- 12 Nov, 2015 14 commits
-
-
Paul Burton authored
commit 1e5fb282 upstream. The has_mt macro ended with a branch, leaving its callers with a delay slot that would be executed if Config3.MT is not set. However it would not be executed if Config3 (or earlier Config registers) don't exist which makes it somewhat inconsistent at best. Fill the delay slot in the macro & fix the mips_cps_boot_vpes caller appropriately. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Markos Chandras <markos.chandras@imgtec.com> Cc: James Hogan <james.hogan@imgtec.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/10865/Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-
James Hogan authored
commit 53960059 upstream. If there is a DMA zone (usually 24bit = 16MB I believe), but no DMA32 zone, as is the case for some 32-bit kernels, then massage_gfp_flags() will cause DMA memory allocated for devices with a 32..63-bit coherent_dma_mask to fall back to using __GFP_DMA, even though there may only be 32-bits of physical address available anyway. Correct that case to compare against a mask the size of phys_addr_t instead of always using a 64-bit mask. Signed-off-by: James Hogan <james.hogan@imgtec.com> Fixes: a2e715a8 ("MIPS: DMA: Fix computation of DMA flags from device's coherent_dma_mask.") Cc: Ralf Baechle <ralf@linux-mips.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/9610/Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-
Alex Deucher authored
commit ae93580e upstream. If driver backlight control is disabled, either by driver parameter or default per-asic setting, revert to the old behavior. Fixes a regression in commit: 4281f46eReviewed-by: Michel Dänzer <michel.daenzer@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-
Alex Deucher authored
commit 4cee6a90 upstream. So that the bl encoder will be null if the GPU does not control the backlight. Reviewed-by: Michel Dänzer <michel.daenzer@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-
Michel Dänzer authored
commit 4281f46e upstream. Instead of only enabling the backlight (which seems to set it to max brightness), just re-set the current backlight level, which also takes care of enabling the backlight if necessary. Only the radeon_atom_encoder_dpms_dig part tested on a Kaveri laptop, the radeon_atom_encoder_dpms_avivo part is only compile tested. Signed-off-by: Michel Dänzer <michel.daenzer@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-
shengyong authored
commit 7c7feb2e upstream. UBI: attaching mtd1 to ubi0 UBI: scanning is finished UBI error: init_volumes: not enough PEBs, required 706, available 686 UBI error: ubi_wl_init: no enough physical eraseblocks (-20, need 1) UBI error: ubi_attach_mtd_dev: failed to attach mtd1, error -12 <= NOT ENOMEM UBI error: ubi_init: cannot attach mtd1 If available PEBs are not enough when initializing volumes, return -ENOSPC directly. If available PEBs are not enough when initializing WL, return -ENOSPC instead of -ENOMEM. Signed-off-by: Sheng Yong <shengyong1@huawei.com> Signed-off-by: Richard Weinberger <richard@nod.at> Reviewed-by: David Gstir <david@sigma-star.at> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-
Richard Weinberger authored
commit 281fda27 upstream. Make sure that data_size is less than LEB size. Otherwise a handcrafted UBI image is able to trigger an out of bounds memory access in ubi_compare_lebs(). Signed-off-by: Richard Weinberger <richard@nod.at> Reviewed-by: David Gstir <david@sigma-star.at> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-
Andreas Schwab authored
commit 8474ba74 upstream. Make sure the compiler does not modify arguments of syscall functions. This can happen if the compiler generates a tailcall to another function. For example, without asmlinkage_protect sys_openat is compiled into this function: sys_openat: clr.l %d0 move.w 18(%sp),%d0 move.l %d0,16(%sp) jbra do_sys_open Note how the fourth argument is modified in place, modifying the register %d4 that gets restored from this stack slot when the function returns to user-space. The caller may expect the register to be unmodified across system calls. Signed-off-by: Andreas Schwab <schwab@linux-m68k.org> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-
Adrian Hunter authored
