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2018-02-02x86/power: Fix swsusp_arch_resume prototypeArnd Bergmann4-5/+4
The declaration for swsusp_arch_resume marks it as 'asmlinkage', but the definition in x86-32 does not, and it fails to include the header with the declaration. This leads to a warning when building with link-time-optimizations: kernel/power/power.h:108:23: error: type of 'swsusp_arch_resume' does not match original declaration [-Werror=lto-type-mismatch] extern asmlinkage int swsusp_arch_resume(void); ^ arch/x86/power/hibernate_32.c:148:0: note: 'swsusp_arch_resume' was previously declared here int swsusp_arch_resume(void) This moves the declaration into a globally visible header file and fixes up both x86 definitions to match it. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Len Brown <len.brown@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Nicolas Pitre <nico@linaro.org> Cc: linux-pm@vger.kernel.org Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Pavel Machek <pavel@ucw.cz> Cc: Bart Van Assche <bart.vanassche@wdc.com> Link: https://lkml.kernel.org/r/20180202145634.200291-2-arnd@arndb.de
2018-02-02x86/dumpstack: Avoid uninitlized variableArnd Bergmann1-1/+1
In some configurations, 'partial' does not get initialized, as shown by this gcc-8 warning: arch/x86/kernel/dumpstack.c: In function 'show_trace_log_lvl': arch/x86/kernel/dumpstack.c:156:4: error: 'partial' may be used uninitialized in this function [-Werror=maybe-uninitialized] show_regs_if_on_stack(&stack_info, regs, partial); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ This initializes it to false, to get the previous behavior in this case. Fixes: a9cdbe72c4e8 ("x86/dumpstack: Fix partial register dumps") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Andi Kleen <ak@linux.intel.com> Cc: Nicolas Pitre <nico@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Borislav Petkov <bpetkov@suse.de> Cc: Vlastimil Babka <vbabka@suse.cz> Link: https://lkml.kernel.org/r/20180202145634.200291-1-arnd@arndb.de
2018-01-31x86/kexec: Make kexec (mostly) work in 5-level paging modeKirill A. Shutemov1-0/+8
Currently kexec() will crash when switching into a 5-level paging enabled kernel. I missed that we need to change relocate_kernel() to set CR4.LA57 flag if the kernel has 5-level paging enabled. I avoided using #ifdef CONFIG_X86_5LEVEL here and inferred if we need to enable 5-level paging from previous CR4 value. This way the code is ready for boot-time switching between paging modes. With this patch applied, in addition to kexec 4-to-4 which always worked, we can kexec 4-to-5 and 5-to-5 - while 5-to-4 will need more work. Reported-by: Baoquan He <bhe@redhat.com> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Tested-by: Baoquan He <bhe@redhat.com> Cc: <stable@vger.kernel.org> # v4.14+ Cc: Borislav Petkov <bp@suse.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-mm@kvack.org Fixes: 77ef56e4f0fb ("x86: Enable 5-level paging support via CONFIG_X86_5LEVEL=y") Link: http://lkml.kernel.org/r/20180129110845.26633-1-kirill.shutemov@linux.intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-01-29btrfs: drop devid as device_list_add() argAnand Jain1-5/+3
As struct btrfs_disk_super is being passed, so it can get devid the same way its parent does. Signed-off-by: Anand Jain <anand.jain@oracle.com> Reviewed-by: Josef Bacik <jbacik@fb.com> Signed-off-by: David Sterba <dsterba@suse.com>
2018-01-29btrfs: get device pointer from device_list_add()Anand Jain1-16/+18
Instead of pointer to btrfs_fs_devices as an arg in device_list_add() better to get pointer to btrfs_device as return value, then we have both, pointer to btrfs_device and btrfs_fs_devices. btrfs_device is needed to handle reappearing missing device. Signed-off-by: Anand Jain <anand.jain@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com>
2018-01-29fs: handle inode->i_version more efficientlyJeff Layton2-56/+154
