user/sven/linux.git, branch v3.10.43

Linux 3.10.43

2014-06-11T19:12:04Z

netfilter: Fix potential use after free in ip6_route_me_harder()

2014-06-11T19:03:27Z

commit a8951d5814e1373807a94f79f7ccec7041325470 upstream. Dst is released one line before we access it again with dst->error. Fixes: 58e35d147128 netfilter: ipv6: propagate routing errors from ip6_route_me_harder() Signed-off-by: Sergey Popovich Signed-off-by: Pablo Neira Ayuso Signed-off-by: Greg Kroah-Hartman

ARM: perf: hook up perf_sample_event_took around pmu irq handling

2014-06-11T19:03:27Z

commit 5f5092e72cc25a6a5785308270e0085b2b2772cc upstream. Since we indirect all of our PMU IRQ handling through a dispatcher, it's trivial to hook up perf_sample_event_took to prevent applications such as oprofile from generating interrupt storms due to an unrealisticly low sample period. Reported-by: Robert Richter Signed-off-by: Will Deacon Cc: Weng Meiling Signed-off-by: Greg Kroah-Hartman

perf: Enforce 1 as lower limit for perf_event_max_sample_rate

2014-06-11T19:03:27Z

commit 723478c8a471403c53cf144999701f6e0c4bbd11 upstream. /proc/sys/kernel/perf_event_max_sample_rate will accept negative values as well as 0. Negative values are unreasonable, and 0 causes a divide by zero exception in perf_proc_update_handler. This patch enforces a lower limit of 1. Signed-off-by: Knut Petersen Signed-off-by: Peter Zijlstra Link: http://lkml.kernel.org/r/5242DB0C.4070005@t-online.de Signed-off-by: Ingo Molnar Cc: Weng Meiling Signed-off-by: Greg Kroah-Hartman

perf: Fix interrupt handler timing harness

2014-06-11T19:03:27Z

commit e5302920da9ef23f9d19d4e9ac85704cc25bee7a upstream. This patch fixes a serious bug in: 14c63f17b1fd perf: Drop sample rate when sampling is too slow There was an misunderstanding on the API of the do_div() macro. It returns the remainder of the division and this was not what the function expected leading to disabling the interrupt latency watchdog. This patch also remove a duplicate assignment in perf_sample_event_took(). Signed-off-by: Stephane Eranian Cc: peterz@infradead.org Cc: dave.hansen@linux.intel.com Cc: ak@linux.intel.com Cc: jolsa@redhat.com Link: http://lkml.kernel.org/r/20130704223010.GA30625@quad Signed-off-by: Ingo Molnar Cc: Weng Meiling Signed-off-by: Greg Kroah-Hartman

perf: Drop sample rate when sampling is too slow

2014-06-11T19:03:26Z

commit 14c63f17b1fde5a575a28e96547a22b451c71fb5 upstream. This patch keeps track of how long perf's NMI handler is taking, and also calculates how many samples perf can take a second. If the sample length times the expected max number of samples exceeds a configurable threshold, it drops the sample rate. This way, we don't have a runaway sampling process eating up the CPU. This patch can tend to drop the sample rate down to level where perf doesn't work very well. *BUT* the alternative is that my system hangs because it spends all of its time handling NMIs. I'll take a busted performance tool over an entire system that's busted and undebuggable any day. BTW, my suspicion is that there's still an underlying bug here. Using the HPET instead of the TSC is definitely a contributing factor, but I suspect there are some other things going on. But, I can't go dig down on a bug like that with my machine hanging all the time. Signed-off-by: Dave Hansen Acked-by: Peter Zijlstra Cc: paulus@samba.org Cc: acme@ghostprotocols.net Cc: Dave Hansen [ Prettified it a bit. ] Signed-off-by: Ingo Molnar Cc: Weng Meiling Signed-off-by: Greg Kroah-Hartman

iser-target: Add missing target_put_sess_cmd for ImmedateData failure

2014-06-11T19:03:26Z

commit 6cc44a6fb46e1ecc1c28125aa8fa34d317aa9ea7 upstream. This patch addresses a bug where an early exception for SCSI WRITE with ImmediateData=Yes was missing the target_put_sess_cmd() call to drop the extra se_cmd->cmd_kref reference obtained during the normal iscsit_setup_scsi_cmd() codepath execution. This bug was manifesting itself during session shutdown within isert_cq_rx_comp_err() where target_wait_for_sess_cmds() would end up waiting indefinately for the last se_cmd->cmd_kref put to occur for the failed SCSI WRITE + ImmediateData descriptors. This fix follows what traditional iscsi-target code already does for the same failure case within iscsit_get_immediate_data(). Reported-by: Sagi Grimberg Cc: Sagi Grimberg Cc: Or Gerlitz Signed-off-by: Nicholas Bellinger Signed-off-by: Greg Kroah-Hartman

mm: rmap: fix use-after-free in __put_anon_vma

2014-06-11T19:03:26Z

commit 624483f3ea82598ab0f62f1bdb9177f531ab1892 upstream. While working address sanitizer for kernel I've discovered use-after-free bug in __put_anon_vma. For the last anon_vma, anon_vma->root freed before child anon_vma. Later in anon_vma_free(anon_vma) we are referencing to already freed anon_vma->root to check rwsem. This fixes it by freeing the child anon_vma before freeing anon_vma->root. Signed-off-by: Andrey Ryabinin Acked-by: Peter Zijlstra Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman

USB: Avoid runtime suspend loops for HCDs that can't handle suspend/resume

2014-06-11T19:03:26Z

commit 8ef42ddd9a53b73e6fc3934278710c27f80f324f upstream. Not all host controller drivers have bus-suspend and bus-resume methods. When one doesn't, it will cause problems if runtime PM is enabled in the kernel. The PM core will attempt to suspend the controller's root hub, the suspend will fail because there is no bus-suspend routine, and a -EBUSY error code will be returned to the PM core. This will cause the suspend attempt to be repeated shortly thereafter, in a never-ending loop. Part of the problem is that the original error code -ENOENT gets changed to -EBUSY in usb_runtime_suspend(), on the grounds that the PM core will interpret -ENOENT as meaning that the root hub has gotten into a runtime-PM error state. While this change is appropriate for real USB devices, it's not such a good idea for a root hub. In fact, considering the root hub to be in a runtime-PM error state would not be far from the truth. Therefore this patch updates usb_runtime_suspend() so that it adjusts error codes only for non-root-hub devices. Furthermore, the patch attempts to prevent the problem from occurring in the first place by not enabling runtime PM by default for root hubs whose host controller driver doesn't have bus_suspend and bus_resume methods. Signed-off-by: Alan Stern Reported-by: Will Deacon Tested-by: Will Deacon Signed-off-by: Greg Kroah-Hartman

USB: io_ti: fix firmware download on big-endian machines (part 2)

2014-06-11T19:03:26Z

commit c03890ff5e24a4bf59059f2d179f427559b7330a upstream. A recent patch that purported to fix firmware download on big-endian machines failed to add the corresponding sparse annotation to the i2c-header. This was reported by the kbuild test robot. Adding the appropriate annotation revealed another endianess bug related to the i2c-header Size-field in a code path that is exercised when the firmware is actually being downloaded (and not just verified and left untouched unless older than the firmware at hand). This patch adds the required sparse annotation to the i2c-header and makes sure that the Size-field is sent in little-endian byte order during firmware download also on big-endian machines. Note that this patch is only compile-tested, but that there is no functional change for little-endian systems. Reported-by: kbuild test robot Cc: Ludovic Drolez Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman