Commit Graph

1186120 Commits

Author SHA1 Message Date
Ryusuke Konishi
92c5d1b860 nilfs2: reject devices with insufficient block count
The current sanity check for nilfs2 geometry information lacks checks for
the number of segments stored in superblocks, so even for device images
that have been destructively truncated or have an unusually high number of
segments, the mount operation may succeed.

This causes out-of-bounds block I/O on file system block reads or log
writes to the segments, the latter in particular causing
"a_ops->writepages" to repeatedly fail, resulting in sync_inodes_sb() to
hang.

Fix this issue by checking the number of segments stored in the superblock
and avoiding mounting devices that can cause out-of-bounds accesses.  To
eliminate the possibility of overflow when calculating the number of
blocks required for the device from the number of segments, this also adds
a helper function to calculate the upper bound on the number of segments
and inserts a check using it.

Link: https://lkml.kernel.org/r/20230526021332.3431-1-konishi.ryusuke@gmail.com
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Reported-by: syzbot+7d50f1e54a12ba3aeae2@syzkaller.appspotmail.com
  Link: https://syzkaller.appspot.com/bug?extid=7d50f1e54a12ba3aeae2
Tested-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-06-12 11:31:51 -07:00
Luís Henriques
50d927880e ocfs2: fix use-after-free when unmounting read-only filesystem
It's trivial to trigger a use-after-free bug in the ocfs2 quotas code using
fstest generic/452.  After a read-only remount, quotas are suspended and
ocfs2_mem_dqinfo is freed through ->ocfs2_local_free_info().  When unmounting
the filesystem, an UAF access to the oinfo will eventually cause a crash.
 
BUG: KASAN: slab-use-after-free in timer_delete+0x54/0xc0
Read of size 8 at addr ffff8880389a8208 by task umount/669
...
Call Trace:
 <TASK>
 ...
 timer_delete+0x54/0xc0
 try_to_grab_pending+0x31/0x230
 __cancel_work_timer+0x6c/0x270
 ocfs2_disable_quotas.isra.0+0x3e/0xf0 [ocfs2]
 ocfs2_dismount_volume+0xdd/0x450 [ocfs2]
 generic_shutdown_super+0xaa/0x280
 kill_block_super+0x46/0x70
 deactivate_locked_super+0x4d/0xb0
 cleanup_mnt+0x135/0x1f0
 ...
 </TASK>

Allocated by task 632:
 kasan_save_stack+0x1c/0x40
 kasan_set_track+0x21/0x30
 __kasan_kmalloc+0x8b/0x90
 ocfs2_local_read_info+0xe3/0x9a0 [ocfs2]
 dquot_load_quota_sb+0x34b/0x680
 dquot_load_quota_inode+0xfe/0x1a0
 ocfs2_enable_quotas+0x190/0x2f0 [ocfs2]
 ocfs2_fill_super+0x14ef/0x2120 [ocfs2]
 mount_bdev+0x1be/0x200
 legacy_get_tree+0x6c/0xb0
 vfs_get_tree+0x3e/0x110
 path_mount+0xa90/0xe10
 __x64_sys_mount+0x16f/0x1a0
 do_syscall_64+0x43/0x90
 entry_SYSCALL_64_after_hwframe+0x72/0xdc

Freed by task 650:
 kasan_save_stack+0x1c/0x40
 kasan_set_track+0x21/0x30
 kasan_save_free_info+0x2a/0x50
 __kasan_slab_free+0xf9/0x150
 __kmem_cache_free+0x89/0x180
 ocfs2_local_free_info+0x2ba/0x3f0 [ocfs2]
 dquot_disable+0x35f/0xa70
 ocfs2_susp_quotas.isra.0+0x159/0x1a0 [ocfs2]
 ocfs2_remount+0x150/0x580 [ocfs2]
 reconfigure_super+0x1a5/0x3a0
 path_mount+0xc8a/0xe10
 __x64_sys_mount+0x16f/0x1a0
 do_syscall_64+0x43/0x90
 entry_SYSCALL_64_after_hwframe+0x72/0xdc

Link: https://lkml.kernel.org/r/20230522102112.9031-1-lhenriques@suse.de
Signed-off-by: Luís Henriques <lhenriques@suse.de>
Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Tested-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-06-12 11:31:51 -07:00
Lorenzo Stoakes
9f6c6ad161 lib/test_vmalloc.c: avoid garbage in page array
It turns out that alloc_pages_bulk_array() does not treat the page_array
parameter as an output parameter, but rather reads the array and skips any
entries that have already been allocated.

This is somewhat unexpected and breaks this test, as we allocate the pages
array uninitialised on the assumption it will be overwritten.

As a result, the test was referencing uninitialised data and causing the
PFN to not be valid and thus a WARN_ON() followed by a null pointer deref
and panic.

In addition, this is an array of pointers not of struct page objects, so we
need only allocate an array with elements of pointer size.

We solve both problems by simply using kcalloc() and referencing
sizeof(struct page *) rather than sizeof(struct page).

Link: https://lkml.kernel.org/r/20230524082424.10022-1-lstoakes@gmail.com
Fixes: 869cb29a61 ("lib/test_vmalloc.c: add vm_map_ram()/vm_unmap_ram() test case")
Signed-off-by: Lorenzo Stoakes <lstoakes@gmail.com>
Reviewed-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Reviewed-by: Baoquan He <bhe@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-06-12 11:31:51 -07:00
Ryusuke Konishi
fee5eaecca nilfs2: fix possible out-of-bounds segment allocation in resize ioctl
Syzbot reports that in its stress test for resize ioctl, the log writing
function nilfs_segctor_do_construct hits a WARN_ON in
nilfs_segctor_truncate_segments().

It turned out that there is a problem with the current implementation of
the resize ioctl, which changes the writable range on the device (the
range of allocatable segments) at the end of the resize process.

This order is necessary for file system expansion to avoid corrupting the
superblock at trailing edge.  However, in the case of a file system
shrink, if log writes occur after truncating out-of-bounds trailing
segments and before the resize is complete, segments may be allocated from
the truncated space.

The userspace resize tool was fine as it limits the range of allocatable
segments before performing the resize, but it can run into this issue if
the resize ioctl is called alone.