Since i_version is mostly treated as an opaque value, we can exploit that fact to avoid incrementing it when no one is watching. With that change, we can avoid incrementing the counter on writes, unless someone has queried for it since it was last incremented. If the a/c/mtime don't change, and the i_version hasn't changed, then there's no need to dirty the inode metadata on a write. Convert the i_version counter to an atomic64_t, and use the lowest order bit to hold a flag that will tell whether anyone has queried the value since it was last incremented. When we go to maybe increment it, we fetch the value and check the flag bit. If it's clear then we don't need to do anything if the update isn't being forced. If we do need to update, then we increment the counter by 2, and clear the flag bit, and then use a CAS op to swap it into place. If that works, we return true. If it doesn't then do it again with the value that we fetch from the CAS operation. On the query side, if the flag is already set, then we just shift the value down by 1 bit and return it. Otherwise, we set the flag in our on-stack value and again use cmpxchg to swap it into place if it hasn't changed. If it has, then we use the value from the cmpxchg as the new "old" value and try again. This method allows us to avoid incrementing the counter on writes (and dirtying the metadata) under typical workloads. We only need to increment if it has been queried since it was last changed. Signed-off-by: Jeff Layton <jlayton@redhat.com> Reviewed-by: Jan Kara <jack@suse.cz> Acked-by: Dave Chinner <dchinner@redhat.com> Tested-by: Krzysztof Kozlowski <krzk@kernel.org>
2018-01-29btrfs: only dirty the inode in btrfs_update_time if something was changedJeff Layton1-2/+3
At this point, we know that "now" and the file times may differ, and we suspect that the i_version has been flagged to be bumped. Attempt to bump the i_version, and only mark the inode dirty if that actually occurred or if one of the times was updated. Signed-off-by: Jeff Layton <jlayton@redhat.com> Acked-by: David Sterba <dsterba@suse.com> Reviewed-by: Liu Bo <bo.li.liu@oracle.com>
2018-01-29xfs: avoid setting XFS_ILOG_CORE if i_version doesn't need incrementingJeff Layton1-6/+8
If XFS_ILOG_CORE is already set then go ahead and increment it. Signed-off-by: Jeff Layton <jlayton@redhat.com> Acked-by: Darrick J. Wong <darrick.wong@oracle.com> Acked-by: Dave Chinner <dchinner@redhat.com>
2018-01-29fs: only set S_VERSION when updating times if necessaryJeff Layton1-3/+7
We only really need to update i_version if someone has queried for it since we last incremented it. By doing that, we can avoid having to update the inode if the times haven't changed. If the times have changed, then we go ahead and forcibly increment the counter, under the assumption that we'll be going to the storage anyway, and the increment itself is relatively cheap. Signed-off-by: Jeff Layton <jlayton@redhat.com> Reviewed-by: Jan Kara <jack@suse.cz>
2018-01-29IMA: switch IMA over to new i_version APIJeff Layton2-2/+4
Signed-off-by: Jeff Layton <jlayton@redhat.com>
2018-01-29xfs: convert to new i_version APIJeff Layton5-7/+15
Signed-off-by: Jeff Layton <jlayton@redhat.com> Acked-by: Darrick J. Wong <darrick.wong@oracle.com> Acked-by: Dave Chinner <dchinner@redhat.com>
2018-01-29ufs: use new i_version APIJeff Layton3-6/+9
Signed-off-by: Jeff Layton <jlayton@redhat.com>
2018-01-29ocfs2: convert to new i_version APIJeff Layton4-10/+14
Signed-off-by: Jeff Layton <jlayton@redhat.com> Reviewed-by: Jan Kara <jack@suse.cz>
2018-01-29nfsd: convert to new i_version APIJeff Layton1-1/+2
Mostly just making sure we use the "get" wrappers so we know when it is being fetched for later use. Signed-off-by: Jeff Layton <jlayton@redhat.com>
2018-01-29nfs: convert to new i_version APIJeff Layton6-23/+26
For NFS, we just use the "raw" API since the i_version is mostly managed by the server. The exception there is when the client holds a write delegation, but we only need to bump it once there anyway to handle CB_GETATTR. Tested-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Jeff Layton <jlayton@redhat.com>
2018-01-29ext4: convert to new i_version APIJeff Layton7-17/+26
Signed-off-by: Jeff Layton <jlayton@redhat.com> Acked-by: Theodore Ts'o <tytso@mit.edu>
2018-01-29ext2: convert to new i_version APIJeff Layton2-6/+8
Signed-off-by: Jeff Layton <jlayton@redhat.com> Reviewed-by: Jan Kara <jack@suse.cz>
2018-01-29exofs: switch to new i_version APIJeff Layton2-5/+7
Signed-off-by: Jeff Layton <jlayton@redhat.com>
2018-01-29btrfs: convert to new i_version APIJeff Layton3-5/+12
Signed-off-by: Jeff Layton <jlayton@redhat.com> Acked-by: David Sterba <dsterba@suse.com>