commit b5cabbcb upstream. A copy of /proc/kcore containing the kernel text can be made to the buildid cache. e.g. perf buildid-cache -v -k /proc/kcore To workaround objdump limitations, a copy is also made when annotating against /proc/kcore. The copying process stops working from libelf about v1.62 onwards (the problem was found with v1.63). The cause is that a call to gelf_getphdr() in kcore__add_phdr() fails because additional validation has been added to gelf_getphdr(). The use of gelf_getphdr() is a misguided attempt to get default initialization of the Gelf_Phdr structure. That should not be necessary because every member of the Gelf_Phdr structure is subsequently assigned. So just remove the call to gelf_getphdr(). Similarly, a call to gelf_getehdr() in gelf_kcore__init() can be removed also. Committer notes: Note to stable@kernel.org, from Adrian in the cover letter for this patchkit: The "Fix copying of /proc/kcore" problem goes back to v3.13 if you think it is important enough for stable. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1443089122-19082-3-git-send-email-adrian.hunter@intel.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-
Kapileshwar Singh authored
commit c2e4b24f upstream. When a trace recorded on a 32-bit device is processed with a 64-bit binary, the higher 32-bits of the address need to ignored. The lack of this results in the output of the 64-bit pointer value to the trace as the 32-bit address lookup fails in find_printk(). Before: burn-1778 [003] 548.600305: bputs: 0xc0046db2s: 2cec5c058d98c After: burn-1778 [003] 548.600305: bputs: 0xc0046db2s: RT throttling activated The problem occurs in PRINT_FIELD when the field is recognized as a pointer to a string (of the type const char *) Heterogeneous architectures cases below can arise and should be handled: * Traces recorded using 32-bit addresses processed on a 64-bit machine * Traces recorded using 64-bit addresses processed on a 32-bit machine Reported-by: Juri Lelli <juri.lelli@arm.com> Signed-off-by: Kapileshwar Singh <kapileshwar.singh@arm.com> Reviewed-by: Steven Rostedt <rostedt@goodmis.org> Cc: David Ahern <dsahern@gmail.com> Cc: Javi Merino <javi.merino@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/1442928123-13824-1-git-send-email-kapileshwar.singh@arm.comSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-
Salva Peiró authored
commit 4b618433 upstream. The dgnc_mgmt_ioctl() code fails to initialize the 16 _reserved bytes of struct digi_dinfo after the ->dinfo_nboards member. Add an explicit memset(0) before filling the structure to avoid the info leak. Signed-off-by: Salva Peiró <speirofr@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reference: CVE-2015-7885 Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-
Salva Peiró authored
commit eda98796 upstream. The vivid_fb_ioctl() code fails to initialize the 16 _reserved bytes of struct fb_vblank after the ->hcount member. Add an explicit memset(0) before filling the structure to avoid the info leak. Signed-off-by: Salva Peiró <speirofr@gmail.com> Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com> Reference: CVE-2015-7884 Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-
Ben Hutchings authored
commit 4ab42d78 upstream. Currently slhc_init() treats out-of-range values of rslots and tslots as equivalent to 0, except that if tslots is too large it will dereference a null pointer (CVE-2015-7799). Add a range-check at the top of the function and make it return an ERR_PTR() on error instead of NULL. Change the callers accordingly. Compile-tested only. Reported-by: 郭永刚 <guoyonggang@360.cn> References: http://article.gmane.org/gmane.comp.security.oss.general/17908Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-
Ben Hutchings authored
commit 0baa57d8 upstream. Compile-tested only. Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net> Reference: CVE-2015-7799 Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-
- 30 Oct, 2015 1 commit
-
-
Kamal Mostafa authored
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-
- 28 Oct, 2015 2 commits
-
-
Thomas Hellstrom authored
commit ed7d78b2 upstream. The commit "drm/vmwgfx: Fix up user_dmabuf refcounting", while fixing a kernel crash introduced a NULL pointer dereference on older hardware. Fix this. Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Reviewed-by: Sinclair Yeh <syeh@vmware.com> Reviewed-by: Brian Paul <brianp@vmware.com> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-
Filipe Manana authored