Fix this issue by changing nilfs_sufile_resize() to update the range of
allocatable segments immediately after successful truncation of segment
space in case of file system shrink.

Link: https://lkml.kernel.org/r/20230524094348.3784-1-konishi.ryusuke@gmail.com
Fixes: 4e33f9eab0 ("nilfs2: implement resize ioctl")
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Reported-by: syzbot+33494cd0df2ec2931851@syzkaller.appspotmail.com
Closes: https://lkml.kernel.org/r/0000000000005434c405fbbafdc5@google.com
Tested-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-06-12 11:31:51 -07:00
Ricardo Ribalda
88ac3bbcf7 riscv/purgatory: remove PGO flags
If profile-guided optimization is enabled, the purgatory ends up with
multiple .text sections.  This is not supported by kexec and crashes the
system.

Link: https://lkml.kernel.org/r/20230321-kexec_clang16-v7-4-b05c520b7296@chromium.org
Fixes: 930457057a ("kernel/kexec_file.c: split up __kexec_load_puragory")
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Acked-by: Palmer Dabbelt <palmer@rivosinc.com>
Cc: <stable@vger.kernel.org>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Baoquan He <bhe@redhat.com>
Cc: Borislav Petkov (AMD) <bp@alien8.de>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Philipp Rudo <prudo@redhat.com>
Cc: Ross Zwisler <zwisler@google.com>
Cc: Simon Horman <horms@kernel.org>
Cc: Steven Rostedt (Google) <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tom Rix <trix@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-06-12 11:31:51 -07:00
Ricardo Ribalda
20188baceb powerpc/purgatory: remove PGO flags
If profile-guided optimization is enabled, the purgatory ends up with
multiple .text sections.  This is not supported by kexec and crashes the
system.

Link: https://lkml.kernel.org/r/20230321-kexec_clang16-v7-3-b05c520b7296@chromium.org
Fixes: 930457057a ("kernel/kexec_file.c: split up __kexec_load_puragory")
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: <stable@vger.kernel.org>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Baoquan He <bhe@redhat.com>
Cc: Borislav Petkov (AMD) <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Palmer Dabbelt <palmer@rivosinc.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Philipp Rudo <prudo@redhat.com>
Cc: Ross Zwisler <zwisler@google.com>
Cc: Simon Horman <horms@kernel.org>
Cc: Steven Rostedt (Google) <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tom Rix <trix@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-06-12 11:31:50 -07:00
Ricardo Ribalda
97b6b9cbba x86/purgatory: remove PGO flags
If profile-guided optimization is enabled, the purgatory ends up with
multiple .text sections.  This is not supported by kexec and crashes the
system.

Link: https://lkml.kernel.org/r/20230321-kexec_clang16-v7-2-b05c520b7296@chromium.org
Fixes: 930457057a ("kernel/kexec_file.c: split up __kexec_load_puragory")
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Cc: <stable@vger.kernel.org>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Baoquan He <bhe@redhat.com>
Cc: Borislav Petkov (AMD) <bp@alien8.de>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Palmer Dabbelt <palmer@rivosinc.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Philipp Rudo <prudo@redhat.com>
Cc: Ross Zwisler <zwisler@google.com>
Cc: Simon Horman <horms@kernel.org>
Cc: Steven Rostedt (Google) <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tom Rix <trix@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-06-12 11:31:50 -07:00
Ricardo Ribalda
8652d44f46 kexec: support purgatories with .text.hot sections
Patch series "kexec: Fix kexec_file_load for llvm16 with PGO", v7.

When upreving llvm I realised that kexec stopped working on my test
platform.

The reason seems to be that due to PGO there are multiple .text sections
on the purgatory, and kexec does not supports that.


This patch (of 4):

Clang16 links the purgatory text in two sections when PGO is in use:

  [ 1] .text             PROGBITS         0000000000000000  00000040
       00000000000011a1  0000000000000000  AX       0     0     16
  [ 2] .rela.text        RELA             0000000000000000  00003498
       0000000000000648  0000000000000018   I      24     1     8
  ...
  [17] .text.hot.        PROGBITS         0000000000000000  00003220
       000000000000020b  0000000000000000  AX       0     0     1
  [18] .rela.text.hot.   RELA             0000000000000000  00004428
       0000000000000078  0000000000000018   I      24    17     8

And both of them have their range [sh_addr ... sh_addr+sh_size] on the
area pointed by `e_entry`.

This causes that image->start is calculated twice, once for .text and
another time for .text.hot. The second calculation leaves image->start
in a random location.

Because of this, the system crashes immediately after:

kexec_core: Starting new kernel

Link: https://lkml.kernel.org/r/20230321-kexec_clang16-v7-0-b05c520b7296@chromium.org
Link: https://lkml.kernel.org/r/20230321-kexec_clang16-v7-1-b05c520b7296@chromium.org
Fixes: 930457057a ("kernel/kexec_file.c: split up __kexec_load_puragory")
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Reviewed-by: Ross Zwisler <zwisler@google.com>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Reviewed-by: Philipp Rudo <prudo@redhat.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Baoquan He <bhe@redhat.com>
Cc: Borislav Petkov (AMD) <bp@alien8.de>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Palmer Dabbelt <palmer@rivosinc.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Simon Horman <horms@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tom Rix <trix@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-06-12 11:31:50 -07:00
Peter Xu
5543d3c43c mm/uffd: allow vma to merge as much as possible
We used to not pass in the pgoff correctly when register/unregister uffd
regions, it caused incorrect behavior on vma merging and can cause
mergeable vmas being separate after ioctls return.

For example, when we have:

  vma1(range 0-9, with uffd), vma2(range 10-19, no uffd)

Then someone unregisters uffd on range (5-9), it should logically become:

  vma1(range 0-4, with uffd), vma2(range 5-19, no uffd)

But with current code we'll have:

  vma1(range 0-4, with uffd), vma3(range 5-9, no uffd), vma2(range 10-19, no uffd)

This patch allows such merge to happen correctly before ioctl returns.

This behavior seems to have existed since the 1st day of uffd.  Since
pgoff for vma_merge() is only used to identify the possibility of vma
merging, meanwhile here what we did was always passing in a pgoff smaller
than what we should, so there should have no other side effect besides not
merging it.  Let's still tentatively copy stable for this, even though I
don't see anything will go wrong besides vma being split (which is mostly
not user visible).

