- 08 Jun, 2017 40 commits
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Wanpeng Li authored
[ Upstream commit cbfc6c91 ] Huawei folks reported a read out-of-bounds vulnerability in kvm pio emulation. - "inb" instruction to access PIT Mod/Command register (ioport 0x43, write only, a read should be ignored) in guest can get a random number. - "rep insb" instruction to access PIT register port 0x43 can control memcpy() in emulator_pio_in_emulated() to copy max 0x400 bytes but only read 1 bytes, which will disclose the unimportant kernel memory in host but no crash. The similar test program below can reproduce the read out-of-bounds vulnerability: void hexdump(void *mem, unsigned int len) { unsigned int i, j; for(i = 0; i < len + ((len % HEXDUMP_COLS) ? (HEXDUMP_COLS - len % HEXDUMP_COLS) : 0); i++) { /* print offset */ if(i % HEXDUMP_COLS == 0) { printf("0x%06x: ", i); } /* print hex data */ if(i < len) { printf("%02x ", 0xFF & ((char*)mem)[i]); } else /* end of block, just aligning for ASCII dump */ { printf(" "); } /* print ASCII dump */ if(i % HEXDUMP_COLS == (HEXDUMP_COLS - 1)) { for(j = i - (HEXDUMP_COLS - 1); j <= i; j++) { if(j >= len) /* end of block, not really printing */ { putchar(' '); } else if(isprint(((char*)mem)[j])) /* printable char */ { putchar(0xFF & ((char*)mem)[j]); } else /* other char */ { putchar('.'); } } putchar('\n'); } } } int main(void) { int i; if (iopl(3)) { err(1, "set iopl unsuccessfully\n"); return -1; } static char buf[0x40]; /* test ioport 0x40,0x41,0x42,0x43,0x44,0x45 */ memset(buf, 0xab, sizeof(buf)); asm volatile("push %rdi;"); asm volatile("mov %0, %%rdi;"::"q"(buf)); asm volatile ("mov $0x40, %rdx;"); asm volatile ("in %dx,%al;"); asm volatile ("stosb;"); asm volatile ("mov $0x41, %rdx;"); asm volatile ("in %dx,%al;"); asm volatile ("stosb;"); asm volatile ("mov $0x42, %rdx;"); asm volatile ("in %dx,%al;"); asm volatile ("stosb;"); asm volatile ("mov $0x43, %rdx;"); asm volatile ("in %dx,%al;"); asm volatile ("stosb;"); asm volatile ("mov $0x44, %rdx;"); asm volatile ("in %dx,%al;"); asm volatile ("stosb;"); asm volatile ("mov $0x45, %rdx;"); asm volatile ("in %dx,%al;"); asm volatile ("stosb;"); asm volatile ("pop %rdi;"); hexdump(buf, 0x40); printf("\n"); /* ins port 0x40 */ memset(buf, 0xab, sizeof(buf)); asm volatile("push %rdi;"); asm volatile("mov %0, %%rdi;"::"q"(buf)); asm volatile ("mov $0x20, %rcx;"); asm volatile ("mov $0x40, %rdx;"); asm volatile ("rep insb;"); asm volatile ("pop %rdi;"); hexdump(buf, 0x40); printf("\n"); /* ins port 0x43 */ memset(buf, 0xab, sizeof(buf)); asm volatile("push %rdi;"); asm volatile("mov %0, %%rdi;"::"q"(buf)); asm volatile ("mov $0x20, %rcx;"); asm volatile ("mov $0x43, %rdx;"); asm volatile ("rep insb;"); asm volatile ("pop %rdi;"); hexdump(buf, 0x40); printf("\n"); return 0; } The vcpu->arch.pio_data buffer is used by both in/out instrutions emulation w/o clear after using which results in some random datas are left over in the buffer. Guest reads port 0x43 will be ignored since it is write only, however, the function kernel_pio() can't distigush this ignore from successfully reads data from device's ioport. There is no new data fill the buffer from port 0x43, however, emulator_pio_in_emulated() will copy the stale data in the buffer to the guest unconditionally. This patch fixes it by clearing the buffer before in instruction emulation to avoid to grant guest the stale data in the buffer. In addition, string I/O is not supported for in kernel device. So there is no iteration to read ioport %RCX times for string I/O. The function kernel_pio() just reads one round, and then copy the io size * %RCX to the guest unconditionally, actually it copies the one round ioport data w/ other random datas which are left over in the vcpu->arch.pio_data buffer to the guest. This patch fixes it by introducing the string I/O support for in kernel device in order to grant the right ioport datas to the guest. Before the patch: 0x000000: fe 38 93 93 ff ff ab ab .8...... 