commit 808f80b4 upstream. My previous fix in commit 005efedf ("Btrfs: fix read corruption of compressed and shared extents") was effective only if the compressed extents cover a file range with a length that is not a multiple of 16 pages. That's because the detection of when we reached a different range of the file that shares the same compressed extent as the previously processed range was done at extent_io.c:__do_contiguous_readpages(), which covers subranges with a length up to 16 pages, because extent_readpages() groups the pages in clusters no larger than 16 pages. So fix this by tracking the start of the previously processed file range's extent map at extent_readpages(). The following test case for fstests reproduces the issue: seq=`basename $0` seqres=$RESULT_DIR/$seq echo "QA output created by $seq" tmp=/tmp/$$ status=1 # failure is the default! trap "_cleanup; exit \$status" 0 1 2 3 15 _cleanup() { rm -f $tmp.* } # get standard environment, filters and checks . ./common/rc . ./common/filter # real QA test starts here _need_to_be_root _supported_fs btrfs _supported_os Linux _require_scratch _require_cloner rm -f $seqres.full test_clone_and_read_compressed_extent() { local mount_opts=$1 _scratch_mkfs >>$seqres.full 2>&1 _scratch_mount $mount_opts # Create our test file with a single extent of 64Kb that is going to # be compressed no matter which compression algo is used (zlib/lzo). $XFS_IO_PROG -f -c "pwrite -S 0xaa 0K 64K" \ $SCRATCH_MNT/foo | _filter_xfs_io # Now clone the compressed extent into an adjacent file offset. $CLONER_PROG -s 0 -d $((64 * 1024)) -l $((64 * 1024)) \ $SCRATCH_MNT/foo $SCRATCH_MNT/foo echo "File digest before unmount:" md5sum $SCRATCH_MNT/foo | _filter_scratch # Remount the fs or clear the page cache to trigger the bug in # btrfs. Because the extent has an uncompressed length that is a # multiple of 16 pages, all the pages belonging to the second range # of the file (64K to 128K), which points to the same extent as the # first range (0K to 64K), had their contents full of zeroes instead # of the byte 0xaa. This was a bug exclusively in the read path of # compressed extents, the correct data was stored on disk, btrfs # just failed to fill in the pages correctly. _scratch_remount echo "File digest after remount:" # Must match the digest we got before. md5sum $SCRATCH_MNT/foo | _filter_scratch } echo -e "\nTesting with zlib compression..." test_clone_and_read_compressed_extent "-o compress=zlib" _scratch_unmount echo -e "\nTesting with lzo compression..." test_clone_and_read_compressed_extent "-o compress=lzo" status=0 exit Signed-off-by: Filipe Manana <fdmanana@suse.com> Tested-by: Timofey Titovets <nefelim4ag@gmail.com> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-
- 26 Oct, 2015 23 commits
-
-
Wilson Kok authored
commit 41fc0143 upstream. dump_rules returns skb length and not error. But when family == AF_UNSPEC, the caller of dump_rules assumes that it returns an error. Hence, when family == AF_UNSPEC, we continue trying to dump on -EMSGSIZE errors resulting in incorrect dump idx carried between skbs belonging to the same dump. This results in fib rule dump always only dumping rules that fit into the first skb. This patch fixes dump_rules to return error so that we exit correctly and idx is correctly maintained between skbs that are part of the same dump. Signed-off-by: Wilson Kok <wkok@cumulusnetworks.com> Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-
Richard Laing authored
commit 25b4a44c upstream. In the IPv6 multicast routing code the mrt_lock was not being released correctly in the MFC iterator, as a result adding or deleting a MIF would cause a hang because the mrt_lock could not be acquired. This fix is a copy of the code for the IPv4 case and ensures that the lock is released correctly. Signed-off-by: Richard Laing <richard.laing@alliedtelesis.co.nz> Acked-by: Cong Wang <cwang@twopensource.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-
Atsushi Nemoto authored
[ Upstream commit 4548a697 ] tse_poll() calls __napi_complete() with irq enabled. This leads napi poll_list corruption and may stop all napi drivers working. Use napi_complete() instead of __napi_complete(). Signed-off-by: Atsushi Nemoto <nemoto@toshiba-tops.co.jp> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-
Eugene Shatokhin authored
