- 08 Jan, 2014 14 commits
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Junho Ryu authored
commit 4e8d2139 upstream. ext4_mb_put_pa should hold pa->pa_lock before accessing pa->pa_count. While ext4_mb_use_preallocated checks pa->pa_deleted first and then increments pa->count later, ext4_mb_put_pa decrements pa->pa_count before holding pa->pa_lock and then sets pa->pa_deleted. * Free sequence ext4_mb_put_pa (1): atomic_dec_and_test pa->pa_count ext4_mb_put_pa (2): lock pa->pa_lock ext4_mb_put_pa (3): check pa->pa_deleted ext4_mb_put_pa (4): set pa->pa_deleted=1 ext4_mb_put_pa (5): unlock pa->pa_lock ext4_mb_put_pa (6): remove pa from a list ext4_mb_pa_callback: free pa * Use sequence ext4_mb_use_preallocated (1): iterate over preallocation ext4_mb_use_preallocated (2): lock pa->pa_lock ext4_mb_use_preallocated (3): check pa->pa_deleted ext4_mb_use_preallocated (4): increase pa->pa_count ext4_mb_use_preallocated (5): unlock pa->pa_lock ext4_mb_release_context: access pa * Use-after-free sequence [initial status] <pa->pa_deleted = 0, pa_count = 1> ext4_mb_use_preallocated (1): iterate over preallocation ext4_mb_use_preallocated (2): lock pa->pa_lock ext4_mb_use_preallocated (3): check pa->pa_deleted ext4_mb_put_pa (1): atomic_dec_and_test pa->pa_count [pa_count decremented] <pa->pa_deleted = 0, pa_count = 0> ext4_mb_use_preallocated (4): increase pa->pa_count [pa_count incremented] <pa->pa_deleted = 0, pa_count = 1> ext4_mb_use_preallocated (5): unlock pa->pa_lock ext4_mb_put_pa (2): lock pa->pa_lock ext4_mb_put_pa (3): check pa->pa_deleted ext4_mb_put_pa (4): set pa->pa_deleted=1 [race condition!] <pa->pa_deleted = 1, pa_count = 1> ext4_mb_put_pa (5): unlock pa->pa_lock ext4_mb_put_pa (6): remove pa from a list ext4_mb_pa_callback: free pa ext4_mb_release_context: access pa AddressSanitizer has detected use-after-free in ext4_mb_new_blocks Bug report: http://goo.gl/rG1On3Signed-off-by:
Junho Ryu <jayr@google.com> Signed-off-by:
"Theodore Ts'o" <tytso@mit.edu> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Len Brown authored
commit 23795e58 upstream. IVB Xeon currently shares the same parameters IVB client. Signed-off-by:
Len Brown <len.brown@intel.com> Cc: Vinson Lee <vlee@twopensource.com> Signed-off-by:
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Len Brown authored
commit 6edab08c upstream. From an OS point of view, IVB looks like SNB, but quicker. Signed-off-by:
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Miao Xie authored
commit c4602c1c upstream. Ftrace currently initializes only the online CPUs. This implementation has two problems: - If we online a CPU after we enable the function profile, and then run the test, we will lose the trace information on that CPU. Steps to reproduce: # echo 0 > /sys/devices/system/cpu/cpu1/online # cd <debugfs>/tracing/ # echo <some function name> >> set_ftrace_filter # echo 1 > function_profile_enabled # echo 1 > /sys/devices/system/cpu/cpu1/online # run test - If we offline a CPU before we enable the function profile, we will not clear the trace information when we enable the function profile. It will trouble the users. Steps to reproduce: # cd <debugfs>/tracing/ # echo <some function name> >> set_ftrace_filter # echo 1 > function_profile_enabled # run test # cat trace_stat/function* # echo 0 > /sys/devices/system/cpu/cpu1/online # echo 0 > function_profile_enabled # echo 1 > function_profile_enabled # cat trace_stat/function* # run test # cat trace_stat/function* So it is better that we initialize the ftrace profiler for each possible cpu every time we enable the function profile instead of just the online ones. Link: http://lkml.kernel.org/r/1387178401-10619-1-git-send-email-miaox@cn.fujitsu.comSigned-off-by:
Miao Xie <miaox@cn.fujitsu.com> Signed-off-by:
Steven Rostedt <rostedt@goodmis.org> Signed-off-by:
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Oleg Nesterov authored
commit c0c14395 upstream. selinux_setprocattr() does ptrace_parent(p) under task_lock(p), but task_struct->alloc_lock doesn't pin ->parent or ->ptrace, this looks confusing and triggers the "suspicious RCU usage" warning because ptrace_parent() does rcu_dereference_check(). And in theory this is wrong, spin_lock()->preempt_disable() doesn't necessarily imply rcu_read_lock() we need to access the ->parent. Reported-by:
