- 03 Feb, 2016 11 commits
-
-
Ioan-Adrian Ratiu authored
commit e470127e upstream. The critical section protected by usbhid->lock in hid_ctrl() is too big and because of this it causes a recursive deadlock. "Too big" means the case statement and the call to hid_input_report() do not need to be protected by the spinlock (no URB operations are done inside them). The deadlock happens because in certain rare cases drivers try to grab the lock while handling the ctrl irq which grabs the lock before them as described above. For example newer wacom tablets like 056a:033c try to reschedule proximity reads from wacom_intuos_schedule_prox_event() calling hid_hw_request() -> usbhid_request() -> usbhid_submit_report() which tries to grab the usbhid lock already held by hid_ctrl(). There are two ways to get out of this deadlock: 1. Make the drivers work "around" the ctrl critical region, in the wacom case for ex. by delaying the scheduling of the proximity read request itself to a workqueue. 2. Shrink the critical region so the usbhid lock protects only the instructions which modify usbhid state, calling hid_input_report() with the spinlock unlocked, allowing the device driver to grab the lock first, finish and then grab the lock afterwards in hid_ctrl(). This patch implements the 2nd solution. Signed-off-by:
Ioan-Adrian Ratiu <adi@adirat.com> Signed-off-by:
Jiri Kosina <jkosina@suse.cz> Cc: Jason Gerecke <killertofu@gmail.com> Signed-off-by:
Luis Henriques <luis.henriques@canonical.com>
-
Jamie Bainbridge authored
commit ec7147a9 upstream. Under some conditions, CIFS can repeatedly call the cifs_dbg() logging wrapper. If done rapidly enough, the console framebuffer can softlockup or "rcu_sched self-detected stall". Apply the built-in log ratelimiters to prevent such hangs. Signed-off-by:
Jamie Bainbridge <jamie.bainbridge@gmail.com> Signed-off-by:
Steve French <smfrench@gmail.com> [ luis: backported to 3.16: adjusted context ] Signed-off-by:
-
Andrew Morton authored
commit 04ea1e91 upstream. openrisc-allnoconfig: kernel/uid16.c: In function 'SYSC_setgroups16': kernel/uid16.c:184:2: error: implicit declaration of function 'groups_alloc' kernel/uid16.c:184:13: warning: assignment makes pointer from integer without a cast openrisc shouldn't be setting CONFIG_UID16 when CONFIG_MULTIUSER=n. Fixes: 2813893f ("kernel: conditionally support non-root users, groups and capabilities") Reported-by:
Fengguang Wu <fengguang.wu@gmail.com> Cc: Iulia Manda <iulia.manda21@gmail.com> Cc: Josh Triplett <josh@joshtriplett.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by:
-
Guenter Roeck authored
commit c86576ea upstream. mn10300 builds fail with fs/stat.c: In function 'cp_old_stat': fs/stat.c:163:2: error: 'old_uid_t' undeclared ipc/util.c: In function 'ipc64_perm_to_ipc_perm': ipc/util.c:540:2: error: 'old_uid_t' undeclared Select CONFIG_HAVE_UID16 and remove local definition of CONFIG_UID16 to fix the problem. Fixes: fbc416ff ("arm64: fix building without CONFIG_UID16") Cc: Arnd Bergmann <arnd@arndb.de> Acked-by:
Arnd Bergmann <arnd@arndb.de> Acked-by:
Acked-by: David Howells <dhowells@redhat.com> Signed-off-by:
Guenter Roeck <linux@roeck-us.net> Signed-off-by:
-
Arnd Bergmann authored
commit fbc416ff upstream. As reported by Michal Simek, building an ARM64 kernel with CONFIG_UID16 disabled currently fails because the system call table still needs to reference the individual function entry points that are provided by kernel/sys_ni.c in this case, and the declarations are hidden inside of #ifdef CONFIG_UID16: arch/arm64/include/asm/unistd32.h:57:8: error: 'sys_lchown16' undeclared here (not in a function) __SYSCALL(__NR_lchown, sys_lchown16) I believe this problem only exists on ARM64, because older architectures tend to not need declarations when their system call table is built in assembly code, while newer architectures tend to not need UID16 support. ARM64 only uses these system calls for compatibility with 32-bit ARM binaries. This changes the CONFIG_UID16 check into CONFIG_HAVE_UID16, which is set unconditionally on ARM64 with CONFIG_COMPAT, so we see the declarations whenever we need them, but otherwise the behavior is unchanged. Fixes: af1839eb ("Kconfig: clean up the long arch list for the UID16 config option") Signed-off-by:
Will Deacon <will.deacon@arm.com> Signed-off-by:
Catalin Marinas <catalin.marinas@arm.com> Signed-off-by:
-
Moni Shoua authored
commit f25bf197 upstream. The macro mlx4_foreach_non_ib_transport_port() is not used anywhere. Remove it. Fixes: aa9a2d51 ("mlx4: Activate RoCE/SRIOV") Signed-off-by:
Moni Shoua <monis@mellanox.com> Signed-off-by:
Doug Ledford <dledford@redhat.com> Signed-off-by:
-
Matan Barak authored
commit 4e408167 upstream. Hop limit value wasn't copied from attributes when ah was created. This may influence packets for unconnected services to get dropped in routers when endpoints are not in the same subnet. Fixes: fa417f7b ("IB/mlx4: Add support for IBoE") Signed-off-by:
Matan Barak <matanb@mellanox.com> Signed-off-by:
-
Chuanxiao Dong authored
commit 0036e746 upstream. Correct the wrong voltage value shown in debugfs for mmc/sd/sdio. Signed-off-by:
Chuanxiao Dong <chuanxiao.dong@intel.com> Signed-off-by:
Pawel Wodkowski <pawelx.wodkowski@intel.com> Fixes: 42cd95a0 ("mmc: core: debugfs: Add signal_voltage to ios dump") Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by:
-
Aaron Conole authored
commit fe22cd9b upstream. Currently, pr_debug and pr_devel will not elide function call arguments appearing in calls to the no_printk for these macros. This is because all side effects must be honored before proceeding to the 0-value assignment in no_printk. The behavior is contrary to documentation found in the CodingStyle and the header file where these functions are declared. This patch corrects that behavior by shunting out the call to no_printk completely. The format string is still checked by gcc for correctness, but no code seems to be emitted in common cases. [akpm@linux-foundation.org: remove braces, per Joe] Fixes: 5264f2f7 ("include/linux/printk.h: use and neaten no_printk") Signed-off-by:
Aaron Conole <aconole@redhat.com> Reported-by:
Dmitry Vyukov <dvyukov@google.com> Cc: Joe Perches <joe@perches.com> Cc: Jason Baron <jbaron@akamai.com> Signed-off-by:
-
Sven Eckelmann authored
commit 42eff6a6 upstream. It is not allowed to free the memory of an object which is part of a list which is protected by rcu-read-side-critical sections without making sure that no other context is accessing the object anymore. This usually happens by removing the references to this object and then waiting until the rcu grace period is over and no one (allowedly) accesses it anymore. But the _now functions ignore this completely. They free the object directly even when a different context still tries to access it. This has to be avoided and thus these functions must be removed and all functions have to use batadv_orig_node_free_ref. Fixes: 72822225 ("batman-adv: Fix rcu_barrier() miss due to double call_rcu() in TT code") Signed-off-by:
Sven Eckelmann <sven@narfation.org> Signed-off-by:
Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by:
Antonio Quartulli <a@unstable.cc> Signed-off-by:
-
Sven Eckelmann authored
commit b4d922cf upstream. It is not allowed to free the memory of an object which is part of a list which is protected by rcu-read-side-critical sections without making sure that no other context is accessing the object anymore. This usually happens by removing the references to this object and then waiting until the rcu grace period is over and no one (allowedly) accesses it anymore. But the _now functions ignore this completely. They free the object directly even when a different context still tries to access it. This has to be avoided and thus these functions must be removed and all functions have to use batadv_hardif_free_ref. Fixes: 89652331 ("batman-adv: split tq information in neigh_node struct") Signed-off-by:
-
- 02 Feb, 2016 29 commits
-
-
Sven Eckelmann authored
commit ae3e1e36 upstream. It is not allowed to free the memory of an object which is part of a list which is protected by rcu-read-side-critical sections without making sure that no other context is accessing the object anymore. This usually happens by removing the references to this object and then waiting until the rcu grace period is over and no one (allowedly) accesses it anymore. But the _now functions ignore this completely. They free the object directly even when a different context still tries to access it. This has to be avoided and thus these functions must be removed and all functions have to use batadv_neigh_ifinfo_free_ref. Fixes: 89652331 ("batman-adv: split tq information in neigh_node struct") Signed-off-by:
-
Sven Eckelmann authored
commit 2baa753c upstream. It is not allowed to free the memory of an object which is part of a list which is protected by rcu-read-side-critical sections without making sure that no other context is accessing the object anymore. This usually happens by removing the references to this object and then waiting until the rcu grace period is over and no one (allowedly) accesses it anymore. But the _now functions ignore this completely. They free the object directly even when a different context still tries to access it. This has to be avoided and thus these functions must be removed and all functions have to use batadv_neigh_node_free_ref. Fixes: 89652331 ("batman-adv: split tq information in neigh_node struct") Signed-off-by:
-
Sven Eckelmann authored