2018-01-29afs: convert to new i_version APIJeff Layton2-3/+5
For AFS, it's generally treated as an opaque value, so we use the *_raw variants of the API here. Note that AFS has quite a different definition for this counter. AFS only increments it on changes to the data to the data in regular files and contents of the directories. Inode metadata changes do not result in a version increment. We'll need to reconcile that somehow if we ever want to present this to userspace via statx. Signed-off-by: Jeff Layton <jlayton@redhat.com>
2018-01-29affs: convert to new i_version APIJeff Layton3-5/+8
Signed-off-by: Jeff Layton <jlayton@redhat.com>
2018-01-29fat: convert to new i_version APIJeff Layton4-19/+22
Signed-off-by: Jeff Layton <jlayton@redhat.com>
2018-01-29fs: don't take the i_lock in inode_inc_iversionJeff Layton1-3/+4
The rationale for taking the i_lock when incrementing this value is lost in antiquity. The readers of the field don't take it (at least not universally), so my assumption is that it was only done here to serialize incrementors. If that is indeed the case, then we can drop the i_lock from this codepath and treat it as a atomic64_t for the purposes of incrementing it. This allows us to use inode_inc_iversion without any danger of lock inversion. Note that the read side is not fetched atomically with this change. The assumption here is that that is not a critical issue since the i_version is not fully synchronized with anything else anyway. Signed-off-by: Jeff Layton <jlayton@redhat.com> Reviewed-by: Jan Kara <jack@suse.cz>
2018-01-29fs: new API for handling inode->i_versionJeff Layton9-15/+249
Add a documentation blob that explains what the i_version field is, how it is expected to work, and how it is currently implemented by various filesystems. We already have inode_inc_iversion. Add several other functions for manipulating and accessing the i_version counter. For now, the implementation is trivial and basically works the way that all of the open-coded i_version accesses work today. Future patches will convert existing users of i_version to use the new API, and then convert the backend implementation to do things more efficiently. Signed-off-by: Jeff Layton <jlayton@redhat.com> Reviewed-by: Jan Kara <jack@suse.cz>
2018-01-28Linux 4.15Linus Torvalds1-1/+1
2018-01-28fs/cifs/cifsacl.c Fixes typo in a commentAchilles Gaikwad1-1/+1
Signed-off-by: Achilles Gaikwad <achillesgaikwad@gmail.com> Signed-off-by: Steve French <smfrench@gmail.com>
2018-01-28x86/ftrace: Add one more ENDPROC annotationJosh Poimboeuf1-1/+1
When ORC support was added for the ftrace_64.S code, an ENDPROC for function_hook() was missed. This results in the following warning: arch/x86/kernel/ftrace_64.o: warning: objtool: .entry.text+0x0: unreachable instruction Fixes: e2ac83d74a4d ("x86/ftrace: Fix ORC unwinding from ftrace handlers") Reported-by: Steven Rostedt <rostedt@goodmis.org> Reported-by: Borislav Petkov <bp@alien8.de> Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Ingo Molnar <mingo@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lkml.kernel.org/r/20180128022150.dqierscqmt3uwwsr@treble
2018-01-27x86/speculation: Simplify indirect_branch_prediction_barrier()Borislav Petkov3-9/+13
Make it all a function which does the WRMSR instead of having a hairy inline asm. [dwmw2: export it, fix CONFIG_RETPOLINE issues] Signed-off-by: Borislav Petkov <bp@suse.de> Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: ak@linux.intel.com Cc: dave.hansen@intel.com Cc: karahmed@amazon.de Cc: arjan@linux.intel.com Cc: torvalds@linux-foundation.org Cc: peterz@infradead.org Cc: bp@alien8.de Cc: pbonzini@redhat.com Cc: tim.c.chen@linux.intel.com Cc: gregkh@linux-foundation.org Link: https://lkml.kernel.org/r/1517070274-12128-4-git-send-email-dwmw@amazon.co.uk
2018-01-27x86/retpoline: Simplify vmexit_fill_RSB()Borislav Petkov6-65/+71
Simplify it to call an asm-function instead of pasting 41 insn bytes at every call site. Also, add alignment to the macro as suggested here: https://support.google.com/faqs/answer/7625886 [dwmw2: Clean up comments, let it clobber %ebx and just tell the compiler] Signed-off-by: Borislav Petkov <bp@suse.de> Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: ak@linux.intel.com Cc: dave.hansen@intel.com Cc: karahmed@amazon.de Cc: arjan@linux.intel.com Cc: torvalds@linux-foundation.org Cc: peterz@infradead.org Cc: bp@alien8.de Cc: pbonzini@redhat.com Cc: tim.c.chen@linux.intel.com Cc: gregkh@linux-foundation.org Link: https://lkml.kernel.org/r/1517070274-12128-3-git-send-email-dwmw@amazon.co.uk