0x000008: ab ab ab ab ab ab ab ab ........ 0x000010: ab ab ab ab ab ab ab ab ........ 0x000018: ab ab ab ab ab ab ab ab ........ 0x000020: ab ab ab ab ab ab ab ab ........ 0x000028: ab ab ab ab ab ab ab ab ........ 0x000030: ab ab ab ab ab ab ab ab ........ 0x000038: ab ab ab ab ab ab ab ab ........ 0x000000: f6 00 00 00 00 00 00 00 ........ 0x000008: 00 00 00 00 00 00 00 00 ........ 0x000010: 00 00 00 00 4d 51 30 30 ....MQ00 0x000018: 30 30 20 33 20 20 20 20 00 3 0x000020: ab ab ab ab ab ab ab ab ........ 0x000028: ab ab ab ab ab ab ab ab ........ 0x000030: ab ab ab ab ab ab ab ab ........ 0x000038: ab ab ab ab ab ab ab ab ........ 0x000000: f6 00 00 00 00 00 00 00 ........ 0x000008: 00 00 00 00 00 00 00 00 ........ 0x000010: 00 00 00 00 4d 51 30 30 ....MQ00 0x000018: 30 30 20 33 20 20 20 20 00 3 0x000020: ab ab ab ab ab ab ab ab ........ 0x000028: ab ab ab ab ab ab ab ab ........ 0x000030: ab ab ab ab ab ab ab ab ........ 0x000038: ab ab ab ab ab ab ab ab ........ After the patch: 0x000000: 1e 02 f8 00 ff ff ab ab ........ 0x000008: ab ab ab ab ab ab ab ab ........ 0x000010: ab ab ab ab ab ab ab ab ........ 0x000018: ab ab ab ab ab ab ab ab ........ 0x000020: ab ab ab ab ab ab ab ab ........ 0x000028: ab ab ab ab ab ab ab ab ........ 0x000030: ab ab ab ab ab ab ab ab ........ 0x000038: ab ab ab ab ab ab ab ab ........ 0x000000: d2 e2 d2 df d2 db d2 d7 ........ 0x000008: d2 d3 d2 cf d2 cb d2 c7 ........ 0x000010: d2 c4 d2 c0 d2 bc d2 b8 ........ 0x000018: d2 b4 d2 b0 d2 ac d2 a8 ........ 0x000020: ab ab ab ab ab ab ab ab ........ 0x000028: ab ab ab ab ab ab ab ab ........ 0x000030: ab ab ab ab ab ab ab ab ........ 0x000038: ab ab ab ab ab ab ab ab ........ 0x000000: 00 00 00 00 00 00 00 00 ........ 0x000008: 00 00 00 00 00 00 00 00 ........ 0x000010: 00 00 00 00 00 00 00 00 ........ 0x000018: 00 00 00 00 00 00 00 00 ........ 0x000020: ab ab ab ab ab ab ab ab ........ 0x000028: ab ab ab ab ab ab ab ab ........ 0x000030: ab ab ab ab ab ab ab ab ........ 0x000038: ab ab ab ab ab ab ab ab ........ Reported-by:
Moguofang <moguofang@huawei.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Radim Krčmář <rkrcmar@redhat.com> Cc: Moguofang <moguofang@huawei.com> Signed-off-by:
Wanpeng Li <wanpeng.li@hotmail.com> Cc: stable@vger.kernel.org Signed-off-by:
Radim Krčmář <rkrcmar@redhat.com> Signed-off-by:
Sasha Levin <alexander.levin@verizon.com>
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Johan Hovold authored
[ Upstream commit 46c319b8 ] Make sure to check the number of endpoints to avoid dereferencing a NULL-pointer should a malicious device lack endpoints. Fixes: 1da177e4 ("Linux-2.6.12-rc2") Cc: stable <stable@vger.kernel.org> Signed-off-by:
Johan Hovold <johan@kernel.org> Reviewed-by:
Guenter Roeck <linux@roeck-us.net> Signed-off-by:
Wim Van Sebroeck <wim@iguana.be> Signed-off-by:
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Julius Werner authored
[ Upstream commit b299cde2 ] /dev/mem currently allows mmap() mappings that wrap around the end of the physical address space, which should probably be illegal. It circumvents the existing STRICT_DEVMEM permission check because the loop immediately terminates (as the start address is already higher than the end address). On the x86_64 architecture it will then cause a panic (from the BUG(start >= end) in arch/x86/mm/pat.c:reserve_memtype()). This patch adds an explicit check to make sure offset + size will not wrap around in the physical address type. Signed-off-by:
Julius Werner <jwerner@chromium.org> Cc: stable <stable@vger.kernel.org> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
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Lucas Stach authored
[ Upstream commit 88e2582e ] With serdev we might end up with serial ports that have no cdev exported to userspace, as they are used as the bus interface to other devices. In that case serial_match_port() won't be able to find a matching tty_dev. Skip the irq wakeup enabling in that case, as serdev will make sure to keep the port active, as long as there are devices depending on it. Fixes: 8ee3fde0 (tty_port: register tty ports with serdev bus) Signed-off-by:
Lucas Stach <l.stach@pengutronix.de> Cc: stable <stable@vger.kernel.org> Signed-off-by:
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Peter Hurley authored
[ Upstream commit 9ce119f3 ] A line discipline which does not define a receive_buf() method can can cause a GPF if data is ever received [1]. Oddly, this was known to the author of n_tracesink in 2011, but never fixed. [1] GPF report BUG: unable to handle kernel NULL pointer dereference at (null) IP: [< (null)>] (null) PGD 3752d067 PUD 37a7b067 PMD 0 Oops: 0010 [#1] SMP KASAN Modules linked in: CPU: 2 PID: 148 Comm: kworker/u10:2 Not tainted 4.4.0-rc2+ #51 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 Workqueue: events_unbound flush_to_ldisc task: ffff88006da94440 ti: ffff88006db60000 task.ti: ffff88006db60000 RIP: 0010:[<0000000000000000>] [< (null)>] (null) RSP: 0018:ffff88006db67b50 EFLAGS: 00010246 RAX: 0000000000000102 RBX: ffff88003ab32f88 RCX: 0000000000000102 RDX: 0000000000000000 RSI: ffff88003ab330a6 RDI: ffff88003aabd388 RBP: ffff88006db67c48 R08: ffff88003ab32f9c R09: ffff88003ab31fb0 R10: ffff88003ab32fa8 R11: 0000000000000000 R12: dffffc0000000000 R13: ffff88006db67c20 R14: ffffffff863df820 R15: ffff88003ab31fb8 FS: 0000000000000000(0000) GS:ffff88006dc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 0000000000000000 CR3: 0000000037938000 CR4: 00000000000006e0 Stack: ffffffff829f46f1 ffff88006da94bf8 ffff88006da94bf8 0000000000000000 ffff88003ab31fb0 ffff88003aabd438 ffff88003ab31ff8 ffff88006430fd90 ffff88003ab32f9c ffffed0007557a87 1ffff1000db6cf78 ffff88003ab32078 Call Trace: [<ffffffff8127cf91>] process_one_work+0x8f1/0x17a0 kernel/workqueue.c:2030 [<ffffffff8127df14>] worker_thread+0xd4/0x1180 kernel/workqueue.c:2162 [<ffffffff8128faaf>] kthread+0x1cf/0x270 drivers/block/aoe/aoecmd.c:1302 [<ffffffff852a7c2f>] ret_from_fork+0x3f/0x70 arch/x86/entry/entry_64.S:468 Code: Bad RIP value. RIP [< (null)>] (null) RSP <ffff88006db67b50> CR2: 0000000000000000 ---[ end trace a587f8947e54d6ea ]--- Reported-by:
Dmitry Vyukov <dvyukov@google.com> Cc: <stable@vger.kernel.org> Signed-off-by:
Peter Hurley <peter@hurleysoftware.com> Signed-off-by:
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Dmitry Vyukov authored
[ Upstream commit 7098296a ] flush_to_ldisc reads port->itty and checks that it is not NULL, concurrently release_tty sets port->itty to NULL. It is possible that flush_to_ldisc loads port->itty once, ensures that it is not NULL, but then reloads it again and uses. The second load can already return NULL, which will cause a crash. Use READ_ONCE to read port->itty. The data race was found with KernelThreadSanitizer (KTSAN). Signed-off-by:
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Johan Hovold authored
[ Upstream commit 1e948479 ] Make sure to deregister the SPI driver before releasing the tty driver to avoid use-after-free in the SPI remove callback where the tty devices are deregistered. Fixes: 72d4724e ("serial: ifx6x60: Add modem power off function in the platform reboot process") Cc: stable <stable@vger.kernel.org> # 3.8 Cc: Jun Chen <jun.d.chen@intel.com> Signed-off-by:
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Geert Uytterhoeven authored
[ Upstream commit 9a499db0 ] Casting spi_driver pointers to "void *" when calling spi_{,un}register_driver() bypasses all type checking. Remove the superfluous casts to fix this. Signed-off-by:
Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by:
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Johan Hovold authored
