- 09 May, 2015 27 commits
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Malcolm Priestley authored
commit 15e1ce33 upstream. A quirk of some older firmwares that report endpoint pipe type as PIPE_BULK but the endpoint otheriwse functions as interrupt. Check if usb_endpoint_type is USB_ENDPOINT_XFER_BULK and set as usb_rcvbulkpipe. Signed-off-by:
Malcolm Priestley <tvboxspy@gmail.com> Signed-off-by:
Mauro Carvalho Chehab <mchehab@osg.samsung.com> [bwh: Backported to 3.2: - Adjust filename, context - Add definition of the local variable 'd'] Signed-off-by:
Ben Hutchings <ben@decadent.org.uk>
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Peter Hurley authored
commit 37480a05 upstream. Commit 26df6d13 ("tty: Add EXTPROC support for LINEMODE") allows a process which has opened a pty master to send _any_ signal to the process group of the pty slave. Although potentially exploitable by a malicious program running a setuid program on a pty slave, it's unknown if this exploit currently exists. Limit to signals actually used. Cc: Theodore Ts'o <tytso@mit.edu> Cc: Howard Chu <hyc@symas.com> Cc: One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk> Cc: Jiri Slaby <jslaby@suse.cz> Signed-off-by:
Peter Hurley <peter@hurleysoftware.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
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Nicolas Pitre authored
commit 19e3ae6b upstream. The vcs device's poll/fasync support relies on the vt notifier to signal changes to the screen content. Notifier invocations were missing for changes that comes through the selection interface though. Fix that. Tested with BRLTTY 5.2. Signed-off-by:
Nicolas Pitre <nico@linaro.org> Cc: Dave Mielke <dave@mielke.cc> Signed-off-by:
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Alan Stern authored
commit c9919790 upstream. The usb_hcd_unlink_urb() routine in hcd.c contains two possible use-after-free errors. The dev_dbg() statement at the end of the routine dereferences urb and urb->dev even though both structures may have been deallocated. This patch fixes the problem by storing urb->dev in a local variable (avoiding the dereference of urb) and moving the dev_dbg() up before the usb_put_dev() call. Signed-off-by:
Alan Stern <stern@rowland.harvard.edu> Reported-by:
Joe Lawrence <joe.lawrence@stratus.com> Tested-by:
Greg Kroah-Hartman <greg@kroah.com> Signed-off-by:
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Alan Stern authored
commit 074f9dd5 upstream. Currently the USB stack assumes that all host controller drivers are capable of receiving wakeup requests from downstream devices. However, this isn't true for the isp1760-hcd driver, which means that it isn't safe to do a runtime suspend of any device attached to a root-hub port if the device requires wakeup. This patch adds a "cant_recv_wakeups" flag to the usb_hcd structure and sets the flag in isp1760-hcd. The core is modified to prevent a direct child of the root hub from being put into runtime suspend with wakeup enabled if the flag is set. Signed-off-by:
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Oliver Neukum authored
commit 7e860a6e upstream. Check the special CDC headers for a plausible minimum length. Another big operating systems ignores such garbage. Signed-off-by:
Oliver Neukum <oneukum@suse.de> Reviewed-by:
Adam Lee <adam8157@gmail.com> Tested-by:
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Jeff Layton authored
commit 6ffa30d3 upstream. Bruce reported seeing this warning pop when mounting using v4.1: ------------[ cut here ]------------ WARNING: CPU: 1 PID: 1121 at kernel/sched/core.c:7300 __might_sleep+0xbd/0xd0() do not call blocking ops when !TASK_RUNNING; state=1 set at [<ffffffff810ff58f>] prepare_to_wait+0x2f/0x90 Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs lockd grace sunrpc fscache ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_security ip6table_raw ip6table_filter ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw snd_hda_codec_generic snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep snd_pcm snd_timer ppdev joydev snd virtio_console virtio_balloon pcspkr serio_raw parport_pc parport pvpanic floppy soundcore i2c_piix4 virtio_blk virtio_net qxl drm_kms_helper ttm drm virtio_pci virtio_ring ata_generic virtio pata_acpi CPU: 1 PID: 1121 Comm: nfsv4.1-svc Not tainted 3.19.0-rc4+ #25 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.7.5-20140709_153950- 04/01/2014 0000000000000000 000000004e5e3f73 ffff8800b998fb48 ffffffff8186ac78 0000000000000000 ffff8800b998fba0 ffff8800b998fb88 ffffffff810ac9da ffff8800b998fb68 ffffffff81c923e7 00000000000004d9 0000000000000000 Call Trace: [<ffffffff8186ac78>] dump_stack+0x4c/0x65 [<ffffffff810ac9da>] warn_slowpath_common+0x8a/0xc0 [<ffffffff810aca65>] warn_slowpath_fmt+0x55/0x70 [<ffffffff810ff58f>] ? prepare_to_wait+0x2f/0x90 [<ffffffff810ff58f>] ? prepare_to_wait+0x2f/0x90 [<ffffffff810dd2ad>] __might_sleep+0xbd/0xd0 [<ffffffff8124c973>] kmem_cache_alloc_trace+0x243/0x430 [<ffffffff810d941e>] ? groups_alloc+0x3e/0x130 [<ffffffff810d941e>] groups_alloc+0x3e/0x130 [<ffffffffa0301b1e>] svcauth_unix_accept+0x16e/0x290 [sunrpc] [<ffffffffa0300571>] svc_authenticate+0xe1/0xf0 [sunrpc] [<ffffffffa02fc564>] svc_process_common+0x244/0x6a0 [sunrpc] [<ffffffffa02fd044>] bc_svc_process+0x1c4/0x260 [sunrpc] [<ffffffffa03d5478>] nfs41_callback_svc+0x128/0x1f0 [nfsv4] [<ffffffff810ff970>] ? wait_woken+0xc0/0xc0 [<ffffffffa03d5350>] ? nfs4_callback_svc+0x60/0x60 [nfsv4] [<ffffffff810d45bf>] kthread+0x11f/0x140 [<ffffffff810ea815>] ? local_clock+0x15/0x30 [<ffffffff810d44a0>] ? kthread_create_on_node+0x250/0x250 [<ffffffff81874bfc>] ret_from_fork+0x7c/0xb0 [<ffffffff810d44a0>] ? kthread_create_on_node+0x250/0x250 ---[ end trace 675220a11e30f4f2 ]--- nfs41_callback_svc does most of its work while in TASK_INTERRUPTIBLE, which is just wrong. Fix that by finishing the wait immediately if we've found that the list has something on it. Also, we don't expect this kthread to accept signals, so we should be using a TASK_UNINTERRUPTIBLE sleep instead. That however, opens us up hung task warnings from the watchdog, so have the schedule_timeout wake up every 60s if there's no callback activity. Reported-by:
"J. Bruce Fields" <bfields@fieldses.org> Signed-off-by:
Jeff Layton <jlayton@primarydata.com> Signed-off-by:
Trond Myklebust <trond.myklebust@primarydata.com> [bwh: Backported to 3.2: adjust context] Signed-off-by:
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Chuck Lever authored
commit 5ae711a2 upstream. If ib_query_qp() fails or the memory registration mode isn't supported, don't leak the PD. An orphaned IB/core resource will cause IB module removal to hang. Fixes: bd7ed1d1 ("RPC/RDMA: check selected memory registration ...") Signed-off-by:
Chuck Lever <chuck.lever@oracle.com> Reviewed-by:
Steve Wise <swise@opengridcomputing.com> Signed-off-by:
Anna Schumaker <Anna.Schumaker@Netapp.com> [bwh: Backported to 3.2: - Adjust context - There are only 2 goto's to be changed, not 3] Signed-off-by:
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Dmitry Eremin-Solenikov authored
commit e461894d upstream. StrongARM core uses RCSR SMR bit to tell to bootloader that it was reset by entering the sleep mode. After we have resumed, there is little point in having that bit enabled. Moreover, if this bit is set before reboot, the bootloader can become confused. Thus clear the SMR bit on resume just before clearing the scratchpad (resume address) register. Signed-off-by:
Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Signed-off-by:
Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by:
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Ian Abbott authored
commit 42b8ce6f upstream. `do_cmd_ioctl()` in "comedi_fops.c" handles the `COMEDI_CMD` ioctl. This returns `-EAGAIN` if it has copied a modified `struct comedi_cmd` back to user-space. (This occurs when the low-level Comedi driver's `do_cmdtest()` handler returns non-zero to indicate a problem with the contents of the `struct comedi_cmd`, or when the `struct comedi_cmd` has the `CMDF_BOGUS` flag set.) `compat_cmd()` in "comedi_compat32.c" handles the 32-bit compatible version of the `COMEDI_CMD` ioctl. Currently, it never copies a 32-bit compatible version of `struct comedi_cmd` back to user-space, which is at odds with the way the regular `COMEDI_CMD` ioctl is handled. To fix it, change `compat_cmd()` to copy a 32-bit compatible version of the `struct comedi_cmd` back to user-space when the main ioctl handler returns `-EAGAIN`. Signed-off-by:
Ian Abbott <abbotti@mev.co.uk> Reviewed-by:
H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by:
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Rasmus Villemoes authored
commit 19e353f2 upstream. The intention is obviously to sign-extend a 12 bit quantity. But because of C's promotion rules, the assignment is equivalent to "val16 &= 0xfff;". Use the proper API for this. Signed-off-by:
Rasmus Villemoes <linux@rasmusvillemoes.dk> Acked-by:
Lars-Peter Clausen <lars@metafoo.de> Signed-off-by:
Jonathan Cameron <jic23@kernel.org> [bwh: Backported to 3.2: adjust filename, context] Signed-off-by:
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Lennart Sorensen authored
commit a6f03312 upstream. Added the USB serial console device ID for Siemens Ruggedcom devices which have a USB port for their serial console. Signed-off-by:
Len Sorensen <lsorense@csclub.uwaterloo.ca> Signed-off-by:
Johan Hovold <johan@kernel.org> Signed-off-by:
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Michel Dänzer authored
commit 16b036af upstream. If the image size would ever read as 0, pci_get_rom_size() could keep processing the same image over and over again. Exit the loop if we ever read a length of zero. This fixes a soft lockup on boot when the radeon driver calls pci_get_rom_size() on an AMD Radeon R7 250X PCIe discrete graphics card. [bhelgaas: changelog, reference] Link: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1386973Reported-by:
Federico <federicotg@gmail.com> Signed-off-by:
Michel Dänzer <michel.daenzer@amd.com> Signed-off-by:
Bjorn Helgaas <bhelgaas@google.com> Reviewed-by:
Alex Deucher <alexander.deucher@amd.com> Signed-off-by:
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David Hildenbrand authored
commit 0ac96caf upstream. The hrtimer that handles the wait with enabled timer interrupts should not be disturbed by changes of the host time. This patch changes our hrtimer to be based on a monotonic clock. Signed-off-by:
David Hildenbrand <dahi@linux.vnet.ibm.com> Acked-by:
Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by:
Christian Borntraeger <borntraeger@de.ibm.com> [bwh: Backported to 3.2: adjust context] Signed-off-by:
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Andrey Ryabinin authored
commit 6d1cff2a upstream. We hit use after free on dereferncing pointer to task_smack struct in smk_of_task() called from smack_task_to_inode(). task_security() macro uses task_cred_xxx() to get pointer to the task_smack. task_cred_xxx() could be used only for non-pointer members of task's credentials. It cannot be used for pointer members since what they point to may disapper after dropping RCU read lock. Mainly task_security() used this way: smk_of_task(task_security(p)) Intead of this introduce function smk_of_task_struct() which takes task_struct as argument and returns pointer to smk_known struct and do this under RCU read lock. Bogus task_security() macro is not used anymore, so remove it. KASan's report for this: AddressSanitizer: use after free in smack_task_to_inode+0x50/0x70 at addr c4635600 ============================================================================= BUG kmalloc-64 (Tainted: PO): kasan error ----------------------------------------------------------------------------- Disabling lock debugging due to kernel taint INFO: Allocated in new_task_smack+0x44/0xd8 age=39 cpu=0 pid=1866 kmem_cache_alloc_trace+0x88/0x1bc new_task_smack+0x44/0xd8 smack_cred_prepare+0x48/0x21c security_prepare_creds+0x44/0x4c prepare_creds+0xdc/0x110 smack_setprocattr+0x104/0x150 security_setprocattr+0x4c/0x54 proc_pid_attr_write+0x12c/0x194 vfs_write+0x1b0/0x370 SyS_write+0x5c/0x94 ret_fast_syscall+0x0/0x48 INFO: Freed in smack_cred_free+0xc4/0xd0 age=27 cpu=0 pid=1564 kfree+0x270/0x290 smack_cred_free+0xc4/0xd0 security_cred_free+0x34/0x3c put_cred_rcu+0x58/0xcc rcu_process_callbacks+0x738/0x998 __do_softirq+0x264/0x4cc do_softirq+0x94/0xf4 irq_exit+0xbc/0x120 handle_IRQ+0x104/0x134 gic_handle_irq+0x70/0xac __irq_svc+0x44/0x78 _raw_spin_unlock+0x18/0x48 sync_inodes_sb+0x17c/0x1d8 sync_filesystem+0xac/0xfc vdfs_file_fsync+0x90/0xc0 vfs_fsync_range+0x74/0x7c INFO: Slab 0xd3b23f50 objects=32 used=31 fp=0xc4635600 flags=0x4080 INFO: Object 0xc4635600 @offset=5632 fp=0x (null) Bytes b4 c46355f0: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZZZZZ Object c4635600: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object c4635610: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object c4635620: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b kkkkkkkkkkkkkkkk Object c4635630: 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b a5 kkkkkkkkkkkkkkk. Redzone c4635640: bb bb bb bb .... Padding c46356e8: 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZZZZZZZZZ Padding c46356f8: 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZ CPU: 5 PID: 834 Comm: launchpad_prelo Tainted: PBO 3.10.30 #1 Backtrace: [<c00233a4>] (dump_backtrace+0x0/0x158) from [<c0023dec>] (show_stack+0x20/0x24) r7:c4634010 r6:d3b23f50 r5:c4635600 r4:d1002140 [<c0023dcc>] (show_stack+0x0/0x24) from [<c06d6d7c>] (dump_stack+0x20/0x28) [<c06d6d5c>] (dump_stack+0x0/0x28) from [<c01c1d50>] (print_trailer+0x124/0x144) [<c01c1c2c>] (print_trailer+0x0/0x144) from [<c01c1e88>] (object_err+0x3c/0x44) r7:c4635600 r6:d1002140 r5:d3b23f50 r4:c4635600 [<c01c1e4c>] (object_err+0x0/0x44) from [<c01cac18>] (kasan_report_error+0x2b8/0x538) r6:d1002140 r5:d3b23f50 r4:c6429cf8 r3:c09e1aa7 [<c01ca960>] (kasan_report_error+0x0/0x538) from [<c01c9430>] (__asan_load4+0xd4/0xf8) [<c01c935c>] (__asan_load4+0x0/0xf8) from [<c031e168>] (smack_task_to_inode+0x50/0x70) r5:c4635600 r4:ca9da000 [<c031e118>] (smack_task_to_inode+0x0/0x70) from [<c031af64>] (security_task_to_inode+0x3c/0x44) r5:cca25e80 r4:c0ba9780 [<c031af28>] (security_task_to_inode+0x0/0x44) from [<c023d614>] (pid_revalidate+0x124/0x178) r6:00000000 r5:cca25e80 r4:cbabe3c0 r3:00008124 [<c023d4f0>] (pid_revalidate+0x0/0x178) from [<c01db98c>] (lookup_fast+0x35c/0x43y4) r9:c6429efc r8:00000101 r7:c079d940 r6:c6429e90 r5:c6429ed8 r4:c83c4148 [<c01db630>] (lookup_fast+0x0/0x434) from [<c01deec8>] (do_last.isra.24+0x1c0/0x1108) [<c01ded08>] (do_last.isra.24+0x0/0x1108) from [<c01dff04>] (path_openat.isra.25+0xf4/0x648) [<c01dfe10>] (path_openat.isra.25+0x0/0x648) from [<c01e1458>] (do_filp_open+0x3c/0x88) [<c01e141c>] (do_filp_open+0x0/0x88) from [<c01ccb28>] (do_sys_open+0xf0/0x198) r7:00000001 r6:c0ea2180 r5:0000000b r4:00000000 [<c01cca38>] (do_sys_open+0x0/0x198) from [<c01ccc00>] (SyS_open+0x30/0x34) [<c01ccbd0>] (SyS_open+0x0/0x34) from [<c001db80>] (ret_fast_syscall+0x0/0x48) Read of size 4 by thread T834: Memory state around the buggy address: c4635380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc c4635400: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc c4635480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc c4635500: 00 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc c4635580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >c4635600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ c4635680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb c4635700: 00 00 00 00 04 fc fc fc fc fc fc fc fc fc fc fc c4635780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc c4635800: 00 00 00 00 00 00 04 fc fc fc fc fc fc fc fc fc c4635880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ================================================================== Signed-off-by:
Andrey Ryabinin <a.ryabinin@samsung.com> [bwh: Backported to 3.2: - smk_of_task() and similar functions return char * not struct smack_known * - The callers of task_security() are quite different, but most can be changed to use smk_of_task_struct() just as in the upstream version - Use open-coded RCU locking in the one place using smk_of_forked() instead of smk_of_task()] Signed-off-by:
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Dmitry Tunin authored
commit 033efa92 upstream. Add support of 13d3:3423 device. BugLink: https://bugs.launchpad.net/bugs/1411193 T: Bus=01 Lev=02 Prnt=03 Port=00 Cnt=01 Dev#= 5 Spd=12 MxCh= 0 D: Ver= 1.10 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=13d3 ProdID=3423 Rev= 0.01 C:* #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA A: FirstIf#= 0 IfCount= 2 Cls=e0(wlcon) Sub=01 Prot=01 I:* If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=81(I) Atr=03(Int.) MxPS= 16 Ivl=1ms E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms I:* If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 0 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 0 Ivl=1ms I: If#= 1 Alt= 1 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 9 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 9 Ivl=1ms I: If#= 1 Alt= 2 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 17 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 17 Ivl=1ms I: If#= 1 Alt= 3 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 25 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 25 Ivl=1ms I: If#= 1 Alt= 4 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 33 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 33 Ivl=1ms I: If#= 1 Alt= 5 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb E: Ad=83(I) Atr=01(Isoc) MxPS= 49 Ivl=1ms E: Ad=03(O) Atr=01(Isoc) MxPS= 49 Ivl=1ms Signed-off-by:
Dmitry Tunin <hanipouspilot@gmail.com> Signed-off-by:
Marcel Holtmann <marcel@holtmann.org> Signed-off-by:
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David Howells authored
commit 398a1e71 upstream. Add newly registered TPMs to the tail of the list, not the beginning, so that things that are specifying TPM_ANY_NUM don't find that the device they're using has inadvertently changed. Adding a second device would break IMA, for instance. Signed-off-by:
David Howells <dhowells@redhat.com> Reviewed-by:
Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Signed-off-by:
Peter Huewe <peterhuewe@gmx.de> [bwh: Backported to 3.2: adjust filename] Signed-off-by:
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Matthew Wilcox authored
commit 91117a20 upstream. The 'pfn' returned by axonram was completely bogus, and has been since 2008. Signed-off-by:
Matthew Wilcox <matthew.r.wilcox@intel.com> Reviewed-by:
Jan Kara <jack@suse.cz> Reviewed-by:
Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Signed-off-by:
Jens Axboe <axboe@fb.com> Signed-off-by:
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Sebastian Andrzej Siewior authored
commit 5efd2ea8 upstream. the following error pops up during "testusb -a -t 10" | musb-hdrc musb-hdrc.1.auto: dma_pool_free buffer-128, f134e000/be842000 (bad dma) hcd_buffer_create() creates a few buffers, the smallest has 32 bytes of size. ARCH_KMALLOC_MINALIGN is set to 64 bytes. This combo results in hcd_buffer_alloc() returning memory which is 32 bytes aligned and it might by identified by buffer_offset() as another buffer. This means the buffer which is on a 32 byte boundary will not get freed, instead it tries to free another buffer with the error message. This patch fixes the issue by creating the smallest DMA buffer with the size of ARCH_KMALLOC_MINALIGN (or 32 in case ARCH_KMALLOC_MINALIGN is smaller). This might be 32, 64 or even 128 bytes. The next three pools will have the size 128, 512 and 2048. In case the smallest pool is 128 bytes then we have only three pools instead of four (and zero the first entry in the array). The last pool size is always 2048 bytes which is the assumed PAGE_SIZE / 2 of 4096. I doubt it makes sense to continue using PAGE_SIZE / 2 where we would end up with 8KiB buffer in case we have 16KiB pages. Instead I think it makes sense to have a common size(s) and extend them if there is need to. There is a BUILD_BUG_ON() now in case someone has a minalign of more than 128 bytes. Signed-off-by:
Sebastian Andrzej Siewior <bigeasy@linutronix.de> Acked-by:
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David Daney authored
commit 1399ff86 upstream. We can place this in definitions that we expect the compiler to remove by dead code elimination. If this assertion fails, we get a nice error message at build time. The GCC function attribute error("message") was added in version 4.3, so we define a new macro __linktime_error(message) to expand to this for GCC-4.3 and later. This will give us an error diagnostic from the compiler on the line that fails. For other compilers __linktime_error(message) expands to nothing, and we have to be content with a link time error, but at least we will still get a build error. BUILD_BUG() expands to the undefined function __build_bug_failed() and will fail at link time if the compiler ever emits code for it. On GCC-4.3 and later, attribute((error())) is used so that the failure will be noted at compile time instead. Signed-off-by:
David Daney <david.daney@cavium.com> Acked-by:
David Rientjes <rientjes@google.com> Cc: DM <dm.n9107@gmail.com> Cc: Ralf Baechle <ralf@linux-mips.org> Acked-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org> [bwh: Backported to 3.2: adjust context] Signed-off-by:
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Ricardo Ribalda Delgado authored
commit 145b3fe5 upstream. Some implementations of modprobe fail to load the driver for a PCI device automatically because the "interface" part of the modalias from the kernel is lowercase, and the modalias from file2alias is uppercase. The "interface" is the low-order byte of the Class Code, defined in PCI r3.0, Appendix D. Most interface types defined in the spec do not use alpha characters, so they won't be affected. For example, 00h, 01h, 10h, 20h, etc. are unaffected. Print the "interface" byte of the Class Code in uppercase hex, as we already do for the Vendor ID, Device ID, Class, etc. Commit 89ec3dcf ("PCI: Generate uppercase hex for modalias interface class") fixed only half of the problem. Some udev implementations rely on the uevent file and not the modalias file. Fixes: d1ded203 ("PCI: add MODALIAS to hotplug event for pci devices") Fixes: 89ec3dcf ("PCI: Generate uppercase hex for modalias interface class") Signed-off-by:
Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> Signed-off-by:
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Jan Kara authored
commit 23b133bd upstream. Check length of extended attributes and allocation descriptors when loading inodes from disk. Otherwise corrupted filesystems could confuse the code and make the kernel oops. Reported-by:
Carl Henrik Lunde <chlunde@ping.uio.no> Signed-off-by:
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Jan Kara authored
commit 79144954 upstream. Store blocksize in a local variable in udf_fill_inode() since it is used a lot of times. Signed-off-by:
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Martin Vajnar authored
commit a52d2093 upstream. Since the removal of CONFIG_REGULATOR_DUMMY option, the touchscreen stopped working. This patch enables the "replacement" for REGULATOR_DUMMY and allows the touchscreen to work even though there is no regulator for "vcc". Signed-off-by:
Martin Vajnar <martin.vajnar@gmail.com> Signed-off-by:
Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by:
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Dmitry Eremin-Solenikov authored
commit baad2dc4 upstream. Add regulator_has_full_constraints() call to spitz board file to let regulator core know that we do not have any additional regulators left. This lets it substitute unprovided regulators with dummy ones. This fixes the following warnings that can be seen on spitz if regulators are enabled: ads7846 spi2.0: unable to get regulator: -517 spi spi2.0: Driver ads7846 requests probe deferral Signed-off-by:
Mark Brown <broonie@kernel.org> Signed-off-by:
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Dmitry Eremin-Solenikov authored
commit 9bc78f32 upstream. Add regulator_has_full_constraints() call to poodle board file to let regulator core know that we do not have any additional regulators left. This lets it substitute unprovided regulators with dummy ones. This fixes the following warnings that can be seen on poodle if regulators are enabled: ads7846 spi1.0: unable to get regulator: -517 spi spi1.0: Driver ads7846 requests probe deferral wm8731 0-001b: Failed to get supply 'AVDD': -517 wm8731 0-001b: Failed to request supplies: -517 wm8731 0-001b: ASoC: failed to probe component -517 Signed-off-by:
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Dmitry Eremin-Solenikov authored
commit 271e8017 upstream. Add regulator_has_full_constraints() call to corgi board file to let regulator core know that we do not have any additional regulators left. This lets it substitute unprovided regulators with dummy ones. This fixes the following warnings that can be seen on corgi if regulators are enabled: ads7846 spi1.0: unable to get regulator: -517 spi spi1.0: Driver ads7846 requests probe deferral wm8731 0-001b: Failed to get supply 'AVDD': -517 wm8731 0-001b: Failed to request supplies: -517 wm8731 0-001b: ASoC: failed to probe component -517 corgi-audio corgi-audio: ASoC: failed to instantiate card -517 Signed-off-by:
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- 06 Mar, 2015 13 commits
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Ben Hutchings authored
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Adam Lee authored
commit c561a575 upstream. BugLink: https://bugs.launchpad.net/bugs/1400215 ath3k devices fail to load firmwares on xHCI buses, but work well on EHCI, this might be a compatibility issue between xHCI and ath3k chips. As my testing result, those chips will work on xHCI buses again with this patch. This workaround is from Qualcomm, they also did some workarounds in Windows driver. Signed-off-by:
Adam Lee <adam.lee@canonical.com> Signed-off-by:
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Kumar Sundararajan authored
commit 1c265854 upstream. When the ipv6 fib changes during a table dump, the walk is restarted and the number of nodes dumped are skipped. But the existing code doesn't advance to the next node after a node is skipped. This can cause the dump to loop or produce lots of duplicates when the fib is modified during the dump. This change advances the walk to the next node if the current node is skipped after a restart. Signed-off-by:
Kumar Sundararajan <kumar@fb.com> Signed-off-by:
Chris Mason <clm@fb.com> Signed-off-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
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Eric Dumazet authored
commit fa809e2f upstream. Commit 2bec5a36 (ipv6: fib: fix crash when changing large fib while dumping it) introduced ability to restart the dump at tree root, but failed to skip correctly a count of already dumped entries. Code didn't match Patrick intent. We must skip exactly the number of already dumped entries. Note that like other /proc/net files or netlink producers, we could still dump some duplicates entries. Reported-by:
Debabrata Banerjee <dbavatar@gmail.com> Reported-by:
Josh Hunt <johunt@akamai.com> Signed-off-by:
Eric Dumazet <edumazet@google.com> Signed-off-by:
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John Stultz authored
commit 29183a70 upstream. Additional validation of adjtimex freq values to avoid potential multiplication overflows were added in commit 5e5aeb43 (time: adjtimex: Validate the ADJ_FREQUENCY values) Unfortunately the patch used LONG_MAX/MIN instead of LLONG_MAX/MIN, which was fine on 64-bit systems, but being much smaller on 32-bit systems caused false positives resulting in most direct frequency adjustments to fail w/ EINVAL. ntpd only does direct frequency adjustments at startup, so the issue was not as easily observed there, but other time sync applications like ptpd and chrony were more effected by the bug. See bugs: https://bugzilla.kernel.org/show_bug.cgi?id=92481 https://bugzilla.redhat.com/show_bug.cgi?id=1188074 This patch changes the checks to use LLONG_MAX for clarity, and additionally the checks are disabled on 32-bit systems since LLONG_MAX/PPM_SCALE is always larger then the 32-bit long freq value, so multiplication overflows aren't possible there. Reported-by:
Josh Boyer <jwboyer@fedoraproject.org> Reported-by:
George Joseph <george.joseph@fairview5.com> Tested-by:
John Stultz <john.stultz@linaro.org> Signed-off-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Sasha Levin <sasha.levin@oracle.com> Link: http://lkml.kernel.org/r/1423553436-29747-1-git-send-email-john.stultz@linaro.org [ Prettified the changelog and the comments a bit. ] Signed-off-by:
Ingo Molnar <mingo@kernel.org> Signed-off-by:
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Sasha Levin authored
commit 5e5aeb43 upstream. Verify that the frequency value from userspace is valid and makes sense. Unverified values can cause overflows later on. Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@kernel.org> Signed-off-by:
Sasha Levin <sasha.levin@oracle.com> [jstultz: Fix up bug for negative values and drop redunent cap check] Signed-off-by:
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Tim Chen authored
commit 80e3d87b upstream. This patch adds checks that prevens futile attempts to move rt tasks to a CPU with active tasks of equal or higher priority. This reduces run queue lock contention and improves the performance of a well known OLTP benchmark by 0.7%. Signed-off-by:
Tim Chen <tim.c.chen@linux.intel.com> Signed-off-by:
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Austin Lund authored
commit a8f29e89 upstream. Userspace expects to see a long space before the first pulse is sent on the lirc device. Currently, if a long time has passed and a new packet is started, the lirc codec just returns and doesn't send anything. This makes lircd ignore many perfectly valid signals unless they are sent in quick sucession. When a reset event is delivered, we cannot know anything about the duration of the space. But it should be safe to assume it has been a long time and we just set the duration to maximum. Signed-off-by:
Austin Lund <austin.lund@gmail.com> Signed-off-by:
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Ian Abbott authored
commit be8e8908 upstream. The hardware range code values and list of valid ranges for the AI subdevice is incorrect for several supported boards. The hardware range code values for all boards except PCI-DAS4020/12 is determined by calling `ai_range_bits_6xxx()` based on the maximum voltage of the range and whether it is bipolar or unipolar, however it only returns the correct hardware range code for the PCI-DAS60xx boards. For PCI-DAS6402/16 (and /12) it returns the wrong code for the unipolar ranges. For PCI-DAS64/Mx/16 it returns the wrong code for all the ranges and the comedi range table is incorrect. Change `ai_range_bits_6xxx()` to use a look-up table pointed to by new member `ai_range_codes` of `struct pcidas64_board` to map the comedi range table indices to the hardware range codes. Use a new comedi range table for the PCI-DAS64/Mx/16 boards (and the commented out variants). Signed-off-by:
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Fernando Soto authored
commit 84672369 upstream. Whenever a device is unregistered in vmbus_device_unregister (drivers/hv/vmbus_drv.c), the device name in the log message may contain garbage as the memory has already been freed by the time pr_info is called. Log example: [ 3149.170475] hv_vmbus: child device àõsèè0_5 unregistered By logging the message just before calling device_unregister, the correct device name is printed: [ 3145.034652] hv_vmbus: child device vmbus_0_5 unregistered Also changing register & unregister messages to debug to avoid unnecessarily cluttering the kernel log. Signed-off-by:
Fernando M Soto <fsoto@bluecatnetworks.com> Signed-off-by:
K. Y. Srinivasan <kys@microsoft.com> Signed-off-by:
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Ryusuke Konishi authored
commit 7ef3ff2f upstream. Nilfs2 eventually hangs in a stress test with fsstress program. This issue was caused by the following deadlock over I_SYNC flag between nilfs_segctor_thread() and writeback_sb_inodes(): nilfs_segctor_thread() nilfs_segctor_thread_construct() nilfs_segctor_unlock() nilfs_dispose_list() iput() iput_final() evict() inode_wait_for_writeback() * wait for I_SYNC flag writeback_sb_inodes() * set I_SYNC flag on inode->i_state __writeback_single_inode() do_writepages() nilfs_writepages() nilfs_construct_dsync_segment() nilfs_segctor_sync() * wait for completion of segment constructor inode_sync_complete() * clear I_SYNC flag after __writeback_single_inode() completed writeback_sb_inodes() calls do_writepages() for dirty inodes after setting I_SYNC flag on inode->i_state. do_writepages() in turn calls nilfs_writepages(), which can run segment constructor and wait for its completion. On the other hand, segment constructor calls iput(), which can call evict() and wait for the I_SYNC flag on inode_wait_for_writeback(). Since segment constructor doesn't know when I_SYNC will be set, it cannot know whether iput() will block or not unless inode->i_nlink has a non-zero count. We can prevent evict() from being called in iput() by implementing sop->drop_inode(), but it's not preferable to leave inodes with i_nlink == 0 for long periods because it even defers file truncation and inode deallocation. So, this instead resolves the deadlock by calling iput() asynchronously with a workqueue for inodes with i_nlink == 0. Signed-off-by:
Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Cc: Al Viro <viro@zeniv.linux.org.uk> Tested-by:
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Shiraz Hashim authored
commit 23aaed66 upstream. walk_page_range() silently skips vma having VM_PFNMAP set, which leads to undesirable behaviour at client end (who called walk_page_range). Userspace applications get the wrong data, so the effect is like just confusing users (if the applications just display the data) or sometimes killing the processes (if the applications do something with misunderstanding virtual addresses due to the wrong data.) For example for pagemap_read, when no callbacks are called against VM_PFNMAP vma, pagemap_read may prepare pagemap data for next virtual address range at wrong index. Eventually userspace may get wrong pagemap data for a task. Corresponding to a VM_PFNMAP marked vma region, kernel may report mappings from subsequent vma regions. User space in turn may account more pages (than really are) to the task. In my case I was using procmem, procrack (Android utility) which uses pagemap interface to account RSS pages of a task. Due to this bug it was giving a wrong picture for vmas (with VM_PFNMAP set). Fixes: a9ff785e ("mm/pagewalk.c: walk_page_range should avoid VM_PFNMAP areas") Signed-off-by:
Shiraz Hashim <shashim@codeaurora.org> Acked-by:
Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Signed-off-by:
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Saran Maruti Ramanara authored
commit cfbf654e upstream. When making use of RFC5061, section 4.2.4. for setting the primary IP address, we're passing a wrong parameter header to param_type2af(), resulting always in NULL being returned. At this point, param.p points to a sctp_addip_param struct, containing a sctp_paramhdr (type = 0xc004, length = var), and crr_id as a correlation id. Followed by that, as also presented in RFC5061 section 4.2.4., comes the actual sctp_addr_param, which also contains a sctp_paramhdr, but this time with the correct type SCTP_PARAM_IPV{4,6}_ADDRESS that param_type2af() can make use of. Since we already hold a pointer to addr_param from previous line, just reuse it for param_type2af(). Fixes: d6de3097 ("[SCTP]: Add the handling of "Set Primary IP Address" parameter to INIT") Signed-off-by:
Saran Maruti Ramanara <saran.neti@telus.com> Signed-off-by:
Daniel Borkmann <dborkman@redhat.com> Acked-by:
Vlad Yasevich <vyasevich@gmail.com> Acked-by:
Neil Horman <nhorman@tuxdriver.com> Signed-off-by:
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