commit deed9660 upstream. It is not allowed to free the memory of an object which is part of a list which is protected by rcu-read-side-critical sections without making sure that no other context is accessing the object anymore. This usually happens by removing the references to this object and then waiting until the rcu grace period is over and no one (allowedly) accesses it anymore. But the _now functions ignore this completely. They free the object directly even when a different context still tries to access it. This has to be avoided and thus these functions must be removed and all functions have to use batadv_orig_ifinfo_free_ref. Fixes: 7351a482 ("batman-adv: split out router from orig_node") Signed-off-by:
-
Linus Lüssing authored
commit 9d31b3ce upstream. This patch fixes a potential memory leak which can occur once an originator times out. On timeout the according global translation table entry might not get purged correctly. Furthermore, the non purged TT entry will cause its orig-node to leak, too. Which additionally can lead to the new multicast optimization feature not kicking in because of a therefore bogus counter. In detail: The batadv_tt_global_entry->orig_list holds the reference to the orig-node. Usually this reference is released after BATADV_PURGE_TIMEOUT through: _batadv_purge_orig()-> batadv_purge_orig_node()->batadv_update_route()->_batadv_update_route()-> batadv_tt_global_del_orig() which purges this global tt entry and releases the reference to the orig-node. However, if between two batadv_purge_orig_node() calls the orig-node timeout grew to 2*BATADV_PURGE_TIMEOUT then this call path isn't reached. Instead the according orig-node is removed from the originator hash in _batadv_purge_orig(), the batadv_update_route() part is skipped and won't be reached anymore. Fixing the issue by moving batadv_tt_global_del_orig() out of the rcu callback. Signed-off-by:
Linus Lüssing <linus.luessing@c0d3.blue> Acked-by:
Antonio Quartulli <antonio@meshcoding.com> Signed-off-by:
-
Sven Eckelmann authored
commit 44e8e7e9 upstream. The batadv_nc_node_free_ref function uses call_rcu to delay the free of the batadv_nc_node object until no (already started) rcu_read_lock is enabled anymore. This makes sure that no context is still trying to access the object which should be removed. But batadv_nc_node also contains a reference to orig_node which must be removed. The reference drop of orig_node was done in the call_rcu function batadv_nc_node_free_rcu but should actually be done in the batadv_nc_node_release function to avoid nested call_rcus. This is important because rcu_barrier (e.g. batadv_softif_free or batadv_exit) will not detect the inner call_rcu as relevant for its execution. Otherwise this barrier will most likely be inserted in the queue before the callback of the first call_rcu was executed. The caller of rcu_barrier will therefore continue to run before the inner call_rcu callback finished. Fixes: d56b1705 ("batman-adv: network coding - detect coding nodes and remove these after timeout") Signed-off-by:
-
Sven Eckelmann authored
commit 63b39927 upstream. The batadv_claim_free_ref function uses call_rcu to delay the free of the batadv_bla_claim object until no (already started) rcu_read_lock is enabled anymore. This makes sure that no context is still trying to access the object which should be removed. But batadv_bla_claim also contains a reference to backbone_gw which must be removed. The reference drop of backbone_gw was done in the call_rcu function batadv_claim_free_rcu but should actually be done in the batadv_claim_release function to avoid nested call_rcus. This is important because rcu_barrier (e.g. batadv_softif_free or batadv_exit) will not detect the inner call_rcu as relevant for its execution. Otherwise this barrier will most likely be inserted in the queue before the callback of the first call_rcu was executed. The caller of rcu_barrier will therefore continue to run before the inner call_rcu callback finished. Fixes: 23721387 ("batman-adv: add basic bridge loop avoidance code") Signed-off-by:
Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by:
-
Nikolay Aleksandrov authored
