-by:
James Cowgill <James.Cowgill@imgtec.com> Acked-by:
David Daney <david.daney@cavium.com> Reviewed-by:
-
Ralf Baechle authored
commit 66fd848c upstream. For certain arguments such as saddr = 0xc0a8fd60, daddr = 0xc0a8fda1, len = 80, proto = 17, sum = 0x7eae049d there will be a carry when folding the intermediate 64 bit checksum to 32 bit but the code doesn't add the carry back to the one's complement sum, thus an incorrect result will be generated. Reported-by:
Mark Zhang <bomb.zhang@gmail.com> Signed-off-by:
Ralf Baechle <ralf@linux-mips.org> Reviewed-by:
-
Dmitry Tunin authored
commit 441ad62d upstream. T: Bus=01 Lev=01 Prnt=01 Port=07 Cnt=04 Dev#= 5 Spd=12 MxCh= 0 D: Ver= 1.10 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=04ca ProdID=3018 Rev=00.01 C: #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA I: If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb I: If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb Signed-off-by:
Dmitry Tunin <hanipouspilot@gmail.com> Signed-off-by:
Marcel Holtmann <marcel@holtmann.org> Signed-off-by:
-
Ravi Bangoria authored
commit c21a493a upstream. Currently xmon data-breakpoint feature is broken. Whenever there is a watchpoint match occurs, hw_breakpoint_handler will be called by do_break via notifier chains mechanism. If watchpoint is registered by xmon, hw_breakpoint_handler won't find any associated perf_event and returns immediately with NOTIFY_STOP. Similarly, do_break also returns without notifying to xmon. Solve this by returning NOTIFY_DONE when hw_breakpoint_handler does not find any perf_event associated with matched watchpoint, rather than NOTIFY_STOP, which tells the core code to continue calling the other breakpoint handlers including the xmon one. Signed-off-by:
Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com> Signed-off-by:
Michael Ellerman <mpe@ellerman.id.au> [bwh: Backported to 3.2: adjust context] Signed-off-by:
-
Trond Myklebust authored
commit 251af29c upstream. It is not sufficient to just check that the lock pids match when granting a callback, we also need to ensure that we're granting the callback on the right file. Reported-by:
Pankaj Singh <psingh.ait@gmail.com> Fixes: 1da177e4 ("Linux-2.6.12-rc2") Signed-off-by:
-
NeilBrown authored
commit 9356863c upstream. Commit: cbd19983 ("md: Fix unfortunate interaction with evms") change mddev_put() so that it would not destroy an md device while ->ctime was non-zero. Unfortunately, we didn't make sure to clear ->ctime when unloading the module, so it is possible for an md device to remain after module unload. An attempt to open such a device will trigger an invalid memory reference in: get_gendisk -> kobj_lookup -> exact_lock -> get_disk when tring to access disk->fops, which was in the module that has been removed. So ensure we clear ->ctime in md_exit(), and explain how that is useful, as it isn't immediately obvious when looking at the code. Fixes: cbd19983 ("md: Fix unfortunate interaction with evms") Tested-by:
Guoqing Jiang <gqjiang@suse.com> Signed-off-by:
NeilBrown <neilb@suse.com> Signed-off-by:
Shaohua Li <shli@fb.com> Signed-off-by:
-
colyli@suse.de authored
commit 03a9e24e upstream. Recently I receive a bug report that on Linux v3.0 based kerenl, hot add disk to a md linear device causes kernel crash at linear_congested(). From the crash image analysis, I find in linear_congested(), mddev->raid_disks contains value N, but conf->disks[] only has N-1 pointers available. Then a NULL pointer deference crashes the kernel. There is a race between linear_add() and linear_congested(), RCU stuffs used in these two functions cannot avoid the race. Since Linuv v4.0 RCU code is replaced by introducing mddev_suspend(). After checking the upstream code, it seems linear_congested() is not called in generic_make_request() code patch, so mddev_suspend() cannot provent it from being called. The possible race still exists. Here I explain how the race still exists in current code. For a machine has many CPUs, on one CPU, linear_add() is called to add a hard disk to a md linear device; at the same time on other CPU, linear_congested() is called to detect whether this md linear device is congested before issuing an I/O request onto it. Now I use a possible code execution time sequence to demo how the possible race happens, seq linear_add() linear_congested() 0 conf=mddev->private 1 oldconf=mddev->private 2 mddev->raid_disks++ 3 for (i=0; i<mddev->raid_disks;i++) 4 bdev_get_queue(conf->disks[i].rdev->bdev) 5 mddev->private=newconf In linear_add() mddev->raid_disks is increased in time seq 2, and on another CPU in linear_congested() the for-loop