- 15 Dec, 2015 12 commits
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David Hildenbrand authored
commit 152e9f65 upstream. For now, VCPUs were always created sequentially with incrementing VCPU ids. Therefore, the index in the VCPUs array matched the id. As sequential creation might change with cpu hotplug, let's use the correct lookup function to find a VCPU by id, not array index. Let's also use kvm_lookup_vcpu() for validation of the sending VCPU on external call injection. Reviewed-by:
Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by:
David Hildenbrand <dahi@linux.vnet.ibm.com> Signed-off-by:
Kamal Mostafa <kamal@canonical.com>
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David Hildenbrand authored
commit b85de33a upstream. Commit 383d0b05 ("KVM: s390: handle pending local interrupts via bitmap") introduced a possible memory overwrite from user space. User space could pass an invalid emergency signal code (sending VCPU) and therefore exceed the bitmap. Let's take care of this case and check that the id is in the valid range. Reviewed-by:
Dominik Dingel <dingel@linux.vnet.ibm.com> Signed-off-by:
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David Hildenbrand authored
commit db27a7a3 upstream. Let's provide a function to lookup a VCPU by id. Reviewed-by:
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James Hogan authored
commit 585bb8f9 upstream. If either of the memory allocations in kvm_arch_vcpu_create() fail, the vcpu which has been allocated and kvm_vcpu_init'd doesn't get uninit'd in the error handling path. Add a call to kvm_vcpu_uninit() to fix this. Fixes: 669e846e ("KVM/MIPS32: MIPS arch specific APIs for KVM") Signed-off-by:
James Hogan <james.hogan@imgtec.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Gleb Natapov <gleb@kernel.org> Cc: linux-mips@linux-mips.org Cc: kvm@vger.kernel.org Signed-off-by:
Paolo Bonzini <pbonzini@redhat.com> Signed-off-by:
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James Hogan authored
commit c5c2a3b9 upstream. The immediate field of the CACHE instruction is signed, so ensure that it gets sign extended by casting it to an int16_t rather than just masking the low 16 bits. Fixes: e685c689 ("KVM/MIPS32: Privileged instruction/target branch emulation.") Signed-off-by:
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James Hogan authored
commit 002374f3 upstream. ASID restoration on guest resume should determine the guest execution mode based on the guest Status register rather than bit 30 of the guest PC. Fix the two places in locore.S that do this, loading the guest status from the cop0 area. Note, this assembly is specific to the trap & emulate implementation of KVM, so it doesn't need to check the supervisor bit as that mode is not implemented in the guest. Fixes: b680f70f ("KVM/MIPS32: Entry point for trampolining to...") Signed-off-by:
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Junichi Nomura authored
commit 5bbbfdf6 upstream. dm-mpath retries ioctl, when no path is readily available and the device is configured to queue I/O in such a case. If you want to stop the retry before multipathd decides to turn off queueing mode, you could send signal for the process to exit from the loop. However the check of fatal signal has not carried along when commit 6c182cd8 ("dm mpath: fix ioctl deadlock when no paths") moved the loop from dm-mpath to dm core. As a result, we can't terminate such a process in the retry loop. Easy reproducer of the situation is: # dmsetup create mp --table '0 1024 multipath 0 0 0 0' # dmsetup message mp 0 'queue_if_no_path' # sg_inq /dev/mapper/mp then you should be able to terminate sg_inq by pressing Ctrl+C. Fixes: 6c182cd8 ("dm mpath: fix ioctl deadlock when no paths") Signed-off-by:
Jun'ichi Nomura <j-nomura@ce.jp.nec.com> Cc: Hannes Reinecke <hare@suse.de> Cc: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by:
Mike Snitzer <snitzer@redhat.com> [ luis: backported to 3.16: adjusted context ] Signed-off-by:
Luis Henriques <luis.henriques@canonical.com> Signed-off-by:
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Mike Snitzer authored
commit 172c2386 upstream. A thin-pool that is in out-of-data-space (OODS) mode may transition back to write mode -- without the admin adding more space to the thin-pool -- if/when blocks are released (either by deleting thin devices or discarding provisioned blocks). But as part of the thin-pool's earlier transition to out-of-data-space mode the thin-pool may have set the 'error_if_no_space' flag to true if the no_space_timeout expires without more space having been made available. That implementation detail, of changing the pool's error_if_no_space setting, needs to be reset back to the default that the user specified when the thin-pool's table was loaded. Otherwise we'll drop the user requested behaviour on the floor when this out-of-data-space to write mode transition occurs. Reported-by:
Vivek Goyal <vgoyal@redhat.com> Signed-off-by:
Joe Thornber <ejt@redhat.com> Fixes: 2c43fd26 ("dm thin: fix missing out-of-data-space to write mode transition if blocks are released") Signed-off-by:
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Clemens Ladisch authored
commit a91e627e upstream. One of the many faults of the QinHeng CH345 USB MIDI interface chip is that it does not handle received SysEx messages correctly -- every second event packet has a wrong code index number, which is the one from the last seen message, instead of 4. For example, the two messages "FE F0 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E F7" result in the following event packets: correct: CH345: 0F FE 00 00 0F FE 00 00 04 F0 01 02 04 F0 01 02 04 03 04 05 0F 03 04 05 04 06 07 08 04 06 07 08 04 09 0A 0B 0F 09 0A 0B 04 0C 0D 0E 04 0C 0D 0E 05 F7 00 00 05 F7 00 00 A class-compliant driver must interpret an event packet with CIN 15 as having a single data byte, so the other two bytes would be ignored. The message received by the host would then be missing two bytes out of six; in this example, "F0 01 02 03 06 07 08 09 0C 0D 0E F7". These corrupted SysEx event packages contain only data bytes, while the CH345 uses event packets with a correct CIN value only for messages with a status byte, so it is possible to distinguish between these two cases by checking for the presence of this status byte. (Other bugs in the CH345's input handling, such as the corruption resulting from running status, cannot be worked around.) Signed-off-by:
Clemens Ladisch <clemens@ladisch.de> Signed-off-by:
Takashi Iwai <tiwai@suse.de> Signed-off-by:
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Clemens Ladisch authored
commit 1ca8b201 upstream. The CH345 USB MIDI chip has two output ports. However, they are multiplexed through one pin, and the number of ports cannot be reduced even for hardware that implements only one connector, so for those devices, data sent to either port ends up on the same hardware output. This becomes a problem when both ports are used at the same time, as longer MIDI commands (such as SysEx messages) are likely to be interrupted by messages from the other port, and thus to get lost. It would not be possible for the driver to detect how many ports the device actually has, except that in practice, _all_ devices built with the CH345 have only one port. So we can just ignore the device's descriptors, and hardcode one output port. Signed-off-by:
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Clemens Ladisch authored
commit 98d362be upstream. Signed-off-by:
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Sabrina Dubroca authored
commit e639b8d8 upstream. Reset pskb in macvlan_handle_frame in case skb_share_check returned a clone. Fixes: 8a4eb573 ("net: introduce rx_handler results and logic around that") Signed-off-by:
Sabrina Dubroca <sd@queasysnail.net> Signed-off-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
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- 14 Dec, 2015 28 commits
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Noa Osherovich authored
commit d49c2197 upstream. The err variable wasn't set with the correct error value in some cases. Fixes: 47605df9 ('mlx4: Modify proxy/tunnel QP mechanism [..]') Signed-off-by:
Noa Osherovich <noaos@mellanox.com> Signed-off-by:
Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by:
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Daniel Borkmann authored
[ Upstream commit 5cfb4c8d ] Since it's introduction in commit 69e3c75f ("net: TX_RING and packet mmap"), TX_RING could be used from SOCK_DGRAM and SOCK_RAW side. When used with SOCK_DGRAM only, the size_max > dev->mtu + reserve check should have reserve as 0, but currently, this is unconditionally set (in it's original form as dev->hard_header_len). I think this is not correct since tpacket_fill_skb() would then take dev->mtu and dev->hard_header_len into account for SOCK_DGRAM, the extra VLAN_HLEN could be possible in both cases. Presumably, the reserve code was copied from packet_snd(), but later on missed the check. Make it similar as we have it in packet_snd(). Fixes: 69e3c75f ("net: TX_RING and packet mmap") Signed-off-by:
Daniel Borkmann <daniel@iogearbox.net> Acked-by:
Willem de Bruijn <willemb@google.com> Signed-off-by:
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Daniel Borkmann authored
[ Upstream commit 3c70c132 ] Packet sockets can be used by various net devices and are not really restricted to ARPHRD_ETHER device types. However, when currently checking for the extra 4 bytes that can be transmitted in VLAN case, our assumption is that we generally probe on ARPHRD_ETHER devices. Therefore, before looking into Ethernet header, check the device type first. This also fixes the issue where non-ARPHRD_ETHER devices could have no dev->hard_header_len in TX_RING SOCK_RAW case, and thus the check would test unfilled linear part of the skb (instead of non-linear). Fixes: 57f89bfa ("network: Allow af_packet to transmit +4 bytes for VLAN packets.") Fixes: 52f1454f ("packet: allow to transmit +4 byte in TX_RING slot for VLAN case") Signed-off-by:
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Adrian Hunter authored
commit e266a753 upstream. Commit 4598a0a6 ("perf symbols: Improve DSO long names lookup speed with rbtree") Added a tree to lookup dsos by long name. That tree gets corrupted whenever a dso long name is changed because the tree is not updated. One effect of that is buildid-list does not work with the 'with-hits' option because dso lookup fails and results in two structs for the same dso. The first has the buildid but no hits, the second has hits but no buildid. e.g. Before: $ tools/perf/perf record ls arch certs CREDITS Documentation firmware include ipc Kconfig lib Makefile net REPORTING-BUGS scripts sound usr block COPYING crypto drivers fs init Kbuild kernel MAINTAINERS mm README samples security tools virt [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.012 MB perf.data (11 samples) ] $ tools/perf/perf buildid-list 574da826c66538a8d9060d393a8866289bd06005 [kernel.kallsyms] 30c94dc66a1fe95180c3d68d2b89e576d5ae213c /lib/x86_64-linux-gnu/libc-2.19.so $ tools/perf/perf buildid-list -H 574da826c66538a8d9060d393a8866289bd06005 [kernel.kallsyms] 0000000000000000000000000000000000000000 /lib/x86_64-linux-gnu/libc-2.19.so After: $ tools/perf/perf buildid-list -H 574da826c66538a8d9060d393a8866289bd06005 [kernel.kallsyms] 30c94dc66a1fe95180c3d68d2b89e576d5ae213c /lib/x86_64-linux-gnu/libc-2.19.so The fix is to record the root of the tree on the dso so that dso__set_long_name() can update the tree when the long name changes. Signed-off-by:
Adrian Hunter <adrian.hunter@intel.com> Tested-by:
Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Douglas Hatch <doug.hatch@hp.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Scott J Norton <scott.norton@hp.com> Cc: Waiman Long <Waiman.Long@hp.com> Fixes: 4598a0a6 ("perf symbols: Improve DSO long names lookup speed with rbtree") Link: http://lkml.kernel.org/r/1447408112-1920-2-git-send-email-adrian.hunter@intel.comSigned-off-by:
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Sabrina Dubroca authored
commit a534dc52 upstream. ipvlan_handle_frame is a rx_handler, and when it returns a value other than RX_HANDLER_CONSUMED (here, NET_RX_DROP aka RX_HANDLER_ANOTHER), __netif_receive_skb_core expects that the skb still exists and will process it further, but we just freed it. Fixes: 2ad7bf36 ("ipvlan: Initial check-in of the IPVLAN driver.") Signed-off-by:
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Sabrina Dubroca authored
commit cf554ada upstream. Pass a **skb to ipvlan_rcv_frame so that if skb_share_check returns a new skb, we actually use it during further processing. It's safe to ignore the new skb in the ipvlan_xmit_* functions, because they call ipvlan_rcv_frame with local == true, so that dev_forward_skb is called and always takes ownership of the skb. Fixes: 2ad7bf36 ("ipvlan: Initial check-in of the IPVLAN driver.") Signed-off-by:
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Geert Uytterhoeven authored
commit cf897526 upstream. fs/cachefiles/rdwr.c: In function ‘cachefiles_write_page’: fs/cachefiles/rdwr.c:882: warning: ‘ret’ may be used uninitialized in this function If the jump to label "error" is taken, "ret" will indeed be uninitialized, and random stack data may be printed by the debug code. Fixes: 102f4d90 ("FS-Cache: Handle a write to the page immediately beyond the EOF marker") Signed-off-by:
Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by:
David Howells <dhowells@redhat.com> Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
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Uwe Kleine-König authored
commit 705e63d2 upstream. There is a bit of a mess in the order of arguments to the ulpi write callback. There is int ulpi_write(struct ulpi *ulpi, u8 addr, u8 val) in drivers/usb/common/ulpi.c; struct usb_phy_io_ops { ... int (*write)(struct usb_phy *x, u32 val, u32 reg); } in include/linux/usb/phy.h. The callback registered by the musb driver has to comply to the latter, but up to now had "offset" first which effectively made the function broken for correct users. So flip the order and while at it also switch to the parameter names of struct usb_phy_io_ops's write. Fixes: ffb865b1 ("usb: musb: add ulpi access operations") Signed-off-by:
Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by:
Felipe Balbi <balbi@ti.com> Signed-off-by:
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lucien authored
commit ed5a377d upstream. now sctp auth cannot work well when setting a hmacid manually, which is caused by that we didn't use the network order for hmacid, so fix it by adding the transformation in sctp_auth_ep_set_hmacs. even we set hmacid with the network order in userspace, it still can't work, because of this condition in sctp_auth_ep_set_hmacs(): if (id > SCTP_AUTH_HMAC_ID_MAX) return -EOPNOTSUPP; so this wasn't working before and thus it won't break compatibility. Fixes: 65b07e5d ("[SCTP]: API updates to suport SCTP-AUTH extensions.") Signed-off-by:
Xin Long <lucien.xin@gmail.com> Signed-off-by:
Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Acked-by:
Neil Horman <nhorman@tuxdriver.com> Acked-by:
Vlad Yasevich <vyasevich@gmail.com> Signed-off-by:
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Daniel Borkmann authored
commit efdfa2f7 upstream. In tpacket_fill_skb() commit c1aad275 ("packet: set transport header before doing xmit") and later on 40893fd0 ("net: switch to use skb_probe_transport_header()") was probing for a transport header on the skb from a ring buffer slot, but at a time, where the skb has _not even_ been filled with data yet. So that call into the flow dissector is pretty useless. Lets do it after we've set up the skb frags. Fixes: c1aad275 ("packet: set transport header before doing xmit") Reported-by:
Eric Dumazet <edumazet@google.com> Signed-off-by:
Jason Wang <jasowang@redhat.com> Signed-off-by:
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Kamal Mostafa authored
commit d7475de5 upstream. Use the local uapi headers to keep in sync with "recently" added #define's (e.g. SKF_AD_VLAN_TPID). Refactored CFLAGS, and bpf_asm doesn't need -I. Fixes: 3f356385 ("filter: bpf_asm: add minimal bpf asm tool") Acked-by:
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Luca Porzio authored
commit d3df0465 upstream. Anytime a write operation is performed with Reliable Write flag enabled, the eMMC device is enforced to bypass the cache and do a write to the underling NVM device by Jedec specification; this causes a performance penalty since write operations can't be optimized by the device cache. In our tests, we replayed a typical mobile daily trace pattern and found ~9% overall time reduction in trace replay by using this patch. Also the write ops within 4KB~64KB chunk size range get a 40~60% performance improvement by using the patch (as this range of write chunks are the ones affected by REQ_META). This patch has been discussed in the Mobile & Embedded Linux Storage Forum and it's the results of feedbacks from many people. We also checked with fsdevl and f2fs mailing list developers that this change in the usage of REQ_META is not affecting FS behavior and we got positive feedbacks. Reporting here the feedbacks: http://comments.gmane.org/gmane.linux.file-systems/97219 http://thread.gmane.org/gmane.linux.file-systems.f2fs/3178/focus=3183Signed-off-by:
Bruce Ford <bford@micron.com> Signed-off-by:
Luca Porzio <lporzio@micron.com> Fixes: ce39f9d1 ("mmc: support packed write command for eMMC4.5 devices") Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by:
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Helge Deller authored
commit dcbf0d29 upstream. Drop the MADV_xxK_PAGES flags, which were never used and were from a proposed API which was never integrated into the generic Linux kernel code. Signed-off-by:
Helge Deller <deller@gmx.de> Signed-off-by:
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Peter Hurley authored
commit ee0c1a65 upstream. The correct lock order is atomic_write_lock => termios_rwsem, as established by tty_write() => n_tty_write(). Fixes: c274f6ef ("tty: Hold termios_rwsem for tcflow(TCIxxx)") Reported-and-Tested-by:
Dmitry Vyukov <dvyukov@google.com> Signed-off-by:
Peter Hurley <peter@hurleysoftware.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
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Junxiao Bi authored
commit 8f1eb487 upstream. New created file's mode is not masked with umask, and this makes umask not work for ocfs2 volume. Fixes: 702e5bc6 ("ocfs2: use generic posix ACL infrastructure") Signed-off-by:
Junxiao Bi <junxiao.bi@oracle.com> Cc: Gang He <ghe@suse.com> Cc: Mark Fasheh <mfasheh@suse.de> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by:
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Richard Weinberger authored
commit 9d8a7652 upstream. sigsuspend() is nowhere used except in signal.c itself, so we can mark it static do not pollute the global namespace. But this patch is more than a boring cleanup patch, it fixes a real issue on UserModeLinux. UML has a special console driver to display ttys using xterm, or other terminal emulators, on the host side. Vegard reported that sometimes UML is unable to spawn a xterm and he's facing the following warning: WARNING: CPU: 0 PID: 908 at include/linux/thread_info.h:128 sigsuspend+0xab/0xc0() It turned out that this warning makes absolutely no sense as the UML xterm code calls sigsuspend() on the host side, at least it tries. But as the kernel itself offers a sigsuspend() symbol the linker choose this one instead of the glibc wrapper. Interestingly this code used to work since ever but always blocked signals on the wrong side. Some recent kernel change made the WARN_ON() trigger and uncovered the bug. It is a wonderful example of how much works by chance on computers. :-) Fixes: 68f3f16d ("new helper: sigsuspend()") Signed-off-by:
Richard Weinberger <richard@nod.at> Reported-by:
Vegard Nossum <vegard.nossum@oracle.com> Tested-by:
Oleg Nesterov <oleg@redhat.com> Signed-off-by:
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OGAWA Hirofumi authored
commit 928a4771 upstream. For the root directory, . and .. are faked (using dir_emit_dots()) and ctx->pos is reset from 2 to 0. A corrupted root directory could cause fat_get_entry() to fail, but ->iterate() (fat_readdir()) reports progress to the VFS (with ctx->pos rewound to 0), so any following calls to ->iterate() continue to return the same entries again and again. The result is that userspace will never see the end of the directory, causing e.g. 'ls' to hang in a getdents() loop. [hirofumi@mail.parknet.co.jp: cleanup and make sure to correct fake_offset] Reported-by:
Richard Weinberger <richard.weinberger@gmail.com> Signed-off-by:
OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by:
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Jiri Slaby authored
commit 19cd80a2 upstream. It is not permitted to set task state before lock. usblp_wwait sets the state to TASK_INTERRUPTIBLE and calls mutex_lock_interruptible. Upon return from that function, the state will be TASK_RUNNING again. This is clearly a bug and a warning is generated with LOCKDEP too: WARNING: CPU: 1 PID: 5109 at kernel/sched/core.c:7404 __might_sleep+0x7d/0x90() do not call blocking ops when !TASK_RUNNING; state=1 set at [<ffffffffa0c588d0>] usblp_wwait+0xa0/0x310 [usblp] Modules linked in: ... CPU: 1 PID: 5109 Comm: captmon Tainted: G W 4.2.5-0.gef2823b-default #1 Hardware name: LENOVO 23252SG/23252SG, BIOS G2ET33WW (1.13 ) 07/24/2012 ffffffff81a4edce ffff880236ec7ba8 ffffffff81716651 0000000000000000 ffff880236ec7bf8 ffff880236ec7be8 ffffffff8106e146 0000000000000282 ffffffff81a50119 000000000000028b 0000000000000000 ffff8802dab7c508 Call Trace: ... [<ffffffff8106e1c6>] warn_slowpath_fmt+0x46/0x50 [<ffffffff8109a8bd>] __might_sleep+0x7d/0x90 [<ffffffff8171b20f>] mutex_lock_interruptible_nested+0x2f/0x4b0 [<ffffffffa0c588fc>] usblp_wwait+0xcc/0x310 [usblp] [<ffffffffa0c58bb2>] usblp_write+0x72/0x350 [usblp] [<ffffffff8121ed98>] __vfs_write+0x28/0xf0 ... Commit 7f477358 (usblp: Implement the ENOSPC convention) moved the set prior locking. So move it back after the lock. Signed-off-by:
Jiri Slaby <jslaby@suse.cz> Fixes: 7f477358 ("usblp: Implement the ENOSPC convention") Acked-By:
Pete Zaitcev <zaitcev@yahoo.com> Signed-off-by:
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Bjørn Mork authored
