- 16 Mar, 2015 11 commits
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Minh Duc Tran authored
fixed invalid assignment of 64bit mask to host dma_boundary for scatter gather segment boundary limit. commit f76a610a upstream. In reference to bug https://bugzilla.redhat.com/show_bug.cgi?id=1097141 Assert is seen with AMD cpu whenever calling pci_alloc_consistent. [ 29.406183] ------------[ cut here ]------------ [ 29.410505] kernel BUG at lib/iommu-helper.c:13! Signed-off-by:
Minh Tran <minh.tran@emulex.com> Fixes: 6733b39aSigned-off-by:
James Bottomley <JBottomley@Parallels.com> Signed-off-by:
Jiri Slaby <jslaby@suse.cz>
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Peter Ujfalusi authored
commit d51199a8 upstream. DMA_BIT_MASK of 64 is not valid dma address mask for OMAPs, it should be set to 32. The 64 was introduced by commit (in 2009): a152ff24 ASoC: OMAP: Make DMA 64 aligned But the dma_mask and coherent_dma_mask can not be used to specify alignment. Fixes: a152ff24 (ASoC: OMAP: Make DMA 64 aligned) Reported-by:
Grygorii Strashko <Grygorii.Strashko@linaro.org> Signed-off-by:
Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by:
Mark Brown <broonie@kernel.org> Signed-off-by:
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Ryusuke Konishi authored
commit 957ed60b upstream. Each inode of nilfs2 stores a root node of a b-tree, and it turned out to have a memory overrun issue: Each b-tree node of nilfs2 stores a set of key-value pairs and the number of them (in "bn_nchildren" member of nilfs_btree_node struct), as well as a few other "bn_*" members. Since the value of "bn_nchildren" is used for operations on the key-values within the b-tree node, it can cause memory access overrun if a large number is incorrectly set to "bn_nchildren". For instance, nilfs_btree_node_lookup() function determines the range of binary search with it, and too large "bn_nchildren" leads nilfs_btree_node_get_key() in that function to overrun. As for intermediate b-tree nodes, this is prevented by a sanity check performed when each node is read from a drive, however, no sanity check has been done for root nodes stored in inodes. This patch fixes the issue by adding missing sanity check against b-tree root nodes so that it's called when on-memory inodes are read from ifile, inode metadata file. Signed-off-by:
Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by:
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Naoya Horiguchi authored
commit e66f17ff upstream. We have a race condition between move_pages() and freeing hugepages, where move_pages() calls follow_page(FOLL_GET) for hugepages internally and tries to get its refcount without preventing concurrent freeing. This race crashes the kernel, so this patch fixes it by moving FOLL_GET code for hugepages into follow_huge_pmd() with taking the page table lock. This patch intentionally removes page==NULL check after pte_page. This is justified because pte_page() never returns NULL for any architectures or configurations. This patch changes the behavior of follow_huge_pmd() for tail pages and then tail pages can be pinned/returned. So the caller must be changed to properly handle the returned tail pages. We could have a choice to add the similar locking to follow_huge_(addr|pud) for consistency, but it's not necessary because currently these functions don't support FOLL_GET flag, so let's leave it for future development. Here is the reproducer: $ cat movepages.c #include <stdio.h> #include <stdlib.h> #include <numaif.h> #define ADDR_INPUT 0x700000000000UL #define HPS 0x200000 #define PS 0x1000 int main(int argc, char *argv[]) { int i; int nr_hp = strtol(argv[1], NULL, 0); int nr_p = nr_hp * HPS / PS; int ret; void **addrs; int *status; int *nodes; pid_t pid; pid = strtol(argv[2], NULL, 0); addrs = malloc(sizeof(char *) * nr_p + 1); status = malloc(sizeof(char *) * nr_p + 1); nodes = malloc(sizeof(char *) * nr_p + 1); while (1) { for (i = 0; i < nr_p; i++) { addrs[i] = (void *)ADDR_INPUT + i * PS; nodes[i] = 1; status[i] = 0; } ret = numa_move_pages(pid, nr_p, addrs, nodes, status, MPOL_MF_MOVE_ALL); if (ret == -1) err("move_pages"); for (i = 0; i < nr_p; i++) { addrs[i] = (void *)ADDR_INPUT + i * PS; nodes[i] = 0; status[i] = 0; } ret = numa_move_pages(pid, nr_p, addrs, nodes, status, MPOL_MF_MOVE_ALL); if (ret == -1) err("move_pages"); } return 0; } $ cat hugepage.c #include <stdio.h> #include <sys/mman.h> #include <string.h> #define ADDR_INPUT 0x700000000000UL #define HPS 0x200000 int main(int argc, char *argv[]) { int nr_hp = strtol(argv[1], NULL, 0); char *p; while (1) { p = mmap((void *)ADDR_INPUT, nr_hp * HPS, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_HUGETLB, -1, 0); if (p != (void *)ADDR_INPUT) { perror("mmap"); break; } memset(p, 0, nr_hp * HPS); munmap(p, nr_hp * HPS); } } $ sysctl vm.nr_hugepages=40 $ ./hugepage 10 & $ ./movepages 10 $(pgrep -f hugepage) Fixes: e632a938 ("mm: migrate: add hugepage migration code to move_pages()") Signed-off-by:
Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Reported-by:
Hugh Dickins <hughd@google.com> Cc: James Hogan <james.hogan@imgtec.com> Cc: David Rientjes <rientjes@google.com> Cc: Mel Gorman <mel@csn.ul.ie> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Michal Hocko <mhocko@suse.cz> Cc: Rik van Riel <riel@redhat.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Luiz Capitulino <lcapitulino@redhat.com> Cc: Nishanth Aravamudan <nacc@linux.vnet.ibm.com> Cc: Lee Schermerhorn <lee.schermerhorn@hp.com> Cc: Steve Capper <steve.capper@linaro.org> Cc: <stable@vger.kernel.org> [3.12+] Signed-off-by:
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Naoya Horiguchi authored
commit 61f77eda upstream. Currently we have many duplicates in definitions around follow_huge_addr(), follow_huge_pmd(), and follow_huge_pud(), so this patch tries to remove the m. The basic idea is to put the default implementation for these functions in mm/hugetlb.c as weak symbols (regardless of CONFIG_ARCH_WANT_GENERAL_HUGETL B), and to implement arch-specific code only when the arch needs it. For follow_huge_addr(), only powerpc and ia64 have their own implementation, and in all other architectures this function just returns ERR_PTR(-EINVAL). So this patch sets returning ERR_PTR(-EINVAL) as default. As for follow_huge_(pmd|pud)(), if (pmd|pud)_huge() is implemented to always return 0 in your architecture (like in ia64 or sparc,) it's never called (the callsite is optimized away) no matter how implemented it is. So in such architectures, we don't need arch-specific implementation. In some architecture (like mips, s390 and tile,) their current arch-specific follow_huge_(pmd|pud)() are effectively identical with the common code, so this patch lets these architecture use the common code. One exception is metag, where pmd_huge() could return non-zero but it expects follow_huge_pmd() to always return NULL. This means that we need arch-specific implementation which returns NULL. This behavior looks strange to me (because non-zero pmd_huge() implies that the architecture supports PMD-based hugepage, so follow_huge_pmd() can/should return some relevant value,) but that's beyond this cleanup patch, so let's keep it. Justification of non-trivial changes: - in s390, follow_huge_pmd() checks !MACHINE_HAS_HPAGE at first, and this patch removes the check. This is OK because we can assume MACHINE_HAS_HPAGE is true when follow_huge_pmd() can be called (note that pmd_huge() has the same check and always returns 0 for !MACHINE_HAS_HPAGE.) - in s390 and mips, we use HPAGE_MASK instead of PMD_MASK as done in common code. This patch forces these archs use PMD_MASK, but it's OK because they are identical in both archs. In s390, both of HPAGE_SHIFT and PMD_SHIFT are 20. In mips, HPAGE_SHIFT is defined as (PAGE_SHIFT + PAGE_SHIFT - 3) and PMD_SHIFT is define as (PAGE_SHIFT + PAGE_SHIFT + PTE_ORDER - 3), but PTE_ORDER is always 0, so these are identical. Signed-off-by:
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Naoya Horiguchi authored
commit 9ab3b598 upstream. A race condition starts to be visible in recent mmotm, where a PG_hwpoison flag is set on a migration source page *before* it's back in buddy page poo= l. This is problematic because no page flag is supposed to be set when freeing (see __free_one_page().) So the user-visible effect of this race is that it could trigger the BUG_ON() when soft-offlining is called. The root cause is that we call lru_add_drain_all() to make sure that the page is in buddy, but that doesn't work because this function just schedule= s a work item and doesn't wait its completion. drain_all_pages() does drainin= g directly, so simply dropping lru_add_drain_all() solves this problem. Fixes: f15bdfa8 ("mm/memory-failure.c: fix memory leak in successful soft offlining") Signed-off-by:
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Oliver Neukum authored
commit a32c99e7 upstream. The touchscreen needs the same quirk as the other models. Signed-off-by:
Oliver Neukum <oneukum@suse.de> Reported-by:
Bryan Poling <poli0048@umn.edu> CC: stable@vger.kernel.org Acked-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
Jiri Kosina <jkosina@suse.cz> Signed-off-by:
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Adel Gadllah authored
commit fa51ee10 upstream. Yet another device that needs this quirk. Reported-by:
Tanguy de Baritault <tdebaritault@gmail.com> Signed-off-by:
Adel Gadllah <adel.gadllah@gmail.com> Signed-off-by:
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Oliver Neukum authored
commit 5235166f upstream. There is a second mouse sharing the same vendor strings but different IDs. Signed-off-by:
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Oliver Neukum authored
commit 4980f957 upstream. This mouse keeps disconnecting in runlevel 3. It needs the ALWAYS_POLL quirk. Signed-off-by:
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Jakub Sitnicki authored
commit ef567cf9 upstream. Microsoft Natural Wireless Ergonomic Keyboard 7000 has special My Favorites 1..5 keys which are handled through a vendor-defined usage page (0xff05). Apply MS_ERGONOMY quirks handling to USB PID 0x071d (Microsoft Microsoft 2.4GHz Transceiver V1.0) so that the My Favorites 1..5 keys are reported as KEY_F14..18 events. Link: https://bugzilla.kernel.org/show_bug.cgi?id=52841Signed-off-by:
Jakub Sitnicki <jsitnicki@gmail.com> Signed-off-by:
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- 13 Mar, 2015 1 commit
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Oliver Neukum authored
commit b45abacd upstream. The switch back is limited to ULT even on HP. The contrary finding arose by bad luck in BIOS versions for testing. This fixes spontaneous resume from S3 on some HP laptops. Signed-off-by:
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- 12 Mar, 2015 28 commits
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Mitko Haralanov authored
commit 18c0b82a upstream. This changeset removes all the code that allows the driver to write to the EEPROM and update the recorded error counters and power on hours. These two stats are unused and writing them exposes a timing risk which could leave the EEPROM in a bad state preventing further normal operation of the HCA. Reviewed-by:
Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by:
Mitko Haralanov <mitko.haralanov@intel.com> Signed-off-by:
Roland Dreier <roland@purestorage.com> Signed-off-by:
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Tony Battersby authored
commit 3b524a68 upstream. Fix SCSI generic read() incorrectly returning success after detecting an error. Signed-off-by:
Tony Battersby <tonyb@cybernetics.com> Acked-by:
Douglas Gilbert <dgilbert@interlog.com> Signed-off-by:
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Takashi Iwai authored
commit 6426460e upstream. BIOS doesn't seem to set up pins for 5.1 and the SPDIF out, so we need to give explicitly here. Reported-and-tested-by:
Misan Thropos <misanthropos@gmx.de> Signed-off-by:
Takashi Iwai <tiwai@suse.de> Signed-off-by:
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Takashi Iwai authored
commit 70372a75 upstream. When a PCM draining is performed to an empty stream that has been already in PREPARED state, the current code just ignores and leaves as it is, although the drain is supposed to set all such streams to SETUP state. This patch covers that overlooked case. Signed-off-by:
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Ben Hutchings authored
We need to check the position and size of file writes against various limits, using generic_write_check(). This was not being done for the splice write path. It was fixed upstream by commit 8d020765 ("->splice_write() via ->write_iter()") but we can't apply that. CVE-2014-7822 Signed-off-by:
Ben Hutchings <ben@decadent.org.uk> [ kamal: port to 3.13-stable: context ] Signed-off-by:
Kamal Mostafa <kamal@canonical.com> Signed-off-by:
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Linus Torvalds authored
commit 9c145c56 upstream. The stack guard page error case has long incorrectly caused a SIGBUS rather than a SIGSEGV, but nobody actually noticed until commit fee7e49d ("mm: propagate error from stack expansion even for guard page") because that error case was never actually triggered in any normal situations. Now that we actually report the error, people noticed the wrong signal that resulted. So far, only the test suite of libsigsegv seems to have actually cared, but there are real applications that use libsigsegv, so let's not wait for any of those to break. Reported-and-tested-by:
Jan Engelhardt <jengelh@inai.de> Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com> # "s390 still compiles and boots" Cc: linux-arch@vger.kernel.org Cc: stable@vger.kernel.org Signed-off-by:
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Guenter Roeck authored
commit e262eb93 upstream. Fix misspelled define. Fixes: 33692f27 ("vm: add VM_FAULT_SIGSEGV handling support") Signed-off-by:
Guenter Roeck <linux@roeck-us.net> Signed-off-by:
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Linus Torvalds authored
commit 33692f27 upstream. The core VM already knows about VM_FAULT_SIGBUS, but cannot return a "you should SIGSEGV" error, because the SIGSEGV case was generally handled by the caller - usually the architecture fault handler. That results in lots of duplication - all the architecture fault handlers end up doing very similar "look up vma, check permissions, do retries etc" - but it generally works. However, there are cases where the VM actually wants to SIGSEGV, and applications _expect_ SIGSEGV. In particular, when accessing the stack guard page, libsigsegv expects a SIGSEGV. And it usually got one, because the stack growth is handled by that duplicated architecture fault handler. However, when the generic VM layer started propagating the error return from the stack expansion in commit fee7e49d ("mm: propagate error from stack expansion even for guard page"), that now exposed the existing VM_FAULT_SIGBUS result to user space. And user space really expected SIGSEGV, not SIGBUS. To fix that case, we need to add a VM_FAULT_SIGSEGV, and teach all those duplicate architecture fault handlers about it. They all already have the code to handle SIGSEGV, so it's about just tying that new return value to the existing code, but it's all a bit annoying. This is the mindless minimal patch to do this. A more extensive patch would be to try to gather up the mostly shared fault handling logic into one generic helper routine, and long-term we really should do that cleanup. Just from this patch, you can generally see that most architectures just copied (directly or indirectly) the old x86 way of doing things, but in the meantime that original x86 model has been improved to hold the VM semaphore for shorter times etc and to handle VM_FAULT_RETRY and other "newer" things, so it would be a good idea to bring all those improvements to the generic case and teach other architectures about them too. Reported-and-tested-by:
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Linus Torvalds authored
commit 7fb08eca upstream. This replaces four copies in various stages of mm_fault_error() handling with just a single one. It will also allow for more natural placement of the unlocking after some further cleanup. Signed-off-by:
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Björn Gerhart authored
commit b20b1618 upstream. In order to support an older USB cradle by Denso, I added its vendor- and product-ID to the array of usb_device_id acm_ids. In this way cdc-acm feels responsible for this cradle. The related /dev/ttyACM node is being created properly, and the data transfer works. However, later cradle models by Denso do have proper descriptors, so the patch is not required for these. At the same time both the older and the later model have the same vendor- and product-ID, but they both work with the patched driver. Declaration of the Denso cradles I tested: - both models have the same IDs: vendorID 0x076d, productID 0x0006 - older model: Denso CU-321 (descriptors not properly set) - later model: Denso CU-821 (with proper descriptors) Signed-off-by:
Bjoern Gerhart <oss@airbjorn.de> Acked-by:
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Felipe Balbi authored