Link: https://lkml.kernel.org/r/20230517190916.3429499-3-peterx@redhat.com
Fixes: 86039bd3b4 ("userfaultfd: add new syscall to provide memory externalization")
Signed-off-by: Peter Xu <peterx@redhat.com>
Reported-by: Lorenzo Stoakes <lstoakes@gmail.com>
Acked-by: Lorenzo Stoakes <lstoakes@gmail.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Mike Rapoport (IBM) <rppt@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-06-12 11:31:50 -07:00
Peter Xu
270aa01062 mm/uffd: fix vma operation where start addr cuts part of vma
Patch series "mm/uffd: Fix vma merge/split", v2.

This series contains two patches that fix vma merge/split for userfaultfd
on two separate issues.

Patch 1 fixes a regression since 6.1+ due to something we overlooked when
converting to maple tree apis.  The plan is we use patch 1 to replace the
commit "2f628010799e (mm: userfaultfd: avoid passing an invalid range to
vma_merge())" in mm-hostfixes-unstable tree if possible, so as to bring
uffd vma operations back aligned with the rest code again.

Patch 2 fixes a long standing issue that vma can be left unmerged even if
we can for either uffd register or unregister.

Many thanks to Lorenzo on either noticing this issue from the assert
movement patch, looking at this problem, and also provided a reproducer on
the unmerged vma issue [1].

[1] https://gist.github.com/lorenzo-stoakes/a11a10f5f479e7a977fc456331266e0e


This patch (of 2):

It seems vma merging with uffd paths is broken with either
register/unregister, where right now we can feed wrong parameters to
vma_merge() and it's found by recent patch which moved asserts upwards in
vma_merge() by Lorenzo Stoakes:

https://lore.kernel.org/all/ZFunF7DmMdK05MoF@FVFF77S0Q05N.cambridge.arm.com/

It's possible that "start" is contained within vma but not clamped to its
start.  We need to convert this into either "cannot merge" case or "can
merge" case 4 which permits subdivision of prev by assigning vma to prev. 
As we loop, each subsequent VMA will be clamped to the start.

This patch will eliminate the report and make sure vma_merge() calls will
become legal again.

One thing to mention is that the "Fixes: 29417d292bd0" below is there only
to help explain where the warning can start to trigger, the real commit to
fix should be 69dbe6daf1.  Commit 29417d292b helps us to identify the
issue, but unfortunately we may want to keep it in Fixes too just to ease
kernel backporters for easier tracking.

Link: https://lkml.kernel.org/r/20230517190916.3429499-1-peterx@redhat.com
Link: https://lkml.kernel.org/r/20230517190916.3429499-2-peterx@redhat.com
Fixes: 69dbe6daf1 ("userfaultfd: use maple tree iterator to iterate VMAs")
Signed-off-by: Peter Xu <peterx@redhat.com>
Reported-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Lorenzo Stoakes <lstoakes@gmail.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Closes: https://lore.kernel.org/all/ZFunF7DmMdK05MoF@FVFF77S0Q05N.cambridge.arm.com/
Cc: Lorenzo Stoakes <lstoakes@gmail.com>
Cc: Mike Rapoport (IBM) <rppt@kernel.org>
Cc: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-06-12 11:31:50 -07:00
Arnd Bergmann
bde1597d0f radix-tree: move declarations to header
The xarray.c file contains the only call to radix_tree_node_rcu_free(),
and it comes with its own extern declaration for it.  This means the
function definition causes a missing-prototype warning:

lib/radix-tree.c:288:6: error: no previous prototype for 'radix_tree_node_rcu_free' [-Werror=missing-prototypes]

Instead, move the declaration for this function to a new header that can
be included by both, and do the same for the radix_tree_node_cachep
variable that has the same underlying problem but does not cause a warning
with gcc.

[zhangpeng.00@bytedance.com: fix building radix tree test suite]
  Link: https://lkml.kernel.org/r/20230521095450.21332-1-zhangpeng.00@bytedance.com
Link: https://lkml.kernel.org/r/20230516194212.548910-1-arnd@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-06-12 11:31:50 -07:00
Ryusuke Konishi
2f012f2bac nilfs2: fix incomplete buffer cleanup in nilfs_btnode_abort_change_key()
A syzbot fault injection test reported that nilfs_btnode_create_block, a
helper function that allocates a new node block for b-trees, causes a
kernel BUG for disk images where the file system block size is smaller
than the page size.

This was due to unexpected flags on the newly allocated buffer head, and
it turned out to be because the buffer flags were not cleared by
nilfs_btnode_abort_change_key() after an error occurred during a b-tree
update operation and the buffer was later reused in that state.

Fix this issue by using nilfs_btnode_delete() to abandon the unused
preallocated buffer in nilfs_btnode_abort_change_key().

Link: https://lkml.kernel.org/r/20230513102428.10223-1-konishi.ryusuke@gmail.com
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Reported-by: syzbot+b0a35a5c1f7e846d3b09@syzkaller.appspotmail.com
Closes: https://lkml.kernel.org/r/000000000000d1d6c205ebc4d512@google.com
Tested-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-06-12 11:31:49 -07:00
Linus Torvalds
8b817fded4 Tracing fixes:
User events:
 
  - Use long instead of int for storing the enable set/clear bit, as it was
    found that big endian machines could end up using the wrong bits.
 
  - Split allocating mm and attaching it. This keeps the allocation separate
    from the registration and avoids various races.
 
  - Remove RCU locking around pin_user_pages_remote() as that can schedule. The
    RCU protection is no longer needed with the above split of mm allocation and
    attaching.
 
  - Rename the "link" fields of the various structs to something more
    meaningful.
 
  - Add comments around user_event_mm struct usage and locking requirements.
 
 Timerlat tracer:
 
  - Fix missed wakeup of timerlat thread caused by the timerlat interrupt
    triggering when tracing is off. The timer interrupt handler needs to always
    wake up the timerlat thread regardless if tracing is enabled or not,
    otherwise, it will never wake up.
 
 Histograms:
 
  - Fix regression of breaking the "stacktrace" modifier for variables. That
    modifier cannot be used for values, but can be used for variables that are
    passed from one histogram to the next. This was broken when adding the
    restriction to values as the variable logic used the same code.
 