iterates conf->disks[i] by the increased mddev->raid_disks in time seq 3,4. But conf with one more element (which is a pointer to struct dev_info type) to conf->disks[] is not updated yet, accessing its structure member in time seq 4 will cause a NULL pointer deference fault. To fix this race, there are 2 parts of modification in the patch, 1) Add 'int raid_disks' in struct linear_conf, as a copy of mddev->raid_disks. It is initialized in linear_conf(), always being consistent with pointers number of 'struct dev_info disks[]'. When iterating conf->disks[] in linear_congested(), use conf->raid_disks to replace mddev->raid_disks in the for-loop, then NULL pointer deference will not happen again. 2) RCU stuffs are back again, and use kfree_rcu() in linear_add() to free oldconf memory. Because oldconf may be referenced as mddev->private in linear_congested(), kfree_rcu() makes sure that its memory will not be released until no one uses it any more. Also some code comments are added in this patch, to make this modification to be easier understandable. This patch can be applied for kernels since v4.0 after commit: 3be260cc ("md/linear: remove rcu protections in favour of suspend/resume"). But this bug is reported on Linux v3.0 based kernel, for people who maintain kernels before Linux v4.0, they need to do some back back port to this patch. Changelog: - V3: add 'int raid_disks' in struct linear_conf, and use kfree_rcu() to replace rcu_call() in linear_add(). - v2: add RCU stuffs by suggestion from Shaohua and Neil. - v1: initial effort. Signed-off-by:
Coly Li <colyli@suse.de> Cc: Shaohua Li <shli@fb.com> Cc: Neil Brown <neilb@suse.com> Signed-off-by:
-
Ravikumar Kattekola authored
commit a53210f5 upstream. Fixes: a45c6cb8 ("[ARM] 5369/1: omap mmc: Add new omap hsmmc controller for 2430 and 34xx, v3") when using really large timeout (up to 4*60*1000 ms for bkops) there is a possibility of data overflow using unsigned int so use 64 bit unsigned long long. Signed-off-by:
Ravikumar Kattekola <rk@ti.com> Signed-off-by:
Sekhar Nori <nsekhar@ti.com> Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org> [bwh: Backported to 3.2: - Drop change in omap_hsmmc_prepare_data() - Adjust context] Signed-off-by:
-
K. Y. Srinivasan authored
commit 372b1e91 upstream. The hypercall page only needs to be executable but currently it is setup to be writable as well. Fix the issue. Signed-off-by:
K. Y. Srinivasan <kys@microsoft.com> Acked-by:
Kees Cook <keescook@chromium.org> Reported-by:
Stephen Hemminger <stephen@networkplumber.org> Tested-by:
-
Dan Carpenter authored
commit 57cb17e7 upstream. This function has two callers and neither are able to handle a NULL return. Really, -EINVAL is the correct thing return here anyway. This fixes some static checker warnings like: security/keys/encrypted-keys/encrypted.c:709 encrypted_key_decrypt() error: uninitialized symbol 'master_key'. Fixes: 7e70cb49 ("keys: add new key-type encrypted") Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Acked-by:
James Morris <james.l.morris@oracle.com> Signed-off-by:
-
Johan Hovold authored
commit 5182c2cf upstream. Fix another NULL-pointer dereference at open should a malicious device lack an interrupt-in endpoint. Note that the driver has a broken check for an interrupt-in endpoint which means that an interrupt URB has never even been submitted. Fixes: 3f542974 ("USB: Moschip 7840 USB-Serial Driver") Reviewed-by:
-
Johan Hovold authored
commit a6bb1e17 upstream. FTDI devices use a receive latency timer to periodically empty the receive buffer and report modem and line status (also when the buffer is empty). When a break or error condition is detected the corresponding status flags will be set on a packet with nonzero data payload and the flags are not updated until the break is over or further characters are received. In order to avoid over-reporting break and error conditions, these flags must therefore only be processed for packets with payload. This specifically fixes the case where after an overrun, the error condition is continuously reported and NULL-characters inserted until further data is received. Reported-by:
Michael Walle <michael@walle.cc> Fixes: 72fda3ca ("USB: serial: ftd_sio: implement sysrq handling on break") Fixes: 166ceb69 ("USB: ftdi_sio: clean up line-status handling") Signed-off-by:
-
Ken Lin authored
commit 9a593656 upstream. Add new USB IDs for cp2104/5 devices on Bx50v3 boards due to the design change. Signed-off-by:
Ken Lin <yungching0725@gmail.com> Signed-off-by:
-
Ian Abbott authored
