Commit Graph

797983 Commits

Author SHA1 Message Date
Gustavo A. R. Silva 498b58944c ide: hpt366: mark expected switch fall-throughs
In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Notice that, in this particular case, I removed the "else: "
part from the comment. As we are now using Warning level 3:
-Wimplicit-fallthrough=3, this is what GCC is expecting to
find.

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-03-10 11:12:24 -07:00
Rob Herring adf040ddd0 ide: Use of_node_name_eq for node name comparisons
Convert string compares of DT node names to use of_node_name_eq helper
instead. This removes direct access to the node name pointer.

Cc: "David S. Miller" <davem@davemloft.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: linux-ide@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-05 20:57:56 -08:00
Linus Torvalds cf76c364a1 SCSI fixes on 20181206
Four obvious bug fixes.  The vmw_pscsi is so old that it's amazing
 no-one noticed before now.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
 -----BEGIN PGP SIGNATURE-----
 
 iJwEABMIAEQWIQTnYEDbdso9F2cI+arnQslM7pishQUCXAhvNCYcamFtZXMuYm90
 dG9tbGV5QGhhbnNlbnBhcnRuZXJzaGlwLmNvbQAKCRDnQslM7pishXQsAQCdzA+D
 pXU1LxAG3uf54nDE+uL2B47ZrPQOB2fKQNZ4FgEA7KfyRJzJC7efm6D/5GZr3BZ8
 6Ln3HmWxF2+1jxo84AA=
 =5a7p
 -----END PGP SIGNATURE-----

Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "Four obvious bug fixes. The vmw_pscsi is so old that it's amazing
  no-one noticed before now"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: storvsc: Fix a race in sub-channel creation that can cause panic
  scsi: vmw_pscsi: Rearrange code to avoid multiple calls to free_irq during unload
  scsi: libiscsi: Fix NULL pointer dereference in iscsi_eh_session_reset
  scsi: lpfc: fix block guard enablement on SLI3 adapters
2018-12-05 17:06:31 -08:00
Linus Torvalds 369af92ce4 ARC fixes/updates for 4.20-rc6
- Missing reads{x}()/writes{x}() getting in the way of some drivers [Jose Abreu]
 
  - Builds defaulting to ARCv2 ISA based configsa [Kevin Hilman]
 
  - Miscll fixes
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJcCGIUAAoJEGnX8d3iisJeMzoQAIhUEPPi0PMZ1HHBwcixOJQm
 6qPkNXkcSFMhWAguzgvbBUTI6hcmo/eoPidHtHYR7AeH4jVzuBkQXaMwV6DVfEOf
 TNXuAKUnWXN7rlNVCMG1UJyLE54XIETKec0apSnwBrlU/9aJ1ktPti5RWSLIv0Q+
 +0LvAHk7ooZbFjgOuDpCLbtO3ft/8pzgUBtBENxnL6QB3eFYd3kybL9MILsEuF/9
 an5QS6xo8udrljZ4q+/SEBbB11Sl2AS0wxzqT6ICikKjnOPm27xpVYD/eCO7n6V6
 yMWl42xgN7Oags6bsPqcHuhpDQepOYH82CqekRZR9q8m2jfzswwa2DHRpWthZbEK
 DDBZCnBLPgErNqVDS11oSUs3bqQ9nPwHkkjC7rVJcum4NB4pFk97+uWZ1IKDYU2P
 Q2r2cbuKp9TEPgRndj64v6d719k6gxkWkTL/6TtoFIA4B5BW9HjAJQY5guyd4vea
 eJM4LgraXhnMDIgfDFeJ8ASYONO5LcYMoAjkTHLq1Qae+iWOYaCaJ2xPbd5bS9D/
 /evNhTAcTeSMOHKUFwGFouufWvZiysLOz0mnhKvCgfFBlAzptXTpG72GvT0GJRou
 NV7FW1r/SLsKjaZP5q2SFb7vzUuM48l9aLjuiooD+7drHBuek+0VSJyBhnQSec/a
 Y3TGqzKxmmk76GxXVeLB
 =DXP7
 -----END PGP SIGNATURE-----

Merge tag 'arc-4.20-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc

Pull ARC fixes/updates from Vineet Gupta

 - Missing reads{x}()/writes{x}() getting in the way of some drivers [Jose Abreu]

 - Builds defaulting to ARCv2 ISA based configsa [Kevin Hilman]

 - Misc fixes

* tag 'arc-4.20-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  ARC: io.h: Implement reads{x}()/writes{x}()
  ARC: change defconfig defaults to ARCv2
  arc: [devboards] Add support of NFSv3 ACL
  ARC: mm: fix uninitialised signal code in do_page_fault
  ARC: [plat-hsdk] Enable DW APB GPIO support
  ARCv2: boot log unaligned access in use
  ARC: IOC: panic if kernel was started with previously enabled IOC
  ARC: remove redundant 'default n' from Kconfig
2018-12-05 15:51:41 -08:00
David Rientjes 2f0799a0ff mm, thp: restore node-local hugepage allocations
This is a full revert of ac5b2c1891 ("mm: thp: relax __GFP_THISNODE for
MADV_HUGEPAGE mappings") and a partial revert of 89c83fb539 ("mm, thp:
consolidate THP gfp handling into alloc_hugepage_direct_gfpmask").

By not setting __GFP_THISNODE, applications can allocate remote hugepages
when the local node is fragmented or low on memory when either the thp
defrag setting is "always" or the vma has been madvised with
MADV_HUGEPAGE.

Remote access to hugepages often has much higher latency than local pages
of the native page size.  On Haswell, ac5b2c1891 was shown to have a
13.9% access regression after this commit for binaries that remap their
text segment to be backed by transparent hugepages.

The intent of ac5b2c1891 is to address an issue where a local node is
low on memory or fragmented such that a hugepage cannot be allocated.  In
every scenario where this was described as a fix, there is abundant and
unfragmented remote memory available to allocate from, even with a greater
access latency.

If remote memory is also low or fragmented, not setting __GFP_THISNODE was
also measured on Haswell to have a 40% regression in allocation latency.

Restore __GFP_THISNODE for thp allocations.

Fixes: ac5b2c1891 ("mm: thp: relax __GFP_THISNODE for MADV_HUGEPAGE mappings")
Fixes: 89c83fb539 ("mm, thp: consolidate THP gfp handling into alloc_hugepage_direct_gfpmask")
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-12-05 15:45:54 -08:00
Linus Torvalds 4eaaa2b99e for-linus-20181205
-----BEGIN PGP SIGNATURE-----
 
 iQJEBAABCAAuFiEEwPw5LcreJtl1+l5K99NY+ylx4KYFAlwIM20QHGF4Ym9lQGtl
 cm5lbC5kawAKCRD301j7KXHgpphiD/wJQ+cGxPJCZWEv3T81bfzoct5nLUl41JYy
 dC4cJ3Fs4ECFiON4KdbXVRAUTgrY1pm8VcEA2RyqfjEAjcpCsxjpohwJKYhADzWb
 qdZk9e4mrqUE3ULJG86zRIEJZ7oZG1j7LqUUl4PRl2zygt99+uArNxFHFLPRtqKG
 n9aJzI+1IZJ+ADqvqkpIE6ikowAmg2VBne3j4jZwzlVPFV2KJtlRUgfrq4kAosAk
 U1jIIDwZh0SJTcft16KkNM/HHLpwpKwV1PgojSytde+1oWts0o8uBi/hRH4nye2j
 ZCmUjXZpJK9XL8UMqwbBwpq3knFpc9pvM9dTyrU5VqQZJadMDLxOFxoi23tHMNo1
 4U5MlygpyIC5Kstb4kBWvRAmXLz+nKxdsikWL5jl8Q7OPUD/D7Loezx4foO8IZjY
 +x0Hr4+uU9fb/E8VmXZ0rjjXaH5wbJ5W3Nn52ZctaFCqsXuz3LTemIOxr+riC3qh
 kDs9NlkAZ+4JT0qkhilHrzR1FcmTYBjBZToEjdQKpfeVFjUNRP1WyV3nSyAYwjKu
 nG6ct4IN3mjRrq7L6pgq7UgcPLXwQYqrgkc4eZF0Cujsm4miFCG1OcMyusxK5Ril
 93Wi6iXVpqQkj+BwulgkHnQJTPffV3g+x804DZ/AReraCA0QQV1jxr7eAWNaZoHk
 Z4JU3Gxfbg==
 =3dD7
 -----END PGP SIGNATURE-----

Merge tag 'for-linus-20181205' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:
 "A bit earlier in the week as usual, but there's a fix here that should
  go in sooner rather than later.

  Under a combination of circumstance, the direct issue path in blk-mq
  could corrupt data. This wasn't easy to hit, but the ones that are
  affected by it, seem to hit it pretty easily. Full explanation in the
  patch. None of the regular filesystem and storage testing has
  triggered it, even though it's been around since 4.19-rc1.