commit f50791ac upstream. It is needed to check EVENT_NO_RUNTIME_PM bit of dev->flags in usbnet_stop(), but its value should be read before it is cleared when dev->flags is set to 0. The problem was spotted and the fix was provided by Oliver Neukum <oneukum@suse.de>. Signed-off-by: Eugene Shatokhin <eugene.shatokhin@rosalab.ru> Acked-by: Oliver Neukum <oneukum@suse.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-
Peng Tao authored
commit 048883e0 upstream. We really want sizeof(struct page *) instead. Otherwise we limit maximum IO size to 64 pages rather than 512 pages on a 64bit system. Fixes 2e11f829(nfs: cap request size to fit a kmalloced page array). Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Peng Tao <tao.peng@primarydata.com> Fixes: 2e11f829 ("nfs: cap request size to fit a kmalloced page array") Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-
Daniel Borkmann authored
commit 1853c949 upstream. Ken-ichirou reported that running netlink in mmap mode for receive in combination with nlmon will throw a NULL pointer dereference in __kfree_skb() on nlmon_xmit(), in my case I can also trigger an "unable to handle kernel paging request". The problem is the skb_clone() in __netlink_deliver_tap_skb() for skbs that are mmaped. I.e. the cloned skb doesn't have a destructor, whereas the mmap netlink skb has it pointed to netlink_skb_destructor(), set in the handler netlink_ring_setup_skb(). There, skb->head is being set to NULL, so that in such cases, __kfree_skb() doesn't perform a skb_release_data() via skb_release_all(), where skb->head is possibly being freed through kfree(head) into slab allocator, although netlink mmap skb->head points to the mmap buffer. Similarly, the same has to be done also for large netlink skbs where the data area is vmalloced. Therefore, as discussed, make a copy for these rather rare cases for now. This fixes the issue on my and Ken-ichirou's test-cases. Reference: http://thread.gmane.org/gmane.linux.network/371129 Fixes: bcbde0d4 ("net: netlink: virtual tap device management") Reported-by: Ken-ichirou MATSUZAWA <chamaken@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Tested-by: Ken-ichirou MATSUZAWA <chamaken@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-
Grazvydas Ignotas authored
commit 1dbdad75 upstream. The i2c5 pinctrl offsets are wrong. If the bootloader doesn't set the pins up, communication with tca6424a doesn't work (controller timeouts) and it is not possible to enable HDMI. Fixes: 9be495c4 ("ARM: dts: omap5-evm: Add I2c pinctrl data") Signed-off-by: Grazvydas Ignotas <notasas@gmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-
Florian Westphal authored
commit 205ee117 upstream. like nf_log_unset, nf_log_unregister must not reset the list of loggers. Otherwise, a call to nf_log_unregister() will render loggers of other nf protocols unusable: iptables -A INPUT -j LOG modprobe nf_log_arp ; rmmod nf_log_arp iptables -A INPUT -j LOG iptables: No chain/target/match by that name Fixes: 30e0c6a6 ("netfilter: nf_log: prepare net namespace support for loggers") Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-
Robert Jarzmik authored
commit 3c8f7710 upstream. The previous fix of pxa library support, which was introduced to fix the library dependency, broke the previous SoC behavior, where a machine code binding pxa2xx-ac97 with a coded relied on : - sound/soc/pxa/pxa2xx-ac97.c - sound/soc/codecs/XXX.c For example, the mioa701_wm9713.c machine code is currently broken. The "select ARM" statement wrongly selects the soc/arm/pxa2xx-ac97 for compilation, as per an unfortunate fate SND_PXA2XX_AC97 is both declared in sound/arm/Kconfig and sound/soc/pxa/Kconfig. Fix this by ensuring that SND_PXA2XX_SOC correctly triggers the correct pxa2xx-ac97 compilation. Fixes: 846172df ("ASoC: fix SND_PXA2XX_LIB Kconfig warning") Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-
Michael S. Tsirkin authored
commit 3ea79249 upstream. Upon TUNSETSNDBUF, macvtap reads the requested sndbuf size into a local variable u. commit 39ec7de7 ("macvtap: fix uninitialized access on TUNSETIFF") changed its type to u16 (which is the right thing to do for all other macvtap ioctls), breaking all values > 64k. The value of TUNSETSNDBUF is actually a signed 32 bit integer, so the right thing to do is to read it into an int. Cc: David S. Miller <davem@davemloft.net> Fixes: 39ec7de7 ("macvtap: fix uninitialized access on TUNSETIFF") Reported-by: Mark A. Peloquin Bisected-by: Matthew Rosato <mjrosato@linux.vnet.ibm.com> Reported-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Tested-by: Matthew Rosato <mjrosato@linux.vnet.ibm.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-
