1. 29 Mar, 2012 2 commits
    • Jason Wessel's avatar
      kgdbts: Fix kernel oops with CONFIG_DEBUG_RODATA · 456ca7ff
      Jason Wessel authored
      On x86 the kgdb test suite will oops when the kernel is compiled with
      CONFIG_DEBUG_RODATA and you run the tests after boot time. This is
      regression has existed since 2.6.26 by commit: b33cb815 (kgdbts: Use
      HW breakpoints with CONFIG_DEBUG_RODATA).
      
      The test suite can use hw breakpoints for all the tests, but it has to
      execute the hardware breakpoint specific tests first in order to
      determine that the hw breakpoints actually work.  Specifically the
      very first test causes an oops:
      
      # echo V1I1 > /sys/module/kgdbts/parameters/kgdbts
      kgdb: Registered I/O driver kgdbts.
      kgdbts:RUN plant and detach test
      
      Entering kdb (current=0xffff880017aa9320, pid 1078) on processor 0 due to Keyboard Entry
      [0]kdb> kgdbts: ERROR PUT: end of test buffer on 'plant_and_detach_test' line 1 expected OK got $E14#aa
      WARNING: at drivers/misc/kgdbts.c:730 run_simple_test+0x151/0x2c0()
      [...oops clipped...]
      
      This commit re-orders the running of the tests and puts the RODATA
      check into its own function so as to correctly avoid the kernel oops
      by detecting and using the hw breakpoints.
      
      Cc: <stable@vger.kernel.org> # >= 2.6.26
      Signed-off-by: default avatarJason Wessel <jason.wessel@windriver.com>
      456ca7ff
    • Jason Wessel's avatar
      kdb: Fix smatch warning on dbg_io_ops->is_console · 78724b8e
      Jason Wessel authored
      The Smatch tool warned that the change from commit b8adde8d
      (kdb: Avoid using dbg_io_ops until it is initialized) should
      add another null check later in the kdb_printf().
      
      It is worth noting that the second use of dbg_io_ops->is_console
      is protected by the KDB_PAGER state variable which would only
      get set when kdb is fully active and initialized.  If we
      ever encounter changes or defects in the KDB_PAGER state
      we do not want to crash the kernel in a kdb_printf/printk.
      
      CC: Tim Bird <tim.bird@am.sony.com>
      Reported-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
      Signed-off-by: default avatarJason Wessel <jason.wessel@windriver.com>
      78724b8e
  2. 22 Mar, 2012 7 commits
  3. 18 Mar, 2012 3 commits
    • Linus Torvalds's avatar
      Linux 3.3 · c16fa4f2
      Linus Torvalds authored
      c16fa4f2
    • Jason Baron's avatar
      Don't limit non-nested epoll paths · 93dc6107
      Jason Baron authored
      Commit 28d82dc1 ("epoll: limit paths") that I did to limit the
      number of possible wakeup paths in epoll is causing a few applications
      to longer work (dovecot for one).
      
      The original patch is really about limiting the amount of epoll nesting
      (since epoll fds can be attached to other fds). Thus, we probably can
      allow an unlimited number of paths of depth 1. My current patch limits
      it at 1000. And enforce the limits on paths that have a greater depth.
      
      This is captured in: https://bugzilla.redhat.com/show_bug.cgi?id=681578Signed-off-by: default avatarJason Baron <jbaron@redhat.com>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      93dc6107
    • Linus Torvalds's avatar
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net · c579bc7e
      Linus Torvalds authored
      Pull networking changes from David Miller:
       "1) icmp6_dst_alloc() returns NULL instead of ERR_PTR() leading to
           crashes, particularly during shutdown.  Reported by Dave Jones and
           fixed by Eric Dumazet.
      
        2) hyperv and wimax/i2400m return NETDEV_TX_BUSY when they have
           already freed the SKB, which causes crashes as to the caller this
           means requeue the packet.  Fixes from Eric Dumazet.
      
        3) usbnet driver doesn't allocate the right amount of headroom on
           fresh RX SKBs, fix from Eric Dumazet.
      
        4) Fix regression in ip6_mc_find_dev_rcu(), as an RCU lookup it
           abolutely should not take a reference to 'dev', this leads to
           leaks.  Fix from RonQing Li.
      
        5) Fix netfilter ctnetlink race between delete and timeout expiration.
           From Pablo Neira Ayuso.
      
        6) Revert SFQ change which causes regressions, specifically queueing
           to tail can lead to unavoidable flow starvation.  From Eric
           Dumazet.
      
        7) Fix a memory leak and a crash on corrupt firmware files in bnx2x,
           from Michal Schmidt."
      
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
        netfilter: ctnetlink: fix race between delete and timeout expiration
        ipv6: Don't dev_hold(dev) in ip6_mc_find_dev_rcu.
        wimax/i2400m: fix erroneous NETDEV_TX_BUSY use
        net/hyperv: fix erroneous NETDEV_TX_BUSY use
        net/usbnet: reserve headroom on rx skbs
        bnx2x: fix memory leak in bnx2x_init_firmware()
        bnx2x: fix a crash on corrupt firmware file
        sch_sfq: revert dont put new flow at the end of flows
        ipv6: fix icmp6_dst_alloc()
      c579bc7e
  4. 17 Mar, 2012 10 commits
  5. 16 Mar, 2012 18 commits