- 24 Sep, 2016 40 commits
-
-
Guenter Roeck authored
commit 8e4b7205 upstream. Since commit acb2505d ("openrisc: fix copy_from_user()"), copy_from_user() returns the number of bytes requested, not the number of bytes not copied. Cc: Al Viro <viro@zeniv.linux.org.uk> Fixes: acb2505d ("openrisc: fix copy_from_user()") Signed-off-by:
Guenter Roeck <linux@roeck-us.net> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-
Guenter Roeck authored
commit 65c0044c upstream. avr32 builds fail with: arch/avr32/kernel/built-in.o: In function `arch_ptrace': (.text+0x650): undefined reference to `___copy_from_user' arch/avr32/kernel/built-in.o:(___ksymtab+___copy_from_user+0x0): undefined reference to `___copy_from_user' kernel/built-in.o: In function `proc_doulongvec_ms_jiffies_minmax': (.text+0x5dd8): undefined reference to `___copy_from_user' kernel/built-in.o: In function `proc_dointvec_minmax_sysadmin': sysctl.c:(.text+0x6174): undefined reference to `___copy_from_user' kernel/built-in.o: In function `ptrace_has_cap': ptrace.c:(.text+0x69c0): undefined reference to `___copy_from_user' kernel/built-in.o:ptrace.c:(.text+0x6b90): more undefined references to `___copy_from_user' follow Fixes: 8630c322 ("avr32: fix copy_from_user()") Cc: Al Viro <viro@zeniv.linux.org.uk> Acked-by:
Havard Skinnemoen <hskinnemoen@gmail.com> Acked-by:
Hans-Christian Noren Egtvedt <egtvedt@samfundet.no> Signed-off-by:
-
Al Viro authored
commit a5e541f7 upstream. Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
-
Thomas Gleixner authored
commit 4364e1a2 upstream. virq is not required to be the same for all msi descs. Use the base irq number from the desc in the debug printk. Reported-by:
Ingo Molnar <mingo@kernel.org> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
-
Al Viro authored
commit 22426465 upstream. should clear on access_ok() failures. Also remove the useless range truncation logics. Signed-off-by:
-
Al Viro authored
commit 917400ce upstream. Acked-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
-
Al Viro authored
commit ae7cc577 upstream. Signed-off-by:
-
Al Viro authored
commit e33d1f6f upstream. Signed-off-by:
-
Al Viro authored
commit acb2505d upstream. ... that should zero on faults. Also remove the <censored> helpful logics wrt range truncation copied from ppc32. Where it had ever been needed only in case of copy_from_user() *and* had not been merged into the mainline until a month after the need had disappeared. A decade before openrisc went into mainline, I might add... Signed-off-by:
-
Al Viro authored
commit aace880f upstream. Signed-off-by:
-
Al Viro authored
commit 8ae95ed4 upstream. Acked-by:
James Hogan <james.hogan@imgtec.com> Signed-off-by:
-
Al Viro authored
commit 2561d309 upstream. it should clear the destination even when access_ok() fails. Signed-off-by:
-
Al Viro authored
commit 2545e5da upstream. ... in all cases, including the failing access_ok() Note that some architectures using asm-generic/uaccess.h have __copy_from_user() not zeroing the tail on failure halfway through. This variant works either way. Signed-off-by:
-
Al Viro authored
commit e69d7005 upstream. Signed-off-by:
-
Al Viro authored
commit f35c1e06 upstream. It's -EFAULT, not -1 (and contrary to the comment in there, __strnlen_user() can return 0 - on faults). Acked-by:
Richard Kuo <rkuo@codeaurora.org> Signed-off-by:
-
Al Viro authored
commit 6e050503 upstream. Signed-off-by:
-
Al Viro authored
commit b615e3c7 upstream. Signed-off-by:
-
Al Viro authored
commit 8f035983 upstream. Signed-off-by:
-
Al Viro authored
commit eb47e029 upstream. * copy_from_user() on access_ok() failure ought to zero the destination * none of those primitives should skip the access_ok() check in case of small constant size. Acked-by:
Jesper Nilsson <jesper.nilsson@axis.com> Signed-off-by:
-
Al Viro authored
commit 3b8767a8 upstream. It should check access_ok(). Otherwise a bunch of places turn into trivially exploitable rootholes. Signed-off-by:
-
Al Viro authored
commit 9ad18b75 upstream. both for access_ok() failures and for faults halfway through Signed-off-by:
-
Vineet Gupta authored
commit 05d9d0b9 upstream. Al reported potential issue with ARC get_user() as it wasn't clearing out destination pointer in case of fault due to bad address etc. Verified using following | { | u32 bogus1 = 0xdeadbeef; | u64 bogus2 = 0xdead; | int rc1, rc2; | | pr_info("Orig values %x %llx\n", bogus1, bogus2); | rc1 = get_user(bogus1, (u32 __user *)0x40000000); | rc2 = get_user(bogus2, (u64 __user *)0x50000000); | pr_info("access %d %d, new values %x %llx\n", | rc1, rc2, bogus1, bogus2); | } | [ARCLinux]# insmod /mnt/kernel-module/qtn.ko | Orig values deadbeef dead | access -14 -14, new values 0 0 Reported-by:
Vineet Gupta <vgupta@synopsys.com> Signed-off-by:
-
Al Viro authored
commit fd2d2b19 upstream. Signed-off-by:
-
Al Viro authored
commit c2f18fa4 upstream. * should zero on any failure * __get_user() should use __copy_from_user(), not copy_from_user() Signed-off-by:
-
Al Viro authored
commit 2e29f50a upstream. a) should not leave crap on fault b) should _not_ require access_ok() in any cases. Signed-off-by:
-
Al Viro authored
commit c6852389 upstream. It could be done in exception-handling bits in __get_user_b() et.al., but the surgery involved would take more knowledge of sh64 details than I have or _want_ to have. Signed-off-by:
-
Al Viro authored
commit c90a3bc5 upstream. Signed-off-by:
-
Al Viro authored
commit 43403eab upstream. Signed-off-by:
-
Al Viro authored
commit 1c109fab upstream. get_user_ex(x, ptr) should zero x on failure. It's not a lot of a leak (at most we are leaking uninitialized 64bit value off the kernel stack, and in a fairly constrained situation, at that), but the fix is trivial, so... Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by:
-
Al Viro authored
commit d0cf3851 upstream. Signed-off-by:
-
Al Viro authored
commit 8630c322 upstream. really ugly, but apparently avr32 compilers turns access_ok() into something so bad that they want it in assembler. Left that way, zeroing added in inline wrapper. Signed-off-by:
-
Al Viro authored
commit e98b9e37 upstream. Signed-off-by:
-
Al Viro authored
commit d4690f1e upstream. ... by turning it into what used to be multipages counterpart Signed-off-by:
-
Boris Brezillon authored
commit 5eb0d6eb upstream. aic5_irq_domain_xlate() and aic_irq_domain_xlate() take the generic chip lock without disabling interrupts, which can lead to a deadlock if an interrupt occurs while the lock is held in one of these functions. Replace irq_gc_{lock,unlock}() calls by irq_gc_{lock_irqsave,unlock_irqrestore}() ones to prevent this bug from happening. Fixes: b1479ebb ("irqchip: atmel-aic: Add atmel AIC/AIC5 drivers") Signed-off-by:
Boris Brezillon <boris.brezillon@free-electrons.com> Acked-by:
Marc Zyngier <marc.zyngier@arm.com> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Nicolas Ferre <nicolas.ferre@atmel.com> Cc: Alexandre Belloni <alexandre.belloni@free-electrons.com> Link: http://lkml.kernel.org/r/1473775109-4192-2-git-send-email-boris.brezillon@free-electrons.comSigned-off-by:
-
Boris Brezillon authored
commit ebf9ff75 upstream. Some irqchip drivers need to take the generic chip lock outside of the irq context. Provide the irq_gc_{lock_irqsave,unlock_irqrestore}() helpers to allow one to disable irqs while entering a critical section protected by gc->lock. Note that we do not provide optimized version of these helpers for !SMP, because they are not called from the hot-path. [ tglx: Added a comment when these helpers should be [not] used ] Signed-off-by:
-
Kristian H. Kristensen authored
commit 47a66e45 upstream. Similar to struct drm_update_draw, struct drm_mode_fb_cmd2 has an unaligned 64 bit field (modifier). This get packed differently between 32 bit and 64 bit modes on architectures that can handle unaligned 64 bit access (X86 and IA64). Other architectures pack the structs the same and don't need the compat wrapper. Use the same condition for drm_mode_fb_cmd2 as we use for drm_update_draw. Note that only the modifier will be packed differently between compat and non-compat versions. Reviewed-by:
Rob Clark <robdclark@gmail.com> Signed-off-by:
Kristian H. Kristensen <hoegsberg@chromium.org> [seanpaul added not at bottom of commit msg re: modifier] Signed-off-by:
Sean Paul <seanpaul@chromium.org> Link: http://patchwork.freedesktop.org/patch/msgid/1473801645-116011-1-git-send-email-hoegsberg@chromium.orgSigned-off-by:
Dave Airlie <airlied@redhat.com> Signed-off-by:
-
Jan Leupold authored
commit d31ed3f0 upstream. The code is applying the same scaling for the X and Y components, thus making the scaling feature only functional when both components have the same scaling factor. Do the s/_w/_h/ replacement where appropriate to fix vertical scaling. Signed-off-by:
Jan Leupold <leupold@rsi-elektrotechnik.de> Fixes: 1a396789 ("drm: add Atmel HLCDC Display Controller support") Signed-off-by:
-
Arnd Bergmann authored
commit facc432f upstream. The napi_synchronize() function is defined twice: The definition for SMP builds waits for other CPUs to be done, while the uniprocessor variant just contains a barrier and ignores its argument. In the mvneta driver, this leads to a warning about an unused variable when we lookup the NAPI struct of another CPU and then don't use it: ethernet/marvell/mvneta.c: In function 'mvneta_percpu_notifier': ethernet/marvell/mvneta.c:2910:30: error: unused variable 'other_port' [-Werror=unused-variable] There are no other CPUs on a UP build, so that code never runs, but gcc does not know this. The nicest solution seems to be to turn the napi_synchronize() helper into an inline function for the UP case as well, as that leads gcc to not complain about the argument being unused. Once we do that, we can also combine the two cases into a single function definition and use if(IS_ENABLED()) rather than #ifdef to make it look a bit nicer. The warning first came up in linux-4.4, but I failed to catch it earlier. Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Fixes: f8642885 ("net: mvneta: Statically assign queues to CPUs") Signed-off-by:
-
Arnd Bergmann authored
commit 236dec05 upstream. Using "make tinyconfig" produces a couple of annoying warnings that show up for build test machines all the time: .config:966:warning: override: NOHIGHMEM changes choice state .config:965:warning: override: SLOB changes choice state .config:963:warning: override: KERNEL_XZ changes choice state .config:962:warning: override: CC_OPTIMIZE_FOR_SIZE changes choice state .config:933:warning: override: SLOB changes choice state .config:930:warning: override: CC_OPTIMIZE_FOR_SIZE changes choice state .config:870:warning: override: SLOB changes choice state .config:868:warning: override: KERNEL_XZ changes choice state .config:867:warning: override: CC_OPTIMIZE_FOR_SIZE changes choice state I've made a previous attempt at fixing them and we discussed a number of alternatives. I tried changing the Makefile to use "merge_config.sh -n $(fragment-list)" but couldn't get that to work properly. This is yet another approach, based on the observation that we do want to see a warning for conflicting 'choice' options, and that we can simply make them non-conflicting by listing all other options as disabled. This is a trivial patch that we can apply independent of plans for other changes. Link: http://lkml.kernel.org/r/20160829214952.1334674-2-arnd@arndb.de Link: https://storage.kernelci.org/mainline/v4.7-rc6/x86-tinyconfig/build.log https://patchwork.kernel.org/patch/9212749/Signed-off-by:
Josh Triplett <josh@joshtriplett.org> Reviewed-by:
Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
-
Arnd Bergmann authored
commit 00affcac upstream. gcc warns about the 'found' variable possibly being used uninitialized: drivers/soc/qcom/spm.c: In function 'spm_dev_probe': drivers/soc/qcom/spm.c:305:5: error: 'found' may be used uninitialized in this function [-Werror=maybe-uninitialized] However, the code is correct because we know that there is always at least one online CPU. This initializes the 'found' variable to zero before the loop so the compiler knows it does not have to warn about it. Signed-off-by:
-