2018-01-27x86/cpufeatures: Clean up Spectre v2 related CPUID flagsDavid Woodhouse4-24/+34
We want to expose the hardware features simply in /proc/cpuinfo as "ibrs", "ibpb" and "stibp". Since AMD has separate CPUID bits for those, use them as the user-visible bits. When the Intel SPEC_CTRL bit is set which indicates both IBRS and IBPB capability, set those (AMD) bits accordingly. Likewise if the Intel STIBP bit is set, set the AMD STIBP that's used for the generic hardware capability. Hide the rest from /proc/cpuinfo by putting "" in the comments. Including RETPOLINE and RETPOLINE_AMD which shouldn't be visible there. There are patches to make the sysfs vulnerabilities information non-readable by non-root, and the same should apply to all information about which mitigations are actually in use. Those *shouldn't* appear in /proc/cpuinfo. The feature bit for whether IBPB is actually used, which is needed for ALTERNATIVEs, is renamed to X86_FEATURE_USE_IBPB. Originally-by: Borislav Petkov <bp@suse.de> Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: ak@linux.intel.com Cc: dave.hansen@intel.com Cc: karahmed@amazon.de Cc: arjan@linux.intel.com Cc: torvalds@linux-foundation.org Cc: peterz@infradead.org Cc: bp@alien8.de Cc: pbonzini@redhat.com Cc: tim.c.chen@linux.intel.com Cc: gregkh@linux-foundation.org Link: https://lkml.kernel.org/r/1517070274-12128-2-git-send-email-dwmw@amazon.co.uk
2018-01-27hwmon: (dell-smm) Disable fan support for Dell Vostro 3360Oleksandr Natalenko1-0/+7
Calling fan related SMM functions implemented by Dell BIOS firmware on Dell Vostro 3360 freeze kernel for about 500ms. Unfortunately, it is unlikely for Dell to fix this since the machine is pretty old, so this commit just disables fan support to make the system usable again. Via "force" module param fan support can be enabled. Link: https://bugzilla.kernel.org/show_bug.cgi?id=195751 Link: http://lkml.iu.edu/hypermail/linux/kernel/1711.2/06083.html Reviewed-by: Pali Rohár <pali.rohar@gmail.com> Signed-off-by: Oleksandr Natalenko <oleksandr@natalenko.name> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2018-01-27hwmon: (dell-smm) Disable fan support for Dell Inspiron 7720Pali Rohár1-1/+39
Calling fan related SMM functions implemented by Dell BIOS firmware on Dell Inspiron 7720 freeze kernel for about 500ms. Until Dell fixes it we need to disable fan support for Dell Inspiron 7720 as it makes system unusable. Via "force" module param fan support can be enabled. Reported-by: vova7890@mail.ru Signed-off-by: Pali Rohár <pali.rohar@gmail.com> Link: https://bugzilla.kernel.org/show_bug.cgi?id=195751 Cc: stable@vger.kernel.org # v4.0+, will need backport Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2018-01-27hwmon: (dell-smm) Enable broken functionality via "force" module paramPali Rohár1-2/+5
Some Dell machines are broken and some functionality is disabled. Show warning into dmesg about this fact and allow user via "force" module param to override brokenness and enable broken functionality. Signed-off-by: Pali Rohár <pali.rohar@gmail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2018-01-27x86/cpu/bugs: Make retpoline module warning conditionalThomas Gleixner1-3/+11
If sysfs is disabled and RETPOLINE not defined: arch/x86/kernel/cpu/bugs.c:97:13: warning: ‘spectre_v2_bad_module’ defined but not used [-Wunused-variable] static bool spectre_v2_bad_module; Hide it. Fixes: caf7501a1b4e ("module/retpoline: Warn about missing retpoline in module") Reported-by: Borislav Petkov <bp@alien8.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Andi Kleen <ak@linux.intel.com> Cc: David Woodhouse <dwmw2@infradead.org>
2018-01-27hrtimer: Reset hrtimer cpu base proper on CPU hotplugThomas Gleixner1-0/+3