  Outside of that, whitelist trim tweak for certain Samsung devices for
  libata"

* tag 'for-linus-20181205' of git://git.kernel.dk/linux-block:
  blk-mq: fix corruption with direct issue
  libata: whitelist all SAMSUNG MZ7KM* solid-state disks
2018-12-05 13:28:01 -08:00
Linus Torvalds d089709045 for-4.20-rc5-tag
-----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEE8rQSAMVO+zA4DBdWxWXV+ddtWDsFAlwH0k8ACgkQxWXV+ddt
 WDtmVg/+Kgvk7laQI9bLEr1/30eG1JfBUMHcVE1F8+g99l28m1Yihjd21j9norVd
 YexBz53jgKou+zV+37CKWBYT1uDPq7CIoxctkdE2j9U0s+RmsqDrhech0dsBsfMR
 jo9VnHJFuJSxGMhjfGnFV+wMtAr4q5aQptNGBl+hR1MvMneroktFv+0WiLmp0Vhj
 +6Iq9WAClJYpgk//cI7nhKkscdzWwRyN3V9RUtdNeYklk1D7l1WprlaPzw22WA9u
 VjQVMICjEaJeIixIwT/D8lz05QgjKlqy1z6faYG5JuJxoYQikuNv/xe2dhZVm35A
 aNsBR0byf3zzuXKQZAlvXJ6/gYPvep+KI7epPyBOdycaqoZza7rQ+/MkSAgQ77Vk
 yBnQuhqiw9Srjh6LDWFkNclVln2wymRKd1SqpZmFPRZre/8L+DU+I8RRaeS2/WcE
 M2k+awRD0oVofbB+hxkFIoR+I1Ggkp2rxQlTT/41tGx0geWC3AGX+TlKSW6ZM5HD
 lRmRXIsVocfighKEnI3Zy7ecZuwCI4/4D6+PQtyhCJb3tDigZ/a4UEYdSVucG8CG
 SuQ5YMn+MyyKT0wH8xkGKDGT15YZ+u9Q/BmPHZRL6sSouFpiCQHA5miD1YA+t1d9
 qMjH6Ycz46Y3j2M0BDfDcm714zoD5/bgeSy5SPC3Zh5lQCGpeIk=
 =VW/F
 -----END PGP SIGNATURE-----

Merge tag 'for-4.20-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

Pull btrfs fix from David Sterba:
 "A patch in 4.19 introduced a sanity check that was too strict and a
  filesystem cannot be mounted.

  This happens for filesystems with more than 10 devices and has been
  reported by a few users so we need the fix to propagate to stable"

* tag 'for-4.20-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  btrfs: tree-checker: Don't check max block group size as current max chunk size limit is unreliable
2018-12-05 09:58:17 -08:00
Linus Torvalds 91dd51f6e7 Power management fix for 4.20-rc6
Revert a problematic recent commit that attempted to fix
 a system-wide suspend issue related to the freezer.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2
 
 iQIcBAABCAAGBQJcB7qkAAoJEILEb/54YlRxhYcQALPV+/QzRpRbgtD4IOP7daYp
 S1oZw6TTol79kWeL3Ts6a34lTjeG9QTDEahhXVPnNTgCcBuPpuNU4W/a7lSuPCZ3
 yjcEND4OH9Ui9x25vWEFhh9AtHGK79M15DLY38ytZapWBqwBc3NYm0+3uL0xmP2n
 gtk4SYtuDULnvRel6yei1tnKJ6ZLuKHEjlNrqerpmHhKmxu9VP8mG31daU9HPUBK
 FyJIAiQY3RwnVNC8mmYHMqgAYsCGIR/kMoW5wSb+LYeTppYq9hAZINcUFOV32jSb
 ebheoQ8sT1UhXtVD5Z0l7A3x4Mg9W9ngE3ZVS84f5R3XGrs73ExCOBpBF0GLjRjc
 857WqhzWFjNYoyS8PFmwCkzMLDxMeUO2UEu/8lCtOH1efNCX75IFBIPRJhY2IhYH
 ml6psr6DKAbnK1CgUV4L3jEaadCK9GqLs43jEuNveX0EmWAJtibLXNY3QtVV5a4C
 xXrsPy297j0e/xq2KDCtRov+dwENe7Rm5N0Qzqkk9V/T3XB89UnDmynjXXGSzNWK
 SkW/3EbUG/EbrF1Kv62vMUy4HFEUgzLjrL8ls2ooZu0mvQk2qeJgLnhnqI1XUp6+
 4VJ4B/48rHXaSLdctnoYlhRWMkn4DK5jmjun1wHf4HZ+ESiKXoS5R70Jy2cMorbv
 bmMfbuoCHkmq8RLs9Hdz
 =ef93
 -----END PGP SIGNATURE-----

Merge tag 'pm-4.20-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management fix from Rafael Wysocki:
 "Revert a problematic recent commit that attempted to fix a system-wide
  suspend issue related to the freezer"

* tag 'pm-4.20-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  Revert "exec: make de_thread() freezable"
2018-12-05 09:51:10 -08:00
Linus Torvalds 5e0dc1a7ce Bug fixes:
Replace release function: cros_ec_dev
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEdrbJNaO+IJqU8IdIUa+KL4f8d2EFAlwHo1gACgkQUa+KL4f8
 d2HhMg/9F1t9f7kDVbHHLIXTB7ecnS0FfMXuA18dieYwvxYX/wKIJQQkcaqBM1Ev
 IbJ4mAGAmtwOPTa8dMy4PZswZ1gsB0al64JX8QQF87RwOWIwVhRdLuorILsKXQNy
 LTP87hWeTGmJCCs7IVjAZIYtCY/r0PkA9QhuZpqp44CK8WFxp3JbdDGg1L9MrgPk
 IFsHdJkj3A09HJYay0HuIDMDK4eu8FHSLOWz2EjSWdePkmvIOApxAJMV+36/aSNA
 C1KugSzJmj7uwtq1xC5hgGxMZrXODqUZQdtPDLLSkaEE99V6g5hTTNVGjmX2ohw6
 6OMyULHIP9oXHVg1XDnSfajev1J6mhfir7OyNuuW52JrEmr1RpY1+Dn/Yor/gIno
 RnDR0CvnoJHrCbmJGxEFmlNWBc1y0s6tct3SuXxBLAHZOtF3OZ6OCb52/BeuQhH6
 U78/pJOnZ2BZs7IXh0HjEds5gzRZ3Um7+4lqCcBq/CHOxRk7R30CfH/4IDcjkTtT
 lIgKqoDFZatY8Am3ZcimzmNsyCnE8C/9+lsSMW2YupU10tkaFQHM0Szio6JYuHcI
 uayio9NBXTPxEIogezsSrd1umSH+MYaEpxcVjZ74BsVw8o0ZP8p+kEb+SXP9ahAx
 r00PHpgTPYsXG4ZjeCoFbzuE1tdDy/66gVE57S9P6ChqvGIt0Uo=
 =Brl7
 -----END PGP SIGNATURE-----

Merge tag 'mfd-fixes-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

Pull mfd bugfix from Lee Jones:
 "Replace release function in cros_ec_dev"

* tag 'mfd-fixes-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd:
  Revert "mfd: cros_ec: Use devm_kzalloc for private data"
2018-12-05 09:45:34 -08:00
Enric Balletbo i Serra 48a2ca0ee3 Revert "mfd: cros_ec: Use devm_kzalloc for private data"
This reverts commit 3aa2177e47.

That commit triggered a new WARN when unloading the module (see at the
end of the commit message). When a class_dev is embedded in a structure
then that class_dev is the thing that controls the lifetime of that
structure, for that reason device managed allocations can't be used here.
See Documentation/kobject.txt.

Revert the above patch, so the struct is allocated using kzalloc and we
have a release function for it that frees the allocated memory, otherwise
it is broken.

 ------------[ cut here ]------------
 Device 'cros_ec' does not have a release() function, it is broken and must be fixed.
 WARNING: CPU: 3 PID: 3675 at drivers/base/core.c:895 device_release+0x80/0x90
 Modules linked in: btusb btrtl btintel btbcm bluetooth ...
 CPU: 3 PID: 3675 Comm: rmmod Not tainted 4.20.0-rc4 #76
 Hardware name: Google Kevin (DT)
 pstate: 40000005 (nZcv daif -PAN -UAO)
 pc : device_release+0x80/0x90
 lr : device_release+0x80/0x90
 sp : ffff00000c47bc70
 x29: ffff00000c47bc70 x28: ffff8000e86b0d40
 x27: 0000000000000000 x26: 0000000000000000
 x25: 0000000056000000 x24: 0000000000000015
 x23: ffff8000f0bbf860 x22: ffff000000d320a0
 x21: ffff8000ee93e100 x20: ffff8000ed931428
 x19: ffff8000ed931418 x18: 0000000000000020
 x17: 0000000000000000 x16: 0000000000000000
 x15: 0000000000000400 x14: 0000000000000143
 x13: 0000000000000000 x12: 0000000000000400
 x11: 0000000000000157 x10: 0000000000000960
 x9 : ffff00000c47b9b0 x8 : ffff8000e86b1700
 x7 : 0000000000000000 x6 : ffff8000f7d520b8
 x5 : ffff8000f7d520b8 x4 : 0000000000000000
 x3 : ffff8000f7d58e68 x2 : ffff8000e86b0d40
 x1 : 37d859939c964800 x0 : 0000000000000000
 Call trace:
  device_release+0x80/0x90
  kobject_put+0x74/0xe8
  device_unregister+0x20/0x30
  ec_device_remove+0x34/0x48 [cros_ec_dev]
  platform_drv_remove+0x28/0x48
  device_release_driver_internal+0x1a8/0x240
  driver_detach+0x40/0x80
  bus_remove_driver+0x54/0xa8
  driver_unregister+0x2c/0x58
  platform_driver_unregister+0x10/0x18
  cros_ec_dev_exit+0x1c/0x2d8 [cros_ec_dev]
  __arm64_sys_delete_module+0x16c/0x1f8
  el0_svc_common+0x84/0xd8
  el0_svc_handler+0x2c/0x80
  el0_svc+0x8/0xc
 ---[ end trace a57c4625f3c60ae8 ]---

Cc: stable@vger.kernel.org
Fixes: 3aa2177e47 ("mfd: cros_ec: Use devm_kzalloc for private data")
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Reviewed-by: Dmitry Torokhov <dtor@chromium.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2018-12-05 09:59:38 +00:00
Jens Axboe ffe81d4532 blk-mq: fix corruption with direct issue
If we attempt a direct issue to a SCSI device, and it returns BUSY, then
we queue the request up normally. However, the SCSI layer may have
already setup SG tables etc for this particular command. If we later
merge with this request, then the old tables are no longer valid. Once
we issue the IO, we only read/write the original part of the request,
not the new state of it.

This causes data corruption, and is most often noticed with the file
system complaining about the just read data being invalid:

[  235.934465] EXT4-fs error (device sda1): ext4_iget:4831: inode #7142: comm dpkg-query: bad extra_isize 24937 (inode size 256)

because most of it is garbage...

This doesn't happen from the normal issue path, as we will simply defer
the request to the hardware queue dispatch list if we fail. Once it's on
the dispatch list, we never merge with it.

Fix this from the direct issue path by flagging the request as
REQ_NOMERGE so we don't change the size of it before issue.

See also:
  https://bugzilla.kernel.org/show_bug.cgi?id=201685

Tested-by: Guenter Roeck <linux@roeck-us.net>
Fixes: 6ce3dd6eec ("blk-mq: issue directly if hw queue isn't busy in case of 'none'")
Cc: stable@vger.kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-12-04 20:06:48 -07:00
Linus Torvalds a517af52cb Merge branch 'parisc-4.20-4' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc fix from Helge Deller:
 "On parisc, use -ffunction-sections compiler option when building
  32-bit kernel modules to avoid sysfs-warnings when loading such
  modules.

  This got broken with kernel v4.18"

* 'parisc-4.20-4' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Enable -ffunction-sections for modules on 32-bit kernel
2018-12-04 09:10:39 -08:00
Linus Torvalds adac0753c2 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input updates from Dmitry Torokhov:
 "Mostly new IDs for Elan/Synaptics touchpads, plus a few small fixups"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: omap-keypad - fix keyboard debounce configuration
  Input: xpad - quirk all PDP Xbox One gamepads
  Input: synaptics - enable SMBus for HP 15-ay000
  Input: synaptics - add PNP ID for ThinkPad P50 to SMBus
  Input: elan_i2c - add ACPI ID for Lenovo IdeaPad 330-15ARR
  Input: elan_i2c - add support for ELAN0621 touchpad
  Input: hyper-v - fix wakeup from suspend-to-idle
  Input: atkbd - clean up indentation issue
  Input: st1232 - convert to SPDX identifiers
  Input: migor_ts - convert to SPDX identifiers
  Input: dt-bindings - fix a typo in file input-reset.txt
  Input: cros_ec_keyb - fix button/switch capability reports
  Input: elan_i2c - add ELAN0620 to the ACPI table
  Input: matrix_keypad - check for errors from of_get_named_gpio()
2018-12-04 08:47:04 -08:00
Rafael J. Wysocki a72173ecfc Revert "exec: make de_thread() freezable"
Revert commit c22397888f "exec: make de_thread() freezable" as
requested by Ingo Molnar:

"So there's a new regression in v4.20-rc4, my desktop produces this
lockdep splat:

[ 1772.588771] WARNING: pkexec/4633 still has locks held!
[ 1772.588773] 4.20.0-rc4-custom-00213-g93a49841322b #1 Not tainted
[ 1772.588775] ------------------------------------
[ 1772.588776] 1 lock held by pkexec/4633:
[ 1772.588778]  #0: 00000000ed85fbf8 (&sig->cred_guard_mutex){+.+.}, at: prepare_bprm_creds+0x2a/0x70
[ 1772.588786] stack backtrace:
[ 1772.588789] CPU: 7 PID: 4633 Comm: pkexec Not tainted 4.20.0-rc4-custom-00213-g93a49841322b #1
[ 1772.588792] Call Trace:
[ 1772.588800]  dump_stack+0x85/0xcb
[ 1772.588803]  flush_old_exec+0x116/0x890
[ 1772.588807]  ? load_elf_phdrs+0x72/0xb0
[ 1772.588809]  load_elf_binary+0x291/0x1620
[ 1772.588815]  ? sched_clock+0x5/0x10
[ 1772.588817]  ? search_binary_handler+0x6d/0x240
[ 1772.588820]  search_binary_handler+0x80/0x240
[ 1772.588823]  load_script+0x201/0x220
[ 1772.588825]  search_binary_handler+0x80/0x240
[ 1772.588828]  __do_execve_file.isra.32+0x7d2/0xa60
[ 1772.588832]  ? strncpy_from_user+0x40/0x180
[ 1772.588835]  __x64_sys_execve+0x34/0x40
[ 1772.588838]  do_syscall_64+0x60/0x1c0

The warning gets triggered by an ancient lockdep check in the freezer:

(gdb) list *0xffffffff812ece06
0xffffffff812ece06 is in flush_old_exec (./include/linux/freezer.h:57).
52	 * DO NOT ADD ANY NEW CALLERS OF THIS FUNCTION
53	 * If try_to_freeze causes a lockdep warning it means the caller may deadlock
54	 */
55	static inline bool try_to_freeze_unsafe(void)
56	{
57		might_sleep();
58		if (likely(!freezing(current)))
59			return false;
60		return __refrigerator(false);
61	}

I reviewed the ->cred_guard_mutex code, and the mutex is held across all
of exec() - and we always did this.

But there's this recent -rc4 commit:

> Chanho Min (1):
>       exec: make de_thread() freezable

  c22397888f1e: exec: make de_thread() freezable

I believe this commit is bogus, you cannot call try_to_freeze() from
de_thread(), because it's holding the ->cred_guard_mutex."

Reported-by: Ingo Molnar <mingo@kernel.org>
Tested-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-12-04 16:04:20 +01:00
Qu Wenruo 10950929e9 btrfs: tree-checker: Don't check max block group size as current max chunk size limit is unreliable
[BUG]
A completely valid btrfs will refuse to mount, with error message like:
  BTRFS critical (device sdb2): corrupt leaf: root=2 block=239681536 slot=172 \
    bg_start=12018974720 bg_len=10888413184, invalid block group size, \
    have 10888413184 expect (0, 10737418240]

This has been reported several times as the 4.19 kernel is now being
used. The filesystem refuses to mount, but is otherwise ok and booting
4.18 is a workaround.

Btrfs check returns no error, and all kernels used on this fs is later
than 2011, which should all have the 10G size limit commit.

[CAUSE]
For a 12 devices btrfs, we could allocate a chunk larger than 10G due to
stripe stripe bump up.

__btrfs_alloc_chunk()
|- max_stripe_size = 1G
|- max_chunk_size = 10G
|- data_stripe = 11
|- if (1G * 11 > 10G) {
       stripe_size = 976128930;
       stripe_size = round_up(976128930, SZ_16M) = 989855744

However the final stripe_size (989855744) * 11 = 10888413184, which is
still larger than 10G.

[FIX]
For the comprehensive check, we need to do the full check at chunk read
time, and rely on bg <-> chunk mapping to do the check.

We could just skip the length check for now.

Fixes: fce466eab7 ("btrfs: tree-checker: Verify block_group_item")
Cc: stable@vger.kernel.org # v4.19+
Reported-by: Wang Yugui <wangyugui@e16-tech.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2018-12-04 15:05:30 +01:00
Juha-Matti Tilli fd6f32f786 libata: whitelist all SAMSUNG MZ7KM* solid-state disks
These devices support read zero after trim (RZAT), as they advertise to
the OS. However, the OS doesn't believe the SSDs unless they are
explicitly whitelisted.

Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Juha-Matti Tilli <juha-matti.tilli@iki.fi>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-12-03 12:54:39 -07:00
Tony Lindgren 6c3516fed7 Input: omap-keypad - fix keyboard debounce configuration
I noticed that the Android v3.0.8 kernel on droid4 is using different
keypad values from the mainline kernel and does not have issues with
keys occasionally being stuck until pressed again. Turns out there was
an earlier patch posted to fix this as "Input: omap-keypad: errata i689:
Correct debounce time", but it was never reposted to fix use macros
for timing calculations.

This updated version is using macros, and also fixes the use of the
input clock rate to use 32768KiHz instead of 32000KiHz. And we want to
use the known good Android kernel values of 3 and 6 instead of 2 and 6
in the earlier patch.

Reported-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2018-12-03 11:37:55 -08:00
Cameron Gutman a6754fae1e Input: xpad - quirk all PDP Xbox One gamepads
Since we continue to find tons of new variants [0,1,2,3,4,5,6] that
need the PDP quirk, let's just quirk all devices from PDP.

[0]: https://github.com/paroj/xpad/pull/104
[1]: https://github.com/paroj/xpad/pull/105
[2]: https://github.com/paroj/xpad/pull/108
[3]: https://github.com/paroj/xpad/pull/109
[4]: https://github.com/paroj/xpad/pull/112
[5]: https://github.com/paroj/xpad/pull/115
[6]: https://github.com/paroj/xpad/pull/116

Fixes: e5c9c6a885 ("Input: xpad - add support for PDP Xbox One controllers")
Cc: stable@vger.kernel.org
Signed-off-by: Cameron Gutman <aicommander@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2018-12-03 11:37:54 -08:00
Teika Kazura 5a6dab15f7 Input: synaptics - enable SMBus for HP 15-ay000
SMBus works fine for the touchpad with id SYN3221, used in the HP 15-ay000
series,

This device has been reported in these messages in the "linux-input"
mailing list:
* https://marc.info/?l=linux-input&m=152016683003369&w=2
* https://www.spinics.net/lists/linux-input/msg52525.html

Reported-by: Nitesh Debnath <niteshkd1999@gmail.com>
Reported-by: Teika Kazura <teika@gmx.com>
Signed-off-by: Teika Kazura <teika@gmx.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2018-12-03 11:37:17 -08:00
Lyude Paul 9df39bedbf Input: synaptics - add PNP ID for ThinkPad P50 to SMBus
Noticed the other day the trackpoint felt different on my P50, then
realized it was because rmi4 wasn't loading for this machine
automatically. Suspend/resume, hibernate, and everything else seem to
work perfectly fine on here.

Signed-off-by: Lyude Paul <lyude@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2018-12-03 11:37:17 -08:00
Noah Westervelt ad33429cd0 Input: elan_i2c - add ACPI ID for Lenovo IdeaPad 330-15ARR
Add ELAN061E to the ACPI table to support Elan touchpad found in Lenovo
IdeaPad 330-15ARR.

Signed-off-by: Noah Westervelt <nwestervelt@outlook.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2018-12-03 11:37:16 -08:00
Adam Wong bf87ade0dd Input: elan_i2c - add support for ELAN0621 touchpad
Added the ability to detect the ELAN0621 touchpad found in some Lenovo
laptops.

Signed-off-by: Adam Wong <adam@adamwong.me>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2018-12-03 11:37:15 -08:00
Linus Torvalds 0072a0c14d media fixes for v4.20-rc4
-----BEGIN PGP SIGNATURE-----
 
 iQIcBAABAgAGBQJcBW/HAAoJEAhfPr2O5OEVr1YP/Rggag8uQS365rYzRlau1tQY
 VeCuYsmW4IZTRLk7IgLctRDJ6XShwnwpWJCfo8Uvf0LHk1q1dxPyJMZ/ycNujG/B
 AxAZlURF4Kqx1iMaG8thwJt5LqT2yzpas34mmSvX7Xxa9FnV7tb3FyadclVW3tjL
 Dg8P/6ryY2I0UtzzFGtepXoWz0G76xNEjPqpyVMzjQzzpdmtX1GX/ObtmnjkNQmS
 qFRTJ+TFL4i61vdmz64ReVHJ5yMXo32wOxbYtSB7xiU8ZZvRrrD//Z5/15QUIz3p
 rQO2zUsnUaqMFx3qdnMRYY//BYo/WVTATIxOeAEjOyinc3Op03IRV4FYGTlb9mqG
 RLnhl6PAxN2En9KQBBSunaf9/iJtjSH1EWyAfrAM1gUsYQmnSmFf0P+EogNMCbbR
 hZGCzp9nr35OZ02g5XroMZ4DlqqGDqY6uvbeH7fm7eCDQ67O2yPynPzSWYBbymP4
 q/vIrxIBAQRq/3PGO4kgwUn+d6T8B3O1GnufPLJvHAoXHfDZ32ahlv6JcKN0qf0q
 IYyCXW0m2rTmkZRkmmkFmCUx0T8U4jen9pFEd6iRVAp3hrU9mgdv90R7Cjn7w/KC
 A0S1EcCUOiz7mt20U0fypWt0oyj6se8ltLy0wyNd/TePuFJfJ4n7pnC3rFojHCyN
 ejprmuE8ft9DC6W6hIrP
 =44JZ
 -----END PGP SIGNATURE-----

Merge tag 'media/v4.20-4' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

Pull media fixes from Mauro Carvalho Chehab:

 - Revert a dt-bindings patch whose driver didn't make for 4.20

 - fix a kernel oops at vicodec driver

 - fix a frame overflow at gspca with was causing regressions on some
   cameras, making them to not work

 - use the proper type for wait_queue head

 - make media request API compatible with 32-bit userspace on 64-bit
   kernel

 - fix a regression on Kernel 4.19 at dvb-pll

 - don't use SPDX headers yet for GFDL

* tag 'media/v4.20-4' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
  media: mediactl docs: Fix licensing message
  media: dvb-pll: don't re-validate tuner frequencies
  media: dvb-pll: fix tuner frequency ranges
  media: Revert "media: dt-bindings: Document the Rockchip VPU bindings"
  media: gspca: fix frame overflow error
  media: vicodec: fix memchr() kernel oops
  media: cedrus: add action item to the TODO
  media: media-request: Add compat ioctl
  media: Use wait_queue_head_t for media_request
2018-12-03 11:29:20 -08:00
Linus Torvalds f3f950dba3 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide
Pull IDE fixes from David Miller:
 "A missing of_node_put() and a small cleanup"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide:
  ide: Change to use DEFINE_SHOW_ATTRIBUTE macro
  ide: pmac: add of_node_put()
2018-12-03 09:43:24 -08:00
Linus Torvalds 9099ff769f Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc
Pull sparc fixes from David Miller:

 1) Some implicit switch fallthrough fixes from Stephen Rothwell.

 2) Missing of_node_put() in various sparc drivers from Yangtao Li.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
  drivers/tty: add missing of_node_put()
  drivers/sbus/char: add of_node_put()
  sbus: char: add of_node_put()
  sparc32: supress another implicit-fallthrough warning
  sparc32: suppress an implicit-fallthrough warning
  sparc: suppress the implicit-fallthrough warning
  arch/sparc: Use kzalloc_node
2018-12-03 09:35:27 -08:00
Yangtao Li 94d0fb159d ide: Change to use DEFINE_SHOW_ATTRIBUTE macro
Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code.

Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-02 22:09:09 -08:00
Yangtao Li a51921c0db ide: pmac: add of_node_put()
use of_node_put() to release the refcount.

Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-02 22:09:09 -08:00
Yangtao Li dac097c454 drivers/tty: add missing of_node_put()
of_find_node_by_path() acquires a reference to the node
returned by it and that reference needs to be dropped by its caller.
This place is not doing this, so fix it.

Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-02 20:55:23 -08:00
Yangtao Li 6bd520ab7c drivers/sbus/char: add of_node_put()
use of_node_put() to release the refcount.

Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-02 20:55:23 -08:00
Yangtao Li 87d81a23e2 sbus: char: add of_node_put()
use of_node_put() to release the refcount.

Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-02 20:55:22 -08:00
Linus Torvalds 2595646791 Linux 4.20-rc5 2018-12-02 15:07:55 -08:00
Linus Torvalds 6a51272609 ARM: SoC fixes
Volume is a little higher than usual due to a set of gpio fixes for
 Davinci platforms that's been around a while, still seemed appropriate
 to not hold off until next merge window.
 
 Besides that it's the usual mix of minor fixes, mostly corrections of
 small stuff in device trees.
 
 Major stability-related one is the removal of a regulator from DT on
 Rock960, since DVFS caused undervoltage. I expect it'll be restored once
 they figure out the underlying issue.
 -----BEGIN PGP SIGNATURE-----
 
 iQJDBAABCAAtFiEElf+HevZ4QCAJmMQ+jBrnPN6EHHcFAlwEMLEPHG9sb2ZAbGl4
 b20ubmV0AAoJEIwa5zzehBx3WewP/2shRXHQ8mSwMbqLApBUgPASpGtyJsLgP4vX
 ROMHdfQr2nhZPu9vy973aVAztkG3FCsWNhKqNVWTfvNf9eNYRh62D8/gqNYavQJH
 Gtq/TpiJWWDWoXzxHpOE5vSunNDUGWRrbigmgcONogNs42iX0ngLAy7GWzWHB7oc
 O3HAYxNevsBTJkkKpKGnDqDM1P4WaEG5OPdjMUN25UD7IBshzuVq4eG3LuqLLZ01
 NzGV/RErCnnLP8VSJlu+LQkLBeO5WpcvqZMeC6lNGBEBQAscTYRTucmM9tflJgCK
 B3+GczLFdJXKwluVV055MfrBxUweZ+Tm2gk7Ojtou/ozhFOdWICVT6KSwTHiOUIB
 ZDP/f56QfJCxxc/NFX5fJHSaYhXl+tj1HVxwG/dK/l3blMOX5I7cZkBKnjI9sDVl
 H3on9r5S3j1x1T534zf/n0OUwztIBmPiEZTPeoz6L1HuqpusmWJZB3knW6RnA4Lv
 3JQPowK2k97/3Xp4xnzl5rQreBomXv1hsszXmPKX0pIFXF1C+BQ0LwNd9cC/Hnq2
 dz02JkzoAoEg1L5DYhG63vg/3beg//3Z7uGNMu4LMcaNlLxl5AqMM7O18qJCfMth
 nFZRx+ZkZ7h8EJqXnMxnXgwHUzWN6Iq2AjKFfmVWRQcDZk+Ys9BlRV5O9m0N0JHb
 KfdtL0SC
 =m41T
 -----END PGP SIGNATURE-----

Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "Volume is a little higher than usual due to a set of gpio fixes for
  Davinci platforms that's been around a while, still seemed appropriate
  to not hold off until next merge window.

  Besides that it's the usual mix of minor fixes, mostly corrections of
  small stuff in device trees.

  Major stability-related one is the removal of a regulator from DT on
  Rock960, since DVFS caused undervoltage. I expect it'll be restored
  once they figure out the underlying issue"

* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (28 commits)
  MAINTAINERS: Remove unused Qualcomm SoC mailing list
  ARM: davinci: dm644x: set the GPIO base to 0
  ARM: davinci: da830: set the GPIO base to 0
  ARM: davinci: dm355: set the GPIO base to 0
  ARM: davinci: dm646x: set the GPIO base to 0
  ARM: davinci: dm365: set the GPIO base to 0
  ARM: davinci: da850: set the GPIO base to 0
  gpio: davinci: restore a way to manually specify the GPIO base
  ARM: davinci: dm644x: define gpio interrupts as separate resources
  ARM: davinci: dm355: define gpio interrupts as separate resources
  ARM: davinci: dm646x: define gpio interrupts as separate resources
  ARM: davinci: dm365: define gpio interrupts as separate resources
  ARM: davinci: da8xx: define gpio interrupts as separate resources
  ARM: dts: at91: sama5d2: use the divided clock for SMC
  ARM: dts: imx51-zii-rdu1: Remove EEPROM node
  ARM: dts: rockchip: Remove @0 from the veyron memory node
  arm64: dts: rockchip: Fix PCIe reset polarity for rk3399-puma-haikou.
  arm64: dts: qcom: msm8998: Reserve gpio ranges on MTP
  arm64: dts: sdm845-mtp: Reserve reserved gpios
  arm64: dts: ti: k3-am654: Fix wakeup_uart reg address
  ...
2018-12-02 12:19:44 -08:00
Linus Torvalds 292974c5ac xen: fixes for 4.20-rc5
-----BEGIN PGP SIGNATURE-----
 
 iHUEABYIAB0WIQRTLbB6QfY48x44uB6AXGG7T9hjvgUCXAOQWAAKCRCAXGG7T9hj
 vqqLAQCC+eJNcIEGXm2B5SpadB4v/TKPk+GYRK/zUP0FVPHo3AEAoSTZlmCUUSno
 7me8n0sTrd4+ZKMGHvFgAYbpoO90XQM=
 =BxP8
 -----END PGP SIGNATURE-----

Merge tag 'for-linus-4.20a-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen fixes from Juergen Gross:

 - A revert of a previous commit as it is no longer necessary and has
   shown to cause problems in some memory hotplug cases.

 - Some small fixes and a minor cleanup.

 - A patch for adding better diagnostic data in a very rare failure
   case.

* tag 'for-linus-4.20a-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  pvcalls-front: fixes incorrect error handling
  Revert "xen/balloon: Mark unallocated host memory as UNUSABLE"
  xen: xlate_mmu: add missing header to fix 'W=1' warning
  xen/x86: add diagnostic printout to xen_mc_flush() in case of error
  x86/xen: cleanup includes in arch/x86/xen/spinlock.c
2018-12-02 12:15:55 -08:00
Linus Torvalds a234c7371f dmaengine-4.20-rc5
dmaengine fixes for v4.20-rc5
 
 This contains two fixes to at_hdmac which fixes long standing bus
 reported recently on serial transfers causing memory leak. These
 fixes were done by Richard Genoud.
 -----BEGIN PGP SIGNATURE-----
 
 iQIcBAABAgAGBQJcA5DaAAoJEHwUBw8lI4NHFtAP/AldipVXEyg6VbZGpLoIKcaP
 SdM8vMgeLJBLMdIpP6vxC/aZgHw2J9RFlKf+AljW2VAs3/fH8Nsfki7zNyA+yMzd
 lzyaGuzTIBC7JCz2ZY9OCPnLPeGO6YAFoZI8y2vQOYRsR6BpJd9iTQ0H0ncSFTxJ
 9S5cJ8nq4l9rRz26lKASfdPCPLtOWv03VTAM7NZNdb9Ai27SxRlBYGRQIamwoYsf
 xXmwRH+Kz8n1ajNmXtf75wX1X3yfR+/t+nJ7zOpcSb1+OQV2E+ZUiY+9u5BCr/Jp
 CHmzfy6G6f6YExc02FWvnfzsNODTyMnBce9CLJ5AsedZ7LsmcC8V8Y+K70w86w2A
 Tr1Jqt4Gj1C1vQ4ABkHkXf1ZIjMP0wCfoYN9PMBy7nfahfNXIW0JnqlHzRWkJRB1
 8amB4d63e4tdztLZxEVkNIm5ylIzbPSN3kSLYw7Pna4R8tk2wf4CtiZTn7CKlvjz
 m1hCkN80idh/Oaftpt9zJgGdkqaZ9hoUDL2Hq8ZzhGqWRD/u4ZLQctqH1Z1DxZjO
 3f6i2fsdjDpACfy5pd1Kj65zS/PdzWHx2Vws8H5BwFpBRgKdeK9yiYGPDFHZtVct
 hg6wmmb/sMaFgL9OAkmxvKInyFPMd0EQ+fhoVfHU8ON2rZXnsendy3e/MmD9xMer
 sosLDk9RuURxH9UBTFJ8
 =6BFf
 -----END PGP SIGNATURE-----

Merge tag 'dmaengine-fix-4.20-rc5' of git://git.infradead.org/users/vkoul/slave-dma

Pull dmaengine fixes from Vinod Koul:
 "This contains two fixes to at_hdmac which fixes long standing bus
  reported recently on serial transfers causing memory leak. These fixes
  were done by Richard Genoud"

* tag 'dmaengine-fix-4.20-rc5' of git://git.infradead.org/users/vkoul/slave-dma:
  dmaengine: at_hdmac: fix module unloading
  dmaengine: at_hdmac: fix memory leak in at_dma_xlate()
2018-12-02 12:07:27 -08:00
Helge Deller 1e8249b8a4 parisc: Enable -ffunction-sections for modules on 32-bit kernel
Frank Schreiner reported, that since kernel 4.18 he faces sysfs-warnings
when loading modules on a 32-bit kernel. Here is one such example:

 sysfs: cannot create duplicate filename '/module/nfs/sections/.text'
 CPU: 0 PID: 98 Comm: modprobe Not tainted 4.18.0-2-parisc #1 Debian 4.18.10-2
 Backtrace:
  [<1017ce2c>] show_stack+0x3c/0x50
  [<107a7210>] dump_stack+0x28/0x38
  [<103f900c>] sysfs_warn_dup+0x88/0xac
  [<103f8b1c>] sysfs_add_file_mode_ns+0x164/0x1d0
  [<103f9e70>] internal_create_group+0x11c/0x304
  [<103fa0a0>] sysfs_create_group+0x48/0x60
  [<1022abe8>] load_module.constprop.35+0x1f9c/0x23b8
  [<1022b278>] sys_finit_module+0xd0/0x11c
  [<101831dc>] syscall_exit+0x0/0x14

This warning gets triggered by the fact, that due to commit 24b6c22504
("parisc: Build kernel without -ffunction-sections") we now get multiple .text
sections in the kernel modules for which sysfs_create_group() can't create
multiple virtual files.

This patch works around the problem by re-enabling the -ffunction-sections
compiler option for modules, while keeping it disabled for the non-module
kernel code.

Reported-by: Frank Scheiner <frank.scheiner@web.de>
Fixes: 24b6c22504 ("parisc: Build kernel without -ffunction-sections")
Cc: <stable@vger.kernel.org> # v4.18+
Signed-off-by: Helge Deller <deller@gmx.de>
2018-12-02 20:34:07 +01:00
Linus Torvalds 4b78317679 Merge branch 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull STIBP fallout fixes from Thomas Gleixner:
 "The performance destruction department finally got it's act together
  and came up with a cure for the STIPB regression:

   - Provide a command line option to control the spectre v2 user space
     mitigations. Default is either seccomp or prctl (if seccomp is
     disabled in Kconfig). prctl allows mitigation opt-in, seccomp
     enables the migitation for sandboxed processes.

   - Rework the code to handle the conditional STIBP/IBPB control and
     remove the now unused ptrace_may_access_sched() optimization
     attempt

   - Disable STIBP automatically when SMT is disabled

   - Optimize the switch_to() logic to avoid MSR writes and invocations
     of __switch_to_xtra().

   - Make the asynchronous speculation TIF updates synchronous to
     prevent stale mitigation state.

  As a general cleanup this also makes retpoline directly depend on
  compiler support and removes the 'minimal retpoline' option which just
  pretended to provide some form of security while providing none"

* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (31 commits)
  x86/speculation: Provide IBPB always command line options
  x86/speculation: Add seccomp Spectre v2 user space protection mode
  x86/speculation: Enable prctl mode for spectre_v2_user
  x86/speculation: Add prctl() control for indirect branch speculation
  x86/speculation: Prepare arch_smt_update() for PRCTL mode
  x86/speculation: Prevent stale SPEC_CTRL msr content
  x86/speculation: Split out TIF update
  ptrace: Remove unused ptrace_may_access_sched() and MODE_IBRS
  x86/speculation: Prepare for conditional IBPB in switch_mm()
  x86/speculation: Avoid __switch_to_xtra() calls
  x86/process: Consolidate and simplify switch_to_xtra() code
  x86/speculation: Prepare for per task indirect branch speculation control
  x86/speculation: Add command line control for indirect branch speculation
  x86/speculation: Unify conditional spectre v2 print functions
  x86/speculataion: Mark command line parser data __initdata
  x86/speculation: Mark string arrays const correctly
  x86/speculation: Reorder the spec_v2 code
  x86/l1tf: Show actual SMT state
  x86/speculation: Rework SMT state change
  sched/smt: Expose sched_smt_present static key
  ...
2018-12-01 12:35:48 -08:00
Linus Torvalds 880584176e for-linus-20181201
-----BEGIN PGP SIGNATURE-----
 
 iQJEBAABCAAuFiEEwPw5LcreJtl1+l5K99NY+ylx4KYFAlwC1c4QHGF4Ym9lQGtl
 cm5lbC5kawAKCRD301j7KXHgppxmD/4pqn8REEh/QUXWhCJbOXLLLxfQju7Uxs/v
 j2Bc6W/e7Z9jvKAs06IIhaV6SxBrM0oUebf/hJY0E/kTSHiNPJqx/X3W9hFYOo+p
 EJau3vavOrxVzgq5zt8S/i//HeanT+H37nE9WDqSRKXTta8JFDw+DoysepILTUvN
 WGDjuplPcurwmf2W1qES+5vNy/Jpln9ErNuqPBSjc6shozQ8WAzvuupVs+uZEpeK
 +gqrx0pJYrtoU+pSUK+Bt6bSzzp8Z0qHGIVMAabNULbz43qblK0ILRE+qLFbFwsB
 62EMMtX9b2Lsvqpoe2cQ+deQlUalsGVmpyE+7GP/evZbVmtD/NoH6cJQ/dA/tFtw
 cluL3rWBJKB5OZ1yatDE2/rUYsGo5FzqMUz/tIWSf2FdZcLfhRNLka7DueSA6NQe
 wtLJU9GrME67+t+PqncjDxoyQYma4oynAcc5dfqlBQv5OP7HDf4TP28g8FdkHjcy
 fEXAp58516YZiCpoWZf6dPR9fUQ0A1eF+qxHnUacy5tHN4AKPrccU3+k+0WStFNf
 qaOPkj4kWtv17d2DO4UoqAtBqFO16QCYSsa5+drpDeTOq9QgGqA6O+sGngN0LsxS
 F7x3msgBIkgEFYFtpuMBXnamdooiZMKrzI0Ctn7PK8b5Qx1OgRNCZcTQD4uql1Fj
 L6R/6Ynibg==
 =lMlT
 -----END PGP SIGNATURE-----

Merge tag 'for-linus-20181201' of git://git.kernel.dk/linux-block

Pull block layer fixes from Jens Axboe:

 - Single range elevator discard merge fix, that caused crashes (Ming)

 - Fix for a regression in O_DIRECT, where we could potentially lose the
   error value (Maximilian Heyne)

 - NVMe pull request from Christoph, with little fixes all over the map
   for NVMe.

* tag 'for-linus-20181201' of git://git.kernel.dk/linux-block:
  block: fix single range discard merge
  nvme-rdma: fix double freeing of async event data
  nvme: flush namespace scanning work just before removing namespaces
  nvme: warn when finding multi-port subsystems without multipathing enabled
  fs: fix lost error code in dio_complete
  nvme-pci: fix surprise removal
  nvme-fc: initialize nvme_req(rq)->ctrl after calling __nvme_fc_init_request()
  nvme: Free ctrl device name on init failure
2018-12-01 11:36:32 -08:00
Linus Torvalds c734b42583 pci-v4.20-fixes-2
-----BEGIN PGP SIGNATURE-----
 
 iQJIBAABCgAyFiEEgMe7l+5h9hnxdsnuWYigwDrT+vwFAlwCH4wUHGJoZWxnYWFz
 QGdvb2dsZS5jb20ACgkQWYigwDrT+vxwBA/+NpVj9yl5UGFDeHP04GHpikzft98e
 AQInZnNQOZb0hLzDalwKWuA/yFTUE93VSvqby7hOQojbcI3uRnjy+4gm78fakiEX
 V33tR1cNTe0j+Fk0BBirHaLWWOprhIeXJGoocaSXlGoRbqgBBtQ27eoPrSno/lRe
 QoEFSFdhUmZ6A+oInoBUmrGPgvsX+c2zSUWLDn6CMSHO619C4U0ZGA8wyZhilhCJ
 TxVSd1FWUEVNjTFfmyDi6h240iJKj+FVGOKIDNtIThYrr3V0bRZ/uKQmSSEuaF9m
 QqyKN0bezs5pUXb5WCmG0YywWvmTR2dqv9dOzpsEuoioLbws84Ip6kCFQr2z4AG/
 FDA5CMI1pAFbMOjJJxQ69CZnUY1XVqM2irEd3uZngbhJmxth+0JJNWwkrnGlxlTj
 5JiQSiPihActvlo+D0LulWgBmPzDZuNp9szXnQibVHlMCPBduTE+Nz+6+F7YNTIq
 KT6h2WidbMyduMV+l1Iw2KAsiFYywiHDOrm7dW/2UjeKF+MbsuPm/dcmsJgFZLd7
 ebhI+T3W8JAZTbBGqfvWAGOCpUgLJjYZoCKkaPd0iiHXgTZiVba9G24I/ECLBt+B
 3NZ6RGkMzp4c6gOoDLJSQsK6a4ABsrZ4LUYZIBkPgiFB1eeJG+uMT2zDpBJ01e0L
 dxg94iWjR5def2E=
 =whfV
 -----END PGP SIGNATURE-----

Merge tag 'pci-v4.20-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI fixes from Bjorn Helgaas:

 - Fix a link speed checking interface that broke PCIe gen3 cards in
   gen1 slots (Mikulas Patocka)

 - Fix an imx6 link training error (Trent Piepho)

 - Fix a layerscape outbound window accessor calling error (Hou
   Zhiqiang)

 - Fix a DesignWare endpoint MSI-X address calculation error (Gustavo
   Pimentel)

* tag 'pci-v4.20-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI: Fix incorrect value returned from pcie_get_speed_cap()
  PCI: dwc: Fix MSI-X EP framework address calculation bug
  PCI: layerscape: Fix wrong invocation of outbound window disable accessor
  PCI: imx6: Fix link training status detection in link up check
2018-12-01 11:32:49 -08:00
Bjorn Helgaas c74eadf881 Merge remote-tracking branch 'lorenzo/pci/controller-fixes' into for-linus
- Fix DesignWare endpoint MSI-X address calculation bug (Gustavo
    Pimentel)

  - Fix Layerscape outbound window disable usage (Hou Zhiqiang)

  - Fix imx6 link up detection (Trent Piepho)

* lorenzo/pci/controller-fixes:
  PCI: dwc: Fix MSI-X EP framework address calculation bug
  PCI: layerscape: Fix wrong invocation of outbound window disable accessor
  PCI: imx6: Fix link training status detection in link up check
2018-11-30 23:42:08 -06:00
Mikulas Patocka f1f90e254e PCI: Fix incorrect value returned from pcie_get_speed_cap()
The macros PCI_EXP_LNKCAP_SLS_*GB are values, not bit masks.  We must mask
the register and compare it against them.

This fixes errors like this:

  amdgpu: [powerplay] failed to send message 261 ret is 0

when a PCIe-v3 card is plugged into a PCIe-v1 slot, because the slot is
being incorrectly reported as PCIe-v3 capable.

6cf57be0f7, which appeared in v4.17, added pcie_get_speed_cap() with the
incorrect test of PCI_EXP_LNKCAP_SLS as a bitmask.  5d9a633040, which
appeared in v4.19, changed amdgpu to use pcie_get_speed_cap(), so the
amdgpu bug reports below are regressions in v4.19.

Fixes: 6cf57be0f7 ("PCI: Add pcie_get_speed_cap() to find max supported link speed")
Fixes: 5d9a633040 ("drm/amdgpu: use pcie functions for link width and speed")
Link: https://bugs.freedesktop.org/show_bug.cgi?id=108704
Link: https://bugs.freedesktop.org/show_bug.cgi?id=108778
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
[bhelgaas: update comment, remove use of PCI_EXP_LNKCAP_SLS_8_0GB and
PCI_EXP_LNKCAP_SLS_16_0GB since those should be covered by PCI_EXP_LNKCAP2,
remove test of PCI_EXP_LNKCAP for zero, since that register is required]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org	# v4.17+
2018-11-30 23:42:03 -06:00
Linus Torvalds d8f190ee83 Merge branch 'akpm' (patches from Andrew)
Merge misc fixes from Andrew Morton:
 "31 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (31 commits)
  ocfs2: fix potential use after free
  mm/khugepaged: fix the xas_create_range() error path
  mm/khugepaged: collapse_shmem() do not crash on Compound
  mm/khugepaged: collapse_shmem() without freezing new_page
  mm/khugepaged: minor reorderings in collapse_shmem()
  mm/khugepaged: collapse_shmem() remember to clear holes
  mm/khugepaged: fix crashes due to misaccounted holes
  mm/khugepaged: collapse_shmem() stop if punched or truncated
  mm/huge_memory: fix lockdep complaint on 32-bit i_size_read()
  mm/huge_memory: splitting set mapping+index before unfreeze
  mm/huge_memory: rename freeze_page() to unmap_page()
  initramfs: clean old path before creating a hardlink
  kernel/kcov.c: mark funcs in __sanitizer_cov_trace_pc() as notrace
  psi: make disabling/enabling easier for vendor kernels
  proc: fixup map_files test on arm
  debugobjects: avoid recursive calls with kmemleak
  userfaultfd: shmem: UFFDIO_COPY: set the page dirty if VM_WRITE is not set
  userfaultfd: shmem: add i_size checks
  userfaultfd: shmem/hugetlbfs: only allow to register VM_MAYWRITE vmas
  userfaultfd: shmem: allocate anonymous memory for MAP_PRIVATE shmem
  ...
2018-11-30 18:45:49 -08:00
Linus Torvalds 6c7954b7eb A few more MIPS fixes for 4.20:
- Fix mips_get_syscall_arg() to operate on the task specified when
    detecting o32 tasks running on MIPS64 kernels.
 
  - Fix some incorrect GPIO pin muxing for the MT7620 SoC.
 
  - Update the linux-mips mailing list address.
 -----BEGIN PGP SIGNATURE-----
 
 iIsEABYIADMWIQRgLjeFAZEXQzy86/s+p5+stXUA3QUCXAHFuBUccGF1bC5idXJ0
 b25AbWlwcy5jb20ACgkQPqefrLV1AN0eOAEA9RshRqEGpFbTX8fm5N6/2SLlS/Rl
 CZ/79El7LEfesMUA/2Kh9ApEx5cd5/1DhqNBCGUhnLvJt7BaHT49H/7KySAM
 =tCjn
 -----END PGP SIGNATURE-----

Merge tag 'mips_fixes_4.20_4' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux

Pull few more MIPS fixes from Paul Burton:

 - Fix mips_get_syscall_arg() to operate on the task specified when
   detecting o32 tasks running on MIPS64 kernels.

 - Fix some incorrect GPIO pin muxing for the MT7620 SoC.

 - Update the linux-mips mailing list address.

* tag 'mips_fixes_4.20_4' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
  MAINTAINERS: Update linux-mips mailing list address
  MIPS: ralink: Fix mt7620 nd_sd pinmux
  mips: fix mips_get_syscall_arg o32 check
2018-11-30 18:41:06 -08:00
Linus Torvalds 868dda00b9 - Cortex-A76 erratum workaround
- ftrace fix to enable syscall events on arm64
 
 - Fix uninitialised pointer in iort_get_platform_device_domain()
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEE5RElWfyWxS+3PLO2a9axLQDIXvEFAlwBhskACgkQa9axLQDI
 XvFS5g//UOW/9GvEXRCZF7Okm6FSYw/ADKnrr8Qv39JgKqp5AXG1Adg28QZzdiSD
 E+WKr07SyVj6lDc6gwGO4SzcOFNFO15DgdGY2i9v+cVQu5h/VmS3CiBlJG98WTFe
 Og0mDx3lnHLCUoYADt3YGzWDOXwco0OK2JGKs2Drk4ABoUEDt7dIsDfJtbIOGOpv
 Msx1KnQEuIV3dnZzr0+8PC89nbDG0A8+Mc7KScrESUmjNaO+c5hbcxxScsFswLCJ
 kaX6NttsqqilONt9JrQsDelYLrTP8A0UsYgTb2K36IyB5yCYhzZYMRVMw6wLhrKV
 VfnzjnN/xrJRnPoYW4yDTKLSLbnPuoF8k44XPR8AJA1AE+MLhT+C6yPZ3qcnFR7R
 LXtdDFBihe90HFYIBa1zt+E9jHoOTuWLkXJQTB0kdHjSXwwS0Ji7YuoyEolBQAUd
 QCkYdxSswnl5wGkXqI69V6lJ21lePtXZ8rnnl0lnNQNUyhzcuJFy9M7CcNKHHVcX
 pawnLlu3SJgZKrAR+d8SylSUVHqz3MV/8SuybC7WePl2d/0e4Qhry1y4RhrWuJZJ
 rxGNaBgql3sWmi4aHw65KaYna6YoXrsiwKwl0TK6ZgVzgR4Sk8AJkTk4WYF56ECc
 7E+szTmN3oFm+Bveua9ibryYlx9ayA9wh0UNIrjFCnZDNz9bl4s=
 =HpOx
 -----END PGP SIGNATURE-----

Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Catalin Marinas:

 - Cortex-A76 erratum workaround

 - ftrace fix to enable syscall events on arm64

 - Fix uninitialised pointer in iort_get_platform_device_domain()

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  ACPI/IORT: Fix iort_get_platform_device_domain() uninitialized pointer value
  arm64: ftrace: Fix to enable syscall events on arm64
  arm64: Add workaround for Cortex-A76 erratum 1286807
2018-11-30 18:39:07 -08:00
Linus Torvalds 1f817429b2 stackleak plugin fix
- Fix crash by not allowing kprobing of stackleak_erase() (Alexander Popov)
 -----BEGIN PGP SIGNATURE-----
 Comment: Kees Cook <kees@outflux.net>
 
 iQJKBAABCgA0FiEEpcP2jyKd1g9yPm4TiXL039xtwCYFAlwBcL4WHGtlZXNjb29r
 QGNocm9taXVtLm9yZwAKCRCJcvTf3G3AJjEiD/9WErdSde1/jka9VX9SPdMFush9
 MCb1y0TpS+xlhF7Jyhxz9AJIRVwY0hXSO40RinYPJ4zgxXg+PjVJU/q2HhtGC4u1
 ZdUAblkw1WLEmYjKLuwyLcZmCAlodBpm+hMlYubAD2mfArtX4vLElcMd4livTz7x
 E4lJ/5WKVQzfadJ/onpltPxgQDVrov7u+uatrL7uFfb2geiCNV4lgeBqoJSx2QJd
 i8B7a28uifLS+ph5TJDx39nw7GJ4Iy4nnJofdX23kgKzfei5wef1mwdoaC6x93QL
 rrmhp3T4Mghnxi+txx+u8Bw7VxMiUnmlAoHQQcBQ0oLDMlTY+CQW3o32kvk+oHip
 5onLfQpHgn4kjd+Ns/qFFxr2oHYU0ODbEQ4taVXBu/f0jj0blQdEgLPWVwNpWS7l
 DoFezQ6qNjy1UJlbtg8t7dq1vUF2DTkaRj9JMPCqCBDX+zJrUZpOlCBoB+l4lC6e
 wJSh7m6QCNVh0fmIzctMenkio37rf2rEIp+l0/BMxFz0KsvlEBthb1x5dAlY6RK9
 Wq52oOLzduWTw3683lBnRYBFbsrDo9Y6LmY5wwkFFqx3TGZtcnomUtIqep8AE7YJ
 SH5QtrUUZKPLbPfHTr/k2G75daaJu8TIZ8cgmRmNe+o/LzH2u3IEnfYVteCxeeyj
 Bekcq9lWU5AVm4jNuQ==
 =OU+C
 -----END PGP SIGNATURE-----

Merge tag 'gcc-plugins-v4.20-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull stackleak plugin fix from Kees Cook:
 "Fix crash by not allowing kprobing of stackleak_erase() (Alexander
  Popov)"

* tag 'gcc-plugins-v4.20-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  stackleak: Disable function tracing and kprobes for stackleak_erase()
2018-11-30 18:36:30 -08:00
Linus Torvalds fd3b3e0ec5 FS-Cache fixes
-----BEGIN PGP SIGNATURE-----
 
 iQIVAwUAXAFfSPu3V2unywtrAQKPQRAAiHDs2d35Kc2qkTFLwGiP+wr+3+7Cyz7A
 hrWAvR7Oe7nBFVPmp6pwEnpBhf3mPsWlQpw3ZKZPo4fDQyRX+mDFC+2C7hkU1Q/J
 BkjTG4vYn1jiQGlL3SD1PfUxcWfwzoK4cz+V3hnFY5y0dsKiBZBR1Lw5G+UkaCnD
 4VaC3VAG56Vh14o5qSF3TWLZFyZ+JN6YA/M/DnwRPl8y4jnj1tJLs1DjdpEcWv6r
 15FKb2FRYaC7MRehpXd22JX6fv5ii2xazU3IfLucBrb4Vj+wAJrBY4wA3x/CFkAa
 as1VmxLkgoJEWa3M71tQOJBC8+QqkRb++PRUI3aadt2H4hXHfx3AmBuKkVroeS8o
 0BDhWGiTW4AqXUajkQcTc/mKV2x6h83V3DLyBRL1iC3+7qaBVhPNtxW+v6ln0Ce1
 FRG2I9LZp+RtWrVVyIPsa03V2V5OD7PTIBXK6TYtuqL+3uu7TNNc+UySvqDHWLL+
 Zo2ogpq//kZbjMdntNVhDEj12LW3zG05dtNuFEeJeuPM28yiXXtoWDmI49RAUQ4v
 RN6SwEXnKWehwG+YITYavV6gfHWlXdZ7grgCMHyViF/s9khBp7AGxbRzR0JXgXqL
 ko1Ojpbq2mdvjwGFQfde4MAqAxM3FPxdxGVLrgi+lgGTsEKv6IzrTo28teyAM81O
 D6cH0ldY90w=
 =6y+F
 -----END PGP SIGNATURE-----

Merge tag 'fscache-fixes-20181130' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs

Pull fscache and cachefiles fixes from David Howells:
 "Misc fixes:

   - Fix an assertion failure at fs/cachefiles/xattr.c:138 caused by a
     race between a cache object lookup failing and someone attempting
     to reenable that object, thereby triggering an update of the
     object's attributes.

   - Fix an assertion failure at fs/fscache/operation.c:449 caused by a
     split atomic subtract and atomic read that allows a race to happen.

   - Fix a leak of backing pages when simultaneously reading the same
     page from the same object from two or more threads.

   - Fix a hang due to a race between a cache object being discarded and
     the corresponding cookie being reenabled.

  There are also some minor cleanups:

   - Cast an enum value to a different enum type to prevent clang from
     generating a warning. This shouldn't cause any sort of change in
     the emitted code.

   - Use ktime_get_real_seconds() instead of get_seconds(). This is just
     used to uniquify a filename for an object to be placed in the
     graveyard. Objects placed there are deleted by cachfilesd in
     userspace immediately thereafter.

   - Remove an initialised, but otherwise unused variable. This should
     have been entirely optimised away anyway"

* tag 'fscache-fixes-20181130' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
  fscache, cachefiles: remove redundant variable 'cache'
  cachefiles: avoid deprecated get_seconds()
  cachefiles: Explicitly cast enumerated type in put_object
  fscache: fix race between enablement and dropping of object
  cachefiles: Fix page leak in cachefiles_read_backing_file while vmscan is active
  fscache: Fix race in fscache_op_complete() due to split atomic_sub & read
  cachefiles: Fix an assertion failure when trying to update a failed object
2018-11-30 18:32:33 -08:00
Paul Burton 6584297b78
MAINTAINERS: Update linux-mips mailing list address
The linux-mips.org infrastructure has been unreliable recently & nobody
with sufficient access to fix it is around to do so. As a result we're
moving away from it, and part of this is migrating our mailing list to
kernel.org.

Replace all instances of linux-mips@linux-mips.org in MAINTAINERS with
the shiny new linux-mips@vger.kernel.org address.

The new list is now being archived on kernel.org at
https://lore.kernel.org/linux-mips/ which also holds the history of the
old linux-mips.org list.

Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: linux-mips@vger.kernel.org
Cc: linux-mips@linux-mips.org
2018-11-30 15:19:36 -08:00
Pan Bian 164f7e5867 ocfs2: fix potential use after free
ocfs2_get_dentry() calls iput(inode) to drop the reference count of
inode, and if the reference count hits 0, inode is freed.  However, in
this function, it then reads inode->i_generation, which may result in a
use after free bug.  Move the put operation later.

Link: http://lkml.kernel.org/r/1543109237-110227-1-git-send-email-bianpan2016@163.com
Fixes: 781f200cb7a("ocfs2: Remove masklog ML_EXPORT.")
Signed-off-by: Pan Bian <bianpan2016@163.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Joseph Qi <jiangqi903@gmail.com>
Cc: Changwei Ge <ge.changwei@h3c.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-11-30 14:56:15 -08:00
Hugh Dickins 95feeabb77 mm/khugepaged: fix the xas_create_range() error path
collapse_shmem()'s xas_nomem() is very unlikely to fail, but it is
rightly given a failure path, so move the whole xas_create_range() block
up before __SetPageLocked(new_page): so that it does not need to
remember to unlock_page(new_page).

Add the missing mem_cgroup_cancel_charge(), and set (currently unused)
result to SCAN_FAIL rather than SCAN_SUCCEED.

Link: http://lkml.kernel.org/r/alpine.LSU.2.11.1811261531200.2275@eggly.anvils
Fixes: 77da9389b9 ("mm: Convert collapse_shmem to XArray")
Signed-off-by: Hugh Dickins <hughd@kernel.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Jerome Glisse <jglisse@redhat.com>
Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-11-30 14:56:15 -08:00
Hugh Dickins 06a5e1268a mm/khugepaged: collapse_shmem() do not crash on Compound
collapse_shmem()'s VM_BUG_ON_PAGE(PageTransCompound) was unsafe: before
it holds page lock of the first page, racing truncation then extension
might conceivably have inserted a hugepage there already.  Fail with the
SCAN_PAGE_COMPOUND result, instead of crashing (CONFIG_DEBUG_VM=y) or
otherwise mishandling the unexpected hugepage - though later we might
code up a more constructive way of handling it, with SCAN_SUCCESS.

Link: http://lkml.kernel.org/r/alpine.LSU.2.11.1811261529310.2275@eggly.anvils
Fixes: f3f0e1d215 ("khugepaged: add support of collapse for tmpfs/shmem pages")
Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Jerome Glisse <jglisse@redhat.com>
Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: <stable@vger.kernel.org>	[4.8+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-11-30 14:56:15 -08:00
Hugh Dickins 87c460a0bd mm/khugepaged: collapse_shmem() without freezing new_page
khugepaged's collapse_shmem() does almost all of its work, to assemble
the huge new_page from 512 scattered old pages, with the new_page's
refcount frozen to 0 (and refcounts of all old pages so far also frozen
to 0).  Including shmem_getpage() to read in any which were out on swap,
memory reclaim if necessary to allocate their intermediate pages, and
copying over all the data from old to new.

Imagine the frozen refcount as a spinlock held, but without any lock
debugging to highlight the abuse: it's not good, and under serious load
heads into lockups - speculative getters of the page are not expecting
to spin while khugepaged is rescheduled.

One can get a little further under load by hacking around elsewhere; but
fortunately, freezing the new_page turns out to have been entirely
unnecessary, with no hacks needed elsewhere.

The huge new_page lock is already held throughout, and guards all its
subpages as they are brought one by one into the page cache tree; and
anything reading the data in that page, without the lock, before it has
been marked PageUptodate, would already be in the wrong.  So simply
eliminate the freezing of the new_page.

Each of the old pages remains frozen with refcount 0 after it has been
replaced by a new_page subpage in the page cache tree, until they are
all unfrozen on success or failure: just as before.  They could be
unfrozen sooner, but cause no problem once no longer visible to
find_get_entry(), filemap_map_pages() and other speculative lookups.

Link: http://lkml.kernel.org/r/alpine.LSU.2.11.1811261527570.2275@eggly.anvils
Fixes: f3f0e1d215 ("khugepaged: add support of collapse for tmpfs/shmem pages")
Signed-off-by: Hugh Dickins <hughd@google.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Jerome Glisse <jglisse@redhat.com>
Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: <stable@vger.kernel.org>	[4.8+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-11-30 14:56:15 -08:00