[ Upstream commit d3ba126a ] This reverts commit 8ee3fde0. The new serdev bus hooked into the tty layer in tty_port_register_device() by registering a serdev controller instead of a tty device whenever a serdev client is present, and by deregistering the controller in the tty-port destructor. This is broken in several ways: Firstly, it leads to a NULL-pointer dereference whenever a tty driver later deregisters its devices as no corresponding character device will exist. Secondly, far from every tty driver uses tty-port refcounting (e.g. serial core) so the serdev devices might never be deregistered or deallocated. Thirdly, deregistering at tty-port destruction is too late as the underlying device and structures may be long gone by then. A port is not released before an open tty device is closed, something which a registered serdev client can prevent from ever happening. A driver callback while the device is gone typically also leads to crashes. Many tty drivers even keep their ports around until the driver is unloaded (e.g. serial core), something which even if a late callback never happens, leads to leaks if a device is unbound from its driver and is later rebound. The right solution here is to add a new tty_port_unregister_device() helper and to never call tty_device_unregister() whenever the port has been claimed by serdev, but since this requires modifying just about every tty driver (and multiple subsystems) it will need to be done incrementally. Reverting the offending patch is the first step in fixing the broken lifetime assumptions. A follow-up patch will add a new pair of tty-device registration helpers, which a vetted tty driver can use to support serdev (initially serial core). When every tty driver uses the serdev helpers (at least for deregistration), we can add serdev registration to tty_port_register_device() again. Note that this also fixes another issue with serdev, which currently allocates and registers a serdev controller for every tty device registered using tty_port_device_register() only to immediately deregister and deallocate it when the corresponding OF node or serdev child node is missing. This should be addressed before enabling serdev for hot-pluggable buses. Signed-off-by:
Rob Herring <robh@kernel.org> Cc: stable <stable@vger.kernel.org> Signed-off-by:
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Rob Herring authored
[ Upstream commit 8ee3fde0 ] Register a serdev controller with the serdev bus when a tty_port is registered. This creates the serdev controller and create's serdev devices for any DT child nodes of the tty_port's parent (i.e. the UART device). Signed-off-by:
Sebastian Reichel <sre@kernel.org> Tested-By:
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Peter Ujfalusi authored
[ Upstream commit 6df2b42f ] We have one register for each EP to set the maximum packet size for both TX and RX. If for example an RX programming would happen before the previous TX transfer finishes we would reset the TX packet side. To fix this issue, only modify the TX or RX part of the register. Fixes: 550a7375 ("USB: Add MUSB and TUSB support") Signed-off-by:
Peter Ujfalusi <peter.ujfalusi@ti.com> Tested-by:
Tony Lindgren <tony@atomide.com> Signed-off-by:
Bin Liu <b-liu@ti.com> Cc: stable <stable@vger.kernel.org> Signed-off-by:
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Thomas Petazzoni authored
[ Upstream commit 4b148d51 ] platform_get_irq() returns an error code, but the xhci-plat driver ignores it and always returns -ENODEV. This is not correct, and prevents -EPROBE_DEFER from being propagated properly. CC: <stable@vger.kernel.org> Signed-off-by:
Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by:
Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by:
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Alan Stern authored