  - Rename the special field "stacktrace" to "common_stacktrace". Special fields
    (that are not actually part of the event, but can act just like event
    fields, like 'comm' and 'timestamp') should be prefixed with 'common_' for
    consistency. To keep backward compatibility, 'stacktrace' can still be used
    (as with the special field 'cpu'), but can be overridden if the event has a
    field called 'stacktrace'.
 
  - Update the synthetic event selftests to use the new name (synthetic events
    are created by histograms)
 
 Tracing bootup selftests:
 
  - Reorganize the code to keep artifacts of the selftests not compiled in when
    selftests are not configured.
 
  - Add various cond_resched() around the selftest code, as the softlock
    watchdog was triggering much more often. It appears that the kernel runs
    slower now with full debugging enabled.
 
  - While debugging ftrace with ftrace (using an instance ring buffer instead of
    the top level one), I found that the selftests were disabling prints to the
    debug instance. This should not happen, as the selftests only disable
    printing to the main buffer as the selftests examine the main buffer to see
    if it has what it expects, and prints can make the tests fail. Make the
    selftests only disable printing to the toplevel buffer, and leave the
    instance buffers alone.
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Merge tag 'trace-v6.4-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull tracing fixes from Steven Rostedt:
 "User events:

   - Use long instead of int for storing the enable set/clear bit, as it
     was found that big endian machines could end up using the wrong
     bits.

   - Split allocating mm and attaching it. This keeps the allocation
     separate from the registration and avoids various races.

   - Remove RCU locking around pin_user_pages_remote() as that can
     schedule. The RCU protection is no longer needed with the above
     split of mm allocation and attaching.

   - Rename the "link" fields of the various structs to something more
     meaningful.

   - Add comments around user_event_mm struct usage and locking
     requirements.

  Timerlat tracer:

   - Fix missed wakeup of timerlat thread caused by the timerlat
     interrupt triggering when tracing is off. The timer interrupt
     handler needs to always wake up the timerlat thread regardless if
     tracing is enabled or not, otherwise, it will never wake up.

  Histograms:

   - Fix regression of breaking the "stacktrace" modifier for variables.
     That modifier cannot be used for values, but can be used for
     variables that are passed from one histogram to the next. This was
     broken when adding the restriction to values as the variable logic
     used the same code.

   - Rename the special field "stacktrace" to "common_stacktrace".

     Special fields (that are not actually part of the event, but can
     act just like event fields, like 'comm' and 'timestamp') should be
     prefixed with 'common_' for consistency. To keep backward
     compatibility, 'stacktrace' can still be used (as with the special
     field 'cpu'), but can be overridden if the event has a field called
     'stacktrace'.

   - Update the synthetic event selftests to use the new name (synthetic
     events are created by histograms)

  Tracing bootup selftests:

   - Reorganize the code to keep artifacts of the selftests not compiled
     in when selftests are not configured.

   - Add various cond_resched() around the selftest code, as the
     softlock watchdog was triggering much more often. It appears that
     the kernel runs slower now with full debugging enabled.

   - While debugging ftrace with ftrace (using an instance ring buffer
     instead of the top level one), I found that the selftests were
     disabling prints to the debug instance.

     This should not happen, as the selftests only disable printing to
     the main buffer as the selftests examine the main buffer to see if
     it has what it expects, and prints can make the tests fail.

     Make the selftests only disable printing to the toplevel buffer,
     and leave the instance buffers alone"

* tag 'trace-v6.4-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  tracing: Have function_graph selftest call cond_resched()
  tracing: Only make selftest conditionals affect the global_trace
  tracing: Make tracing_selftest_running/delete nops when not used
  tracing: Have tracer selftests call cond_resched() before running
  tracing: Move setting of tracing_selftest_running out of register_tracer()
  tracing/selftests: Update synthetic event selftest to use common_stacktrace
  tracing: Rename stacktrace field to common_stacktrace
  tracing/histograms: Allow variables to have some modifiers
  tracing/user_events: Document user_event_mm one-shot list usage
  tracing/user_events: Rename link fields for clarity
  tracing/user_events: Remove RCU lock while pinning pages
  tracing/user_events: Split up mm alloc and attach
  tracing/timerlat: Always wakeup the timerlat thread
  tracing/user_events: Use long vs int for atomic bit ops
2023-05-29 07:20:13 -04:00
Linus Torvalds
7a6c8e512f This push fixes an alignment crash in x86/aria.
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Merge tag 'v6.4-p3' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

Pull crypto fix from Herbert Xu:
 "Fix an alignment crash in x86/aria"

* tag 'v6.4-p3' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: x86/aria - Use 16 byte alignment for GFNI constant vectors
2023-05-29 07:05:49 -04:00
Linus Torvalds
ac2263b588 Revert "module: error out early on concurrent load of the same module file"
This reverts commit 9828ed3f69.

Sadly, it does seem to cause failures to load modules. Johan Hovold reports:

 "This change breaks module loading during boot on the Lenovo Thinkpad
  X13s (aarch64).

  Specifically it results in indefinite probe deferral of the display
  and USB (ethernet) which makes it a pain to debug. Typing in the dark
  to acquire some logs reveals that other modules are missing as well"

Since this was applied late as a "let's try this", I'm reverting it
asap, and we can try to figure out what goes wrong later.  The excessive
parallel module loading problem is annoying, but not noticeable in
normal situations, and this was only meant as an optimistic workaround
for a user-space bug.

One possible solution may be to do the optimistic exclusive open first,
and then use a lock to serialize loading if that fails.

Reported-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/lkml/ZHRpH-JXAxA6DnzR@hovoldconsulting.com/
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2023-05-29 06:40:33 -04:00
Steven Rostedt (Google)
a2d910f022 tracing: Have function_graph selftest call cond_resched()
When all kernel debugging is enabled (lockdep, KSAN, etc), the function
graph enabling and disabling can take several seconds to complete. The
function_graph selftest enables and disables function graph tracing
several times. With full debugging enabled, the soft lockup watchdog was
triggering because the selftest was running without ever scheduling.

Add cond_resched() throughout the test to make sure it does not trigger
the soft lockup detector.