Eric Dumazet authored
commit 4671fc6d upstream. When changing rss key, we do not want to overwrite user provided key by the one provided by netdev_rss_key_fill(), which is the host random key generated at boot time. Fixes: 947cbb0a ("net/mlx4_en: Support for configurable RSS hash function") Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Eyal Perry <eyalpe@mellanox.com> CC: Amir Vadai <amirv@mellanox.com> Acked-by: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-
Eric Dumazet authored
commit 675ee231 upstream. RST packets sent on behalf of TCP connections with TS option (RFC 7323 TCP timestamps) have incorrect TS val (set to 0), but correct TS ecr. A > B: Flags [S], seq 0, win 65535, options [mss 1000,nop,nop,TS val 100 ecr 0], length 0 B > A: Flags [S.], seq 2444755794, ack 1, win 28960, options [mss 1460,nop,nop,TS val 7264344 ecr 100], length 0 A > B: Flags [.], ack 1, win 65535, options [nop,nop,TS val 110 ecr 7264344], length 0 B > A: Flags [R.], seq 1, ack 1, win 28960, options [nop,nop,TS val 0 ecr 110], length 0 We need to call skb_mstamp_get() to get proper TS val, derived from skb->skb_mstamp Note that RFC 1323 was advocating to not send TS option in RST segment, but RFC 7323 recommends the opposite : Once TSopt has been successfully negotiated, that is both <SYN> and <SYN,ACK> contain TSopt, the TSopt MUST be sent in every non-<RST> segment for the duration of the connection, and SHOULD be sent in an <RST> segment (see Section 5.2 for details) Note this RFC recommends to send TS val = 0, but we believe it is premature : We do not know if all TCP stacks are properly handling the receive side : When an <RST> segment is received, it MUST NOT be subjected to the PAWS check by verifying an acceptable value in SEG.TSval, and information from the Timestamps option MUST NOT be used to update connection state information. SEG.TSecr MAY be used to provide stricter <RST> acceptance checks. In 5 years, if/when all TCP stack are RFC 7323 ready, we might consider to decide to send TS val = 0, if it buys something. Fixes: 7faee5c0 ("tcp: remove TCP_SKB_CB(skb)->when") Signed-off-by: Eric Dumazet <edumazet@google.com> Acked-by: Yuchung Cheng <ycheng@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-
Doug Anderson authored
commit 7ae85dc7 upstream. In (23a4e405 arm: kgdb: Handle read-only text / modules) we moved to using patch_text() to set breakpoints so that we could handle the case when we had CONFIG_DEBUG_RODATA. That patch used patch_text(). Unfortunately, patch_text() assumes that we're not in atomic context when it runs since it needs to grab a mutex and also wait for other CPUs to stop (which it does with a completion). This would result in a stack crawl if you had CONFIG_DEBUG_ATOMIC_SLEEP and tried to set a breakpoint in kgdb. The crawl looked something like: BUG: scheduling while atomic: swapper/0/0/0x00010007 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.2.0-rc7-00133-geb63b34b #1073 Hardware name: Rockchip (Device Tree) (unwind_backtrace) from [<c00133d4>] (show_stack+0x20/0x24) (show_stack) from [<c05400e8>] (dump_stack+0x84/0xb8) (dump_stack) from [<c004913c>] (__schedule_bug+0x54/0x6c) (__schedule_bug) from [<c054065c>] (__schedule+0x80/0x668) (__schedule) from [<c0540cfc>] (schedule+0xb8/0xd4) (schedule) from [<c0543a3c>] (schedule_timeout+0x2c/0x234) (schedule_timeout) from [<c05417c0>] (wait_for_common+0xf4/0x188) (wait_for_common) from [<c0541874>] (wait_for_completion+0x20/0x24) (wait_for_completion) from [<c00a0104>] (__stop_cpus+0x58/0x70) (__stop_cpus) from [<c00a0580>] (stop_cpus+0x3c/0x54) (stop_cpus) from [<c00a06c4>] (__stop_machine+0xcc/0xe8) (__stop_machine) from [<c00a0714>] (stop_machine+0x34/0x44) (stop_machine) from [<c00173e8>] (patch_text+0x28/0x34) (patch_text) from [<c001733c>] (kgdb_arch_set_breakpoint+0x40/0x4c) (kgdb_arch_set_breakpoint) from [<c00a0d68>] (kgdb_validate_break_address+0x2c/0x60) (kgdb_validate_break_address) from [<c00a0e90>] (dbg_set_sw_break+0x1c/0xdc) (dbg_set_sw_break) from [<c00a2e88>] (gdb_serial_stub+0x9c4/0xba4) (gdb_serial_stub) from [<c00a11cc>] (kgdb_cpu_enter+0x1f8/0x60c) (kgdb_cpu_enter) from [<c00a18cc>] (kgdb_handle_exception+0x19c/0x1d0) (kgdb_handle_exception) from [<c0016f7c>] (kgdb_compiled_brk_fn+0x30/0x3c) (kgdb_compiled_brk_fn) from [<c00091a4>] (do_undefinstr+0x1a4/0x20c) (do_undefinstr) from [<c001400c>] (__und_svc_finish+0x0/0x34) It turns out that when we're in kgdb all the CPUs are stopped anyway so there's no reason we should be calling patch_text(). We can instead directly call __patch_text() which assumes that CPUs have already been stopped. Fixes: 23a4e405 ("arm: kgdb: Handle read-only text / modules") Reported-by: Aapo Vienamo <avienamo@nvidia.com> Signed-off-by: Douglas Anderson <dianders@chromium.org> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Acked-by: Kees Cook <keescook@chromium.