The hrtimer interrupt code contains a hang detection and mitigation mechanism, which prevents that a long delayed hrtimer interrupt causes a continous retriggering of interrupts which prevent the system from making progress. If a hang is detected then the timer hardware is programmed with a certain delay into the future and a flag is set in the hrtimer cpu base which prevents newly enqueued timers from reprogramming the timer hardware prior to the chosen delay. The subsequent hrtimer interrupt after the delay clears the flag and resumes normal operation. If such a hang happens in the last hrtimer interrupt before a CPU is unplugged then the hang_detected flag is set and stays that way when the CPU is plugged in again. At that point the timer hardware is not armed and it cannot be armed because the hang_detected flag is still active, so nothing clears that flag. As a consequence the CPU does not receive hrtimer interrupts and no timers expire on that CPU which results in RCU stalls and other malfunctions. Clear the flag along with some other less critical members of the hrtimer cpu base to ensure starting from a clean state when a CPU is plugged in. Thanks to Paul, Sebastian and Anna-Maria for their help to get down to the root cause of that hard to reproduce heisenbug. Once understood it's trivial and certainly justifies a brown paperbag. Fixes: 41d2e4949377 ("hrtimer: Tune hrtimer_interrupt hang logic") Reported-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sebastian Sewior <bigeasy@linutronix.de> Cc: Anna-Maria Gleixner <anna-maria@linutronix.de> Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/alpine.DEB.2.20.1801261447590.2067@nanos
2018-01-27x86: Mark hpa as a "Designated Reviewer" for the time beingH. Peter Anvin1-11/+1
Due to some unfortunate events, I have not been directly involved in the x86 kernel patch flow for a while now. I have also not been able to ramp back up by now like I had hoped to, and after reviewing what I will need to work on both internally at Intel and elsewhere in the near term, it is clear that I am not going to be able to ramp back up until late 2018 at the very earliest. It is not acceptable to not recognize that this load is currently taken by Ingo and Thomas without my direct participation, so I mark myself as R: (designated reviewer) rather than M: (maintainer) until further notice. This is in fact recognizing the de facto situation for the past few years. I have obviously no intention of going away, and I will do everything within my power to improve Linux on x86 and x86 for Linux. This, however, puts credit where it is due and reflects a change of focus. This patch also removes stale entries for portions of the x86 architecture which have not been maintained separately from arch/x86 for a long time. If there is a reason to re-introduce them then that can happen later. Signed-off-by: H. Peter Anvin <h.peter.anvin@intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Bruce Schlobohm <bruce.schlobohm@intel.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180125195934.5253-1-hpa@zytor.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2018-01-26update internal version number for cifs.koSteve French1-1/+1
To version 2.11 Signed-off-by: Steve French <smfrench@gmail.com>
2018-01-26cifs: add .splice_writeAndrés Souto1-0/+6
add splice_write support in cifs vfs using iter_file_splice_write Signed-off-by: Andrés Souto <kai670@gmail.com> Signed-off-by: Steve French <smfrench@gmail.com>
2018-01-26CIFS: document tcon/ses/server refcount danceAurelien Aptel1-1/+31
Signed-off-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <smfrench@gmail.com> Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
2018-01-26move a few externs to smbdirect.h to eliminate warningSteve French2-9/+9
Quiet minor sparse warnings in new SMB3 rdma patch series ("symbol was not declared ...") by moving these externs to smbdirect.h Signed-off-by: Steve French <smfrench@gmail.com> Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
2018-01-26CIFS: zero sensitive data when freeingAurelien Aptel3-15/+8
also replaces memset()+kfree() by kzfree(). Signed-off-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <smfrench@gmail.com> Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com> Cc: <stable@vger.kernel.org>
2018-01-26Cleanup some minor endian issues in smb3 rdmaSteve French3-20/+21
Minor cleanup of some sparse warnings (including a few misc endian fixes for the new smb3 rdma code) Signed-off-by: Steve French <smfrench@gmail.com> Reviewed-by: Ronnie Sahlberg <lsahlber@redhat.com>