Link: https://lkml.kernel.org/r/20230528051742.1325503-6-rostedt@goodmis.org

Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2023-05-28 21:15:46 -04:00
Steven Rostedt (Google)
ac9d2cb1d5 tracing: Only make selftest conditionals affect the global_trace
The tracing_selftest_running and tracing_selftest_disabled variables were
to keep trace_printk() and other writes from affecting the tracing
selftests, as the tracing selftests would examine the ring buffer to see
if it contained what it expected or not. trace_printk() and friends could
add to the ring buffer and cause the selftests to fail (and then disable
the tracer that was being tested). To keep that from happening, these
variables were added and would keep trace_printk() and friends from
writing to the ring buffer while the tests were going on.

But this was only the top level ring buffer (owned by the global_trace
instance). There is no reason to prevent writing into ring buffers of
other instances via the trace_array_printk() and friends. For the
functions that could be used by other instances, check if the global_trace
is the tracer instance that is being written to before deciding to not
allow the write.

Link: https://lkml.kernel.org/r/20230528051742.1325503-5-rostedt@goodmis.org

Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2023-05-28 21:15:33 -04:00
Steven Rostedt (Google)
a3ae76d7ff tracing: Make tracing_selftest_running/delete nops when not used
There's no reason to test the condition variables tracing_selftest_running
or tracing_selftest_delete when tracing selftests are not enabled. Make
them define 0s when not the selftests are not configured in.

Link: https://lkml.kernel.org/r/20230528051742.1325503-4-rostedt@goodmis.org

Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2023-05-28 21:15:26 -04:00
Steven Rostedt (Google)
9da705d432 tracing: Have tracer selftests call cond_resched() before running
As there are more and more internal selftests being added to the Linux
kernel (KSAN, lockdep, etc) the selftests are taking longer to run when
these are enabled. Add a cond_resched() to the calling of
do_run_tracer_selftest() to force a schedule if NEED_RESCHED is set,
otherwise the soft lockup watchdog may trigger on boot up.

Link: https://lkml.kernel.org/r/20230528051742.1325503-3-rostedt@goodmis.org

Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2023-05-28 21:15:17 -04:00
Steven Rostedt (Google)
e8352cf577 tracing: Move setting of tracing_selftest_running out of register_tracer()
The variables tracing_selftest_running and tracing_selftest_disabled are
only used for when CONFIG_FTRACE_STARTUP_TEST is enabled. Make them only
visible within the selftest code. The setting of those variables are in
the register_tracer() call, and set in a location where they do not need
to be. Create a wrapper around run_tracer_selftest() called
do_run_tracer_selftest() which sets those variables, and have
register_tracer() call that instead.

Having those variables only set within the CONFIG_FTRACE_STARTUP_TEST
scope gets rid of them (and also the ability to remove testing against
them) when the startup tests are not enabled (most cases).

Link: https://lkml.kernel.org/r/20230528051742.1325503-2-rostedt@goodmis.org

Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
2023-05-28 21:15:04 -04:00
Linus Torvalds
e338142b39 phy fixes for 6.4
- init count imbalance fix in qcom-qmp-pcie and combo drivers
  - kernel doc header fix for qcom-snps driver
  - mediatek floating point comparison fix
  - amlogic fix register value
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Merge tag 'phy-fixes-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy

Pull phy fixes from Vinod Koul:

 - init count imbalance fix in qcom-qmp-pcie and combo drivers

 - kernel doc header fix for qcom-snps driver

 - mediatek floating point comparison fix

 - amlogic fix register value

* tag 'phy-fixes-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/phy/linux-phy:
  phy: qcom-snps: correct struct qcom_snps_hsphy kerneldoc
  phy: amlogic: phy-meson-g12a-mipi-dphy-analog: fix CNTL2_DIF_TX_CTL0 value
  phy: mediatek: rework the floating point comparisons to fixed point
  phy: qcom-qmp-pcie-msm8996: fix init-count imbalance
  phy: qcom-qmp-combo: fix init-count imbalance
2023-05-28 20:05:07 -04:00
Linus Torvalds
dca389eb95 dmaengine fixes for v6.4
- AT HDMAC driver fixes for Flow Controller bitfield, peripheral ID
   handling and potential NULL dereference check
 - PL330 function rename to avoid conflicts
 - build warning fix for pm function in TI driver
 - IDXD driver fix for passing freed memory
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Merge tag 'dmaengine-fix-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine

Pull dmaengine fixes from Vinod Koul:
 "Driver fixes for the at-hdmac, pl330, TI and IDXD drivers:

   - AT HDMAC driver fixes for Flow Controller bitfield, peripheral ID
     handling and potential NULL dereference check

   - PL330 function rename to avoid conflicts

   - build warning fix for pm function in TI driver

   - IDXD driver fix for passing freed memory"

* tag 'dmaengine-fix-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine:
  dmaengine: at_hdmac: Extend the Flow Controller bitfield to three bits
  dmaengine: at_hdmac: Repair bitfield macros for peripheral ID handling
  dmaengine: pl330: rename _start to prevent build error
  dmaengine: at_xdmac: fix potential Oops in at_xdmac_prep_interleaved()
  dmaengine: ti: k3-udma: annotate pm function with __maybe_unused
  dmaengine: idxd: Fix passing freed memory in idxd_cdev_open()
2023-05-28 19:59:08 -04:00
Linus Torvalds
7877cb91f1 Linux 6.4-rc4 2023-05-28 07:49:00 -04:00
Linus Torvalds
f8b2507c26 A single fix for x86:
- Prevent a bogus setting for the number of HT siblings, which is caused
    by the CPUID evaluation trainwreck of X86. That recomputes the value
    for each CPU, so the last CPU "wins". That can cause completely bogus
    sibling values.
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Merge tag 'x86-urgent-2023-05-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 cpu fix from Thomas Gleixner:
 "A single fix for x86:

   - Prevent a bogus setting for the number of HT siblings, which is
     caused by the CPUID evaluation trainwreck of X86. That recomputes
     the value for each CPU, so the last CPU "wins". That can cause
     completely bogus sibling values"

* tag 'x86-urgent-2023-05-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/topology: Fix erroneous smp_num_siblings on Intel Hybrid platforms
2023-05-28 07:42:05 -04:00
Linus Torvalds
2d5438f4c6 A small set of perf fixes:
- Make the CHA discovery based on MSR readout to work around broken
    discovery tables in some SPR firmwares.
 
