Commit Graph

915509 Commits

Author SHA1 Message Date
Nicholas Piggin
9600f261ac powerpc/64s/exception: Move KVM test to common code
This allows more code to be moved out of unrelocated regions. The
system call KVMTEST is changed to be open-coded and remain in the
tramp area to avoid having to move it to entry_64.S. The custom nature
of the system call entry code means the hcall case can be made more
streamlined than regular interrupt handlers.

mpe: Incorporate fix from Nick:

Moving KVM test to the common entry code missed the case of HMI and
MCE, which do not do __GEN_COMMON_ENTRY (because they don't want to
switch to virt mode).

This means a MCE or HMI exception that is taken while KVM is running a
guest context will not be switched out of that context, and KVM won't
be notified. Found by running sigfuz in guest with patched host on
POWER9 DD2.3, which causes some TM related HMI interrupts (which are
expected and supposed to be handled by KVM).

This fix adds a __GEN_REALMODE_COMMON_ENTRY for those handlers to add
the KVM test. This makes them look a little more like other handlers
that all use __GEN_COMMON_ENTRY.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200225173541.1549955-13-npiggin@gmail.com
2020-04-01 13:42:11 +11:00
Nicholas Piggin
0eddf327e1 powerpc/64s/exception: Move soft-mask test to common code
As well as moving code out of the unrelocated vectors, this allows the
masked handlers to be moved to common code, and allows the soft_nmi
handler to be generated more like a regular handler.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200225173541.1549955-12-npiggin@gmail.com
2020-04-01 13:42:11 +11:00
Nicholas Piggin
8729c26e67 powerpc/64s/exception: Move real to virt switch into the common handler
The real mode interrupt entry points currently use rfid to branch to
the common handler in virtual mode. This is a significant amount of
code, and forces other code (notably the KVM test) to live in the
real mode handler.

In the interest of minimising the amount of code that runs unrelocated
move the switch to virt mode into the common code, and do it with
mtmsrd, which avoids clobbering SRRs (although the post-KVMTEST
performance of real-mode interrupt handlers is not a big concern these
days).

This requires CTR to always be saved (real-mode needs to reach 0xc...)
but that's not a huge impact these days. It could be optimized away in
future.

mpe: Incorporate fix from Nick:

It's possible for interrupts to be replayed when TM is enabled and
suspended, for example rt_sigreturn, where the mtmsrd MSR_KERNEL in
the real-mode entry point to the common handler causes a TM Bad Thing
exception (due to attempting to clear suspended).

The fix for this is to have replay interrupts go to the _virt entry
point and skip the mtmsrd, which matches what happens before this
patch.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200225173541.1549955-11-npiggin@gmail.com
2020-04-01 13:42:11 +11:00
Nicholas Piggin
a3cd35be6e powerpc/64s/exception: Add ISIDE option
Rather than using DAR=2 to select the i-side registers, add an
explicit option.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200225173541.1549955-10-npiggin@gmail.com
2020-04-01 13:42:10 +11:00
Nicholas Piggin
b177ae2f8c powerpc/64s/exception: Remove old INT_KVM_HANDLER
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200225173541.1549955-9-npiggin@gmail.com
2020-04-01 13:42:10 +11:00
Nicholas Piggin
6d71759a74 powerpc/64s/exception: Remove old INT_COMMON macro
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200225173541.1549955-8-npiggin@gmail.com
2020-04-01 13:42:10 +11:00
Nicholas Piggin
fc589ee416 powerpc/64s/exception: Remove old INT_ENTRY macro
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200225173541.1549955-7-npiggin@gmail.com
2020-04-01 13:42:10 +11:00
Nicholas Piggin
4f50541f67 powerpc/64s/exception: Move all interrupt handlers to new style code gen macros
Aside from label names and BUG line numbers, the generated code change
is an additional HMI KVM handler added for the "late" KVM handler,
because early and late HMI generation is achieved by defining two
different interrupt types.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200225173541.1549955-6-npiggin@gmail.com
2020-04-01 13:42:10 +11:00
Nicholas Piggin
eb204d863b powerpc/64s/exception: Expand EXC_COMMON and EXC_COMMON_ASYNC macros
These don't provide a large amount of code sharing. Removing them
makes code easier to shuffle around. For example, some of the common
instructions will be moved into the common code gen macro.

No generated code change.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200225173541.1549955-5-npiggin@gmail.com
2020-04-01 13:42:10 +11:00
Nicholas Piggin
d52fd3d31b powerpc/64s/exception: Add GEN_KVM macro that uses INT_DEFINE parameters
No generated code change.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200225173541.1549955-4-npiggin@gmail.com
2020-04-01 13:42:09 +11:00
Nicholas Piggin
7cb3a1a03e powerpc/64s/exception: Add GEN_COMMON macro that uses INT_DEFINE parameters
No generated code change.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200225173541.1549955-3-npiggin@gmail.com
2020-04-01 13:42:09 +11:00
Nicholas Piggin
a42a239db3 powerpc/64s/exception: Introduce INT_DEFINE parameter block for code generation
The code generation macro arguments are difficult to read, and
defaults can't easily be used.

This introduces a block where parameters can be set for interrupt
handler code generation by the subsequent macros, and adds the first
generation macro for interrupt entry.

One interrupt handler is converted to the new macros to demonstrate
the change, the rest will be coverted all at once.

No generated code change.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200225173541.1549955-2-npiggin@gmail.com
2020-04-01 13:42:09 +11:00
Nicholas Piggin
a2e366832f powerpc/64: mark emergency stacks valid to unwind
Before:

  WARNING: CPU: 0 PID: 494 at arch/powerpc/kernel/irq.c:343
  CPU: 0 PID: 494 Comm: a Tainted: G        W
  NIP:  c00000000001ed2c LR: c000000000d13190 CTR: c00000000003f910
  REGS: c0000001fffd3870 TRAP: 0700   Tainted: G        W
  MSR:  8000000000021003 <SF,ME,RI,LE>  CR: 28000488  XER: 00000000
  CFAR: c00000000001ec90 IRQMASK: 0
  GPR00: c000000000aeb12c c0000001fffd3b00 c0000000012ba300 0000000000000000
  GPR04: 0000000000000000 0000000000000000 000000010bd207c8 6b00696e74657272
  GPR08: 0000000000000000 0000000000000000 0000000000000000 efbeadde00000000
  GPR12: 0000000000000000 c0000000014a0000 0000000000000000 0000000000000000
  GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
  GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
  GPR24: 0000000000000000 0000000000000000 0000000000000000 000000010bd207bc
  GPR28: 0000000000000000 c00000000148a898 0000000000000000 c0000001ffff3f50
  NIP [c00000000001ed2c] arch_local_irq_restore.part.0+0xac/0x100
  LR [c000000000d13190] _raw_spin_unlock_irqrestore+0x50/0xc0
  Call Trace:
  Instruction dump:
  60000000 7d2000a6 71298000 41820068 39200002 7d210164 4bffff9c 60000000
  60000000 7d2000a6 71298000 4c820020 <0fe00000> 4e800020 60000000 60000000

After:

  WARNING: CPU: 0 PID: 499 at arch/powerpc/kernel/irq.c:343
  CPU: 0 PID: 499 Comm: a Not tainted
  NIP:  c00000000001ed2c LR: c000000000d13210 CTR: c00000000003f980
  REGS: c0000001fffd3870 TRAP: 0700   Not tainted
  MSR:  8000000000021003 <SF,ME,RI,LE>  CR: 28000488  XER: 00000000
  CFAR: c00000000001ec90 IRQMASK: 0
  GPR00: c000000000aeb1ac c0000001fffd3b00 c0000000012ba300 0000000000000000
  GPR04: 0000000000000000 0000000000000000 00000001347607c8 6b00696e74657272
  GPR08: 0000000000000000 0000000000000000 0000000000000000 efbeadde00000000
  GPR12: 0000000000000000 c0000000014a0000 0000000000000000 0000000000000000
  GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
  GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
  GPR24: 0000000000000000 0000000000000000 0000000000000000 00000001347607bc
  GPR28: 0000000000000000 c00000000148a898 0000000000000000 c0000001ffff3f50
  NIP [c00000000001ed2c] arch_local_irq_restore.part.0+0xac/0x100
  LR [c000000000d13210] _raw_spin_unlock_irqrestore+0x50/0xc0
  Call Trace:
  [c0000001fffd3b20] [c000000000aeb1ac] of_find_property+0x6c/0x90
  [c0000001fffd3b70] [c000000000aeb1f0] of_get_property+0x20/0x40
  [c0000001fffd3b90] [c000000000042cdc] rtas_token+0x3c/0x70
  [c0000001fffd3bb0] [c0000000000dc318] fwnmi_release_errinfo+0x28/0x70
  [c0000001fffd3c10] [c0000000000dcd8c] pseries_machine_check_realmode+0x1dc/0x540
  [c0000001fffd3cd0] [c00000000003fe04] machine_check_early+0x54/0x70
  [c0000001fffd3d00] [c000000000008384] machine_check_early_common+0x134/0x1f0
  --- interrupt: 200 at 0x1347607c8
      LR = 0x7fffafbd8328
  Instruction dump:
  60000000 7d2000a6 71298000 41820068 39200002 7d210164 4bffff9c 60000000
  60000000 7d2000a6 71298000 4c820020 <0fe00000> 4e800020 60000000 60000000

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200325104144.158362-1-npiggin@gmail.com
2020-04-01 13:42:09 +11:00
Michael Ellerman
c7def7fbde powerpc/64/tm: Don't let userspace set regs->trap via sigreturn
In restore_tm_sigcontexts() we take the trap value directly from the
user sigcontext with no checking:

	err |= __get_user(regs->trap, &sc->gp_regs[PT_TRAP]);

This means we can be in the kernel with an arbitrary regs->trap value.

Although that's not immediately problematic, there is a risk we could
trigger one of the uses of CHECK_FULL_REGS():

	#define CHECK_FULL_REGS(regs)	BUG_ON(regs->trap & 1)

It can also cause us to unnecessarily save non-volatile GPRs again in
save_nvgprs(), which shouldn't be problematic but is still wrong.

It's also possible it could trick the syscall restart machinery, which
relies on regs->trap not being == 0xc00 (see 9a81c16b52 ("powerpc:
fix double syscall restarts")), though I haven't been able to make
that happen.

Finally it doesn't match the behaviour of the non-TM case, in
restore_sigcontext() which zeroes regs->trap.

So change restore_tm_sigcontexts() to zero regs->trap.

This was discovered while testing Nick's upcoming rewrite of the
syscall entry path. In that series the call to save_nvgprs() prior to
signal handling (do_notify_resume()) is removed, which leaves the
low-bit of regs->trap uncleared which can then trigger the FULL_REGS()
WARNs in setup_tm_sigcontexts().

Fixes: 2b0a576d15 ("powerpc: Add new transactional memory state to the signal context")
Cc: stable@vger.kernel.org # v3.9+
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200401023836.3286664-1-mpe@ellerman.id.au
2020-04-01 13:42:00 +11:00
kbuild test robot
60f537d575 scsi: bnx2fc: fix boolreturn.cocci warnings
drivers/scsi/bnx2fc/bnx2fc_hwi.c:1019:9-10: WARNING: return of 0/1 in function 'bnx2fc_pending_work' with return type bool

 Return statements in functions returning bool should use
 true/false instead of 1/0.

Generated by: scripts/coccinelle/misc/boolreturn.cocci

Fixes: 77331115e2 ("scsi: bnx2fc: Process the RQE with CQE in interrupt context")
CC: Javed Hasan <jhasan@marvell.com>
Acked-by: Javed Hasan <jhasan@marvell.com>
Signed-off-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-03-31 22:35:02 -04:00
Joe Perches
cec9cbac52 scsi: zfcp: use fallthrough;
Convert the various uses of fallthrough comments to fallthrough;

Done via script
Link: https://lore.kernel.org/lkml/b56602fcf79f849e733e7b521bb0e17895d390fa.1582230379.git.joe.com/

Signed-off-by: Joe Perches <joe@perches.com>
Reviewed-by: Fedor Loshakov <loshakov@linux.ibm.com>
Reviewed-by: Steffen Maier <maier@linux.ibm.com>
[bblock@linux.ibm.com: resolved merge conflict with recently upstream-sent patch "zfcp: expose fabric name as common fc_host sysfs attribute"]
Link: https://lore.kernel.org/r/d14669a67a17392490d3184117941123765db1a4.1585663010.git.bblock@linux.ibm.com
Signed-off-by: Benjamin Block <bblock@linux.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-03-31 22:24:02 -04:00
Hannes Reinecke
4e6c78d16a scsi: aacraid: do not overwrite retval in aac_reset_adapter()
'retval' got assigned a value twice, causing the original value to be lost.

Link: https://lore.kernel.org/r/20200331084111.95039-1-hare@suse.de
Fixes: 3d3ca53b16 ("scsi: aacraid: use scsi_host_(block,unblock) to block I/O")
Reported-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-03-31 22:13:49 -04:00
Bart Van Assche
72655c0ebd scsi: sr: Fix sr_block_release()
This patch fixes the following two complaints:

WARNING: CPU: 3 PID: 1326 at kernel/locking/mutex-debug.c:103 mutex_destroy+0x74/0x80
Modules linked in: scsi_debug sd_mod t10_pi brd scsi_transport_iscsi af_packet crct10dif_pclmul sg aesni_intel glue_helper virtio_balloon button crypto_simd cryptd intel_agp intel_gtt agpgart ip_tables x_tables ipv6 nf_defrag_ipv6 autofs4 ext4 crc16 mbcache jbd2 hid_generic usbhid hid sr_mod cdrom ata_generic pata_acpi virtio_blk virtio_net net_failover failover ata_piix xhci_pci ahci libahci xhci_hcd i2c_piix4 libata virtio_pci usbcore i2c_core virtio_ring scsi_mod usb_common virtio [last unloaded: scsi_debug]
CPU: 3 PID: 1326 Comm: systemd-udevd Not tainted 5.6.0-rc1-dbg+ #1
Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
RIP: 0010:mutex_destroy+0x74/0x80
Call Trace:
 sr_kref_release+0xb9/0xd0 [sr_mod]
 scsi_cd_put+0x79/0x90 [sr_mod]
 sr_block_release+0x54/0x70 [sr_mod]
 __blkdev_put+0x2ce/0x3c0
 blkdev_put+0x68/0x220
 blkdev_close+0x4d/0x60
 __fput+0x170/0x3b0
 ____fput+0x12/0x20
 task_work_run+0xa2/0xf0
 exit_to_usermode_loop+0xeb/0xf0
 do_syscall_64+0x2be/0x300
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7fa16d40aab7

BUG: KASAN: use-after-free in __mutex_unlock_slowpath+0x98/0x420
Read of size 8 at addr ffff8881c6e4f4b0 by task systemd-udevd/1326

CPU: 3 PID: 1326 Comm: systemd-udevd Tainted: G        W         5.6.0-rc1-dbg+ #1
Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
Call Trace:
 dump_stack+0xa5/0xe6
 print_address_description.constprop.0+0x46/0x60
 __kasan_report.cold+0x7b/0x94
 kasan_report+0x16/0x20
 check_memory_region+0x140/0x1b0
 __kasan_check_read+0x15/0x20
 __mutex_unlock_slowpath+0x98/0x420
 mutex_unlock+0x16/0x20
 sr_block_release+0x5c/0x70 [sr_mod]
 __blkdev_put+0x2ce/0x3c0
hardirqs last  enabled at (1875522): [<ffffffff81bb0696>] _raw_spin_unlock_irqrestore+0x56/0x70
 blkdev_put+0x68/0x220
 blkdev_close+0x4d/0x60
 __fput+0x170/0x3b0
 ____fput+0x12/0x20
 task_work_run+0xa2/0xf0
 exit_to_usermode_loop+0xeb/0xf0
 do_syscall_64+0x2be/0x300
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7fa16d40aab7

Allocated by task 3201:
 save_stack+0x23/0x90
 __kasan_kmalloc.constprop.0+0xcf/0xe0
 kasan_kmalloc+0xd/0x10
 kmem_cache_alloc_trace+0x161/0x3c0
 sr_probe+0x12f/0xb60 [sr_mod]
 really_probe+0x183/0x5d0
 driver_probe_device+0x13f/0x1a0
 __device_attach_driver+0xe6/0x150
 bus_for_each_drv+0x101/0x160
 __device_attach+0x183/0x230
 device_initial_probe+0x17/0x20
 bus_probe_device+0x110/0x130
 device_add+0xb7b/0xd40
 scsi_sysfs_add_sdev+0xe8/0x360 [scsi_mod]
 scsi_probe_and_add_lun+0xdc4/0x14c0 [scsi_mod]
 __scsi_scan_target+0x12d/0x850 [scsi_mod]
 scsi_scan_channel+0xcd/0xe0 [scsi_mod]
 scsi_scan_host_selected+0x182/0x190 [scsi_mod]
 store_scan+0x1e9/0x200 [scsi_mod]
 dev_attr_store+0x42/0x60
 sysfs_kf_write+0x8b/0xb0
 kernfs_fop_write+0x158/0x250
 __vfs_write+0x4c/0x90
 vfs_write+0x145/0x2c0
 ksys_write+0xd7/0x180
 __x64_sys_write+0x47/0x50
 do_syscall_64+0x6f/0x300
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Freed by task 1326:
 save_stack+0x23/0x90
 __kasan_slab_free+0x13a/0x190
 kasan_slab_free+0x12/0x20
 kfree+0x109/0x410
 sr_kref_release+0xc1/0xd0 [sr_mod]
 scsi_cd_put+0x79/0x90 [sr_mod]
 sr_block_release+0x54/0x70 [sr_mod]
 __blkdev_put+0x2ce/0x3c0
 blkdev_put+0x68/0x220
 blkdev_close+0x4d/0x60
 __fput+0x170/0x3b0
 ____fput+0x12/0x20
 task_work_run+0xa2/0xf0
 exit_to_usermode_loop+0xeb/0xf0
 do_syscall_64+0x2be/0x300
 entry_SYSCALL_64_after_hwframe+0x49/0xbe

Link: https://lore.kernel.org/r/20200330025151.10535-1-bvanassche@acm.org
Fixes: 51a858817d ("scsi: sr: get rid of sr global mutex")
Cc: Merlijn Wajer <merlijn@archive.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: <stable@kernel.org>
Acked-by: Merlijn Wajer <merlijn@archive.org>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-03-31 22:10:49 -04:00
Alex Dewar
0d2b595152 scsi: aic7xxx: Remove more FreeBSD-specific code
Remove additional code for FreeBSD in aic7xxx_core.c, which is unneeded
since commit cca6cb8ad7 ("scsi: aic7xxx: Fix build using bare-metal
toolchain").

Link: https://lore.kernel.org/r/20200327191102.78554-1-alex.dewar@gmx.co.uk
Suggested-by: Martin Petersen <martin.petersen@oracle.com>
Signed-off-by: Alex Dewar <alex.dewar@gmx.co.uk>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-03-31 22:06:33 -04:00
Sreekanth Reddy
cc41f11a21 scsi: mpt3sas: Fix kernel panic observed on soft HBA unplug
Generic protection fault type kernel panic is observed when user performs
soft (ordered) HBA unplug operation while IOs are running on drives
connected to HBA.

When user performs ordered HBA removal operation, the kernel calls PCI
device's .remove() call back function where driver is flushing out all the
outstanding SCSI IO commands with DID_NO_CONNECT host byte and also unmaps
sg buffers allocated for these IO commands.

However, in the ordered HBA removal case (unlike of real HBA hot removal),
HBA device is still alive and hence HBA hardware is performing the DMA
operations to those buffers on the system memory which are already unmapped
while flushing out the outstanding SCSI IO commands and this leads to
kernel panic.

Don't flush out the outstanding IOs from .remove() path in case of ordered
removal since HBA will be still alive in this case and it can complete the
outstanding IOs. Flush out the outstanding IOs only in case of 'physical
HBA hot unplug' where there won't be any communication with the HBA.

During shutdown also it is possible that HBA hardware can perform DMA
operations on those outstanding IO buffers which are completed with
DID_NO_CONNECT by the driver from .shutdown(). So same above fix is applied
in shutdown path as well.

It is safe to drop the outstanding commands when HBA is inaccessible such
as when permanent PCI failure happens, when HBA is in non-operational
state, or when someone does a real HBA hot unplug operation. Since driver
knows that HBA is inaccessible during these cases, it is safe to drop the
outstanding commands instead of waiting for SCSI error recovery to kick in
and clear these outstanding commands.

Link: https://lore.kernel.org/r/1585302763-23007-1-git-send-email-sreekanth.reddy@broadcom.com
Fixes: c666d3be99 ("scsi: mpt3sas: wait for and flush running commands on shutdown/unload")
Cc: stable@vger.kernel.org #v4.14.174+
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-03-31 22:02:37 -04:00
Stanley Chu
1764fa2ab9 scsi: ufs: set device as active power mode after resetting device
Currently ufshcd driver assumes that bInitPowerMode parameter is not
changed by any vendors thus device power mode can be set as "Active" during
initialization.

According to UFS JEDEC specification, device power mode shall be "Active"
after HW Reset is triggered if the bInitPowerMode parameter in Device
Descriptor is default value.

By above description, we can set device power mode as "Active" after device
reset is triggered by vendor's callback. With this change, the link startup
performance can be improved in some cases by not setting link_startup_again
as true in ufshcd_link_startup().

Link: https://lore.kernel.org/r/20200327095835.10293-1-stanley.chu@mediatek.com
Reviewed-by: Can Guo <cang@codeaurora.org>
Reviewed-by: Asutosh Das <asutoshd@codeaurora.org>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-03-31 21:54:15 -04:00
Wu Bo
13e60d3ba2 scsi: iscsi: Report unbind session event when the target has been removed
If the daemon is restarted or crashes while logging out of a session, the
unbind session event sent by the kernel is not processed and is lost.  When
the daemon starts again, the session can't be unbound because the daemon is
waiting for the event message. However, the kernel has already logged out
and the event will not be resent.

When iscsid restart is complete, logout session reports error:

Logging out of session [sid: 6, target: iqn.xxxxx, portal: xx.xx.xx.xx,3260]
iscsiadm: Could not logout of [sid: 6, target: iscsiadm -m node iqn.xxxxx, portal: xx.xx.xx.xx,3260].
iscsiadm: initiator reported error (9 - internal error)
iscsiadm: Could not logout of all requested sessions

Make sure the unbind event is emitted.

[mkp: commit desc and applied by hand since patch was mangled]

Link: https://lore.kernel.org/r/4eab1771-2cb3-8e79-b31c-923652340e99@huawei.com
Reviewed-by: Lee Duncan <lduncan@suse.com>
Signed-off-by: Wu Bo <wubo40@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-03-31 21:39:58 -04:00
Linus Torvalds
1a323ea535 x86: get rid of 'errret' argument to __get_user_xyz() macross
Every remaining user just has the error case returning -EFAULT.

In fact, the exception was __get_user_asm_nozero(), which was removed in
commit 4b842e4e25 ("x86: get rid of small constant size cases in
raw_copy_{to,from}_user()"), and the other __get_user_xyz() macros just
followed suit for consistency.

Fix up some macro whitespace while at it.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-03-31 18:23:47 -07:00
Linus Torvalds
ab33eb494c x86: remove __put_user_asm() infrastructure
The last user was removed by commit 4b842e4e25 ("x86: get rid of small
constant size cases in raw_copy_{to,from}_user()").  Get rid of the
left-overs before somebody tries to use it again.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-03-31 18:11:18 -07:00
Linus Torvalds
29d9f30d4c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from David Miller:
 "Highlights:

   1) Fix the iwlwifi regression, from Johannes Berg.

   2) Support BSS coloring and 802.11 encapsulation offloading in
      hardware, from John Crispin.

   3) Fix some potential Spectre issues in qtnfmac, from Sergey
      Matyukevich.

   4) Add TTL decrement action to openvswitch, from Matteo Croce.

   5) Allow paralleization through flow_action setup by not taking the
      RTNL mutex, from Vlad Buslov.

   6) A lot of zero-length array to flexible-array conversions, from
      Gustavo A. R. Silva.

   7) Align XDP statistics names across several drivers for consistency,
      from Lorenzo Bianconi.

   8) Add various pieces of infrastructure for offloading conntrack, and
      make use of it in mlx5 driver, from Paul Blakey.

   9) Allow using listening sockets in BPF sockmap, from Jakub Sitnicki.

  10) Lots of parallelization improvements during configuration changes
      in mlxsw driver, from Ido Schimmel.

  11) Add support to devlink for generic packet traps, which report
      packets dropped during ACL processing. And use them in mlxsw
      driver. From Jiri Pirko.

  12) Support bcmgenet on ACPI, from Jeremy Linton.

  13) Make BPF compatible with RT, from Thomas Gleixnet, Alexei
      Starovoitov, and your's truly.

  14) Support XDP meta-data in virtio_net, from Yuya Kusakabe.

  15) Fix sysfs permissions when network devices change namespaces, from
      Christian Brauner.

  16) Add a flags element to ethtool_ops so that drivers can more simply
      indicate which coalescing parameters they actually support, and
      therefore the generic layer can validate the user's ethtool
      request. Use this in all drivers, from Jakub Kicinski.

  17) Offload FIFO qdisc in mlxsw, from Petr Machata.

  18) Support UDP sockets in sockmap, from Lorenz Bauer.

  19) Fix stretch ACK bugs in several TCP congestion control modules,
      from Pengcheng Yang.

  20) Support virtual functiosn in octeontx2 driver, from Tomasz
      Duszynski.

  21) Add region operations for devlink and use it in ice driver to dump
      NVM contents, from Jacob Keller.

  22) Add support for hw offload of MACSEC, from Antoine Tenart.

  23) Add support for BPF programs that can be attached to LSM hooks,
      from KP Singh.

  24) Support for multiple paths, path managers, and counters in MPTCP.
      From Peter Krystad, Paolo Abeni, Florian Westphal, Davide Caratti,
      and others.

  25) More progress on adding the netlink interface to ethtool, from
      Michal Kubecek"

* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2121 commits)
  net: ipv6: rpl_iptunnel: Fix potential memory leak in rpl_do_srh_inline
  cxgb4/chcr: nic-tls stats in ethtool
  net: dsa: fix oops while probing Marvell DSA switches
  net/bpfilter: remove superfluous testing message
  net: macb: Fix handling of fixed-link node
  net: dsa: ksz: Select KSZ protocol tag
  netdevsim: dev: Fix memory leak in nsim_dev_take_snapshot_write
  net: stmmac: add EHL 2.5Gbps PCI info and PCI ID
  net: stmmac: add EHL PSE0 & PSE1 1Gbps PCI info and PCI ID
  net: stmmac: create dwmac-intel.c to contain all Intel platform
  net: dsa: bcm_sf2: Support specifying VLAN tag egress rule
  net: dsa: bcm_sf2: Add support for matching VLAN TCI
  net: dsa: bcm_sf2: Move writing of CFP_DATA(5) into slicing functions
  net: dsa: bcm_sf2: Check earlier for FLOW_EXT and FLOW_MAC_EXT
  net: dsa: bcm_sf2: Disable learning for ASP port
  net: dsa: b53: Deny enslaving port 7 for 7278 into a bridge
  net: dsa: b53: Prevent tagged VLAN on port 7 for 7278
  net: dsa: b53: Restore VLAN entries upon (re)configuration
  net: dsa: bcm_sf2: Fix overflow checks
  hv_netvsc: Remove unnecessary round_up for recv_completion_cnt
  ...
2020-03-31 17:29:33 -07:00
Linus Torvalds
56a451b780 Bug fixes for a few printing issues, link status detection bug on AMD
hardware, and a DMA address issue with ntb_perf.  Also, large series of
 AMD NTB patches.
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Merge tag 'ntb-5.7' of git://github.com/jonmason/ntb

Pull NTB updates from Jon Mason:
 "Bug fixes for a few printing issues, link status detection bug on AMD
  hardware, and a DMA address issue with ntb_perf.

  Also, large series of AMD NTB patches"

* tag 'ntb-5.7' of git://github.com/jonmason/ntb: (21 commits)
  NTB: add pci shutdown handler for AMD NTB
  NTB: send DB event when driver is loaded or un-loaded
  NTB: remove redundant setting of DB valid mask
  NTB: return link up status correctly for PRI and SEC
  NTB: add helper functions to set and clear sideinfo
  NTB: move ntb_ctrl handling to init and deinit
  NTB: handle link up, D0 and D3 events correctly
  NTB: handle link down event correctly
  NTB: remove handling of peer_sta from amd_link_is_up
  NTB: set peer_sta within event handler itself
  NTB: return the side info status from amd_poll_link
  NTB: define a new function to get link status
  NTB: Enable link up and down event notification
  NTB: clear interrupt status register
  NTB: Fix access to link status and control register
  MAINTAINERS: update maintainer list for AMD NTB driver
  NTB: ntb_transport: Use scnprintf() for avoiding potential buffer overflow
  ntb_hw_switchtec: Fix ntb_mw_clear_trans error if size == 0
  ntb_tool: Fix printk format
  NTB: ntb_perf: Fix address err in perf_copy_chunk
  ...
2020-03-31 16:50:25 -07:00
Linus Torvalds
dba43fc4ba platform-drivers-x86 for v5.7-1
* Fix for improper handling of fan_boost_mode in sysfs for ASUS laptops.
 * On newer ASUS laptops the 1st battery is named differently, here is a fix.
 * Fix Lex 2I385SW to allow both network cards to be used.
 * The power integrated circuit driver for Surface 3 has been added.
 * Refactor and clean up of Intel PMC driver and enable it on Intel Jasper Lake.
 * Clean up of Dell RBU driver.
 * Big update for Intel Speed Select technology support tool and driver.
 
 The following is an automated git shortlog grouped by driver:
 
 asus-wmi:
  -  Support laptops where the first battery is named BATT
  -  Fix return value of fan_boost_mode_store
 
 dell_rbu:
  -  Unify format of the printed messages
  -  Use max_t() to get rid of casting
  -  Simplify cleanup code in create_packet()
  -  don't open code list_for_each_entry*()
  -  Use sysfs_create_group() API
 
 GPD pocket fan:
  -  Fix error message when temp-limits are out of range
 
 i2c-multi-instantiate:
  -  Replace zero-length array with flexible-array member
 
 intel-hid:
  -  Move MODULE_DEVICE_TABLE() closer to the table
 
 intel_pmc_core:
  -  Make pmc_core_substate_res_show() generic
  -  Make pmc_core_lpm_display() generic for platforms that support sub-states
  -  Add slp_s0_offset attribute back to tgl_reg_map
  -  Remove duplicate 'if' to create debugfs entry
  -  Relocate pmc_core_*_display() to outside of CONFIG_DEBUG_FS
  -  Add debugfs support to access live status registers
  -  Dump low power status registers on an S0ix.y failure
  -  Add an additional parameter to pmc_core_lpm_display()
  -  Remove slp_s0 attributes from tgl_reg_map
  -  Refactor the driver by removing redundant code
  -  Add debugfs entry for low power mode status registers
  -  Add debugfs entry to access sub-state residencies
  -  Add Atom based Jasper Lake (JSL) platform support
 
 intel-vbtn:
  -  Move MODULE_DEVICE_TABLE() closer to the table
 
 ISST:
  -  Fix wrong unregister type
 
 PDx86:
  -  Kconfig: Fix a typo
  -  Kconfig: Group modules by companies and functions
  -  MAINTAINERS: Sort entries in database for PDx86
  -  Makefile: Group modules by companies and functions
 
 platform/x86/intel-uncore-freq:
  -  Add release callback
  -  Fix static checker issue and potential race condition
 
 pmc_atom:
  -  Add Lex 2I385SW to critclk_systems DMI table
 
 sony-laptop:
  -  Use scnprintf() for avoiding potential buffer overflow
 
 surface3_power:
  -  Fix always true condition in mshw0011_space_handler()
  -  Fix Kconfig section ordering
  -  Add missed headers
  -  Reformat GUID assignment
  -  Drop useless macro ACPI_PTR()
  -  Prefix POLL_INTERVAL with SURFACE_3
  -  Simplify mshw0011_adp_psr() to one liner
  -  Use dev_err() instead of pr_err()
  -  Drop unused structure definition
  -  MSHW0011 rev-eng implementation
 
 tools/power/x86/intel-speed-select:
  -  Fix a typo in error message
  -  Update version
  -  Avoid duplicate Package strings for json
  -  Add display for enabled cpus count
  -  Print friendly warning for bad command line
  -  Fix avx options for turbo-freq feature
  -  Improve CLX commands
  -  Show error for invalid CPUs in the options
  -  Improve core-power result and error display
  -  Kernel interface error handling
  -  Improve error display for turbo-freq feature
  -  Improve error display for base-freq feature
  -  Improve output of perf-profile commands
  -  Enhance help for core-power assoc
  -  Display error for invalid priority type
  -  Check feature status first
  -  Improve error display for perf-profile feature
  -  Add an API for error/information print
  -  Enhance --info option
  -  Enhance help
  -  Helpful warning for missing kernel interface
  -  Store topology information
  -  Max CPU count calculation when CPU0 is offline
  -  Special handling for CPU 0 online/offline
  -  Use more verbiage for clos information
  -  Enhance core-power info command
  -  Make target CPU optional for core-power info
  -  Warn for invalid package id
  -  Fix last cpu number
  -  Fix mailbox usage for CLOS_PM_QOS_CONFIG
  -  Avoid duplicate names for json parsing
  -  Fix display for turbo-freq auto mode
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Merge tag 'platform-drivers-x86-v5.7-1' of git://git.infradead.org/linux-platform-drivers-x86

Pull x86 platform driver updates from Andy Shevchenko:

 - Fix for improper handling of fan_boost_mode in sysfs for ASUS
   laptops.

 - On newer ASUS laptops the 1st battery is named differently, here is a
   fix.

 - Fix Lex 2I385SW to allow both network cards to be used.

 - The power integrated circuit driver for Surface 3 has been added.

 - Refactor and clean up of Intel PMC driver and enable it on Intel
   Jasper Lake.

 - Clean up of Dell RBU driver.

 - Big update for Intel Speed Select technology support tool and driver.

* tag 'platform-drivers-x86-v5.7-1' of git://git.infradead.org/linux-platform-drivers-x86: (75 commits)
  platform/x86: surface3_power: Fix always true condition in mshw0011_space_handler()
  platform/x86: surface3_power: Fix Kconfig section ordering
  platform/x86: surface3_power: Add missed headers
  platform/x86: surface3_power: Reformat GUID assignment
  platform/x86: surface3_power: Drop useless macro ACPI_PTR()
  platform/x86: surface3_power: Prefix POLL_INTERVAL with SURFACE_3
  platform/x86: surface3_power: Simplify mshw0011_adp_psr() to one liner
  platform/x86: surface3_power: Use dev_err() instead of pr_err()
  platform/x86: surface3_power: Drop unused structure definition
  platform/x86: surface3_power: MSHW0011 rev-eng implementation
  platform/x86: intel_pmc_core: Make pmc_core_substate_res_show() generic
  platform/x86: intel_pmc_core: Make pmc_core_lpm_display() generic for platforms that support sub-states
  tools/power/x86/intel-speed-select: Fix a typo in error message
  tools/power/x86/intel-speed-select: Update version
  tools/power/x86/intel-speed-select: Avoid duplicate Package strings for json
  tools/power/x86/intel-speed-select: Add display for enabled cpus count
  tools/power/x86/intel-speed-select: Print friendly warning for bad command line
  tools/power/x86/intel-speed-select: Fix avx options for turbo-freq feature
  tools/power/x86/intel-speed-select: Improve CLX commands
  tools/power/x86/intel-speed-select: Show error for invalid CPUs in the options
  ...
2020-03-31 16:43:40 -07:00
Linus Torvalds
1f944f976d TTY/Serial patches for 5.7-rc1
Here is the big set of TTY / Serial patches for 5.7-rc1
 
 Lots of console fixups and reworking in here, serial core tweaks
 (doesn't that ever get old, why are we still creating new serial
 devices?), serial driver updates, line-protocol driver updates, and some
 vt cleanups and fixes included in here as well.
 
 All have been in linux-next with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty/serial updates from Greg KH:
 "Here is the big set of TTY / Serial patches for 5.7-rc1

  Lots of console fixups and reworking in here, serial core tweaks
  (doesn't that ever get old, why are we still creating new serial
  devices?), serial driver updates, line-protocol driver updates, and
  some vt cleanups and fixes included in here as well.

  All have been in linux-next with no reported issues"

* tag 'tty-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (161 commits)
  serial: 8250: Optimize irq enable after console write
  serial: 8250: Fix rs485 delay after console write
  vt: vt_ioctl: fix use-after-free in vt_in_use()
  vt: vt_ioctl: fix VT_DISALLOCATE freeing in-use virtual console
  tty: serial: make SERIAL_SPRD depend on COMMON_CLK
  tty: serial: fsl_lpuart: fix return value checking
  tty: serial: fsl_lpuart: move dma_request_chan()
  ARM: dts: tango4: Make /serial compatible with ns16550a
  ARM: dts: mmp*: Make the serial ports compatible with xscale-uart
  ARM: dts: mmp*: Fix serial port names
  ARM: dts: mmp2-brownstone: Don't redeclare phandle references
  ARM: dts: pxa*: Make the serial ports compatible with xscale-uart
  ARM: dts: pxa*: Fix serial port names
  ARM: dts: pxa*: Don't redeclare phandle references
  serial: omap: drop unused dt-bindings header
  serial: 8250: 8250_omap: Add DMA support for UARTs on K3 SoCs
  serial: 8250: 8250_omap: Work around errata causing spurious IRQs with DMA
  serial: 8250: 8250_omap: Extend driver data to pass FIFO trigger info
  serial: 8250: 8250_omap: Move locking out from __dma_rx_do_complete()
  serial: 8250: 8250_omap: Account for data in flight during DMA teardown
  ...
2020-03-31 16:18:55 -07:00
Linus Torvalds
dfabb077d6 MMC core:
- Add support for host software queue for (e)MMC/SD
  - Throttle polling rate for CMD6
  - Update CMD13 busy condition check for CMD6 commands
  - Improve busy detect polling for erase/trim/discard/HPI
  - Fixup support for HW busy detection for HPI commands
  - Re-work and improve support for eMMC sanitize commands
 
 MMC host:
  - mmci: Add support for sdmmc variant revision 2.0
  - mmci_sdmmc: Improve support for busyend detection
  - mmci_sdmmc: Fixup support for signal voltage switch
  - mmci_sdmmc: Add support for tuning with delay block
  - mtk-sd: Fix another SDIO irq issue
  - sdhci: Disable native card detect when GPIO based type exist
  - sdhci: Add option to defer request completion
  - sdhci_am654: Add support to set a tap value per speed mode
  - sdhci-esdhc-imx: Add support for i.MX8MM based variant
  - sdhci-esdhc-imx: Fixup support for standard tuning on i.MX8 usdhc
  - sdhci-esdhc-imx: Optimize for strobe/clock dll settings
  - sdhci-esdhc-imx: Fixup support for system and runtime suspend/resume
  - sdhci-iproc: Update regulator/bus-voltage management for bcm2711
  - sdhci-msm: Prevent clock gating with PWRSAVE_DLL on broken variants
  - sdhci-msm: Fix management of CQE during SDHCI reset
  - sdhci-of-arasan: Add support for auto tuning on ZynqMP based platforms
  - sdhci-omap: Add support for system suspend/resume
  - sdhci-sprd: Add support for HW busy detection
  - sdhci-sprd: Enable support host software queue
  - sdhci-tegra: Add support for HW busy detection
  - tmio/renesas_sdhi: Enforce retune after runtime suspend
  - renesas_sdhi: Use manual tap correction for HS400 on some variants
  - renesas_sdhi: Add support for manual correction of tap values for tunings
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Merge tag 'mmc-v5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

Pull MMC updates from Ulf Hansson:
 "MMC core:
   - Add support for host software queue for (e)MMC/SD
   - Throttle polling rate for CMD6
   - Update CMD13 busy condition check for CMD6 commands
   - Improve busy detect polling for erase/trim/discard/HPI
   - Fixup support for HW busy detection for HPI commands
   - Re-work and improve support for eMMC sanitize commands

  MMC host:
   - mmci:
       * Add support for sdmmc variant revision 2.0
   - mmci_sdmmc:
       * Improve support for busyend detection
       * Fixup support for signal voltage switch
       * Add support for tuning with delay block
   - mtk-sd:
       * Fix another SDIO irq issue
   - sdhci:
       * Disable native card detect when GPIO based type exist
   - sdhci:
       * Add option to defer request completion
   - sdhci_am654:
       * Add support to set a tap value per speed mode
   - sdhci-esdhc-imx:
       * Add support for i.MX8MM based variant
       * Fixup support for standard tuning on i.MX8 usdhc
       * Optimize for strobe/clock dll settings
       * Fixup support for system and runtime suspend/resume
   - sdhci-iproc:
       * Update regulator/bus-voltage management for bcm2711
   - sdhci-msm:
       * Prevent clock gating with PWRSAVE_DLL on broken variants
       * Fix management of CQE during SDHCI reset
   - sdhci-of-arasan:
       * Add support for auto tuning on ZynqMP based platforms
   - sdhci-omap:
       * Add support for system suspend/resume
   - sdhci-sprd:
       * Add support for HW busy detection
       * Enable support host software queue
   - sdhci-tegra:
       * Add support for HW busy detection
   - tmio/renesas_sdhi:
       * Enforce retune after runtime suspend
   - renesas_sdhi:
       * Use manual tap correction for HS400 on some variants
       * Add support for manual correction of tap values for tunings"

* tag 'mmc-v5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (86 commits)
  mmc: cavium-octeon: remove nonsense variable coercion
  mmc: mediatek: fix SDIO irq issue
  mmc: mmci_sdmmc: Fix clear busyd0end irq flag
  dt-bindings: mmc: Fix node name in an example
  mmc: core: Re-work the code for eMMC sanitize
  mmc: sdhci: use FIELD_GET for preset value bit masks
  mmc: sdhci-of-at91: Display clock changes for debug purpose only
  mmc: sdhci: iproc: Add custom set_power() callback for bcm2711
  mmc: sdhci: am654: Use sdhci_set_power_and_voltage()
  mmc: sdhci: at91: Use sdhci_set_power_and_voltage()
  mmc: sdhci: milbeaut: Use sdhci_set_power_and_voltage()
  mmc: sdhci: arasan: Use sdhci_set_power_and_voltage()
  mmc: sdhci: Introduce sdhci_set_power_and_bus_voltage()
  mmc: vub300: Use scnprintf() for avoiding potential buffer overflow
  dt-bindings: mmc: synopsys-dw-mshc: fix clock-freq-min-max in example
  sdhci: tegra: Enable MMC_CAP_WAIT_WHILE_BUSY host capability
  sdhci: tegra: Implement Tegra specific set_timeout callback
  mmc: sdhci-omap: Add Support for Suspend/Resume
  mmc: renesas_sdhi: simplify execute_tuning
  mmc: renesas_sdhi: Use BITS_PER_LONG helper
  ...
2020-03-31 16:13:09 -07:00
Linus Torvalds
5b67fbfc32 Kbuild updates for v5.7
[Build system]
 
  - add CONFIG_UNUSED_KSYMS_WHITELIST, which will be useful to define
    a fixed set of export symbols for Generic Kernel Image (GKI)
 
  - allow to run 'make dt_binding_check' without .config
 
  - use full schema for checking DT examples in *.yaml files
 
  - make modpost fail for missing MODULE_IMPORT_NS(), which makes more
    sense because we know the produced modules are never loadable
 
  - Remove unused 'AS' variable
 
 [Kconfig]
 
  - sanitize DEFCONFIG_LIST, and remove ARCH_DEFCONFIG from Kconfig files
 
  - relax the 'imply' behavior so that symbols implied by y can become m
 
  - make 'imply' obey 'depends on' in order to make 'imply' really weak
 
 [Misc]
 
  - add documentation on building the kernel with Clang/LLVM
 
  - revive __HAVE_ARCH_STRLEN for 32bit sparc to use optimized strlen()
 
  - fix warning from deb-pkg builds when CONFIG_DEBUG_INFO=n
 
  - various script and Makefile cleanups
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Merge tag 'kbuild-v5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild updates from Masahiro Yamada:
 "Build system:

   - add CONFIG_UNUSED_KSYMS_WHITELIST, which will be useful to define a
     fixed set of export symbols for Generic Kernel Image (GKI)

   - allow to run 'make dt_binding_check' without .config

   - use full schema for checking DT examples in *.yaml files

   - make modpost fail for missing MODULE_IMPORT_NS(), which makes more
     sense because we know the produced modules are never loadable

   - Remove unused 'AS' variable

  Kconfig:

   - sanitize DEFCONFIG_LIST, and remove ARCH_DEFCONFIG from Kconfig
     files

   - relax the 'imply' behavior so that symbols implied by 'y' can
     become 'm'

   - make 'imply' obey 'depends on' in order to make 'imply' really weak

  Misc:

   - add documentation on building the kernel with Clang/LLVM

   - revive __HAVE_ARCH_STRLEN for 32bit sparc to use optimized strlen()

   - fix warning from deb-pkg builds when CONFIG_DEBUG_INFO=n

   - various script and Makefile cleanups"

* tag 'kbuild-v5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (34 commits)
  Makefile: Update kselftest help information
  kbuild: deb-pkg: fix warning when CONFIG_DEBUG_INFO is unset
  kbuild: add outputmakefile to no-dot-config-targets
  kbuild: remove AS variable
  net: wan: wanxl: refactor the firmware rebuild rule
  net: wan: wanxl: use $(M68KCC) instead of $(M68KAS) for rebuilding firmware
  net: wan: wanxl: use allow to pass CROSS_COMPILE_M68k for rebuilding firmware
  kbuild: add comment about grouped target
  kbuild: add -Wall to KBUILD_HOSTCXXFLAGS
  kconfig: remove unused variable in qconf.cc
  sparc: revive __HAVE_ARCH_STRLEN for 32bit sparc
  kbuild: refactor Makefile.dtbinst more
  kbuild: compute the dtbs_install destination more simply
  Makefile: disallow data races on gcc-10 as well
  kconfig: make 'imply' obey the direct dependency
  kconfig: allow symbols implied by y to become m
  net: drop_monitor: use IS_REACHABLE() to guard net_dm_hw_report()
  modpost: return error if module is missing ns imports and MODULE_ALLOW_MISSING_NAMESPACE_IMPORTS=n
  modpost: rework and consolidate logging interface
  kbuild: allow to run dt_binding_check without kernel configuration
  ...
2020-03-31 16:03:39 -07:00
Linus Torvalds
a16298439b Merge branch 'next-general' of git://git.kernel.org:/pub/scm/linux/kernel/git/jmorris/linux-security
Pull security subsystem updates from James Morris:
 "Two minor updates for the core security subsystem:

   - kernel-doc warning fixes from Randy Dunlap

   - header cleanup from YueHaibing"

* 'next-general' of git://git.kernel.org:/pub/scm/linux/kernel/git/jmorris/linux-security:
  security: remove duplicated include from security.h
  security: <linux/lsm_hooks.h>: fix all kernel-doc warnings
2020-03-31 15:49:51 -07:00
Neil Armstrong
28d5ee04d9 dt-bindings: usb: dwc2: fix bindings for amlogic, meson-gxbb-usb
The amlogic,meson-gxbb-usb compatible needs snps,dwc2 aswell like other
Amlogic SoC.

Fixes: f3ca745d8a ("dt-bindings: usb: Convert DWC2 bindings to json-schema")
Reviewed-by: Benjamin Gaignard <benjamin.gaignard@st.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Rob Herring <robh@kernel.org>
2020-03-31 16:08:38 -06:00
Linus Torvalds
b3aa112d57 selinux/stable-5.7 PR 20200330
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Merge tag 'selinux-pr-20200330' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux

Pull SELinux updates from Paul Moore:
 "We've got twenty SELinux patches for the v5.7 merge window, the
  highlights are below:

   - Deprecate setting /sys/fs/selinux/checkreqprot to 1.

     This flag was originally created to deal with legacy userspace and
     the READ_IMPLIES_EXEC personality flag. We changed the default from
     1 to 0 back in Linux v4.4 and now we are taking the next step of
     deprecating it, at some point in the future we will take the final
     step of rejecting 1.

   - Allow kernfs symlinks to inherit the SELinux label of the parent
     directory. In order to preserve backwards compatibility this is
     protected by the genfs_seclabel_symlinks SELinux policy capability.

   - Optimize how we store filename transitions in the kernel, resulting
     in some significant improvements to policy load times.

   - Do a better job calculating our internal hash table sizes which
     resulted in additional policy load improvements and likely general
     SELinux performance improvements as well.

   - Remove the unused initial SIDs (labels) and improve how we handle
     initial SIDs.

   - Enable per-file labeling for the bpf filesystem.

   - Ensure that we properly label NFS v4.2 filesystems to avoid a
     temporary unlabeled condition.

   - Add some missing XFS quota command types to the SELinux quota
     access controls.

   - Fix a problem where we were not updating the seq_file position
     index correctly in selinuxfs.

   - We consolidate some duplicated code into helper functions.

   - A number of list to array conversions.

   - Update Stephen Smalley's email address in MAINTAINERS"

* tag 'selinux-pr-20200330' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
  selinux: clean up indentation issue with assignment statement
  NFS: Ensure security label is set for root inode
  MAINTAINERS: Update my email address
  selinux: avtab_init() and cond_policydb_init() return void
  selinux: clean up error path in policydb_init()
  selinux: remove unused initial SIDs and improve handling
  selinux: reduce the use of hard-coded hash sizes
  selinux: Add xfs quota command types
  selinux: optimize storage of filename transitions
  selinux: factor out loop body from filename_trans_read()
  security: selinux: allow per-file labeling for bpffs
  selinux: generalize evaluate_cond_node()
  selinux: convert cond_expr to array
  selinux: convert cond_av_list to array
  selinux: convert cond_list to array
  selinux: sel_avc_get_stat_idx should increase position index
  selinux: allow kernfs symlinks to inherit parent directory context
  selinux: simplify evaluate_cond_node()
  Documentation,selinux: deprecate setting checkreqprot to 1
  selinux: move status variables out of selinux_ss
2020-03-31 15:07:55 -07:00
Masahiro Yamada
39eca91c7c dt-bindings: uniphier-system-bus: fix warning in the example
Fix the following warning from 'make dt_binding_check'.

Warning (unit_address_vs_reg): /example-0/system-bus: node has a reg or ranges property, but no unit name

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Rob Herring <robh@kernel.org>
2020-03-31 16:07:48 -06:00
Martin Blumenstingl
33b0cb370f dt-bindings: display: meson-vpu: fix indentation of reg-names' "items"
Use two spaces for indentation instead of one to be consistent with the
rest of the file. No functional changes.

Fixes: 6b9ebf1e0e ("dt-bindings: display: amlogic, meson-vpu: convert to yaml")
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
2020-03-31 16:07:15 -06:00
Rob Herring
b02a728ff3 dt-bindings: iio: Fix adi, ltc2983 uint64-matrix schema constraints
'minItems' and 'maxItems' apply at the same level as 'items' schemas as
the keywords apply to arrays. What's currently defined is a 3
dimensional matrix with the outer size being undefined. To fix this,
minItems/maxItems needs to be moved up a level.

With this fixed, the example fails validation. For matrix types, the dts
syntax must use brackets (<>) matching the schema definition. In this
case, the inner array size is 2 elements, so let's add the correct
bracketing.

Fixes: 3986a14870 ("dt-bindings: iio: Add ltc2983 documentation")
Cc: "Nuno Sá" <nuno.sa@analog.com>
Cc: Jonathan Cameron <jic23@kernel.org>
Cc: Hartmut Knaack <knaack.h@gmx.de>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Cc: linux-iio@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Nuno Sá <nuno.sa@analog.com>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Rob Herring <robh@kernel.org>
2020-03-31 16:06:04 -06:00
Ulf Hansson
8c0245602c dt-bindings: power: Fix example for power-domain
The change that converted the domain-idle-states DT bindings to the
json-schema, forgot to update the corresponding example for the
power-domain binding. Let's fix it.

Fixes: 3261227d13 ("dt-bindings: power: Convert domain-idle-states bindings to json-schema")
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rob Herring <robh@kernel.org>
2020-03-31 16:05:34 -06:00
Ulf Hansson
b203bb5f62 dt-bindings: arm: Add some constraints for PSCI nodes
There's no point allowing anything else but "psci" for the corresponding
nodename of the PSCI node, so let's make this an explicit requirement.

Moreover, let's also prevent additional properties, which also allows a
better verification of the "patternProperties" bindings for subnodes.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rob Herring <robh@kernel.org>
2020-03-31 16:05:18 -06:00
Linus Torvalds
674d85eb2d audit/stable-5.7 PR 20200330
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Merge tag 'audit-pr-20200330' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit

Pull audit updates from Paul Moore:
 "We've got two audit patches for the v5.7 merge window with a stellar
  14 lines changed between the two patches. The patch descriptions are
  far more lengthy than the patches themselves, which is a very good
  thing for patches this size IMHO. The patches pass our test suites and
  a quick summary is below:

   - Stop logging inode information when updating an audit file watch.

     Since we are not changing the inode, or the fact that we are
     watching the associated file, the inode information is just noise
     that we can do without.

   - Fix a problem where mandatory audit records were missing their
     accompanying audit records (e.g. SYSCALL records were missing).

     The missing records often meant that we didn't have the necessary
     context to understand what was going on when the event occurred"

* tag 'audit-pr-20200330' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit:
  audit: trigger accompanying records when no rules present
  audit: CONFIG_CHANGE don't log internal bookkeeping as an event
2020-03-31 15:04:17 -07:00
Frank Rowand
1adc86798f of: some unittest overlays not untracked
kernel test robot reported "WARNING: held lock freed!" triggered by
unittest_gpio_remove(), which should not have been called because
the related gpio overlay was not tracked.  Another overlay that
was tracked had previously used the same id as the gpio overlay
but had not been untracked when the overlay was removed.  Thus the
clean up function of_unittest_destroy_tracked_overlays() incorrectly
attempted to remove the reused overlay id.

Patch contents:

  - Create tracking related helper functions
  - Change BUG() to WARN_ON() for overlay id related issues
  - Add some additional error checking for valid overlay id values
  - Add the missing overlay untrack
  - update comment on expectation that overlay ids are assigned in
    sequence

Fixes: 492a22aceb ("of: unittest: overlay: Keep track of created overlays")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Frank Rowand <frank.rowand@sony.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Rob Herring <robh@kernel.org>
2020-03-31 15:57:58 -06:00
Frank Rowand
fb227f597d of: gpio unittest kfree() wrong object
kernel test robot reported "WARNING: held lock freed!" triggered by
unittest_gpio_remove().  unittest_gpio_remove() was unexpectedly
called due to an error in overlay tracking.  The remove had not
been tested because the gpio overlay removal tests have not been
implemented.

kfree() gdev instead of pdev.

Fixes: f4056e705b ("of: unittest: add overlay gpio test to catch gpio hog problem")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Frank Rowand <frank.rowand@sony.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Rob Herring <robh@kernel.org>
2020-03-31 15:57:39 -06:00
Johan Jonker
978e9c3ba0 dt-bindings: phy: convert phy-rockchip-inno-usb2 bindings to yaml
Current dts files for Rockchip with 'usb2-phy' subnodes
are manually verified. In order to automate this process
phy-rockchip-inno-usb2.txt has to be converted to yaml.

Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Signed-off-by: Rob Herring <robh@kernel.org>
2020-03-31 15:48:45 -06:00
Aneesh Kumar K.V
338f6dac85 libnvdimm: Update persistence domain value for of_pmem and papr_scm device
Currently, kernel shows the below values
	"persistence_domain":"cpu_cache"
	"persistence_domain":"memory_controller"
	"persistence_domain":"unknown"

"cpu_cache" indicates no extra instructions is needed to ensure the persistence
of data in the pmem media on power failure.

"memory_controller" indicates cpu cache flush instructions are required to flush
the data. Platform provides mechanisms to automatically flush outstanding
write data from memory controler to pmem on system power loss.

Based on the above use memory_controller for non volatile regions on ppc64.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Link: https://lore.kernel.org/r/20200324034821.60869-1-aneesh.kumar@linux.ibm.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2020-03-31 14:42:28 -07:00
Linus Torvalds
645c248d6f various RDMA (smbdirect) fixes, addition of SMB3.1.1 POSIX support in readdir, 3 fixes for stable, and a fix for flock
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Merge tag '5.7-rc-smb3-fixes-part1' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs updates from Steve French:
 "First part of cifs/smb3 changes for merge window (others are still
  being tested). Various RDMA (smbdirect) fixes, addition of SMB3.1.1
  POSIX support in readdir, 3 fixes for stable, and a fix for flock.

  Summary:

  New feature:
   - SMB3.1.1 POSIX support in readdir

  Fixes:
   - various RDMA (smbdirect) fixes
   - fix for flock
   - fallocate fix
   - some improved mount warnings
   - two timestamp related fixes
   - reconnect fix
   - three fixes for stable"

* tag '5.7-rc-smb3-fixes-part1' of git://git.samba.org/sfrench/cifs-2.6: (28 commits)
  cifs: update internal module version number
  cifs: Allocate encryption header through kmalloc
  cifs: smbd: Check and extend sender credits in interrupt context
  cifs: smbd: Calculate the correct maximum packet size for segmented SMBDirect send/receive
  smb3: use SMB2_SIGNATURE_SIZE define
  CIFS: Fix bug which the return value by asynchronous read is error
  CIFS: check new file size when extending file by fallocate
  SMB3: Minor cleanup of protocol definitions
  SMB3: Additional compression structures
  SMB3: Add new compression flags
  cifs: smb2pdu.h: Replace zero-length array with flexible-array member
  cifs: clear PF_MEMALLOC before exiting demultiplex thread
  cifs: cifspdu.h: Replace zero-length array with flexible-array member
  CIFS: Warn less noisily on default mount
  fs/cifs: fix gcc warning in sid_to_id
  cifs: allow unlock flock and OFD lock across fork
  cifs: do d_move in rename
  cifs: add SMB2_open() arg to return POSIX data
  cifs: plumb smb2 POSIX dir enumeration
  cifs: add smb2 POSIX info level
  ...
2020-03-31 14:30:10 -07:00
Geert Uytterhoeven
384d00fae8 dt-bindings: serial: sh-sci: Convert to json-schema
Convert the Renesas Serial Communication Interface ((H)SCI(F)(A|B))
Device Tree binding documentation to json-schema.

Split the bindings in 5 files, one per major type, to ease expressing
constraints.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Rob Herring <robh@kernel.org>
2020-03-31 15:28:56 -06:00
Geert Uytterhoeven
a5427e4e38 dt-bindings: serial: Document serialN aliases
Document the format of aliases referring to UARTs.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Rob Herring <robh@kernel.org>
2020-03-31 15:25:44 -06:00
Linus Torvalds
018d21f5c5 We've got a lot of patches (39) for this merge window. Most of these patches
are related to corruption that occurs when journals are replayed.
 For example:
 
    1. A node fails while writing to the file system.
    2. Other nodes use the metadata that was once used by the failed node.
    3. When the node returns to the cluster, its journal is replayed,
       but the older metadata blocks overwrite the changes from step 2.
 
 - Fixed the recovery sequence to prevent corruption during journal replay.
 - Many bug fixes found during recovery testing.
 - New improved file system withdraw sequence.
 - Fixed how resource group buffers are managed.
 - Fixed how metadata revokes are tracked and written.
 - Improve processing of IO errors hit by daemons like logd and quotad.
 - Improved error checking in metadata writes.
 - Fixed how qadata quota data structures are managed.
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Merge tag 'gfs2-for-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2

Pull gfs2 updates from Bob Peterson:
 "We've got a lot of patches (39) for this merge window. Most of these
  patches are related to corruption that occurs when journals are
  replayed. For example:

   1. A node fails while writing to the file system.
   2. Other nodes use the metadata that was once used by the failed
      node.
   3. When the node returns to the cluster, its journal is replayed, but
      the older metadata blocks overwrite the changes from step 2.

  Summary:

   - Fixed the recovery sequence to prevent corruption during journal
     replay.

   - Many bug fixes found during recovery testing.

   - New improved file system withdraw sequence.

   - Fixed how resource group buffers are managed.

   - Fixed how metadata revokes are tracked and written.

   - Improve processing of IO errors hit by daemons like logd and
     quotad.

   - Improved error checking in metadata writes.

   - Fixed how qadata quota data structures are managed"

* tag 'gfs2-for-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2: (39 commits)
  gfs2: Fix oversight in gfs2_ail1_flush
  gfs2: change from write to read lock for sd_log_flush_lock in journal replay
  gfs2: instrumentation wrt ail1 stuck
  gfs2: don't lock sd_log_flush_lock in try_rgrp_unlink
  gfs2: Remove unnecessary gfs2_qa_{get,put} pairs
  gfs2: Split gfs2_rsqa_delete into gfs2_rs_delete and gfs2_qa_put
  gfs2: Change inode qa_data to allow multiple users
  gfs2: eliminate gfs2_rsqa_alloc in favor of gfs2_qa_alloc
  gfs2: Switch to list_{first,last}_entry
  gfs2: Clean up inode initialization and teardown
  gfs2: Additional information when gfs2_ail1_flush withdraws
  gfs2: leaf_dealloc needs to allocate one more revoke
  gfs2: allow journal replay to hold sd_log_flush_lock
  gfs2: don't allow releasepage to free bd still used for revokes
  gfs2: flesh out delayed withdraw for gfs2_log_flush
  gfs2: Do proper error checking for go_sync family of glops functions
  gfs2: Don't demote a glock until its revokes are written
  gfs2: drain the ail2 list after io errors
  gfs2: Withdraw in gfs2_ail1_flush if write_cache_pages fails
  gfs2: Do log_flush in gfs2_ail_empty_gl even if ail list is empty
  ...
2020-03-31 14:16:03 -07:00
Santosh Sivaraj
1f77679962 tools/test/nvdimm: Fix out of tree build
Out of tree build using

   make M=tools/test/nvdimm O=/tmp/build -C /tmp/build

fails with the following error

make: Entering directory '/tmp/build'
  CC [M]  tools/testing/nvdimm/test/nfit.o
linux/tools/testing/nvdimm/test/nfit.c:19:10: fatal error: nd-core.h: No such file or directory
   19 | #include <nd-core.h>
      |          ^~~~~~~~~~~
compilation terminated.

That is because the kbuild file uses $(src) which points to
tools/testing/nvdimm, $(srctree) correctly points to root of the linux
source tree.

Reported-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Santosh Sivaraj <santosh@fossix.org>
Link: https://lore.kernel.org/r/20200114054051.4115790-1-santosh@fossix.org
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2020-03-31 14:12:32 -07:00
Rob Herring
27f747b123 dt-bindings: thermal: tsens: Set 'additionalProperties: false'
Ensure the node only contains the properties listed in the schema by
setting 'additionalProperties: false'. Doing this requires reworking the
interrupt properties schemas so that they are defined in the main
'properties' section.

Fixes: a877e768f6 ("dt-bindings: thermal: tsens: Convert over to a yaml schema")
Cc: Andy Gross <agross@kernel.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Amit Kucheria <amit.kucheria@linaro.org>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: linux-arm-msm@vger.kernel.org
Cc: linux-pm@vger.kernel.org
Cc: devicetree@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org>
2020-03-31 15:07:48 -06:00
Rob Herring
b9589def9f dt-bindings: thermal: tsens: Fix nvmem-cell-names schema
There's a typo 'nvmem-cells-names' in the schema which means the correct
'nvmem-cell-names' in the examples are not checked. The possible values
are wrong too both in that the 2nd entry is not specified correctly and the
values are just wrong based on the dts files in the kernel.

Fixes: a877e768f6 ("dt-bindings: thermal: tsens: Convert over to a yaml schema")
Cc: Andy Gross <agross@kernel.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Amit Kucheria <amit.kucheria@linaro.org>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: linux-arm-msm@vger.kernel.org
Cc: linux-pm@vger.kernel.org
Cc: devicetree@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Amit Kucheria <amit.kucheria@linaro.org>
2020-03-31 15:07:41 -06:00