commit 1c9c858e upstream. The MKS Instruments SCOM-0800 and SCOM-0801 cards (originally by Tenta Technologies) are 3U CompactPCI serial cards with 4 and 8 serial ports, respectively. The first 4 ports are implemented by an OX16PCI954 chip, and the second 4 ports are implemented by an OX16C954 chip on a local bus, bridged by the second PCI function of the OX16PCI954. The ports are jumper-selectable as RS-232 and RS-422/485, and the UARTs use a non-standard oscillator frequency of 20 MHz (base_baud = 1250000). Signed-off-by:
Ian Abbott <abbotti@mev.co.uk> Signed-off-by:
-
Theodore Ts'o authored
commit 97abd7d4 upstream. If the journal is aborted, the needs_recovery feature flag should not be removed. Otherwise, it's the journal might not get replayed and this could lead to more data getting lost. Signed-off-by:
Theodore Ts'o <tytso@mit.edu> [bwh: Backported to 3.2: adjust context] Signed-off-by:
-
Theodore Ts'o authored
commit e112666b upstream. If the journal has been aborted, we shouldn't mark the underlying buffer head as dirty, since that will cause the metadata block to get modified. And if the journal has been aborted, we shouldn't allow this since it will almost certainly lead to a corrupted file system. Signed-off-by:
-
Nikola Pajkovsky authored
commit 68dee8e2 upstream. commit 8fd524b3 ("x86: Kill bad_dma_address variable") has killed bad_dma_address variable and used instead of macro DMA_ERROR_CODE which is always zero. Since dma_addr is unsigned, the statement dma_addr >= DMA_ERROR_CODE is always true, and not needed. arch/x86/kernel/pci-calgary_64.c: In function ‘iommu_free’: arch/x86/kernel/pci-calgary_64.c:299:2: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] if (unlikely((dma_addr >= DMA_ERROR_CODE) && (dma_addr < badend))) { Fixes: 8fd524b3 ("x86: Kill bad_dma_address variable") Signed-off-by:
Nikola Pajkovsky <npajkovsky@suse.cz> Cc: iommu@lists.linux-foundation.org Cc: Jon Mason <jdmason@kudzu.us> Cc: Muli Ben-Yehuda <mulix@mulix.org> Link: http://lkml.kernel.org/r/7612c0f9dd7c1290407dbf8e809def922006920b.1479161177.git.npajkovsky@suse.czSigned-off-by:
Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
-
Julian Wiedmann authored
commit 1e4a382f upstream. For devices with multiple input queues, tiqdio_call_inq_handlers() iterates over all input queues and clears the device's DSCI during each iteration. If the DSCI is re-armed during one of the later iterations, we therefore do not scan the previous queues again. The re-arming also raises a new adapter interrupt. But its handler does not trigger a rescan for the device, as the DSCI has already been erroneously cleared. This can result in queue stalls on devices with multiple input queues. Fix it by clearing the DSCI just once, prior to scanning the queues. As the code is moved in front of the loop, we also need to access the DSCI directly (ie irq->dsci) instead of going via each queue's parent pointer to the same irq. This is not a functional change, and a follow-up patch will clean up the other users. In practice, this bug only affects CQ-enabled HiperSockets devices, ie. devices with sysfs-attribute "hsuid" set. Setting a hsuid is needed for AF_IUCV socket applications that use HiperSockets communication. Fixes: 104ea556 ("qdio: support asynchronous delivery of storage blocks") Reviewed-by:
Ursula Braun <ubraun@linux.vnet.ibm.com> Signed-off-by:
Julian Wiedmann <jwi@linux.vnet.ibm.com> Signed-off-by:
Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by:
-
Johan Hovold authored
commit c528fcb1 upstream. Make sure to check for short transfers before parsing the receive buffer to avoid acting on stale data. Fixes: 1da177e4 ("Linux-2.6.12-rc2") Reviewed-by:
-
Johan Hovold authored
commit 1b0aed2b upstream. Make sure the received data has the required headers before parsing it. Also drop the redundant urb-status check, which has already been handled by the caller. Fixes: 1da177e4 ("Linux-2.6.12-rc2") Reviewed-by:
-
Johan Hovold authored
commit 2f682146 upstream. A recent change claimed to fix an off-by-one error in the OOB-port completion handler, but instead introduced such an error. This could specifically led to modem-status changes going unnoticed, effectively breaking TIOCMGET. Note that the offending commit fixes a loop-condition underflow and is marked for stable, but should not be backported without this fix. Reported-by:
-
Johan Hovold authored
commit 2d380889 upstream. Make sure to check for short transfers to avoid underflow in a loop condition when parsing the receive buffer. Also fix an off-by-one error in the incomplete sanity check which could lead to invalid data being parsed. Fixes: 8c209e67 ("USB: make actual_length in struct urb field u32") Fixes: 1da177e4 ("Linux-2.6.12-rc2") Reviewed-by:
-