commit c6894dec upstream. After promisc mode management was introduced a bridge device could do dev_set_promiscuity from its ndo_change_rx_flags() callback which in turn can be called after the bridge's addr_list_lock has been taken (e.g. by dev_uc_add). This causes a false positive lockdep splat because the port interfaces' addr_list_lock is taken when br_manage_promisc() runs after the bridge's addr list lock was already taken. To remove the false positive introduce a custom bridge addr_list_lock class and set it on bridge init. A simple way to reproduce this is with the following: $ brctl addbr br0 $ ip l add l br0 br0.100 type vlan id 100 $ ip l set br0 up $ ip l set br0.100 up $ echo 1 > /sys/class/net/br0/bridge/vlan_filtering $ brctl addif br0 eth0 Splat: [ 43.684325] ============================================= [ 43.684485] [ INFO: possible recursive locking detected ] [ 43.684636] 4.4.0-rc8+ #54 Not tainted [ 43.684755] --------------------------------------------- [ 43.684906] brctl/1187 is trying to acquire lock: [ 43.685047] (_xmit_ETHER){+.....}, at: [<ffffffff8150169e>] dev_set_rx_mode+0x1e/0x40 [ 43.685460] but task is already holding lock: [ 43.685618] (_xmit_ETHER){+.....}, at: [<ffffffff815072a7>] dev_uc_add+0x27/0x80 [ 43.686015] other info that might help us debug this: [ 43.686316] Possible unsafe locking scenario: [ 43.686743] CPU0 [ 43.686967] ---- [ 43.687197] lock(_xmit_ETHER); [ 43.687544] lock(_xmit_ETHER); [ 43.687886] *** DEADLOCK *** [ 43.688438] May be due to missing lock nesting notation [ 43.688882] 2 locks held by brctl/1187: [ 43.689134] #0: (rtnl_mutex){+.+.+.}, at: [<ffffffff81510317>] rtnl_lock+0x17/0x20 [ 43.689852] #1: (_xmit_ETHER){+.....}, at: [<ffffffff815072a7>] dev_uc_add+0x27/0x80 [ 43.690575] stack backtrace: [ 43.690970] CPU: 0 PID: 1187 Comm: brctl Not tainted 4.4.0-rc8+ #54 [ 43.691270] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.8.1-20150318_183358- 04/01/2014 [ 43.691770] ffffffff826a25c0 ffff8800369fb8e0 ffffffff81360ceb ffffffff826a25c0 [ 43.692425] ffff8800369fb9b8 ffffffff810d0466 ffff8800369fb968 ffffffff81537139 [ 43.693071] ffff88003a08c880 0000000000000000 00000000ffffffff 0000000002080020 [ 43.693709] Call Trace: [ 43.693931] [<ffffffff81360ceb>] dump_stack+0x4b/0x70 [ 43.694199] [<ffffffff810d0466>] __lock_acquire+0x1e46/0x1e90 [ 43.694483] [<ffffffff81537139>] ? netlink_broadcast_filtered+0x139/0x3e0 [ 43.694789] [<ffffffff8153b5da>] ? nlmsg_notify+0x5a/0xc0 [ 43.695064] [<ffffffff810d10f5>] lock_acquire+0xe5/0x1f0 [ 43.695340] [<ffffffff8150169e>] ? dev_set_rx_mode+0x1e/0x40 [ 43.695623] [<ffffffff815edea5>] _raw_spin_lock_bh+0x45/0x80 [ 43.695901] [<ffffffff8150169e>] ? dev_set_rx_mode+0x1e/0x40 [ 43.696180] [<ffffffff8150169e>] dev_set_rx_mode+0x1e/0x40 [ 43.696460] [<ffffffff8150189c>] dev_set_promiscuity+0x3c/0x50 [ 43.696750] [<ffffffffa0586845>] br_port_set_promisc+0x25/0x50 [bridge] [ 43.697052] [<ffffffffa05869aa>] br_manage_promisc+0x8a/0xe0 [bridge] [ 43.697348] [<ffffffffa05826ee>] br_dev_change_rx_flags+0x1e/0x20 [bridge] [ 43.697655] [<ffffffff81501532>] __dev_set_promiscuity+0x132/0x1f0 [ 43.697943] [<ffffffff81501672>] __dev_set_rx_mode+0x82/0x90 [ 43.698223] [<ffffffff815072de>] dev_uc_add+0x5e/0x80 [ 43.698498] [<ffffffffa05b3c62>] vlan_device_event+0x542/0x650 [8021q] [ 43.698798] [<ffffffff8109886d>] notifier_call_chain+0x5d/0x80 [ 43.699083] [<ffffffff810988b6>] raw_notifier_call_chain+0x16/0x20 [ 43.699374] [<ffffffff814f456e>] call_netdevice_notifiers_info+0x6e/0x80 [ 43.699678] [<ffffffff814f4596>] call_netdevice_notifiers+0x16/0x20 [ 43.699973] [<ffffffffa05872be>] br_add_if+0x47e/0x4c0 [bridge] [ 43.700259] [<ffffffffa058801e>] add_del_if+0x6e/0x80 [bridge] [ 43.700548] [<ffffffffa0588b5f>] br_dev_ioctl+0xaf/0xc0 [bridge] [ 43.700836] [<ffffffff8151a7ac>] dev_ifsioc+0x30c/0x3c0 [ 43.701106] [<ffffffff8151aac9>] dev_ioctl+0xf9/0x6f0 [ 43.701379] [<ffffffff81254345>] ? mntput_no_expire+0x5/0x450 [ 43.701665] [<ffffffff812543ee>] ? mntput_no_expire+0xae/0x450 [ 43.701947] [<ffffffff814d7b02>] sock_do_ioctl+0x42/0x50 [ 43.702219] [<ffffffff814d8175>] sock_ioctl+0x1e5/0x290 [ 43.702500] [<ffffffff81242d0b>] do_vfs_ioctl+0x2cb/0x5c0 [ 43.702771] [<ffffffff81243079>] SyS_ioctl+0x79/0x90 [ 43.703033] [<ffffffff815eebb6>] entry_SYSCALL_64_fastpath+0x16/0x7a CC: Vlad Yasevich <vyasevic@redhat.com> CC: Stephen Hemminger <stephen@networkplumber.org> CC: Bridge list <bridge@lists.linux-foundation.org> CC: Andy Gospodarek <gospo@cumulusnetworks.com> CC: Roopa Prabhu <roopa@cumulusnetworks.com> Fixes: 2796d0c6 ("bridge: Automatically manage port promiscuous mode.") Reported-by:
Andy Gospodarek <gospo@cumulusnetworks.com> Signed-off-by:
Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by:
David S. Miller <davem@davemloft.net> [ luis: backported to 3.16: adjusted context ] Signed-off-by:
-
Dan Carpenter authored
commit 0dc924c5 upstream. If we return 1 here, then the caller treats it as an error and returns -EINVAL. It causes a static checker warning to treat positive returns as an error. Fixes: 1aba86d6 ('Btrfs: fix easily get into ENOSPC in mixed case') Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
David Sterba <dsterba@suse.com> Signed-off-by:
-
Russell King authored
