- 11 Aug, 2017 34 commits
-
-
Arnaldo Carvalho de Melo authored
BugLink: http://bugs.launchpad.net/bugs/1705238 commit 7ea6856d upstream. To address new warnings emmited by gcc 7, e.g.:: CC /tmp/build/perf/util/intel-pt-decoder/intel-pt-pkt-decoder.o CC /tmp/build/perf/tests/parse-events.o util/intel-pt-decoder/intel-pt-pkt-decoder.c: In function 'intel_pt_pkt_desc': util/intel-pt-decoder/intel-pt-pkt-decoder.c:499:6: error: this statement may fall through [-Werror=implicit-fallthrough=] if (!(packet->count)) ^ util/intel-pt-decoder/intel-pt-pkt-decoder.c:501:2: note: here case INTEL_PT_CYC: ^~~~ CC /tmp/build/perf/util/intel-pt-decoder/intel-pt-decoder.o cc1: all warnings being treated as errors Acked-by:
Andi Kleen <ak@linux.intel.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-mf0hw789pu9x855us5l32c83@git.kernel.orgSigned-off-by:
Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
Stefan Bader <stefan.bader@canonical.com> Signed-off-by:
Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
-
Arnaldo Carvalho de Melo authored
BugLink: http://bugs.launchpad.net/bugs/1705238 commit 7b0214b7 upstream. The implicit fall through case label here is intended, so let us inform that to gcc >= 7: CC /tmp/build/perf/builtin-top.o builtin-top.c: In function 'display_thread': builtin-top.c:644:7: error: this statement may fall through [-Werror=implicit-fallthrough=] if (errno == EINTR) ^ builtin-top.c:647:3: note: here default: ^~~~~~~ Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-lmcfnnyx9ic0m6j0aud98p4e@git.kernel.orgSigned-off-by:
-
Arnaldo Carvalho de Melo authored
BugLink: http://bugs.launchpad.net/bugs/1705238 commit d64b721d upstream. The implicit fall through case label here is intended, so let us inform that to gcc >= 7: util/strfilter.c: In function 'strfilter_node__sprint': util/strfilter.c:270:6: error: this statement may fall through [-Werror=implicit-fallthrough=] if (len < 0) ^ util/strfilter.c:272:2: note: here case '!': ^~~~ cc1: all warnings being treated as errors Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-z2dpywg7u8fim000hjfbpyfm@git.kernel.orgSigned-off-by:
-
Arnaldo Carvalho de Melo authored
BugLink: http://bugs.launchpad.net/bugs/1705238 commit 94bdd5ed upstream. The implicit fall through case label here is intended, so let us inform that to gcc >= 7: CC /tmp/build/perf/util/string.o util/string.c: In function 'perf_atoll': util/string.c:22:7: error: this statement may fall through [-Werror=implicit-fallthrough=] if (*p) ^ util/string.c:24:3: note: here case '\0': ^~~~ Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-0ophb30v9apkk6o95el0rqlq@git.kernel.orgSigned-off-by:
-
Arnaldo Carvalho de Melo authored
BugLink: http://bugs.launchpad.net/bugs/1705238 commit b5bf1733 upstream. For cases where implicit fall through case labels are intended, to let us inform that to gcc >= 7: CC /tmp/build/perf/util/string.o util/string.c: In function 'perf_atoll': util/string.c:22:7: error: this statement may fall through [-Werror=implicit-fallthrough=] if (*p) ^ util/string.c:24:3: note: here case '\0': ^~~~ So we introduce: #define __fallthrough __attribute__ ((fallthrough)) And use it in such cases. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Cc: William Cohen <wcohen@redhat.com> Link: http://lkml.kernel.org/n/tip-qnpig0xfop4hwv6k4mv1wts5@git.kernel.orgSigned-off-by:
-
Cong Wang authored