  - Prevent saving PEBS configuration which has software bits set that
    cause a crash when restored into the relevant MSR.
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Merge tag 'perf-urgent-2023-05-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull perf fixes from Thomas Gleixner:
 "A small set of perf fixes:

   - Make the MSR-readout based CHA discovery work around broken
     discovery tables in some SPR firmwares.

   - Prevent saving PEBS configuration which has software bits set that
     cause a crash when restored into the relevant MSR"

* tag 'perf-urgent-2023-05-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/uncore: Correct the number of CHAs on SPR
  perf/x86/intel: Save/restore cpuc->active_pebs_data_cfg when using guest PEBS
2023-05-28 07:37:23 -04:00
Linus Torvalds
abbf7fa15b A set of unwinder and tooling fixes:
- Ensure that the stack pointer on x86 is aligned again so that the
     unwinder does not read past the end of the stack
 
   - Discard .note.gnu.property section which has a pointlessly different
     alignment than the other note sections. That confuses tooling of all
     sorts including readelf, libbpf and pahole.
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Merge tag 'objtool-urgent-2023-05-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull unwinder fixes from Thomas Gleixner:
 "A set of unwinder and tooling fixes:

   - Ensure that the stack pointer on x86 is aligned again so that the
     unwinder does not read past the end of the stack

   - Discard .note.gnu.property section which has a pointlessly
     different alignment than the other note sections. That confuses
     tooling of all sorts including readelf, libbpf and pahole"

* tag 'objtool-urgent-2023-05-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/show_trace_log_lvl: Ensure stack pointer is aligned, again
  vmlinux.lds.h: Discard .note.gnu.property section
2023-05-28 07:33:29 -04:00
Linus Torvalds
d8f14b84fe Two fixes for debugobjects:
- Prevent that the allocation path wakes up kswapd. That's a long
     standing issue due to the GFP_ATOMIC allocation flag. As debug objects
     can be invoked from pretty much any context waking kswapd can end up
     in arbitrary lock chains versus the waitqueue lock.
 
   - Correct the explicit lockdep wait-type violation in
     debug_object_fill_pool().
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Merge tag 'core-debugobjects-2023-05-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull debugobjects fixes from Thomas Gleixner:
 "Two fixes for debugobjects:

   - Prevent the allocation path from waking up kswapd.

     That's a long standing issue due to the GFP_ATOMIC allocation flag.
     As debug objects can be invoked from pretty much any context waking
     kswapd can end up in arbitrary lock chains versus the waitqueue
     lock

   - Correct the explicit lockdep wait-type violation in
     debug_object_fill_pool()"

* tag 'core-debugobjects-2023-05-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  debugobjects: Don't wake up kswapd from fill_pool()
  debugobjects,locking: Annotate debug_object_fill_pool() wait type violation
2023-05-28 07:15:33 -04:00
Linus Torvalds
9bd5386c65 A set of fixes for interrupt chip drivers:
- Prevent loss of state in the MIPS GIC interrupt controller.
 
   - Disable pseudo NMIs on Mediatek based Chromebooks as they have
     firmware issues which cause instantenous chrashes and freezes
     wen pseudo NMIs are used.
 
   - Fix the error handling path in the MBIGEN driver and a defined but not
     used warning in the meson-gpio interrupt chip driver.
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Merge tag 'irq-urgent-2023-05-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull irq fixes from Thomas Gleixner:
 "A set of fixes for interrupt chip drivers:

   - Prevent loss of state in the MIPS GIC interrupt controller

   - Disable pseudo NMIs on Mediatek based Chromebooks as they have
     firmware issues which cause instantenous chrashes and freezes wen
     pseudo NMIs are used

   - Fix the error handling path in the MBIGEN driver and a defined but
     not used warning in the meson-gpio interrupt chip driver"

* tag 'irq-urgent-2023-05-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqchip/mbigen: Unify the error handling in mbigen_of_create_domain()
  irqchip/meson-gpio: Mark OF related data as maybe unused
  irqchip/mips-gic: Use raw spinlock for gic_lock
  irqchip/mips-gic: Don't touch vl_map if a local interrupt is not routable
  irqchip/gic-v3: Disable pseudo NMIs on Mediatek devices w/ firmware issues
  dt-bindings: interrupt-controller: arm,gic-v3: Add quirk for Mediatek SoCs w/ broken FW
2023-05-28 07:12:21 -04:00
Linus Torvalds
045049cb38 - fixes to get alchemy platform back in shape
- fix for initrd detection
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Merge tag 'mips-fixes_6.4_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux

Pull MIPS fixes from Thomas Bogendoerfer:

 - fixes to get alchemy platform back in shape

 - fix for initrd detection

* tag 'mips-fixes_6.4_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
  mips: Move initrd_start check after initrd address sanitisation.
  MIPS: Alchemy: fix dbdma2
  MIPS: Restore Au1300 support
  MIPS: unhide PATA_PLATFORM
2023-05-28 07:08:52 -04:00
Linus Torvalds
416839029e powerpc fixes for 6.4 #3
- Reinstate ARCH_FORCE_MAX_ORDER ranges to fix various breakage.
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Merge tag 'powerpc-6.4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fix from Michael Ellerman:

 - Reinstate ARCH_FORCE_MAX_ORDER ranges to fix various breakage

* tag 'powerpc-6.4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/mm: Reinstate ARCH_FORCE_MAX_ORDER ranges
2023-05-27 18:09:18 -07:00
Linus Torvalds
4e893b5aa4 xen: branch for v6.4-rc4
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Merge tag 'for-linus-6.4-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen fixes from Juergen Gross:

 - a double free fix in the Xen pvcalls backend driver

 - a fix for a regression causing the MSI related sysfs entries to not
   being created in Xen PV guests

 - a fix in the Xen blkfront driver for handling insane input data
   better

* tag 'for-linus-6.4-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  x86/pci/xen: populate MSI sysfs entries
  xen/pvcalls-back: fix double frees with pvcalls_new_active_socket()
  xen/blkfront: Only check REQ_FUA for writes
2023-05-27 09:42:56 -07:00
Linus Torvalds
957f3f8e53 Char/Misc fixes for 6.4-rc4
Here are some small driver fixes for 6.4-rc4.  They are just two
 different types:
   - binder fixes and reverts for reported problems and regressions in
     the binder "driver".
   - coresight driver fixes for reported problems.
 