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-
Jiri Benc authored
commit 9dc2ad10 upstream. vxlan_setup is called when allocating the net_device, i.e. way before vxlan_newlink (or vxlan_dev_configure) is called. This means vxlan->default_dst is actually unset in vxlan_setup and the condition that sets needed_headroom always takes the else branch. Set the needed_headrom at the point when we have the information about the address family available. Fixes: e4c7ed41 ("vxlan: add ipv6 support") Fixes: 2853af6a ("vxlan: use dev->needed_headroom instead of dev->hard_header_len") CC: Cong Wang <cwang@twopensource.com> Signed-off-by: Jiri Benc <jbenc@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-
Nishanth Menon authored
commit a3b74709 upstream. When commit c4082d49 ("ARM: omap2+: board-generic: clean up the irq data from board file") cleaned up the direct usage of gic_of_init and omap_intc_of_init, it failed to clean up the macros properly. Since these macros are no longer used, lets just remove them. Fixes: c4082d49 ("ARM: omap2+: board-generic: clean up the irq data from board file") Reported-by: Carlos Hernandez <ceh@ti.com> Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-
Pablo Neira Ayuso authored
commit ad5001cc upstream. The nf_log_unregister() function needs to call synchronize_rcu() to make sure that the objects are not dereferenced anymore on module removal. Fixes: 5962815a ("netfilter: nf_log: use an array of loggers instead of list") Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-
Jesse Gross authored
commit ae5f2fb1 upstream. When support for megaflows was introduced, OVS needed to start installing flows with a mask applied to them. Since masking is an expensive operation, OVS also had an optimization that would only take the parts of the flow keys that were covered by a non-zero mask. The values stored in the remaining pieces should not matter because they are masked out. While this works fine for the purposes of matching (which must always look at the mask), serialization to netlink can be problematic. Since the flow and the mask are serialized separately, the uninitialized portions of the flow can be encoded with whatever values happen to be present. In terms of functionality, this has little effect since these fields will be masked out by definition. However, it leaks kernel memory to userspace, which is a potential security vulnerability. It is also possible that other code paths could look at the masked key and get uninitialized data, although this does not currently appear to be an issue in practice. This removes the mask optimization for flows that are being installed. This was always intended to be the case as the mask optimizations were really targetting per-packet flow operations. Fixes: 03f0d916 ("openvswitch: Mega flow implementation") Signed-off-by: Jesse Gross <jesse@nicira.com> Acked-by: Pravin B Shelar <pshelar@nicira.com> Signed-off-by: David S. Miller <davem@davemloft.net> [ kamal: backport to 3.19-stable: context ] Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-
Pablo Neira Ayuso authored
commit ba378ca9 upstream. Fix lookup of existing match/target structures in the corresponding list by skipping the family check if NFPROTO_UNSPEC is used. This is resulting in the allocation and insertion of one match/target structure for each use of them. So this not only bloats memory consumption but also severely affects the time to reload the ruleset from the iptables-compat utility. After this patch, iptables-compat-restore and iptables-compat take almost the same time to reload large rulesets. Fixes: 0ca743a5 ("netfilter: nf_tables: add compatibility layer for x_tables") Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-