commit 3e43a072 upstream. We need a pm_runtime_get_sync() call from within musb_gadget_pullup() to make sure registers are accessible at that time. The problem is that musb_gadget_pullup() is called with IRQs disabled and, because of that, we need to tell pm_runtime that this pm_runtime_get_sync() is IRQ safe. We can simply add pm_runtime_irq_safe(), however, because we need to make our read/write accessor function pointers have been initialized before trying to use them. This means that all pm_runtime initialization for musb_core needs to be moved down so that when we call pm_runtime_irq_safe(), the pm_runtime_get_sync() that it calls on the parent, won't cause a crash due to NULL musb_read/write accessors. Reported-by:
Pali Rohár <pali.rohar@gmail.com> Signed-off-by:
Felipe Balbi <balbi@ti.com> Signed-off-by:
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Felipe Balbi authored
commit 9ec36f7f upstream. f_phonet's ->set_alt() method will call usb_ep_disable() potentially on an endpoint which is already disabled. That's something the gadget/function driver must guarantee that it's always balanced. In order to balance the calls, just make sure the endpoint was enabled before by means of checking the validity of driver_data. Reported-by:
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Anton Staaf authored
commit 679315e5 upstream. Add support for Google devices that export simple serial interfaces using the vendor specific SubClass/Protocol pair 0x50/0x01. Signed-off-by:
Anton Staaf <robotboy@chromium.org> Reviewed-by:
Benson Leung <bleung@chromium.org> [johan: move id entries and update Kconfig] Signed-off-by:
Johan Hovold <johan@kernel.org> Signed-off-by:
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Alan Wu authored
commit 5e7e9e90 upstream. Based on code for the US Surface Type Cover 3 from commit be3b1634 ("HID: add support for MS Surface Pro 3 Type Cover"): Signed-off-by:
Alan Wu <alan.c.wu@gmail.com> Tested-by:
Karlis Dreizis <karlisdreizis@gmail.com> Signed-off-by:
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Alan Wu authored
commit be3b1634 upstream. Surface Pro 3 Type Cover that works with Ubuntu (and possibly Arch) from this thread. Both trackpad and keyboard work after compiling my own kernel. http://ubuntuforums.org/showthread.php?t=2231207&page=2&s=44910e0c56047e4f93dfd9fea58121ef Also includes Jarrad Whitaker's message which sources http://winaero.com/blog/how-to-install-linux-on-surface-pro-3/ which he says is sourced from a Russian site Signed-off-by:
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Hans de Goede authored
commit 3faed1af upstream. The Microsoft Office keyboard has a scrollwheel as well as some special keys above the keypad which are handled through the custom MS usage page, this commit adds support for these. Signed-off-by:
Hans de Goede <hdegoede@redhat.com> Signed-off-by:
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Jim Keir authored
commit afd700d9 upstream. The FF2 driver (usbhid/hid-pidff.c) sends commands to the stick during ff_init. However, this is called inside a block where driver_input_lock is locked, so the results of these initial commands are discarded. This behavior is the "killer", without this nothing else works. ff_init issues commands using "hid_hw_request". This eventually goes to hid_input_report, which returns -EBUSY because driver_input_lock is locked. The change is to delay the ff_init call in hid-core.c until after this lock has been released. Calling hid_device_io_start() releases the lock so the device can be configured. We also need to call hid_device_io_stop() on exit for the lock to remain locked while ending the init of the drivers. [ benjamin.tissoires@redhat.com: imrpoved the changelog a lot ] Signed-off-by:
Jim Keir <jimkeir@oracledbadirect.com> Reviewed-by:
Benjamin.tissoires <benjamin.tissoires@redhat.com> Signed-off-by:
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Ross Skaliotis authored
commit cbd366be upstream. Enabled quirks necessary for correct battery capacity reporting. Cleaned up surrounding style. Signed-off-by:
Ross Skaliotis <rskaliotis@gmail.com> Signed-off-by:
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Jiri Slaby authored
commit f0bf0bd0 upstream. This problem was taken care of three times already in * b0de59b5 (TTY: do not update atime/mtime on read/write), * 37b7f3c7 (TTY: fix atime/mtime regression), and * b0b88565 (tty: fix up atime/mtime mess, take three) But it still misses one point. As John Paul correctly points out, we do not care about setting date. If somebody ever changes wall time backwards (by mistake for example), tty timestamps are never updated until the original wall time passes. So check the absolute difference of times and if it large than "8 seconds or so", always update the time. That means we will update immediatelly when changing time. Ergo, CAP_SYS_TIME can foul the check, but it was always that way. Thanks John for serving me this so nicely debugged. Signed-off-by:
John Paul Perry <john_paul.perry@alcatel-lucent.com> Acked-by:
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Vineet Gupta authored
commit 13648b01 upstream. /proc/<pid>/maps currently don't annotate stack vma with "[stack]" This is because KSTK_ESP ie expected to return usermode SP of tsk while currently it returns the kernel mode SP of a sleeping tsk. While the fix is trivial, we also need to adjust the ARC kernel stack unwinder to not use KSTK_SP and friends any more. Reported-and-suggested-by:
Alexey Brodkin <abrodkin@synopsys.com> Signed-off-by:
Vineet Gupta <vgupta@synopsys.com> Signed-off-by:
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Al Viro authored
commit 1711fd9a upstream. POLL_OUT isn't what callers of ->poll() are expecting to see; it's actually __SI_POLL | 2 and it's a siginfo code, not a poll bitmap bit... Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk> Cc: Bruce Fields <bfields@fieldses.org> Signed-off-by:
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Al Viro authored
commit 7e0e953b upstream. use_pde()/unuse_pde() in ->follow_link()/->put_link() resp. Signed-off-by:
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Al Viro authored
commit 0db59e59 upstream. As it is, we have debugfs_remove() racing with symlink traversals. Supply ->evict_inode() and do freeing there - inode will remain pinned until we are done with the symlink body. And rip the idiocy with checking if dentry is positive right after we'd verified debugfs_positive(), which is a stronger check... Signed-off-by:
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Al Viro authored
commit 0a280962 upstream. X-Coverup: just ask spender Signed-off-by:
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Johan Hovold authored
commit ca4383a3 upstream. Add missing error handling when registering the tty device at port probe. This avoids trying to remove an uninitialised character device when the port device is removed. Fixes: 1da177e4 ("Linux-2.6.12-rc2") Reported-by:
Greg Kroah-Hartman <greg@kroah.com> Signed-off-by:
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Johan Hovold authored
commit 07fdfc5e upstream. Fix return value in probe error path, which could end up returning success (0) on errors. This could in turn lead to use-after-free or double free (e.g. in port_remove) when the port device is removed. Fixes: c706ebdf ("USB: usb-serial: call port_probe and port_remove at the right times") Signed-off-by:
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Johan Hovold authored
commit 79fbf4a5 upstream. Fix overflow bug in tty_wait_until_sent on 64-bit machines, where an infinite timeout (0) would be passed to the underlying tty-driver's wait_until_sent-operation as a negative timeout (-1), causing it to return immediately. This manifests itself for example as tcdrain() returning immediately, drivers not honouring the drain flags when setting terminal attributes, or even dropped data on close as a requested infinite closing-wait timeout would be ignored. The first symptom was reported by Asier LLANO who noted that tcdrain() returned prematurely when using the ftdi_sio usb-serial driver. Fix this by passing 0 rather than MAX_SCHEDULE_TIMEOUT (LONG_MAX) to the underlying tty driver. Note that the serial-core wait_until_sent-implementation is not affected by this bug due to a lucky chance (comparison to an unsigned maximum timeout), and neither is the cyclades one that had an explicit check for negative timeouts, but all other tty drivers appear to be affected. Fixes: 1da177e4 ("Linux-2.6.12-rc2") Reported-by:
ZIV-Asier Llano Palacios <asier.llano@cgglobal.com> Signed-off-by:
Peter Hurley <peter@hurleysoftware.com> Signed-off-by:
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Johan Hovold authored
commit f528bf4f upstream. Make sure to handle an infinite timeout (0). Note that wait_until_sent is currently never called with a 0-timeout argument due to a bug in tty_wait_until_sent. Fixes: dcf01050 ("USB: serial: add generic wait_until_sent implementation") Signed-off-by:
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