 All of these have been in linux-next for over a week with no reported
 problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-6.4-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc fixes from Greg KH:
 "Here are some small driver fixes for 6.4-rc4. They are just two
  different types:

   - binder fixes and reverts for reported problems and regressions in
     the binder "driver".

   - coresight driver fixes for reported problems.

  All of these have been in linux-next for over a week with no reported
  problems"

* tag 'char-misc-6.4-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  binder: fix UAF of alloc->vma in race with munmap()
  binder: add lockless binder_alloc_(set|get)_vma()
  Revert "android: binder: stop saving a pointer to the VMA"
  Revert "binder_alloc: add missing mmap_lock calls when using the VMA"
  binder: fix UAF caused by faulty buffer cleanup
  coresight: perf: Release Coresight path when alloc trace id failed
  coresight: Fix signedness bug in tmc_etr_buf_insert_barrier_packet()
2023-05-27 09:14:43 -07:00
Linus Torvalds
49572d5361 cxl fixes for v6.4-rc4
- Stop trusting capacity data before the "media ready" indication
 
 - Add missing HDM decoder capability enable for the cold-plug case
 
 - Fix a debug message induced crash
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Merge tag 'cxl-fixes-6.4-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl

Pull compute express link fixes from Dan Williams:
 "The 'media ready' series prevents the driver from acting on bad
  capacity information, and it moves some checks earlier in the init
  sequence which impacts topics in the queue for 6.5.

  Additional hotplug testing uncovered a missing enable for memory
  decode. A debug crash fix is also included.

  Summary:

   - Stop trusting capacity data before the "media ready" indication

   - Add missing HDM decoder capability enable for the cold-plug case

   - Fix a debug message induced crash"

* tag 'cxl-fixes-6.4-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/cxl/cxl:
  cxl: Explicitly initialize resources when media is not ready
  cxl/port: Fix NULL pointer access in devm_cxl_add_port()
  cxl: Move cxl_await_media_ready() to before capacity info retrieval
  cxl: Wait Memory_Info_Valid before access memory related info
  cxl/port: Enable the HDM decoder capability for switch ports
2023-05-26 17:45:24 -07:00
Linus Torvalds
18713e8a68 ARM: SoC fixes for 6.4
There have not been a lot of fixes for for the soc tree in 6.4, but
 these have been sitting here for too long.
 
 For the devicetree side, there is one minor warning fix for vexpress,
 the rest all all for the the NXP i.MX platforms: SoC specific bugfixes
 for the iMX8 clocks and its USB-3.0 gadget device, as well as board
 specific fixes for regulators and the phy on some of the i.MX boards.
 
 The microchip risc-v and arm32 maintainers now also add a shared
 maintainer file entry for the arm64 parts.
 
 The remaining fixes are all for firmware drivers, addressing mistakes in
 the optee, scmi and ff-a firmware driver implementation, mostly in the
 error handling code, incorrect use of the alloc_workqueue() interface in
 SCMI, and compatibility with corner cases of the firmware implementation.
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Merge tag 'arm-fixes-6.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC fixes from Arnd Bergmann:
 "There have not been a lot of fixes for for the soc tree in 6.4, but
  these have been sitting here for too long.

  For the devicetree side, there is one minor warning fix for vexpress,
  the rest all all for the the NXP i.MX platforms: SoC specific bugfixes
  for the iMX8 clocks and its USB-3.0 gadget device, as well as board
  specific fixes for regulators and the phy on some of the i.MX boards.

  The microchip risc-v and arm32 maintainers now also add a shared
  maintainer file entry for the arm64 parts.

  The remaining fixes are all for firmware drivers, addressing mistakes
  in the optee, scmi and ff-a firmware driver implementation, mostly in
  the error handling code, incorrect use of the alloc_workqueue()
  interface in SCMI, and compatibility with corner cases of the firmware
  implementation"

* tag 'arm-fixes-6.4-1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc:
  MAINTAINERS: update arm64 Microchip entries
  arm64: dts: imx8: fix USB 3.0 Gadget Failure in QM & QXPB0 at super speed
  dt-binding: cdns,usb3: Fix cdns,on-chip-buff-size type
  arm64: dts: colibri-imx8x: delete adc1 and dsp
  arm64: dts: colibri-imx8x: fix iris pinctrl configuration
  arm64: dts: colibri-imx8x: move pinctrl property from SoM to eval board
  arm64: dts: colibri-imx8x: fix eval board pin configuration
  arm64: dts: imx8mp: Fix video clock parents
  ARM: dts: imx6qdl-mba6: Add missing pvcie-supply regulator
  ARM: dts: imx6ull-dhcor: Set and limit the mode for PMIC buck 1, 2 and 3
  arm64: dts: imx8mn-var-som: fix PHY detection bug by adding deassert delay
  arm64: dts: imx8mn: Fix video clock parents
  firmware: arm_ffa: Set reserved/MBZ fields to zero in the memory descriptors
  firmware: arm_ffa: Fix FFA device names for logical partitions
  firmware: arm_ffa: Fix usage of partition info get count flag
  firmware: arm_ffa: Check if ffa_driver remove is present before executing
  arm64: dts: arm: add missing cache properties
  ARM: dts: vexpress: add missing cache properties
  firmware: arm_scmi: Fix incorrect alloc_workqueue() invocation
  optee: fix uninited async notif value
2023-05-26 16:17:56 -07:00
Linus Torvalds
96f15fc6cc pci-v6.4-fixes-1
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Merge tag 'pci-v6.4-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci

Pull PCI fix from Bjorn Helgaas:

 - Quirk Ice Lake Root Ports to work around DPC log size issue (Mika
   Westerberg)

* tag 'pci-v6.4-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/pci/pci:
  PCI/DPC: Quirk PIO log size for Intel Ice Lake Root Ports
2023-05-26 16:06:57 -07:00
Linus Torvalds
8846af7547 VFIO fix for v6.4-rc4
- Test for and return error for invalid pfns through the pin pages
    interface. (Yan Zhao)
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Merge tag 'vfio-v6.4-rc4' of https://github.com/awilliam/linux-vfio