Arnaldo Carvalho de Melo authored
commit caa47047 upstream. The original patch introducing this header wrote the number of CPUs available and online in one order and then swapped those values when reading, fix it. Before: # perf record usleep 1 # perf report --header-only | grep 'nrcpus \(online\|avail\)' # nrcpus online : 4 # nrcpus avail : 4 # echo 0 > /sys/devices/system/cpu/cpu2/online # perf record usleep 1 # perf report --header-only | grep 'nrcpus \(online\|avail\)' # nrcpus online : 4 # nrcpus avail : 3 # echo 0 > /sys/devices/system/cpu/cpu1/online # perf record usleep 1 # perf report --header-only | grep 'nrcpus \(online\|avail\)' # nrcpus online : 4 # nrcpus avail : 2 After the fix, bringing back the CPUs online: # perf report --header-only | grep 'nrcpus \(online\|avail\)' # nrcpus online : 2 # nrcpus avail : 4 # echo 1 > /sys/devices/system/cpu/cpu2/online # perf record usleep 1 # perf report --header-only | grep 'nrcpus \(online\|avail\)' # nrcpus online : 3 # nrcpus avail : 4 # echo 1 > /sys/devices/system/cpu/cpu1/online # perf record usleep 1 # perf report --header-only | grep 'nrcpus \(online\|avail\)' # nrcpus online : 4 # nrcpus avail : 4 Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Borislav Petkov <bp@suse.de> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@intel.com> Cc: Stephane Eranian <eranian@google.com> Cc: Wang Nan <wangnan0@huawei.com> Fixes: fbe96f29 ("perf tools: Make perf.data more self-descriptive (v8)") Link: http://lkml.kernel.org/r/20150911153323.GP23511@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-
Sudip Mukherjee authored
commit dd85ebf6 upstream. During the last close we are freeing spidev if spidev->spi is NULL, but just before checking if spidev->spi is NULL we are dereferencing it. Lets add a check there to avoid the NULL dereference. Fixes: 91690516 ("spi: spidev: Don't mangle max_speed_hz in underlying spi device") Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Reviewed-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Tested-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-
Alex Williamson authored
commit da2d03ea upstream. 932c435c ("PCI: Add dev_flags bit to access VPD through function 0") added PCI_DEV_FLAGS_VPD_REF_F0. Previously, we set the flag on every non-zero function of quirked devices. If a function turned out to be different from function 0, i.e., it had a different class, vendor ID, or device ID, the flag remained set but we didn't make VPD accessible at all. Flip this around so we only set PCI_DEV_FLAGS_VPD_REF_F0 for functions that are identical to function 0, and allow regular VPD access for any other functions. [bhelgaas: changelog, stable tag] Fixes: 932c435c ("PCI: Add dev_flags bit to access VPD through function 0") Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Bjorn Helgaas <helgaas@kernel.org> Acked-by: Myron Stowe <myron.stowe@redhat.com> Acked-by: Mark Rustad <mark.d.rustad@intel.com> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-
Alex Williamson authored
commit 9d924075 upstream. Commit 932c435c ("PCI: Add dev_flags bit to access VPD through function 0") passes PCI_SLOT(devfn) for the devfn parameter of pci_get_slot(). Generally this works because we're fairly well guaranteed that a PCIe device is at slot address 0, but for the general case, including conventional PCI, it's incorrect. We need to get the slot and then convert it back into a devfn. Fixes: 932c435c ("PCI: Add dev_flags bit to access VPD through function 0") Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: Bjorn Helgaas <helgaas@kernel.org> Acked-by: Myron Stowe <myron.stowe@redhat.com> Acked-by: Mark Rustad <mark.d.rustad@intel.com> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-
Steve French authored
commit ceb1b0b9 upstream. Kerberos, which is very important for security, was only enabled for CIFS not SMB2/SMB3 mounts (e.g. vers=3.0) Patch based on the information detailed in http://thread.gmane.org/gmane.linux.kernel.cifs/10081/focus=10307 to enable Kerberized SMB2/SMB3 a) SMB2_negotiate: enable/use decode_negTokenInit in SMB2_negotiate b) SMB2_sess_setup: handle Kerberos sectype and replicate Kerberos SMB1 processing done in sess_auth_kerberos Signed-off-by: Noel Power <noel.power@suse.com> Signed-off-by: Jim McDonough <jmcd@samba.org> Signed-off-by: Steve French <steve.french@primarydata.com> Signed-off-by: Kamal Mostafa <kamal@canonical.com>
-