commit 638148e2 upstream. Thomas reports " 4gsystems sells two total different LTE-surfsticks under the same name. .. The newer version of XS Stick W100 is from "omega" .. Under windows the driver switches to the same ID, and uses MI03\6 for network and MI01\6 for modem. .. echo "1c9e 9b01" > /sys/bus/usb/drivers/qmi_wwan/new_id echo "1c9e 9b01" > /sys/bus/usb-serial/drivers/option1/new_id T: Bus=01 Lev=01 Prnt=01 Port=03 Cnt=01 Dev#= 4 Spd=480 MxCh= 0 D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=1c9e ProdID=9b01 Rev=02.32 S: Manufacturer=USB Modem S: Product=USB Modem S: SerialNumber= C: #Ifs= 5 Cfg#= 1 Atr=80 MxPwr=500mA I: If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option I: If#= 1 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=option I: If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=option I: If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=qmi_wwan I: If#= 4 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage Now all important things are there: wwp0s29f7u2i3 (net), ttyUSB2 (at), cdc-wdm0 (qmi), ttyUSB1 (at) There is also ttyUSB0, but it is not usable, at least not for at. The device works well with qmi and ModemManager-NetworkManager. " Reported-by:
Thomas Schäfer <tschaefer@t-online.de> Signed-off-by:
Bjørn Mork <bjorn@mork.no> Signed-off-by:
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Yang Shi authored
commit 92e788b7 upstream. As previously reported, some userspace applications depend on bogomips showed by /proc/cpuinfo. Although there is much less legacy impact on aarch64 than arm, it does break libvirt. This patch reverts commit 326b16db ("arm64: delay: don't bother reporting bogomips in /proc/cpuinfo"), but with some tweak due to context change and without the pr_info(). Fixes: 326b16db ("arm64: delay: don't bother reporting bogomips in /proc/cpuinfo") Signed-off-by:
Yang Shi <yang.shi@linaro.org> Acked-by:
Will Deacon <will.deacon@arm.com> Signed-off-by:
Catalin Marinas <catalin.marinas@arm.com> [ kamal: backport to 3.19-stable: applies to setup.c; context ] Signed-off-by:
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Andrew Cooper authored
commit 581b7f15 upstream. There appears to be no formal statement of what pv_irq_ops.save_fl() is supposed to return precisely. Native returns the full flags, while lguest and Xen only return the Interrupt Flag, and both have comments by the implementations stating that only the Interrupt Flag is looked at. This may have been true when initially implemented, but no longer is. To make matters worse, the Xen PVOP leaves the upper bits undefined, making the BUG_ON() undefined behaviour. Experimentally, this now trips for 32bit PV guests on Broadwell hardware. The BUG_ON() is consistent for an individual build, but not consistent for all builds. It has also been a sitting timebomb since SMAP support was introduced. Use native_save_fl() instead, which will obtain an accurate view of the AC flag. Signed-off-by:
Andrew Cooper <andrew.cooper3@citrix.com> Reviewed-by:
David Vrabel <david.vrabel@citrix.com> Tested-by:
Rusty Russell <rusty@rustcorp.com.au> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: <lguest@lists.ozlabs.org> Cc: Xen-devel <xen-devel@lists.xen.org> Link: http://lkml.kernel.org/r/1433323874-6927-1-git-send-email-andrew.cooper3@citrix.comSigned-off-by:
Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
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Mathias Nyman authored
commit dad67d5f upstream. Clear device initiated resume variables once device is fully up and running in U0 state. Resume needs to be signaled for 20ms for usb2 devices before they can be moved to U0 state. An interrupt is triggered if a device initiates resume. As we handle the event in interrupt context we can not sleep for 20ms, so we instead set a resume flag, a timestamp, and start the roothub polling. The roothub code will later move the port to U0 when it finds a port in resume state with the resume flag set, and timestamp passed by 20ms. A host initiated resume is however not done in interrupt context, and host initiated resume code will directly signal resume, wait 20ms and then move the port to U0. These two codepaths can race, if we are in the middle of a host initated resume, while sleeping for 20ms, we may handle a port event and find the port in resume state. The port event handling code will assume the resume was device initiated and set the resume flag and timestamp. Root hub code will however not catch the port in resume state again as the host initated resume code has already moved the port to U0. The resume flag and timestamp will remain set for this port preventing port from suspending again (LPM setting port to U3) Fix this for now by always clearing the device initated resume parameters once port is in U0 Signed-off-by:
Mathias Nyman <mathias.nyman@linux.intel.com> Signed-off-by:
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Rajmohan Mani authored