Evan McNabb <emcnabb@redhat.com> Signed-off-by:
Oleg Nesterov <oleg@redhat.com> Signed-off-by:
Paul Moore <pmoore@redhat.com> Signed-off-by:
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Chad Hanson authored
commit 46d01d63 upstream. Fix a broken networking check. Return an error if peer recv fails. If secmark is active and the packet recv succeeds the peer recv error is ignored. Signed-off-by:
Chad Hanson <chanson@trustedcs.com> Signed-off-by:
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Bjørn Mork authored
commit 4144bc86 upstream. Reported-by:
Oliver Neukum <oneukum@suse.de> Signed-off-by:
Bjørn Mork <bjorn@mork.no> Acked-by:
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JongHo Kim authored
commit ed697e1a upstream. When the process is sleeping at the SNDRV_PCM_STATE_PAUSED state from the wait_for_avail function, the sleep process will be woken by timeout(10 seconds). Even if the sleep process wake up by timeout, by this patch, the process will continue with sleep and wait for the other state. Signed-off-by:
JongHo Kim <furmuwon@gmail.com> Signed-off-by:
Takashi Iwai <tiwai@suse.de> Signed-off-by:
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Bo Shen authored
commit f0199bc5 upstream. When wm8904 work in DSP mode B, we still need to configure it to work in DSP mode. Or else, it will work in Right Justified mode. Signed-off-by:
Bo Shen <voice.shen@atmel.com> Acked-by:
Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by:
Mark Brown <broonie@linaro.org> Signed-off-by:
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Geert Uytterhoeven authored
commit dc1dc2f8 upstream. When booting a multi-platform m68k kernel on a non-Mac with "console=ttyS0" on the kernel command line, it crashes with: Unable to handle kernel NULL pointer dereference at virtual address (null) Oops: 00000000 PC: [<0013ad28>] __pmz_startup+0x32/0x2a0 ... Call Trace: [<002c5d3e>] pmz_console_setup+0x64/0xe4 The normal tty driver doesn't crash, because init_pmz() checks pmz_ports_count again after calling pmz_probe(). In the serial console initialization path, pmz_console_init() doesn't do this, causing the driver to crash later. Add a check for pmz_ports_count to fix this. Signed-off-by:
Geert Uytterhoeven <geert@linux-m68k.org> Cc: Finn Thain <fthain@telegraphics.com.au> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by:
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pingfan liu authored
commit 91648ec0 upstream. Since kvmppc_hv_find_lock_hpte() is called from both virtmode and realmode, so it can trigger the deadlock. Suppose the following scene: Two physical cpuM, cpuN, two VM instances A, B, each VM has a group of vcpus. If on cpuM, vcpu_A_1 holds bitlock X (HPTE_V_HVLOCK), then is switched out, and on cpuN, vcpu_A_2 try to lock X in realmode, then cpuN will be caught in realmode for a long time. What makes things even worse if the following happens, On cpuM, bitlockX is hold, on cpuN, Y is hold. vcpu_B_2 try to lock Y on cpuM in realmode vcpu_A_2 try to lock X on cpuN in realmode Oops! deadlock happens Signed-off-by:
Liu Ping Fan <pingfank@linux.vnet.ibm.com> Reviewed-by:
Paul Mackerras <paulus@samba.org> Signed-off-by:
Alexander Graf <agraf@suse.de> Signed-off-by:
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Yan, Zheng authored
commit fc55d2c9 upstream. We also need to wake up 'safe' waiters if error occurs or request aborted. Otherwise sync(2)/fsync(2) may hang forever. Signed-off-by:
Yan, Zheng <zheng.z.yan@intel.com> Signed-off-by:
Sage Weil <sage@inktank.com> Signed-off-by:
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Yan, Zheng authored
commit eb1b8af3 upstream. Aborted requests usually get cleared when the reply is received. If MDS crashes, no reply will be received. So we need to cleanup aborted requests when re-sending requests. Signed-off-by:
Greg Farnum <greg@inktank.com> Signed-off-by:
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Johan Hovold authored
commit 6f648546 upstream. Fix race in generic write implementation, which could lead to temporarily degraded throughput. The current generic write implementation introduced by commit 27c7acf2 ("USB: serial: reimplement generic fifo-based writes") has always had this bug, although it's fairly hard to trigger and the consequences are not likely to be noticed. Specifically, a write() on one CPU while the completion handler is running on another could result in only one of the two write urbs being utilised to empty the remainder of the write fifo (unless there is a second write() that doesn't race during that time). Signed-off-by:
Johan Hovold <jhovold@gmail.com> Signed-off-by:
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- 20 Dec, 2013 26 commits
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Greg Kroah-Hartman authored
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Roger Quadros authored
commit 313a76ee upstream. In _ocp_softreset(), after _set_softreset() + write_sysconfig(), the hwmod's sysc_cache will always contain SOFTRESET bit set so all further writes to sysconfig using this cache will initiate a repeated SOFTRESET e.g. enable_sysc(). This is true for OMAP3 like platforms that have RESET_DONE status in the SYSSTATUS register and so the the SOFTRESET bit in SYSCONFIG is not automatically cleared. It is not a problem for OMAP4 like platforms that indicate RESET completion by clearing the SOFTRESET bit in the SYSCONFIG register. This repeated SOFTRESET is undesired and was the root cause of USB host issues on OMAP3 platforms when hwmod was allowed to do the SOFTRESET for the USB Host module. To fix this we clear the SOFTRESET bit and update the sysconfig register + sysc_cache using write_sysconfig(). Signed-off-by:
Roger Quadros <rogerq@ti.com> Tested-by: Tomi Valkeinen <tomi.valkeinen@ti.com> # Panda, BeagleXM [paul@pwsan.com: renamed _clr_softreset() to _clear_softreset()] Signed-off-by:
Paul Walmsley <paul@pwsan.com> Signed-off-by:
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Greg Kroah-Hartman authored
It turns out that commit: d3f7d56a was applied to the tree twice, which didn't hurt anything, but it's good to fix this up. Reported-by:
Veaceslav Falico <veaceslav@falico.eu> Cc: David S. Miller <davem@davemloft.net> Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: Richard Weinberger <richard@nod.at> Cc: Shawn Landden <shawnlandden@gmail.com> Cc: Tom Herbert <therbert@google.com> Signed-off-by:
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Mikulas Patocka authored
commit bbd465df upstream. This patch fixes warnings due to missing lock on write error path. WARNING: at fs/hpfs/hpfs_fn.h:353 hpfs_truncate+0x75/0x80 [hpfs]() Hardware name: empty Pid: 26563, comm: dd Tainted: P O 3.9.4 #12 Call Trace: hpfs_truncate+0x75/0x80 [hpfs] hpfs_write_begin+0x84/0x90 [hpfs] _hpfs_bmap+0x10/0x10 [hpfs] generic_file_buffered_write+0x121/0x2c0 __generic_file_aio_write+0x1c7/0x3f0 generic_file_aio_write+0x7c/0x100 do_sync_write+0x98/0xd0 hpfs_file_write+0xd/0x50 [hpfs] vfs_write+0xa2/0x160 sys_write+0x51/0xa0 page_fault+0x22/0x30 system_call_fastpath+0x1a/0x1f Signed-off-by:
Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by:
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Alan authored
commit dace8bbf upstream. If loaded with isapnp = 0 the driver explodes. This is catching people out now and then. What should happen in the working case is a complete mystery and the code appears terminally confused, but we can at least make the error path work properly. Signed-off-by:
Alan Cox <alan@linux.intel.com> Reviewed-by:
Guenter Roeck <linux@roeck-us.net> Signed-off-by:
Wim Van Sebroeck <wim@iguana.be> Partially-Resolves-bug: https://bugzilla.kernel.org/show_bug.cgi?id=53991Signed-off-by:
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H Hartley Sweeten authored
commit f6b316bc upstream. Use comedi_dio_update_state() to handle the boilerplate code to update the subdevice s->state. Also, fix a bug where the state of the channels is returned in data[0]. The comedi core expects it to be returned in data[1]. Signed-off-by:
H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by:
Ian Abbott <abbotti@mev.co.uk> Signed-off-by:
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Ian Abbott authored
commit 2fd2bdfc upstream. pcmuio_detach() is called by the comedi core even if pcmuio_attach() returned an error, so `dev->private` might be `NULL`. Check for that before dereferencing it. Also, as pointed out by Dan Carpenter, there is no need to check the pointer passed to `kfree()` is non-NULL, so remove that check. Signed-off-by:
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Helge Deller authored
commit 3873d064 upstream. When compiling a 32bit kernel with CONFIG_LBDAF=n the compiler complains like shown below. Fix this warning by instead using sector_div() which is provided by the kernel.h header file. fs/nfs/blocklayout/extents.c: In function ‘normalize’: include/asm-generic/div64.h:43:28: warning: comparison of distinct pointer types lacks a cast [enabled by default] fs/nfs/blocklayout/extents.c:47:13: note: in expansion of macro ‘do_div’ nfs/blocklayout/extents.c:47:2: warning: right shift count >= width of type [enabled by default] fs/nfs/blocklayout/extents.c:47:2: warning: passing argument 1 of ‘__div64_32’ from incompatible pointer type [enabled by default] include/asm-generic/div64.h:35:17: note: expected ‘uint64_t *’ but argument is of type ‘sector_t *’ extern uint32_t __div64_32(uint64_t *dividend, uint32_t divisor); Signed-off-by:
Helge Deller <deller@gmx.de> Signed-off-by:
Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by:
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Mikulas Patocka authored
commit 5b2d0657 upstream. The dm_round_up function may overflow to zero. In this case, dm_table_create() must fail rather than go on to allocate an empty array with alloc_targets(). This fixes a possible memory corruption that could be caused by passing too large a number in "param->target_count". Signed-off-by:
Mikulas Patocka <mpatocka@redhat.com> Signed-off-by:
Mike Snitzer <snitzer@redhat.com> Signed-off-by:
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Mikulas Patocka authored
commit 718822c1 upstream. The dm-delay target uses a shared workqueue for multiple instances. This can cause deadlock if two or more dm-delay targets are stacked on the top of each other. This patch changes dm-delay to use a per-instance workqueue. Signed-off-by:
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Mikulas Patocka authored
commit 4cb57ab4 upstream. Some module parameters in dm-bufio are read-only. These parameters inform the user about memory consumption. They are not supposed to be changed by the user. However, despite being read-only, these parameters can be set on modprobe or insmod command line, for example: modprobe dm-bufio current_allocated_bytes=12345 The kernel doesn't expect that these variables can be non-zero at module initialization and if the user sets them, it results in BUG. This patch initializes the variables in the module init routine, so that user-supplied values are ignored. Signed-off-by:
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Matthew Garrett authored
commit 04bf9ba7 upstream. UEFI time services are often broken once we're in virtual mode. We were already refusing to use them on 64-bit systems, but it turns out that they're also broken on some 32-bit firmware, including the Dell Venue. Disable them for now, we can revisit once we have the 1:1 mappings code incorporated. Signed-off-by:
Matthew Garrett <matthew.garrett@nebula.com> Link: http://lkml.kernel.org/r/1385754283-2464-1-git-send-email-matthew.garrett@nebula.com Cc: Matt Fleming <matt.fleming@intel.com> Signed-off-by:
H. Peter Anvin <hpa@linux.intel.com> Signed-off-by:
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Alex Deucher authored
commit 0ca223b0 upstream. Some boards seem to have garbage in the upper 16 bits of the vram size register. Check for this and clamp the size properly. Fixes boards reporting bogus amounts of vram. Signed-off-by:
Alex Deucher <alexander.deucher@amd.com> Signed-off-by:
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Johannes Berg authored
commit 051a41fa upstream. Multicast frames can't be transmitted as part of an aggregation session (such a session couldn't even be set up) so don't try to reorder them. Trying to do so would cause the reorder to stop working correctly since multicast QoS frames (as transmitted by the Aruba APs this was found with) would cause sequence number confusion in the buffer. Reported-by:
Blaise Gassend <blaise@suitabletech.com> Signed-off-by:
Johannes Berg <johannes.berg@intel.com> Signed-off-by:
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Paul Moore authored
commit 446b8024 upstream. In selinux_ip_postroute() we perform access checks based on the packet's security label. For locally generated traffic we get the packet's security label from the associated socket; this works in all cases except for TCP SYN-ACK packets. In the case of SYN-ACK packet's the correct security label is stored in the connection's request_sock, not the server's socket. Unfortunately, at the point in time when selinux_ip_postroute() is called we can't query the request_sock directly, we need to recreate the label using the same logic that originally labeled the associated request_sock. See the inline comments for more explanation. Reported-by:
Janak Desai <Janak.Desai@gtri.gatech.edu> Tested-by:
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Paul Moore authored
commit 47180068 upstream. In selinux_ip_output() we always label packets based on the parent socket. While this approach works in almost all cases, it doesn't work in the case of TCP SYN-ACK packets when the correct label is not the label of the parent socket, but rather the label of the larval socket represented by the request_sock struct. Unfortunately, since the request_sock isn't queued on the parent socket until *after* the SYN-ACK packet is sent, we can't lookup the request_sock to determine the correct label for the packet; at this point in time the best we can do is simply pass/NF_ACCEPT the packet. It must be said that simply passing the packet without any explicit labeling action, while far from ideal, is not terrible as the SYN-ACK packet will inherit any IP option based labeling from the initial connection request so the label *should* be correct and all our access controls remain in place so we shouldn't have to worry about information leaks. Reported-by:
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Linus Pizunski authored
commit eb3c2272 upstream. Update month and day of month to the alarm month/day instead of current day/month when setting the RTC alarm mask. Signed-off-by:
Linus Pizunski <linus@narrativeteam.com> Signed-off-by:
Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
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Christian Engelmayer authored
commit 4ef38351 upstream. This patch supports the separate handling of the USB transfer buffer length and the length of the buffer used for multi packet support. For devices supporting multiple report or diagnostic packets, the USB transfer size is now limited to the USB endpoints wMaxPacketSize - otherwise it defaults to the configured report packet size as before. This fixes an issue where event reporting can be delayed for an arbitrary time for multi packet devices. For instance the report size for eGalax devices is defined to the 16 byte maximum diagnostic packet size as opposed to the 5 byte report packet size. In case the driver requests 16 byte from the USB interrupt endpoint, the USB host controller driver needs to split up the request into 2 accesses according to the endpoints wMaxPacketSize of 8 byte. When the first transfer is answered by the eGalax device with not less than the full 8 byte requested, the host controller has got no way of knowing whether the touch controller has got additional data queued and will issue the second transfer. If per example a liftoff event finishes at such a wMaxPacketSize boundary, the data will not be available to the usbtouch driver until a further event is triggered and transfered to the host. From user perspective the BTN_TOUCH release event in this case is stuck until the next touch down event. Signed-off-by:
Christian Engelmayer <christian.engelmayer@frequentis.com> Signed-off-by:
Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by:
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Fangxiaozhi (Franko) authored
commit 2bf308d7 upstream. Add new supporting declarations to option.c, to support Huawei new devices with new bInterfaceProtocol value. Signed-off-by:
fangxiaozhi <huananhu@huawei.com> Signed-off-by:
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Gustavo Zacarias authored
commit 8f173e22 upstream. Interface 1 on this device isn't for option to bind to otherwise an oops on usb_wwan with log flooding will happen when accessing the port: tty_release: ttyUSB1: read/write wait queue active! It doesn't seem to respond to QMI if it's added to qmi_wwan so don't add it there - it's likely used by the card reader. Signed-off-by:
Gustavo Zacarias <gustavo@zacarias.com.ar> Signed-off-by:
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Michael Grzeschik authored
commit 2bac51a1 upstream. The delayed_status value is used to keep track of status response packets on ep0. It needs to be reset or the set_config function would still delay the answer, if the usb device got unplugged while waiting for setup_continue to be called. Signed-off-by:
Michael Grzeschik <m.grzeschik@pengutronix.de> Signed-off-by:
Felipe Balbi <balbi@ti.com> Signed-off-by:
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Alan Stern authored
commit a535d81c upstream. The dwc3 UDC driver doesn't implement endpoint wedging correctly. When an endpoint is wedged, the gadget driver should be allowed to clear the wedge by calling usb_ep_clear_halt(). Only the host is prevented from resetting the endpoint. This patch fixes the implementation. Signed-off-by:
Alan Stern <stern@rowland.harvard.edu> Tested-by:
Pratyush Anand <pratyush.anand@st.com> Signed-off-by:
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Julius Werner authored
commit 2d51f3cd upstream. This patch adds a check for USB_STATE_NOTATTACHED to the hub_port_warm_reset_required() workaround for ports that end up in Compliance Mode in hub_events() when trying to decide which reset function to use. Trying to call usb_reset_device() with a NOTATTACHED device will just fail and leave the port broken. Signed-off-by:
Julius Werner <jwerner@chromium.org> Acked-by:
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Linus Torvalds authored
commit f12d5bfc upstream. The hugepage code had the exact same bug that regular pages had in commit 7485d0d3 ("futexes: Remove rw parameter from get_futex_key()"). The regular page case was fixed by commit 9ea71503 ("futex: Fix regression with read only mappings"), but the transparent hugepage case (added in a5b338f2: "thp: update futex compound knowledge") case remained broken. Found by Dave Jones and his trinity tool. Reported-and-tested-by:
Dave Jones <davej@fedoraproject.org> Acked-by:
Thomas Gleixner <tglx@linutronix.de> Cc: Mel Gorman <mgorman@suse.de> Cc: Darren Hart <dvhart@linux.intel.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Oleg Nesterov <oleg@redhat.com> Signed-off-by:
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Dan Carpenter authored
commit 31978b5c upstream. If we allocate less than sizeof(struct attrlist) then we end up corrupting memory or doing a ZERO_PTR_SIZE dereference. This can only be triggered with CAP_SYS_ADMIN. Reported-by:
Nico Golde <nico@ngolde.de> Reported-by:
Fabian Yamaguchi <fabs@goesec.de> Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by:
Dave Chinner <dchinner@redhat.com> Signed-off-by:
Ben Myers <bpm@sgi.com> Signed-off-by:
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Brian Carnes authored
commit cf7559bc upstream. The wrong mask is used, which causes some fan speed control modes (pwmX_enable) to be incorrectly reported, and some modes to be impossible to set. [JD: add subject and description.] Signed-off-by:
Brian Carnes <bmcarnes@gmail.com> Signed-off-by:
Jean Delvare <khali@linux-fr.org> Signed-off-by:
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