2018-01-26CIFS: dump IPC tcon in debug proc fileAurelien Aptel1-26/+35
dump it as first share with an "IPC: " prefix. Signed-off-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <smfrench@gmail.com> Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
2018-01-26CIFS: use tcon_ipc instead of use_ipc parameter of SMB2_ioctlAurelien Aptel4-37/+25
Since IPC now has a tcon object, the caller can just pass it. This allows domain-based DFS requests to work with smb2+. Link: https://bugzilla.samba.org/show_bug.cgi?id=12917 Fixes: 9d49640a21bf ("CIFS: implement get_dfs_refer for SMB2+") Signed-off-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <smfrench@gmail.com> Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
2018-01-26CIFS: make IPC a regular tconAurelien Aptel5-76/+133
* Remove ses->ipc_tid. * Make IPC$ regular tcon. * Add a direct pointer to it in ses->tcon_ipc. * Distinguish PIPE tcon from IPC tcon by adding a tcon->pipe flag. All IPC tcons are pipes but not all pipes are IPC. * All TreeConnect functions now cannot take a NULL tcon object. The IPC tcon has the same lifetime as the session it belongs to. It is created when the session is created and destroyed when the session is destroyed. Since no mounts directly refer to the IPC tcon, its refcount should always be set to initialisation value (1). Thus we make sure cifs_put_tcon() skips it. If the mount request resulting in a new session being created requires encryption, try to require it too for IPC. * set SERVER_NAME_LENGTH to serverName actual size The maximum length of an ipv6 string representation is defined in INET6_ADDRSTRLEN as 45+1 for null but lets keep what we know works. Signed-off-by: Aurelien Aptel <aaptel@suse.com> Signed-off-by: Steve French <smfrench@gmail.com> Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
2018-01-26block: remove smart1,2.hCorentin Labbe1-278/+0
smart1,2.h is unused since commit d436641439e0 ("cpqarray: remove it from the kernel") Remove it from tree. Signed-off-by: Corentin Labbe <clabbe@baylibre.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-01-26regulator: Fix build errorMark Brown1-1/+1
3d67fe950707 (regulator: core: Refactor regulator_list_voltage()) missed one user of regulator_list_voltage(), update for that. Signed-off-by: Mark Brown <broonie@kernel.org>
2018-01-26VSOCK: set POLLOUT | POLLWRNORM for TCP_CLOSINGStefan Hajnoczi1-1/+1
select(2) with wfds but no rfds must return when the socket is shut down by the peer. This way userspace notices socket activity and gets -EPIPE from the next write(2). Currently select(2) does not return for virtio-vsock when a SEND+RCV shutdown packet is received. This is because vsock_poll() only sets POLLOUT | POLLWRNORM for TCP_CLOSE, not the TCP_CLOSING state that the socket is in when the shutdown is received. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-26dccp: don't restart ccid2_hc_tx_rto_expire() if sk in closed stateAlexey Kodanev1-0/+3
ccid2_hc_tx_rto_expire() timer callback always restarts the timer again and can run indefinitely (unless it is stopped outside), and after commit 120e9dabaf55 ("dccp: defer ccid_hc_tx_delete() at dismantle time"), which moved ccid_hc_tx_delete() (also includes sk_stop_timer()) from dccp_destroy_sock() to sk_destruct(), this started to happen quite often. The timer prevents releasing the socket, as a result, sk_destruct() won't be called. Found with LTP/dccp_ipsec tests running on the bonding device, which later couldn't be unloaded after the tests were completed: unregister_netdevice: waiting for bond0 to become free. Usage count = 148 Fixes: 2a91aa396739 ("[DCCP] CCID2: Initial CCID2 (TCP-Like) implementation") Signed-off-by: Alexey Kodanev <alexey.kodanev@oracle.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-26Update the RISC-V MAINTAINERS filePalmer Dabbelt1-2/+2
Now that we're upstream in Linux we've been able to make some infrastructure changes so our port works a bit more like other ports. Specifically: * We now have a mailing list specific to the RISC-V Linux port, hosted at lists.infreadead.org. * We now have a kernel.org git tree where work on our port is coordinated. This patch changes the RISC-V maintainers entry to reflect these new bits of infrastructure. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>