commit a5964396 upstream. Existing Intel xHCI controllers require a delay of 1 mS, after setting the CMD_RESET bit in command register, before accessing any HC registers. This allows the HC to complete the reset operation and be ready for HC register access. Without this delay, the subsequent HC register access, may result in a system hang, very rarely. Verified CherryView / Braswell platforms go through over 5000 warm reboot cycles (which was not possible without this patch), without any xHCI reset hang. Signed-off-by:
Rajmohan Mani <rajmohan.mani@intel.com> Tested-by:
Joe Lawrence <joe.lawrence@stratus.com> Signed-off-by:
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Li Jun authored
commit 251b3c8b upstream. Since the ci->role will be set after the host role start is complete, there will be nobody cared irq during start host if usb irq enabled. This error can be reproduced on i.mx6 sololite EVK board by: 1. disable otg id irq(IDIE) and disable all real otg properties of usbotg1 in dts. 2. boot up the board with ID cable and usb device connected. 3. echo gadget > /sys/kernel/debug/ci_hdrc.0/role 4. echo host > /sys/kernel/debug/ci_hdrc.0/role 5. irq 212: nobody cared. Signed-off-by:
Li Jun <jun.li@freescale.com> Signed-off-by:
Peter Chen <peter.chen@freescale.com> Signed-off-by:
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Ben McCauley authored
commit b9e51b2b upstream. In some SoCs, dwc3 is implemented as a USB2.0 only core, meaning that it can't ever achieve SuperSpeed. Currect driver always sets gadget.max_speed to USB_SPEED_SUPER unconditionally. This can causes issues to some Host stacks where the host will issue a GetBOS() request and we will reply with a BOS containing Superspeed Capability Descriptor. At least Windows seems to be upset by this fact and prints a warning that we should connect $this device to another port. [ balbi@ti.com : rewrote entire commit, including source code comment to make a lot clearer what the problem is ] Signed-off-by:
Ben McCauley <ben.mccauley@garmin.com> Signed-off-by:
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Lorenzo Pieralisi authored
commit de818bd4 upstream. The function graph tracer adds instrumentation that is required to trace both entry and exit of a function. In particular the function graph tracer updates the "return address" of a function in order to insert a trace callback on function exit. Kernel power management functions like cpu_suspend() are called upon power down entry with functions called "finishers" that are in turn called to trigger the power down sequence but they may not return to the kernel through the normal return path. When the core resumes from low-power it returns to the cpu_suspend() function through the cpu_resume path, which leaves the trace stack frame set-up by the function tracer in an incosistent state upon return to the kernel when tracing is enabled. This patch fixes the issue by pausing/resuming the function graph tracer on the thread executing cpu_suspend() (ie the function call that subsequently triggers the "suspend finishers"), so that the function graph tracer state is kept consistent across functions that enter power down states and never return by effectively disabling graph tracer while they are executing. Fixes: 819e50e2 ("arm64: Add ftrace support") Signed-off-by:
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reported-by:
AKASHI Takahiro <takahiro.akashi@linaro.org> Suggested-by:
Steven Rostedt <rostedt@goodmis.org> Acked-by:
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Bjørn Mork authored
commit 59536da3 upstream. The DEVICE_HWI type was added under the faulty assumption that Huawei devices based on Qualcomm chipsets and firmware use the static USB interface numbering known from Gobi devices. But this model does not apply to Huawei devices like the HP branded lt4112 (Huawei me906e). Huawei firmwares will dynamically assign interface numbers. Functions are renumbered when the firmware is reconfigured. Fix by changing the DEVICE_HWI type to use a simplified version of Huawei's subclass + protocol scheme: Blacklisting known network interface combinations and assuming the rest are serial. Reported-and-tested-by:
Muri Nicanor <muri+libqmi@immerda.ch> Tested-by:
Martin Hauke <mardnh@gmx.de> Fixes: e7181d00 ("USB: qcserial: Add support for HP lt4112 LTE/HSPA+ Gobi 4G Modem") Signed-off-by:
Johan Hovold <johan@kernel.org> Signed-off-by:
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Alex Deucher authored
commit 24dd2f64 upstream. Avoids spew on resume for systems where sysfs may fail even on init. bug: https://bugzilla.kernel.org/show_bug.cgi?id=106851Signed-off-by:
Alex Deucher <alexander.deucher@amd.com> Signed-off-by:
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