1. 25 Feb, 2018 1 commit
    • Takashi Iwai's avatar
      ALSA: caiaq: Add a sanity check for invalid EPs · b43a3e21
      Takashi Iwai authored
      commit 58fc7f73 upstream.
      
      As syzkaller spotted, currently caiaq driver submits a URB with the
      fixed EP without checking whether it's actually available, which may
      result in a kernel warning like:
        usb 1-1: BOGUS urb xfer, pipe 3 != type 1
        ------------[ cut here ]------------
        WARNING: CPU: 1 PID: 1150 at drivers/usb/core/urb.c:449
        usb_submit_urb+0xf8a/0x11d0
        Modules linked in:
        CPU: 1 PID: 1150 Comm: kworker/1:1 Not tainted
        4.14.0-rc2-42660-g24b7bd59eec0 #277
        Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
        Workqueue: usb_hub_wq hub_event
        Call Trace:
         init_card sound/usb/caiaq/device.c:467
         snd_probe+0x81c/0x1150 sound/usb/caiaq/device.c:525
         usb_probe_interface+0x35d/0x8e0 drivers/usb/core/driver.c:361
         ....
      
      This patch adds a sanity check of validity of EPs at the device
      initialization phase for avoiding the call with an invalid EP.
      Reported-by: default avatarAndrey Konovalov <andreyknvl@google.com>
      Tested-by: default avatarAndrey Konovalov <andreyknvl@google.com>
      Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
      b43a3e21
  2. 11 Oct, 2017 1 commit
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  13. 18 Nov, 2011 1 commit
    • Greg Kroah-Hartman's avatar
      USB: convert sound/* to use module_usb_driver() · 424f0750
      Greg Kroah-Hartman authored
      This converts the drivers in sound/* to use the
      module_usb_driver() macro which makes the code smaller and a bit
      simpler.
      
      Added bonus is that it removes some unneeded kernel log messages about
      drivers loading and/or unloading.
      
      Cc: Jaroslav Kysela <perex@perex.cz>
      Cc: Takashi Iwai <tiwai@suse.de>
      Cc: Daniel Mack <zonque@gmail.com>
      Cc: Clemens Ladisch <clemens@ladisch.de>
      Cc: Torsten Schenk <torsten.schenk@zoho.com>
      Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
      Cc: Karsten Wiese <fzu@wemgehoertderstaat.de>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
      424f0750
  14. 13 Oct, 2011 1 commit
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  18. 30 Mar, 2010 1 commit
    • Tejun Heo's avatar
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking... · 5a0e3ad6
      Tejun Heo authored
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
      
      percpu.h is included by sched.h and module.h and thus ends up being
      included when building most .c files.  percpu.h includes slab.h which
      in turn includes gfp.h making everything defined by the two files
      universally available and complicating inclusion dependencies.
      
      percpu.h -> slab.h dependency is about to be removed.  Prepare for
      this change by updating users of gfp and slab facilities include those
      headers directly instead of assuming availability.  As this conversion
      needs to touch large number of source files, the following script is
      used as the basis of conversion.
      
        http://userweb.kernel.org/~tj/misc/slabh-sweep.py
      
      The script does the followings.
      
      * Scan files for gfp and slab usages and update includes such that
        only the necessary includes are there.  ie. if only gfp is used,
        gfp.h, if slab is used, slab.h.
      
      * When the script inserts a new include, it looks at the include
        blocks and try to put the new include such that its order conforms
        to its surrounding.  It's put in the include block which contains
        core kernel includes, in the same order that the rest are ordered -
        alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
        doesn't seem to be any matching order.
      
      * If the script can't find a place to put a new include (mostly
        because the file doesn't have fitting include block), it prints out
        an error message indicating which .h file needs to be added to the
        file.
      
      The conversion was done in the following steps.
      
      1. The initial automatic conversion of all .c files updated slightly
         over 4000 files, deleting around 700 includes and adding ~480 gfp.h
         and ~3000 slab.h inclusions.  The script emitted errors for ~400
         files.
      
      2. Each error was manually checked.  Some didn't need the inclusion,
         some needed manual addition while adding it to implementation .h or
         embedding .c file was more appropriate for others.  This step added
         inclusions to around 150 files.
      
      3. The script was run again and the output was compared to the edits
         from #2 to make sure no file was left behind.
      
      4. Several build tests were done and a couple of problems were fixed.
         e.g. lib/decompress_*.c used malloc/free() wrappers around slab
         APIs requiring slab.h to be added manually.
      
      5. The script was run on all .h files but without automatically
         editing them as sprinkling gfp.h and slab.h inclusions around .h
         files could easily lead to inclusion dependency hell.  Most gfp.h
         inclusion directives were ignored as stuff from gfp.h was usually
         wildly available and often used in preprocessor macros.  Each
         slab.h inclusion directive was examined and added manually as
         necessary.
      
      6. percpu.h was updated not to include slab.h.
      
      7. Build test were done on the following configurations and failures
         were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
         distributed build env didn't work with gcov compiles) and a few
         more options had to be turned off depending on archs to make things
         build (like ipr on powerpc/64 which failed due to missing writeq).
      
         * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
         * powerpc and powerpc64 SMP allmodconfig
         * sparc and sparc64 SMP allmodconfig
         * ia64 SMP allmodconfig
         * s390 SMP allmodconfig
         * alpha SMP allmodconfig
         * um on x86_64 SMP allmodconfig
      
      8. percpu.h modifications were reverted so that it could be applied as
         a separate patch and serve as bisection point.
      
      Given the fact that I had only a couple of failures from tests on step
      6, I'm fairly confident about the coverage of this conversion patch.
      If there is a breakage, it's likely to be something in one of the arch
      headers which should be easily discoverable easily on most builds of
      the specific arch.
      Signed-off-by: default avatarTejun Heo <tj@kernel.org>
      Guess-its-ok-by: default avatarChristoph Lameter <cl@linux-foundation.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
      5a0e3ad6
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