BugLink: http://bugs.launchpad.net/bugs/1705238 commit f991af3d upstream. The retry logic for netlink_attachskb() inside sys_mq_notify() is nasty and vulnerable: 1) The sock refcnt is already released when retry is needed 2) The fd is controllable by user-space because we already release the file refcnt so we when retry but the fd has been just closed by user-space during this small window, we end up calling netlink_detachskb() on the error path which releases the sock again, later when the user-space closes this socket a use-after-free could be triggered. Setting 'sock' to NULL here should be sufficient to fix it. Reported-by:
GeneBlue <geneblue.mail@gmail.com> Signed-off-by:
Cong Wang <xiyou.wangcong@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Manfred Spraul <manfred@colorfullife.com> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by:
-
Boris Pismenny authored
BugLink: http://bugs.launchpad.net/bugs/1705238 commit 5ecce4c9 upstream. The ib_uverbs_create_ah() ind ib_uverbs_modify_qp() calls receive the port number from user input as part of its attributes and assumes it is valid. Down on the stack, that parameter is used to access kernel data structures. If the value is invalid, the kernel accesses memory it should not. To prevent this, verify the port number before using it. BUG: KASAN: use-after-free in ib_uverbs_create_ah+0x6d5/0x7b0 Read of size 4 at addr ffff880018d67ab8 by task syz-executor/313 BUG: KASAN: slab-out-of-bounds in modify_qp.isra.4+0x19d0/0x1ef0 Read of size 4 at addr ffff88006c40ec58 by task syz-executor/819 Fixes: 67cdb40c ("[IB] uverbs: Implement more commands") Cc: Yevgeny Kliteynik <kliteyn@mellanox.com> Cc: Tziporet Koren <tziporet@mellanox.com> Cc: Alex Polak <alexpo@mellanox.com> Signed-off-by:
Boris Pismenny <borisp@mellanox.com> Signed-off-by:
Leon Romanovsky <leon@kernel.org> Signed-off-by:
Doug Ledford <dledford@redhat.com> Signed-off-by:
-
Dan Carpenter authored
BugLink: http://bugs.launchpad.net/bugs/1705238 commit 57cb17e7 upstream. This function has two callers and neither are able to handle a NULL return. Really, -EINVAL is the correct thing return here anyway. This fixes some static checker warnings like: security/keys/encrypted-keys/encrypted.c:709 encrypted_key_decrypt() error: uninitialized symbol 'master_key'. Fixes: 7e70cb49 ("keys: add new key-type encrypted") Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Acked-by:
Mimi Zohar <zohar@linux.vnet.ibm.com> Signed-off-by:
James Morris <james.l.morris@oracle.com> Signed-off-by:
-
Bartosz Markowski authored
BugLink: http://bugs.launchpad.net/bugs/1705238 commit b08b5b53 upstream. Similarly to QCA6174, QCA9377 requires the CE5 configuration to be available for other feature. Use the ath10k_pci_override_ce_config() for it as well. This is required for TF2.0 firmware. Previous FW revisions were working fine without this patch. Fixes: a70587b3 ("ath10k: configure copy engine 5 for HTT messages") Signed-off-by:
Bartosz Markowski <bartosz.markowski@tieto.com> Signed-off-by:
Kalle Valo <kvalo@qca.qualcomm.com> Signed-off-by:
-
Paolo Abeni authored
BugLink: http://bugs.launchpad.net/bugs/1705238 commit 236222d3 upstream. According to the Intel datasheet, the REP MOVSB instruction exposes a pretty heavy setup cost (50 ticks), which hurts short string copy operations. This change tries to avoid this cost by calling the explicit loop available in the unrolled code for strings shorter than 64 bytes. The 64 bytes cutoff value is arbitrary from the code logic point of view - it has been selected based on measurements, as the largest value that still ensures a measurable gain. Micro benchmarks of the __copy_from_user() function with lengths in the [0-63] range show this performance gain (shorter the string, larger the gain): - in the [55%-4%] range on Intel Xeon(R) CPU E5-2690 v4 - in the [72%-9%] range on Intel Core i7-4810MQ Other tested CPUs - namely Intel Atom S1260 and AMD Opteron 8216 - show no difference, because they do not expose the ERMS feature bit. Signed-off-by:
Paolo Abeni <pabeni@redhat.com> Acked-by:
Ingo Molnar <mingo@kernel.org> Signed-off-by:
Mel Gorman <mgorman@techsingularity.net> Signed-off-by:
-
Markus Trippelsdorf authored
BugLink: http://bugs.launchpad.net/bugs/1705238 commit 7ebb9167 upstream. gcc-7 warns: In file included from arch/x86/tools/relocs_64.c:17:0: arch/x86/tools/relocs.c: In function ‘process_64’: arch/x86/tools/relocs.c:953:2: warning: argument 1 null where non-null expected [-Wnonnull] qsort(r->offset, r->count, sizeof(r->offset[0]), cmp_relocs); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ In file included from arch/x86/tools/relocs.h:6:0, from arch/x86/tools/relocs_64.c:1: /usr/include/stdlib.h:741:13: note: in a call to function ‘qsort’ declared here extern void qsort This happens because relocs16 is not used for ELF_BITS == 64, so there is no point in trying to sort it. Make the sort_relocs(&relocs16) call 32bit only. Signed-off-by:
Markus Trippelsdorf <markus@trippelsdorf.de> Link: http://lkml.kernel.org/r/20161215124513.GA289@x4Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
-
Andreas Gruenbacher authored
BugLink: http://bugs.launchpad.net/bugs/1705238 commit 961ae1d8 upstream. Before commit 88ffbf3e "GFS2: Use resizable hash table for glocks", glocks were freed via call_rcu to allow reading the glock hashtable locklessly using rcu. This was then changed to free glocks immediately, which made reading the glock hashtable unsafe. Bring back the original code for freeing glocks via call_rcu. Signed-off-by:
Andreas Gruenbacher <agruenba@redhat.com> Signed-off-by:
Bob Peterson <rpeterso@redhat.com> Signed-off-by:
-
Bjørn Mork authored
BugLink: http://bugs.launchpad.net/bugs/1705238 commit 996fab55 upstream. A new Sierra Wireless EM7305 device ID used in a Toshiba laptop. Reported-by:
Petr Kloc <petr_kloc@yahoo.com> Signed-off-by:
Bjørn Mork <bjorn@mork.no> Signed-off-by:
Johan Hovold <johan@kernel.org> Signed-off-by:
-
Johan Hovold authored
BugLink: http://bugs.launchpad.net/bugs/1705238 commit 8fb060da upstream. Add two Longcheer device-id entries which specifically enables a Telewell TW-3G HSPA+ branded modem (0x9801). Reported-by:
Teemu Likonen <tlikonen@iki.fi> Reported-by:
Lars Melin <larsm17@gmail.com> Tested-by:
-
Geert Uytterhoeven authored
BugLink: http://bugs.launchpad.net/bugs/1705238 commit 3091ae77 upstream. Update the sh_pfc_soc_info pointer after calling the SoC-specific initialization function, as it may have been updated to e.g. handle different SoC revisions. This makes sure the correct subdriver name is printed later. Fixes: 0c151062 ("sh-pfc: Add support for SoC-specific initialization") Signed-off-by:
Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by:
-
Uwe Kleine-König authored
BugLink: http://bugs.launchpad.net/bugs/1705238 commit da6c2add upstream. To set the mux mode of a pin two bits must be set. Up to now this is implemented using the following idiom: writel(mask, reg + CLR); writel(value, reg + SET); . This however results in the mux mode being 0 between the two writes. On my machine there is an IC's reset pin connected to LCD_D20. The bootloader configures this pin as GPIO output-high (i.e. not holding the IC in reset). When Linux reconfigures the pin to GPIO the short time LCD_D20 is muxed as LCD_D20 instead of GPIO_1_20 is enough to confuse the connected IC. The same problem is present for the pin's drive strength setting which is reset to low drive strength before using the right value. So instead of relying on the hardware to modify the register setting using two writes implement the bit toggling using read-modify-write. Fixes: 17723111 ("pinctrl: add pinctrl-mxs support") Signed-off-by:
Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by:
Shawn Guo <shawnguo@kernel.org> Signed-off-by:
Linus Walleij <linus.walleij@linaro.org> Signed-off-by:
-
Chen-Yu Tsai authored
BugLink: http://bugs.launchpad.net/bugs/1705238 commit 7903d4f5 upstream. We use well known standard names for functions that have name, such as I2C, SPI, SPDIF, etc.. Fix the function name of SPDIF, which was named OWA (One Wire Audio) based on Allwinner datasheets. Fixes: 4730f33f ("pinctrl: sunxi: add allwinner A83T PIO controller support") Signed-off-by:
Chen-Yu Tsai <wens@csie.org> Acked-by:
Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by:
-
Martin Blumenstingl authored
BugLink: http://bugs.launchpad.net/bugs/1705238 commit 97ba26b8 upstream. The nand_groups table uses different names for the NAND DQS pins than the GROUP() definition in meson8b_cbus_groups (nand_dqs_0 vs nand_dqs0). This prevents using the NAND DQS pins in the devicetree. Fix this by ensuring that the GROUP() definition and the meson8b_cbus_groups use the same name for these pins. Fixes: 0fefcb68 ("pinctrl: Add support for Meson8b") Signed-off-by:
Martin Blumenstingl <martin.blumenstingl@googlemail.com> Acked-by:
Kevin Hilman <khilman@baylibre.com> Signed-off-by:
-
Sergei Shtylyov authored
BugLink: http://bugs.launchpad.net/bugs/1705238 commit 58439280 upstream. PINMUX_IPSR_MSEL() macro invocation for the TX2 signal has apparently wrong 1st argument -- most probably a result of cut&paste programming... Fixes: 50884519 ("pinctrl: sh-pfc: r8a7791 PFC support") Signed-off-by:
Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by:
-
Liping Zhang authored
BugLink: http://bugs.launchpad.net/bugs/1705238 commit 425fffd8 upstream. Currently, inputting the following command will succeed but actually the value will be truncated: # echo 0x12ffffffff > /proc/sys/net/ipv4/tcp_notsent_lowat This is not friendly to the user, so instead, we should report error when the value is larger than UINT_MAX. Fixes: e7d316a0 ("sysctl: handle error writing UINT_MAX to u32 fields") Signed-off-by:
Liping Zhang <zlpnobody@gmail.com> Cc: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by:
-
Liping Zhang authored
BugLink: http://bugs.launchpad.net/bugs/1705238 commit 5380e564 upstream. I saw some very confusing sysctl output on my system: # cat /proc/sys/net/core/xfrm_aevent_rseqth -2 # cat /proc/sys/net/core/xfrm_aevent_etime -10 # cat /proc/sys/net/ipv4/tcp_notsent_lowat -4294967295 Because we forget to set the *negp flag in proc_douintvec, so it will become a garbage value. Since the value related to proc_douintvec is always an unsigned integer, so we can set *negp to false explictily to fix this issue. Fixes: e7d316a0 ("sysctl: handle error writing UINT_MAX to u32 fields") Signed-off-by:
-
Thomas Gleixner authored
BugLink: http://bugs.launchpad.net/bugs/1705238 commit 8fbcfeb8 upstream. mac80211_hwsim initializes a hrtimer with clockid CLOCK_MONOTONIC_RAW. That's not supported. Use CLOCK_MONOTONIC instead. Signed-off-by:
Johannes Berg <johannes.berg@intel.com> Signed-off-by:
-
Benjamin Herrenschmidt authored
BugLink: http://bugs.launchpad.net/bugs/1705238 commit 7cf916bd upstream. The current definition is wrong. This breaks my upcoming Aspeed virtual hub driver. Signed-off-by:
Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by:
Alan Stern <stern@rowland.harvard.edu> Signed-off-by:
-
Michael Grzeschik authored
BugLink: http://bugs.launchpad.net/bugs/1705238 commit b3b51417 upstream. The usbip stack dynamically allocates the transfer_buffer and setup_packet of each urb that got generated by the tcp to usb stub code. As these pointers are always used only once we will set them to NULL after use. This is done likewise to the free_urb code in vudc_dev.c. This patch fixes double kfree situations where the usbip remote side added the URB_FREE_BUFFER. Signed-off-by:
Michael Grzeschik <m.grzeschik@pengutronix.de> Acked-by:
Shuah Khan <shuahkh@osg.samsung.com> Signed-off-by:
-
Devin Heitmueller authored
BugLink: http://bugs.launchpad.net/bugs/1705238 commit 6836796d upstream. The USB core and sysfs will attempt to enumerate certain parameters which are unsupported by the au0828 - causing inconsistent behavior and sometimes causing the chip to reset. Avoid making these calls. This problem manifested as intermittent cases where the au8522 would be reset on analog video startup, in particular when starting up ALSA audio streaming in parallel - the sysfs entries created by snd-usb-audio on streaming startup would result in unsupported control messages being sent during tuning which would put the chip into an unknown state. Signed-off-by:
Devin Heitmueller <dheitmueller@kernellabs.com> Signed-off-by:
-
Jeremie Rapin authored
BugLink: http://bugs.launchpad.net/bugs/1705238 commit fd90f73a upstream. Added the USB serial device ID for the CEL ZigBee EM3588 radio stick. Signed-off-by:
Jeremie Rapin <rapinj@gmail.com> Acked-by:
-
Felipe Balbi authored
BugLink: http://bugs.launchpad.net/bugs/1705238 commit 04fb365c upstream. %p will leak kernel pointers, so let's not expose the information on dmesg and instead use %pK. %pK will only show the actual addresses if explicitly enabled under /proc/sys/kernel/kptr_restrict. Acked-by:
Felipe Balbi <felipe.balbi@linux.intel.com> Signed-off-by:
-
Sabrina Dubroca authored
BugLink: http://bugs.launchpad.net/bugs/1705238 commit 9e52b325 upstream. Always try to parse an address, since kstrtoul() will safely fail when given a symbol as input. If that fails (which will be the case for a symbol), try to parse a symbol instead. This allows creating a probe such as: p:probe/vlan_gro_receive 8021q:vlan_gro_receive+0 Which is necessary for this command to work: perf probe -m 8021q -a vlan_gro_receive Link: http://lkml.kernel.org/r/fd72d666f45b114e2c5b9cf7e27b91de1ec966f1.1498122881.git.sd@queasysnail.net Fixes: 413d37d1 ("tracing: Add kprobe-based event tracer") Acked-by:
Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by:
Sabrina Dubroca <sd@queasysnail.net> Signed-off-by:
Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by:
-
Vlastimil Babka authored
BugLink: http://bugs.launchpad.net/bugs/1705238 [Not upstream as that would take 34+ patches] We've got reported a BUG in do_try_to_free_pages(): BUG: unable to handle kernel paging request at ffff8ffffff28990 IP: [<ffffffff8119abe0>] do_try_to_free_pages+0x140/0x490 PGD 0 Oops: 0000 [#1] SMP megaraid_sas sg scsi_mod efivarfs autofs4 Supported: No, Unsupported modules are loaded Workqueue: kacpi_hotplug acpi_hotplug_work_fn task: ffff88ffd0d4c540 ti: ffff88ffd0e48000 task.ti: ffff88ffd0e48000 RIP: 0010:[<ffffffff8119abe0>] [<ffffffff8119abe0>] do_try_to_free_pages+0x140/0x490 RSP: 0018:ffff88ffd0e4ba60 EFLAGS: 00010206 RAX: 000006fffffff900 RBX: 00000000ffffffff RCX: ffff88fffff29000 RDX: 000000ffffffff00 RSI: 0000000000000003 RDI: 00000000024200c8 RBP: 0000000001320122 R08: 0000000000000000 R09: ffff88ffd0e4bbac R10: 0000000000000000 R11: 0000000000000000 R12: ffff88ffd0e4bae0 R13: 0000000000000e00 R14: ffff88fffff2a500 R15: ffff88fffff2b300 FS: 0000000000000000(0000) GS:ffff88ffe6440000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff8ffffff28990 CR3: 0000000001c0a000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: 00000002db570a80 024200c80000001e ffff88fffff2b300 0000000000000000 