[ Upstream commit 63aea0db ] With threaded interrupts, bottom-half handlers are called with interrupts enabled. Therefore they can't safely use spin_lock(); they have to use spin_lock_irqsave(). Lockdep warns about a violation occurring in xhci_irq(): ========================================================= [ INFO: possible irq lock inversion dependency detected ] 4.11.0-rc8-dbg+ #1 Not tainted --------------------------------------------------------- swapper/7/0 just changed the state of lock: (&(&ehci->lock)->rlock){-.-...}, at: [<ffffffffa0130a69>] ehci_hrtimer_func+0x29/0xc0 [ehci_hcd] but this lock took another, HARDIRQ-unsafe lock in the past: (hcd_urb_list_lock){+.....} and interrupts could create inverse lock ordering between them. other info that might help us debug this: Possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- lock(hcd_urb_list_lock); local_irq_disable(); lock(&(&ehci->lock)->rlock); lock(hcd_urb_list_lock); <Interrupt> lock(&(&ehci->lock)->rlock); *** DEADLOCK *** no locks held by swapper/7/0. the shortest dependencies between 2nd lock and 1st lock: -> (hcd_urb_list_lock){+.....} ops: 252 { HARDIRQ-ON-W at: __lock_acquire+0x602/0x1280 lock_acquire+0xd5/0x1c0 _raw_spin_lock+0x2f/0x40 usb_hcd_unlink_urb_from_ep+0x1b/0x60 [usbcore] xhci_giveback_urb_in_irq.isra.45+0x70/0x1b0 [xhci_hcd] finish_td.constprop.60+0x1d8/0x2e0 [xhci_hcd] xhci_irq+0xdd6/0x1fa0 [xhci_hcd] usb_hcd_irq+0x26/0x40 [usbcore] irq_forced_thread_fn+0x2f/0x70 irq_thread+0x149/0x1d0 kthread+0x113/0x150 ret_from_fork+0x2e/0x40 This patch fixes the problem. Signed-off-by:
Alan Stern <stern@rowland.harvard.edu> Reported-and-tested-by:
Bart Van Assche <bart.vanassche@sandisk.com> CC: <stable@vger.kernel.org> Signed-off-by:
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Felipe Balbi authored
[ Upstream commit 76a35293 ] Instead of having several return points, let's use a local variable and a single place to return. This makes the code slightly easier to read. [set ret = IRQ_HANDLED in default working case -Mathias] Signed-off-by:
Felipe Balbi <felipe.balbi@linux.intel.com> Signed-off-by:
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Peter Chen authored
[ Upstream commit 7480d912 ] According to xHCI ch4.20 Scratchpad Buffers, the Scratchpad Buffer needs to be zeroed. ... The following operations take place to allocate Scratchpad Buffers to the xHC: ... b. Software clears the Scratchpad Buffer to '0' Cc: stable <stable@vger.kernel.org> Signed-off-by:
Peter Chen <peter.chen@nxp.com> Signed-off-by:
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Mathias Nyman authored
[ Upstream commit a0c16630 ] Intel Denverton microserver is Atom based and need the PME and CAS quirks as well. Cc: stable <stable@vger.kernel.org> Signed-off-by:
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Thomas Gleixner authored
[ Upstream commit 30e7d894 ] Enabling the tracer selftest triggers occasionally the warning in text_poke(), which warns when the to be modified page is not marked reserved. The reason is that the tracer selftest installs kprobes on functions marked __init for testing. These probes are removed after the tests, but that removal schedules the delayed kprobes_optimizer work, which will do the actual text poke. If the work is executed after the init text is freed, then the warning triggers. The bug can be reproduced reliably when the work delay is increased. Flush the optimizer work and wait for the optimizing/unoptimizing lists to become empty before returning from the kprobes tracer selftest. That ensures that all operations which were queued due to the probes removal have completed. Link: http://lkml.kernel.org/r/20170516094802.76a468bb@gandalf.local.homeSigned-off-by:
Thomas Gleixner <tglx@linutronix.de> Acked-by:
Masami Hiramatsu <mhiramat@kernel.org> Cc: stable@vger.kernel.org Fixes: 6274de49 ("kprobes: Support delayed unoptimizing") Signed-off-by:
Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by:
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Johan Hovold authored
[ Upstream commit 49e67dd1 ] The memory allocator passed to __unflatten_device_tree() (e.g. a wrapped kzalloc) can fail so add the missing sanity check to avoid dereferencing a NULL pointer. Fixes: fe140423 ("of/flattree: Refactor unflatten_device_tree and add fdt_unflatten_tree") Cc: stable <stable@vger.kernel.org> # 2.6.38 Signed-off-by:
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Bjørn Mork authored
[ Upstream commit 8d7a10dd ] In their infinite wisdom, and never ending quest for end user frustration, Lenovo has decided to use new USB device IDs for the wwan modules in their 2017 laptops. The actual hardware is still the Sierra Wireless EM7455 or EM7430, depending on region. Cc: <stable@vger.kernel.org> Signed-off-by:
Bjørn Mork <bjorn@mork.no> Signed-off-by:
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Johan Hovold authored
[ Upstream commit bec444cd ] Add missing sanity check on the non-SuperSpeed hub-descriptor length in order to avoid parsing and leaking two bytes of uninitialised slab data through sysfs removable-attributes (or a compound-device debug statement). Note that we only make sure that the DeviceRemovable field is always present (and specifically ignore the unused PortPwrCtrlMask field) in order to continue support any hubs with non-compliant descriptors. As a further safeguard, the descriptor buffer is also cleared. Fixes: 1da177e4 ("Linux-2.6.12-rc2") Cc: stable <stable@vger.kernel.org> # 2.6.12 Signed-off-by:
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Johan Hovold authored
[ Upstream commit 2c25a2c8 ] A SuperSpeed hub descriptor does not have any variable-length fields so bail out when reading a short descriptor. This avoids parsing and leaking two bytes of uninitialised slab data through sysfs removable-attributes. Fixes: dbe79bbe ("USB 3.0 Hub Changes") Cc: stable <stable@vger.kernel.org> # 2.6.39 Cc: John Youn <John.Youn@synopsys.com> Acked-by:
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Johan Hovold authored
[ Upstream commit dd5ca753 ] Drop erroneous le16_to_cpu when returning the USB device speed which is already in host byte order. Found using sparse: warning: cast to restricted __le16 Fixes: 946b960d ("USB: add driver for iowarrior devices.") Cc: stable <stable@vger.kernel.org> # 2.6.21 Signed-off-by:
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Johan Hovold authored
[ Upstream commit 41318a2b ] Add missing endianness conversion when using the USB device-descriptor idProduct field to apply a hardware quirk. Fixes: 1ba47da5 ("uwb: add the i1480 DFU driver") Cc: stable <stable@vger.kernel.org> # 2.6.28 Signed-off-by:
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Vamsi Krishna Samavedam authored
[ Upstream commit 2f964780 ] Format specifier %p can leak kernel addresses while not valuing the kptr_restrict system settings. When kptr_restrict is set to (1), kernel pointers printed using the %pK format specifier will be replaced with Zeros. Debugging Note : &pK prints only Zeros as address. If you need actual address information, write 0 to kptr_restrict. echo 0 > /proc/sys/kernel/kptr_restrict [Found by poking around in a random vendor kernel tree, it would be nice if someone would actually send these types of patches upstream - gkh] Signed-off-by:
Vamsi Krishna Samavedam <vskrishn@codeaurora.org> Cc: stable <stable@vger.kernel.org> Signed-off-by:
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Alan Stern authored
[ Upstream commit 628c2893 ] The ene_usb6250 sub-driver in usb-storage does USB I/O to buffers on the stack, which doesn't work with vmapped stacks. This patch fixes the problem by allocating a separate 512-byte buffer at probe time and using it for all of the offending I/O operations. Signed-off-by:
Andreas Hartmann <andihartmann@01019freenet.de> CC: <stable@vger.kernel.org> Signed-off-by:
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Andrey Korolyov authored
[ Upstream commit 5f63424a ] This patch adds support for recognition of ARM-USB-TINY(H) devices which are almost identical to ARM-USB-OCD(H) but lacking separate barrel jack and serial console. By suggestion from Johan Hovold it is possible to replace ftdi_jtag_quirk with a bit more generic construction. Since all Olimex-ARM debuggers has exactly two ports, we could safely always use only second port within the debugger family. Signed-off-by:
Andrey Korolyov <andrey@xdel.ru> Cc: stable <stable@vger.kernel.org> Signed-off-by:
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Willy Tarreau authored
[ Upstream commit 3e21f4af ] The lp_setup() code doesn't apply any bounds checking when passing "lp=none", and only in this case, resulting in an overflow of the parport_nr[] array. All versions in Git history are affected. Reported-By:
Roee Hay <roee.hay@hcl.com> Cc: Ben Hutchings <ben@decadent.org.uk> Cc: stable@vger.kernel.org Signed-off-by:
Willy Tarreau <w@1wt.eu> Signed-off-by:
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Mikulas Patocka authored
[ Upstream commit 13840d38 ] Change the type of the parameter "retain_bytes" from unsigned to unsigned long, so that on 64-bit machines the user can set more than 4GiB of data to be retained. Also, change the type of the variable "count" in the function "__evict_old_buffers" to unsigned long. The assignment "count = c->n_buffers[LIST_CLEAN] + c->n_buffers[LIST_DIRTY];" could result in unsigned long to unsigned overflow and that could result in buffers not being freed when they should. While at it, avoid division in get_retain_buffers(). Division is slow, we can change it to shift because we have precalculated the log2 of block size. Cc: stable@vger.kernel.org Signed-off-by:
Mikulas Patocka <mpatocka@redhat.com> Signed-off-by:
Mike Snitzer <snitzer@redhat.com> Signed-off-by:
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Jiang Liu authored
[ Upstream commit 0d0b4c86 ] With the introduction of hierarchy irqdomain, struct irq_data becomes per-chip instead of per-irq and there may be multiple irq_datas associated with the same irq. Some per-irq data stored in struct irq_data now may get duplicated into multiple irq_datas, and causes inconsistent view. So introduce struct irq_common_data to host per-irq common data and to achieve consistent view among irq_chips. Signed-off-by:
Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Jason Cooper <jason@lakedaemon.net> Cc: Kevin Cernekee <cernekee@gmail.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Marc Zyngier <marc.zyngier@arm.com> Link: http://lkml.kernel.org/r/1433145945-789-4-git-send-email-jiang.liu@linux.intel.comSigned-off-by:
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Du, Changbin authored
[ Upstream commit 4e9f3118 ] Debugfs init failure is not so important. We can continue our job on this failure. Also no break need for debugfs_create_file call failure. Signed-off-by:
Du, Changbin <changbin.du@intel.com> [felipe.balbi@linux.intel.com : - remove out-of-memory message, we get that from OOM. - switch dev_err() to dev_dbg() ] Signed-off-by:
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Suzuki K Poulose authored
[ Upstream commit 120f0779 ] Rearrange the code for fake pgd handling, which is applicable only for arm64. This will later be removed once we introduce the stage2 page table walker macros. Reviewed-by:
Marc Zyngier <marc.zyngier@arm.com> Reviewed-by:
Christoffer Dall <christoffer.dall@linaro.org> Signed-off-by:
Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by:
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Firo Yang authored
[ Upstream commit a5f56ba3 ] No need to cast the void pointer returned by kmalloc() in arch/arm/kvm/mmu.c::kvm_alloc_stage2_pgd(). Signed-off-by:
Firo Yang <firogm@gmail.com> Acked-by:
Paolo Bonzini <pbonzini@redhat.com> Signed-off-by:
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Hiroyuki Yokoyama authored
[ Upstream commit 9a445bbb ] This patch fixes the register definition of AE (Address Error flag) bit. Fixes: 0c1c8ff3 ("dmaengine: usb-dmac: Add Renesas USB DMA Controller (USB-DMAC) driver") Cc: <stable@vger.kernel.org> # v4.1+ Signed-off-by:
Hiroyuki Yokoyama <hiroyuki.yokoyama.vx@renesas.com> [Shimoda: add Fixes and Cc tags in the commit log] Signed-off-by:
Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Reviewed-by:
Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by:
Vinod Koul <vinod.koul@intel.com> Signed-off-by:
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Joe Thornber authored
[ Upstream commit 0377a07c ] When decrementing the reference count for a block, the free count wasn't being updated if the reference count went to zero. Cc: stable@vger.kernel.org Signed-off-by:
Joe Thornber <ejt@redhat.com> Signed-off-by:
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Joe Thornber authored
[ Upstream commit 91bcdb92 ] These calls were the wrong way round in __write_initial_superblock. Cc: stable@vger.kernel.org Signed-off-by:
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Johan Hovold authored
[ Upstream commit 6aeb75e6 ] Fix a division-by-zero in set_termios when debugging is enabled and a high-enough speed has been requested so that the divisor value becomes zero. Instead of just fixing the offending debug statement, cap the baud rate at the base as a zero divisor value also appears to crash the firmware. Fixes: 1da177e4 ("Linux-2.6.12-rc2") Cc: stable <stable@vger.kernel.org> # 2.6.12 Reviewed-by:
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Johan Hovold authored
[ Upstream commit 26cede34 ] Drop erroneous cpu_to_le32 when setting the baud rate, something which corrupted the divisor on big-endian hosts. Found using sparse: warning: incorrect type in argument 1 (different base types) expected unsigned int [unsigned] [usertype] val got restricted __le32 [usertype] <noident> Fixes: af2ac1a0 ("USB: serial mct_usb232: move DMA buffers to heap") Cc: stable <stable@vger.kernel.org> # 2.6.34 Reviewed-by:
Pete Zaitcev <zaitcev@yahoo.com> Signed-off-by:
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Anthony Mallet authored
[ Upstream commit bb246681 ] Commit 557aaa7f ("ft232: support the ASYNC_LOW_LATENCY flag") enables unprivileged users to set the FTDI latency timer, but there was a logic flaw that skipped sending the corresponding USB control message to the device. Specifically, the device latency timer would not be updated until next open, something which was later also inadvertently broken by commit c19db4c9 ("USB: ftdi_sio: set device latency timeout at port probe"). A recent commit c6dce262 ("USB: serial: ftdi_sio: fix extreme low-latency setting") disabled the low-latency mode by default so we now need this fix to allow unprivileged users to again enable it. Signed-off-by:
Anthony Mallet <anthony.mallet@laas.fr> [johan: amend commit message] Fixes: 557aaa7f ("ft232: support the ASYNC_LOW_LATENCY flag") Fixes: c19db4c9 ("USB: ftdi_sio: set device latency timeout at port probe"). Cc: stable <stable@vger.kernel.org> # 2.6.31 Signed-off-by:
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Daniele Palmas authored
[ Upstream commit 40dd4604 ] This patch adds support for Telit ME910 PID 0x1100. Signed-off-by:
Daniele Palmas <dnlplm@gmail.com> Cc: stable <stable@vger.kernel.org> Signed-off-by:
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Leonard Crestez authored
[ Upstream commit d8581c7c ] The board file for imx6sx-sdb overrides cpufreq operating points to use higher voltages. This is done because the board has a shared rail for VDD_ARM_IN and VDD_SOC_IN and when using LDO bypass the shared voltage needs to be a value suitable for both ARM and SOC. This only applies to LDO bypass mode, a feature not present in upstream. When LDOs are enabled the effect is to use higher voltages than necessary for no good reason. Setting these higher voltages can make some boards fail to boot with ugly semi-random crashes reminiscent of memory corruption. These failures only happen on board rev. C, rev. B is reported to still work. Signed-off-by:
Leonard Crestez <leonard.crestez@nxp.com> Fixes: 54183bd7 ("ARM: imx6sx-sdb: add revb board and make it default") Cc: stable@vger.kernel.org Signed-off-by:
Shawn Guo <shawnguo@kernel.org> Signed-off-by:
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