commit d9812780 upstream. The SD card specification allows cards to error out a SWITCH command where the requested function in a group is not supported. The spec provides for a set of capabilities which indicate which functions are supported. In the case of the power limit, requesting an unsupported power level via the SWITCH command fails, resulting in the power level remaining at the power-on default of 0.72W, even though the host and card may support higher powers levels. This has been seen with SanDisk 8GB cards, which support the default 0.72W and 1.44W (200mA and 400mA) in combination with an iMX6 host, supporting up to 2.88W (800mA). This currently causes us to try to set a power limit function value of '3' (2.88W) which the card errors out on, and thereby causes the power level to remain at 0.72W rather than the desired 1.44W. Arrange to limit the selected current limit by the capabilities reported by the card to avoid the SWITCH command failing. Select the highest current limit that the host and card combination support. Signed-off-by:
Russell King <rmk+kernel@arm.linux.org.uk> Fixes: a39ca6ae ("mmc: core: Simplify and fix for SD switch processing") Signed-off-by:
-
Eric Dumazet authored
commit 3e4006f0 upstream. When first SYNACK is sent, we already hold rcu_read_lock(), but this is not true if a SYNACK is retransmitted, as a timer (soft) interrupt does not hold rcu_read_lock() Fixes: 45f6fad8 ("ipv6: add complete rcu protection around np->opt") Reported-by:
Dave Jones <davej@codemonkey.org.uk> Signed-off-by:
Eric Dumazet <edumazet@google.com> Signed-off-by:
-
Mickaël Salaün authored
commit 42d91f61 upstream. Fix build error by generating elfcore.o only when ELF_CORE (depending on COREDUMP) is selected: arch/x86/um/built-in.o: In function `elf_core_write_extra_phdrs': (.text+0x3e62): undefined reference to `dump_emit' arch/x86/um/built-in.o: In function `elf_core_write_extra_data': (.text+0x3eef): undefined reference to `dump_emit' Fixes: 5d2acfc7 ("kconfig: make allnoconfig disable options behind EMBEDDED and EXPERT") Signed-off-by:
Mickaël Salaün <mic@digikod.net> Cc: Jeff Dike <jdike@addtoit.com> Cc: Richard Weinberger <richard@nod.at> Cc: Josh Triplett <josh@joshtriplett.org> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Michal Marek <mmarek@suse.cz> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by:
Richard Weinberger <richard@nod.at> Reviewed-by:
Josh Triplett <josh@joshtriplett.org> Signed-off-by:
-
Bart Van Assche authored
commit f0a8afec upstream. strsep() modifies its first argument. Make the pointer passed to kfree() match the return value of kmalloc(). Fixes: 229d4f11 (commit "target_core_alua: Referrals configfs integration") Signed-off-by:
Bart Van Assche <bart.vanassche@sandisk.com> Cc: Hannes Reinecke <hare@suse.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Andy Grover <agrover@redhat.com> Cc: Sagi Grimberg <sagig@mellanox.com> Signed-off-by:
Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by:
-
Brian Norris authored
commit 715780ae upstream. The kerneldoc for request_firmware_nowait() says that it may call the provided cont() callback with @fw == NULL, if the firmware request fails. However, this is not the case when called with an empty string (""). This case is short-circuited by the 'name[0] == '\0'' check introduced in commit 471b095d ("firmware_class: make sure fw requests contain a name"), so _request_firmware() never gets to set the fw to NULL. Noticed while using the new 'trigger_async_request' testing hook: # printf '\x00' > /sys/devices/virtual/misc/test_firmware/trigger_async_request [10553.726178] test_firmware: loading '' [10553.729859] test_firmware: loaded: 995209091 # printf '\x00' > /sys/devices/virtual/misc/test_firmware/trigger_async_request [10733.676184] test_firmware: loading '' [10733.679855] Unable to handle kernel NULL pointer dereference at virtual address 00000004 [10733.687951] pgd = ec188000 [10733.690655] [00000004] *pgd=00000000 [10733.694240] Internal error: Oops: 5 [#1] SMP ARM [10733.698847] Modules linked in: btmrvl_sdio btmrvl bluetooth sbs_battery nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables asix usbnet mwifiex_sdio mwifiex cfg80211 jitterentropy_rng drbg joydev snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device ppp_async ppp_generic slhc tun [10733.725670] CPU: 0 PID: 6600 Comm: bash Not tainted 4.4.0-rc4-00351-g63d0877 #178 [10733.733137] Hardware name: Rockchip (Device Tree) [10733.737831] task: ed24f6c0 ti: ee322000 task.ti: ee322000 [10733.743222] PC is at do_raw_spin_lock+0x18/0x1a0 [10733.747831] LR is at _raw_spin_lock+0x18/0x1c [10733.752180] pc : [<c00653a0>] lr : [<c054c204>] psr: a00d0013 [10733.752180] sp : ee323df8 ip : ee323e20 fp : ee323e1c [10733.763634] r10: 00000051 r9 : b6f18000 r8 : ee323f80 [10733.768847] r7 : c089cebc r6 : 00000001 r5 : 00000000 r4 : ec0e6000 [10733.775360] r3 : dead4ead r2 : c06bd140 r1 : eef913b4 r0 : 00000000 [10733.781874] Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none [10733.788995] Control: 10c5387d Table: 2c18806a DAC: 00000051 [10733.794728] Process bash (pid: 6600, stack limit = 0xee322218) [10733.800549] Stack: (0xee323df8 to 0xee324000) [10733.804896] 3de0: ec0e6000 00000000 [10733.813059] 3e00: 00000001 c089cebc ee323f80 b6f18000 ee323e2c ee323e20 c054c204 c0065394 [10733.821221] 3e20: ee323e44 ee323e30 c02fec60 c054c1f8 ec0e7ec0 ec3fcfc0 ee323e5c ee323e48 [10733.829384] 3e40: c02fed08 c02fec48 c07dbf74 eeb05a00 ee323e8c ee323e60 c0253828 c02fecac [10733.837547] 3e60: 00000001 c0116950 ee323eac ee323e78 00000001 ec3fce00 ed2d9700 ed2d970c [10733.845710] 3e80: ee323e9c ee323e90 c02e873c c02537d4 ee323eac ee323ea0 c017bd40 c02e8720 [10733.853873] 3ea0: ee323ee4 ee323eb0 c017b250 c017bd00 00000000 00000000 f3e47a54 ec128b00 [10733.862035] 3ec0: c017b10c ee323f80 00000001 c000f504 ee322000 00000000 ee323f4c ee323ee8 [10733.870197] 3ee0: c011b71c c017b118 ee323fb0 c011bc90 becfa8d9 00000001 ec128b00 00000001 [10733.878359] 3f00: b6f18000 ee323f80 ee323f4c ee323f18 c011bc90 c0063950 ee323f3c ee323f28 [10733.886522] 3f20: c0063950 c0549138 00000001 ec128b00 00000001 ec128b00 b6f18000 ee323f80 [10733.894684] 3f40: ee323f7c ee323f50 c011bed8 c011b6ec c0135fb8 c0135f24 ec128b00 ec128b00 [10733.902847] 3f60: 00000001 b6f18000 c000f504 ee322000 ee323fa4 ee323f80 c011c664 c011be24 [10733.911009] 3f80: 00000000 00000000 00000001 b6f18000 b6e79be0 00000004 00000000 ee323fa8 [10733.919172] 3fa0: c000f340 c011c618 00000001 b6f18000 00000001 b6f18000 00000001 00000000 [10733.927334] 3fc0: 00000001 b6f18000 b6e79be0 00000004 00000001 00000001 8068a3f1 b6e79c84 [10733.935496] 3fe0: 00000000 becfa7dc b6de194d b6e20246 400d0030 00000001 7a4536e8 49bda390 [10733.943664] [<c00653a0>] (do_raw_spin_lock) from [<c054c204>] (_raw_spin_lock+0x18/0x1c) [10733.951743] [<c054c204>] (_raw_spin_lock) from [<c02fec60>] (fw_free_buf+0x24/0x64) [10733.959388] [<c02fec60>] (fw_free_buf) from [<c02fed08>] (release_firmware+0x68/0x74) [10733.967207] [<c02fed08>] (release_firmware) from [<c0253828>] (trigger_async_request_store+0x60/0x124) [10733.976501] [<c0253828>] (trigger_async_request_store) from [<c02e873c>] (dev_attr_store+0x28/0x34) [10733.985533] [<c02e873c>] (dev_attr_store) from [<c017bd40>] (sysfs_kf_write+0x4c/0x58) [10733.993437] [<c017bd40>] (sysfs_kf_write) from [<c017b250>] (kernfs_fop_write+0x144/0x1a8) [10734.001689] [<c017b250>] (kernfs_fop_write) from [<c011b71c>] (__vfs_write+0x3c/0xe4) After this patch: # printf '\x00' > /sys/devices/virtual/misc/test_firmware/trigger_async_request [ 32.126322] test_firmware: loading '' [ 32.129995] test_firmware: failed to async load firmware -bash: printf: write error: No such device Fixes: 471b095d ("firmware_class: make sure fw requests contain a name") Signed-off-by:
Brian Norris <computersforpeace@gmail.com> Acked-by:
Ming Lei <ming.lei@canonical.com> Acked-by:
Kees Cook <keescook@chromium.org> Signed-off-by:
Shuah Khan <shuahkh@osg.samsung.com> Signed-off-by:
-
Sasha Levin authored
commit 6b9140f3 upstream. Writing 0 length data into test_power makes it access an invalid array location and kill the system. Fixes: f17ef9b2 ("power: Make test_power driver more dynamic.") Signed-off-by:
Sasha Levin <sasha.levin@oracle.com> Signed-off-by:
Sebastian Reichel <sre@kernel.org> Signed-off-by:
-
Stephane Eranian authored
commit 61b87cae upstream. This patch fixes a bug in the filter_events() function. The patch fixes the bug whereby if some mappings did not exist, e.g., STALLED_CYCLES_FRONTEND, then any event after it in the attrs array would disappear from the published list of events in /sys/devices/cpu/events. This could be verified easily on any system post SNB (which do not publish STALLED_CYCLES_FRONTEND): $ ./perf stat -e cycles,ref-cycles true Performance counter stats for 'true': 1,217,348 cycles <not supported> ref-cycles The problem is that in filter_events() there is an assumption that the argument (attrs) is organized in increasing continuous event indexes related to the event_map(). But if we remove the non-supported events by shifing the position in the array, then the lookup x86_pmu.event_map() needs to compensate for it, otherwise we are looking up the wrong index. This patch corrects this problem by compensating for the deleted events and with that ref-cycles reappears (here shown on Haswell): $ perf stat -e ref-cycles,cycles true Performance counter stats for 'true': 4,525,910 ref-cycles 1,064,920 cycles 0.002943888 seconds time elapsed Signed-off-by:
Stephane Eranian <eranian@google.com> Signed-off-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Cc: jolsa@kernel.org Cc: kan.liang@intel.com Fixes: 8300daa2 ("perf/x86: Filter out undefined events from sysfs events attribute") Link: http://lkml.kernel.org/r/1449516805-6637-1-git-send-email-eranian@google.comSigned-off-by:
Ingo Molnar <mingo@kernel.org> Signed-off-by:
-
Vegard Nossum authored
commit aab24a89 upstream. menu_is_visible() is a bool function and should use boolean return values. "no" is a tristate value which happens to also have a value of 0, but we should nevertheless use the right symbol for it. This is a very minor cleanup with no semantic change. Fixes: 86e187ff ("kconfig: add an option to determine a menu's visibility") Cc: Arnaud Lacombe <lacombar@gmail.com> Cc: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by:
Vegard Nossum <vegard.nossum@oracle.com> Signed-off-by:
Michal Marek <mmarek@suse.com> Signed-off-by:
-
Ani Sinha authored
commit 984cf355 upstream. Commit 984d74a7 ("sysrq: rcu-ify __handle_sysrq") replaced spin_lock_irqsave() calls with rcu_read_lock() calls in sysrq. Since rcu_read_lock() does not disable preemption, faulthandler_disabled() in __do_page_fault() in x86/fault.c returns false. When the code later calls might_sleep() in the pagefault handler, we get the following warning: BUG: sleeping function called from invalid context at ../arch/x86/mm/fault.c:1187 in_atomic(): 0, irqs_disabled(): 0, pid: 4706, name: bash Preemption disabled at:[<ffffffff81484339>] printk+0x48/0x4a To fix this, we release the RCU read lock before we crash. Tested this patch on linux 3.18 by booting off one of our boards. Fixes: 984d74a7 ("sysrq: rcu-ify __handle_sysrq") Signed-off-by:
Ani Sinha <ani@arista.com> Reviewed-by:
Rik van Riel <riel@redhat.com> Signed-off-by:
Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by:
-
Jan Beulich authored
commit 0d430e3f upstream. This was meant to print base address and entry count; make it do so again. Fixes: 37868fe1 "x86/ldt: Make modify_ldt synchronous" Signed-off-by:
Jan Beulich <jbeulich@suse.com> Acked-by:
Andy Lutomirski <luto@kernel.org> Link: http://lkml.kernel.org/r/56797D8402000078000C24F0@prv-mh.provo.novell.comSigned-off-by:
Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
-
Stefan Wahren authored
commit 53653c6b upstream. In case of an invalid pin value bcm2835_pctl_dt_node_to_map() would leak the pull configs of already assigned pins. So avoid this by calling the free map function in error case. Signed-off-by:
Stefan Wahren <stefan.wahren@i2se.com> Fixes: e1b2dc70 ("pinctrl: add bcm2835 driver") Reviewed-by:
Eric Anholt <eric@anholt.net> Signed-off-by:
Linus Walleij <linus.walleij@linaro.org> [ luis: backported to 3.16: - file rename: drivers/pinctrl/bcm/pinctrl-bcm2835.c -> drivers/pinctrl/pinctrl-bcm2835.c ] Signed-off-by:
-
Andy Shevchenko authored
commit dbec6719 upstream. The commit d7ba858a (ALSA: fm801: implement TEA575x tuner autodetection) brings autodetection to the driver. However the autodetection algorithm misses the TUNER_ONLY bit if it is supplied by the user. Thus, user gets weird messages and no card registered. snd_fm801 0000:0d:01.0: detected TEA575x radio type SF64-PCR snd_fm801 0000:0d:01.0: AC'97 interface is busy (1) snd_fm801 0000:0d:01.0: AC'97 interface is busy (1) ... snd_fm801 0000:0d:01.0: AC'97 0 does not respond - RESET snd_fm801 0000:0d:01.0: AC'97 interface is busy (1) snd_fm801 0000:0d:01.0: AC'97 interface is busy (1) snd_fm801 0000:0d:01.0: AC'97 0 access is not valid [0x0], removing mixer. snd_fm801: probe of 0000:0d:01.0 failed with error -5 Do a copy of TUNER_ONLY bit to be applied after autodetection is done. Fixes: d7ba858a (ALSA: fm801: implement TEA575x tuner autodetection) Signed-off-by:
Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Ondrej Zary <linux@rainbow-software.org> Signed-off-by:
Takashi Iwai <tiwai@suse.de> Signed-off-by:
-
Boris BREZILLON authored
commit 8142b47e upstream. Nobody uses the get_platform_nandchip() helper function which is supposed to return a pointer to a platform_nand_chip struct from an mtd_info pointer. Moreover, this function is buggy since the introduction of the plat_nand layer (chip->priv is now storing a pointer to an intermediate plat_nand_data structure allocated in plat_nand_probe(), and we have no way to retrieve a pointer to the provided platform_nand_chip struct from this plat_nand_data pointer). While we are at it, remove the useless (and buggy, since it's pointing to something stored on the stack) data->chip.priv assignment. Signed-off-by:
Boris Brezillon <boris.brezillon@free-electrons.com> Fixes: 711fdf62 ("[MTD] [NAND] platform NAND driver: add driver") Cc: Vitaly Wool <vitalywool@gmail.com> Signed-off-by:
-
Boris BREZILLON authored
commit 320092a0 upstream. Unregister the NAND device from the NAND subsystem when removing a denali NAND controller, otherwise the MTD attached to the NAND device is still exposed by the MTD layer, and accesses to this device will likely crash the system. Fixes: 2a0a288e ("mtd: denali: split the generic driver and PCI layer") Signed-off-by:
Dinh Nguyen <dinguyen@opensource.altera.com> Signed-off-by:
-
Boris BREZILLON authored
commit de64aa9e upstream. src_ssync_features field is only 1 byte large, and the 4th reserved area is actually 8 bytes large. Fixes: d1e1f4e4 ("mtd: nand: add support for reading ONFI parameters from NAND device") Signed-off-by:
-
Dan Carpenter authored
commit 3a318426 upstream. We check for overflow here, but we don't check for underflow so it causes a static checker warning. Fixes: fb9987d0 ('ath9k_htc: Support for AR9271 chipset.') Signed-off-by:
Kalle Valo <kvalo@codeaurora.org> Signed-off-by:
-
Arnd Bergmann authored
commit 2dd52d7f upstream. quadfs_pll_fs660c32_round_rate prints a few structure members that are never initialized, and also doesn't print the only one it cares about. We get a gcc warning about the ones that are printed: clk/st/clkgen-fsyn.c:560:93: warning: 'params.sdiv' may be used uninitialized in this function clk/st/clkgen-fsyn.c:560:93: warning: 'params.mdiv' may be used uninitialized in this function clk/st/clkgen-fsyn.c:560:93: warning: 'params.pe' may be used uninitialized in this function clk/st/clkgen-fsyn.c:560:93: warning: 'params.nsdiv' may be used uninitialized in this function This changes the code to no longer print uninitialized data, and for good measure it also prints the ndiv member that is being set. Signed-off-by:
Gabriel Fernandez <gabriel.fernandez@linaro.org> Signed-off-by:
Stephen Boyd <sboyd@codeaurora.org> [ luis: backported to 3.16: adjusted context ] Signed-off-by:
-
Loc Ho authored
commit 1382ea63 upstream. The X-Gene clock driver missed the divider shift operation when set the divider value. Signed-off-by:
Loc Ho <lho@apm.com> Fixes: 308964ca ("clk: Add APM X-Gene SoC clock driver") Signed-off-by:
-
Arnd Bergmann authored
commit d282e2b3 upstream. The initio driver has for many years had two copies of the same module device table. One of them is also used for registering the other driver, the other one is entirely useless after the large scale cleanup that Alan Cox did back in 2007. The compiler warns about this whenever the driver is built-in: drivers/scsi/initio.c:131:29: warning: 'i91u_pci_devices' defined but not used [-Wunused-variable] This removes the extraneous table and the warning. Signed-off-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by:
-
Russell King authored
commit 2ff56fad upstream. rc-main mistakenly uses #ifdef MODULE to determine whether it should load the rc keymap modules. This symbol is only defined if rc-main is being built as a module itself, and bears no relation to whether the rc keymaps are modules. Fix this to use CONFIG_MODULES instead. Fixes: 631493ec ("[media] rc-core: merge rc-map.c into rc-main.c") Signed-off-by:
Mauro Carvalho Chehab <mchehab@osg.samsung.com> Signed-off-by:
-
Lukas Wunner authored
commit dcb1394e upstream. Currently when allocating a framebuffer fails, the gem object gets unrefed at the bottom of the call stack in __intel_framebuffer_create, not where it gets refed, which is in intel_framebuffer_create_for_mode (via i915_gem_alloc_object) and in intel_user_framebuffer_create (via drm_gem_object_lookup). This invites mistakes: __intel_framebuffer_create is also called from intelfb_alloc, and as discovered by Tvrtko Ursulin, a double unref was introduced there with a8bb6818 ("drm/i915: Fix error path leak in fbdev fb allocation"). As suggested by Ville Syrjälä, fix the double unref and improve code clarity by moving the unref away from __intel_framebuffer_create to where the gem object gets refed. Based on Tvrtko Ursulin's original v2. v3: On fb alloc failure, unref gem object where it gets refed, fix double unref in separate commit (Ville Syrjälä) v4: Lock struct_mutex on unref (Chris Wilson) v5: Rebase on drm-intel-nightly 2015y-09m-01d-09h-06m-08s UTC, rephrase commit message (Jani Nicula) Tested-by:
Pierre Moreau <pierre.morrow@free.fr> [MBP 5,3 2009 nvidia MCP79 + G96 pre-retina] Tested-by:
Paul Hordiienko <pvt.gord@gmail.com> [MBP 6,2 2010 intel ILK + nvidia GT216 pre-retina] Tested-by:
William Brown <william@blackhats.net.au> [MBP 8,2 2011 intel SNB + amd turks pre-retina] Tested-by:
Lukas Wunner <lukas@wunner.de> [MBP 9,1 2012 intel IVB + nvidia GK107 pre-retina] Tested-by:
Bruno Bierbaumer <bruno@bierbaumer.net> [MBP 11,3 2013 intel HSW + nvidia GK107 retina] Fixes: a8bb6818 ("drm/i915: Fix error path leak in fbdev fb allocation") Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by:
Ville Syrjälä <ville.syrjala@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/2161c5062ef5d6458f8ae14d924a26d4d1dba317.1446892879.git.lukas@wunner.deSigned-off-by:
Jani Nikula <jani.nikula@intel.com> Signed-off-by:
-