ffff88fffffd5700 ffff88ffd0d4c540 ffff88ffd0d4c540 ffffffff0000000c 0000000000000000 0000000000000040 00000000024200c8 ffff88ffd0e4bae0 Call Trace: [<ffffffff8119afea>] try_to_free_pages+0xba/0x170 [<ffffffff8118cf2f>] __alloc_pages_nodemask+0x53f/0xb20 [<ffffffff811d39ff>] alloc_pages_current+0x7f/0x100 [<ffffffff811e2232>] migrate_pages+0x202/0x710 [<ffffffff815dadaa>] __offline_pages.constprop.23+0x4ba/0x790 [<ffffffff81463263>] memory_subsys_offline+0x43/0x70 [<ffffffff8144cbed>] device_offline+0x7d/0xa0 [<ffffffff81392fa2>] acpi_bus_offline+0xa5/0xef [<ffffffff81394a77>] acpi_device_hotplug+0x21b/0x41f [<ffffffff8138dab7>] acpi_hotplug_work_fn+0x1a/0x23 [<ffffffff81093cee>] process_one_work+0x14e/0x410 [<ffffffff81094546>] worker_thread+0x116/0x490 [<ffffffff810999ed>] kthread+0xbd/0xe0 [<ffffffff815e4e7f>] ret_from_fork+0x3f/0x70 This translates to the loop in shrink_zone(): classzone_idx = requested_highidx; while (!populated_zone(zone->zone_pgdat->node_zones + classzone_idx)) classzone_idx--; where no zone is populated, so classzone_idx becomes -1 (in RBX). Added debugging output reveals that we enter the function with sc->gfp_mask == GFP_NOFS|__GFP_NOFAIL|__GFP_HARDWALL|__GFP_MOVABLE requested_highidx = gfp_zone(sc->gfp_mask) == 2 (ZONE_NORMAL) Inside the for loop, however: gfp_zone(sc->gfp_mask) == 3 (ZONE_MOVABLE) This means we have gone through this branch: if (buffer_heads_over_limit) sc->gfp_mask |= __GFP_HIGHMEM; This changes the gfp_zone() result, but requested_highidx remains unchanged. On nodes where the only populated zone is movable, the inner while loop will check only lower zones, which are not populated, and underflow classzone_idx. To sum up, the bug occurs in configurations with ZONE_MOVABLE (such as when booted with the movable_node parameter) and only in situations when buffer_heads_over_limit is true, and there's an allocation with __GFP_MOVABLE and without __GFP_HIGHMEM performing direct reclaim. This patch makes sure that classzone_idx starts with the correct zone. Mainline has been affected in versions 4.6 and 4.7, but the culprit commit has been also included in stable trees. In mainline, this has been fixed accidentally as part of 34-patch series (plus follow-up fixes) "Move LRU page reclaim from zones to nodes", which makes the mainline commit unsuitable for stable backport, unfortunately. Fixes: 7bf52fb8 ("mm: vmscan: reclaim highmem zone if buffer_heads is over limit") Obsoleted-by: b2e18757 ("mm, vmscan: begin reclaiming pages on a per-node basis") Debugged-by:
Michal Hocko <mhocko@suse.cz> Signed-off-by:
Vlastimil Babka <vbabka@suse.cz> Cc: Minchan Kim <minchan@kernel.org> Cc: Johannes Weiner <hannes@cmpxchg.org> Acked-by:
Michal Hocko <mhocko@suse.com> Signed-off-by:
-
Rafał Miłecki authored
BugLink: http://bugs.launchpad.net/bugs/1705238 commit b4dfd8e9 upstream. This fixes Ethernet on D-Link DIR-885L with BCM47094 SoC. Felix reported similar fix was needed for his BCM4709 device (Buffalo WXR-1900DHP?). I tested this for regressions on BCM4706, BCM4708A0 and BCM47081A0. Cc: Felix Fietkau <nbd@openwrt.org> Signed-off-by:
Rafał Miłecki <zajec5@gmail.com> Signed-off-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
Amit Pundir <amit.pundir@linaro.org> Signed-off-by:
-
Adrian Salido authored
BugLink: http://bugs.launchpad.net/bugs/1705238 commit 62655397 upstream. The driver_override implementation is susceptible to race condition when different threads are reading vs storing a different driver override. Add locking to avoid race condition. Fixes: 3d713e0e ("driver core: platform: add device binding path 'driver_override'") Cc: stable@vger.kernel.org Signed-off-by:
Adrian Salido <salidoa@google.com> Signed-off-by:
-
Christoph Hellwig authored
BugLink: http://bugs.launchpad.net/bugs/1705238 commit 629e014b upstream. Currently we just stash anything we got into file->f_flags, and the report it in fcntl(F_GETFD). This patch just clears out all unknown flags so that we don't pass them to the fs or report them. Signed-off-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
-
Christoph Hellwig authored
BugLink: http://bugs.launchpad.net/bugs/1705238 commit 80f18379 upstream. Add a central define for all valid open flags, and use it in the uniqueness check. Signed-off-by:
-
Kleber Sacilotto de Souza authored
Ignore: yes Signed-off-by:Kleber Sacilotto de Souza <kleber.souza@canonical.com>
-
- 10 Aug, 2017 3 commits
-
-
Kleber Sacilotto de Souza authored
Signed-off-by: -
Joseph Salisbury authored
BugLink: http://bugs.launchpad.net/bugs/1709032 This reverts commit 2ad4caea. Acked-by:
Colin King <colin.king@canonical.com> Acked-by:
Po-Hsu Lin <po-hsu.lin@canonical.com> Signed-off-by:
-
Kleber Sacilotto de Souza authored
Ignore: yes Signed-off-by:
-
- 08 Aug, 2017 3 commits
-
-
Stefan Bader authored
Signed-off-by: -
Willem de Bruijn authored
When iteratively building a UDP datagram with MSG_MORE and that datagram exceeds MTU, consistently choose UFO or fragmentation. Once skb_is_gso, always apply ufo. Conversely, once a datagram is split across multiple skbs, do not consider ufo. Sendpage already maintains the first invariant, only add the second. IPv6 does not have a sendpage implementation to modify. Fixes: e89e9cf5 ("[IPv4/IPv6]: UFO Scatter-gather approach") Reported-by:
Andrey Konovalov <andreyknvl@google.com> Signed-off-by:
Willem de Bruijn <willemb@google.com> CVE-2017-1000112 (backported from email submission) Signed-off-by:
-
Michal Kubeček authored
Our customer encountered stuck NFS writes for blocks starting at specific offsets w.r.t. page boundary caused by networking stack sending packets via UFO enabled device with wrong checksum. The problem can be reproduced by composing a long UDP datagram from multiple parts using MSG_MORE flag: sendto(sd, buff, 1000, MSG_MORE, ...); sendto(sd, buff, 1000, MSG_MORE, ...); sendto(sd, buff, 3000, 0, ...); Assume this packet is to be routed via a device with MTU 1500 and NETIF_F_UFO enabled. When second sendto() gets into __ip_append_data(), this condition is tested (among others) to decide whether to call ip_ufo_append_data(): ((length + fragheaderlen) > mtu) || (skb && skb_is_gso(skb)) At the moment, we already have skb with 1028 bytes of data which is not marked for GSO so that the test is false (fragheaderlen is usually 20). Thus we append second 1000 bytes to this skb without invoking UFO. Third sendto(), however, has sufficient length to trigger the UFO path so that we end up with non-UFO skb followed by a UFO one. Later on, udp_send_skb() uses udp_csum() to calculate the checksum but that assumes all fragments have correct checksum in skb->csum which is not true for UFO fragments. When checking against MTU, we need to add skb->len to length of new segment if we already have a partially filled skb and fragheaderlen only if there isn't one. In the IPv6 case, skb can only be null if this is the first segment so that we have to use headersize (length of the first IPv6 header) rather than fragheaderlen (length of IPv6 header of further fragments) for skb == NULL. Fixes: e89e9cf5 ("[IPv4/IPv6]: UFO Scatter-gather approach") Fixes: e4c5e13a ("ipv6: Should use consistent conditional judgement for ip6 fragment between __ip6_append_data and ip6_finish_output") Signed-off-by:
Michal Kubecek <mkubecek@suse.cz> Acked-by:
Vlad Yasevich <vyasevic@redhat.com> Signed-off-by:
-