Pull VFIO fix from Alex Williamson:

 - Test for and return error for invalid pfns through the pin pages
   interface (Yan Zhao)

* tag 'vfio-v6.4-rc4' of https://github.com/awilliam/linux-vfio:
  vfio/type1: check pfn valid before converting to struct page
2023-05-26 15:57:14 -07:00
Linus Torvalds
a92c9ab69f block-6.4-2023-05-26
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Merge tag 'block-6.4-2023-05-26' of git://git.kernel.dk/linux

Pull block fixes from Jens Axboe:
 "A few fixes for the storage side of things:

   - Fix bio caching condition for passthrough IO (Anuj)

   - end-of-device check fix for zero sized devices (Christoph)

   - Update Paolo's email address

   - NVMe pull request via Keith with a single quirk addition

   - Fix regression in how wbt enablement is done (Yu)

   - Fix race in active queue accounting (Tian)"

* tag 'block-6.4-2023-05-26' of git://git.kernel.dk/linux:
  NVMe: Add MAXIO 1602 to bogus nid list.
  block: make bio_check_eod work for zero sized devices
  block: fix bio-cache for passthru IO
  block, bfq: update Paolo's address in maintainer list
  blk-mq: fix race condition in active queue accounting
  blk-wbt: fix that wbt can't be disabled by default
2023-05-26 15:04:54 -07:00
Linus Torvalds
6fae9129b1 io_uring-6.4-2023-05-26
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Merge tag 'io_uring-6.4-2023-05-26' of git://git.kernel.dk/linux

Pull io_uring fix from Jens Axboe:
 "Just a single fix for the conditional schedule with the SQPOLL thread,
  dropping the uring_lock if we do need to reschedule"

* tag 'io_uring-6.4-2023-05-26' of git://git.kernel.dk/linux:
  io_uring: unlock sqd->lock before sq thread release CPU
2023-05-26 15:00:04 -07:00
Linus Torvalds
77af1f2b9a Thermal control fix for 6.4-rc4
Fix a regression introduced inadvertently during the 6.3 cycle by a
 commit making the Intel int340x thermal driver use sysfs_emit_at()
 instead of scnprintf() (Srinivas Pandruvada).
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Merge tag 'thermal-6.4-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull thermal control fix from Rafael Wysocki:
 "Fix a regression introduced inadvertently during the 6.3 cycle by a
  commit making the Intel int340x thermal driver use sysfs_emit_at()
  instead of scnprintf() (Srinivas Pandruvada)"

* tag 'thermal-6.4-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  thermal: intel: int340x: Add new line for UUID display
2023-05-26 13:55:46 -07:00
Linus Torvalds
c551afcdc3 Power management fixes for 6.4-rc4
Fix 3 issues related to the ->fast_switch callback in the AMD
 P-state cpufreq driver (Gautham R. Shenoy and Wyes Karny).
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Merge tag 'pm-6.4-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael Wysocki:
 "Fix three issues related to the ->fast_switch callback in the AMD
  P-state cpufreq driver (Gautham R. Shenoy and Wyes Karny)"

* tag 'pm-6.4-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpufreq: amd-pstate: Update policy->cur in amd_pstate_adjust_perf()
  cpufreq: amd-pstate: Remove fast_switch_possible flag from active driver
  cpufreq: amd-pstate: Add ->fast_switch() callback
2023-05-26 13:45:43 -07:00
Dave Jiang
793a539ac7 cxl: Explicitly initialize resources when media is not ready
When media is not ready do not assume that the capacity information from
the identify command is valid, i.e. ->total_bytes
->partition_align_bytes ->{volatile,persistent}_only_bytes. Explicitly
zero out the capacity resources and exit early.

Given zero-init of those fields this patch is functionally equivalent to
the prior state, but it improves readability and robustness going
forward.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/168506118166.3004974.13523455340007852589.stgit@djiang5-mobl3
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2023-05-26 13:34:39 -07:00
Linus Torvalds
91a304340a gpio fixes for v6.4-rc4
- fix incorrect output in in-tree gpio tools
 - fix a shell coding issue in gpio-sim selftests
 - correctly set the permissions for debugfs attributes exposed by gpio-mockup
 - fix chip name and pin count in gpio-f7188x for one of the supported models
 - fix numberspace pollution when using dynamically and statically allocated
   GPIOs together
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Merge tag 'gpio-fixes-for-v6.4-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull gpio fixes from Bartosz Golaszewski:

 - fix incorrect output in in-tree gpio tools

 - fix a shell coding issue in gpio-sim selftests

 - correctly set the permissions for debugfs attributes exposed by
   gpio-mockup

 - fix chip name and pin count in gpio-f7188x for one of the supported
   models

 - fix numberspace pollution when using dynamically and statically
   allocated GPIOs together

* tag 'gpio-fixes-for-v6.4-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
  gpio-f7188x: fix chip name and pin count on Nuvoton chip
  gpiolib: fix allocation of mixed dynamic/static GPIOs
  gpio: mockup: Fix mode of debugfs files
  selftests: gpio: gpio-sim: Fix BUG: test FAILED due to recent change
  tools: gpio: fix debounce_period_us output of lsgpio
2023-05-26 13:29:16 -07:00
Linus Torvalds
b158dd941b for-6.4-rc3-tag
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Merge tag 'for-6.4-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux

Pull btrfs fixes from David Sterba:

 - handle memory allocation error in checksumming helper (reported by
   syzbot)

 - fix lockdep splat when aborting a transaction, add NOFS protection
   around invalidate_inode_pages2 that could allocate with GFP_KERNEL

 - reduce chances to hit an ENOSPC during scrub with RAID56 profiles

* tag 'for-6.4-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  btrfs: use nofs when cleaning up aborted transactions
  btrfs: handle memory allocation failure in btrfs_csum_one_bio
  btrfs: scrub: try harder to mark RAID56 block groups read-only
2023-05-26 13:21:38 -07:00
Linus Torvalds
b83ac44e02 drm fixes for 6.4-rc4
core:
 - fix drmm_mutex_init lock class
 
 mgag200:
 - fix gamma lut initialisation
 
 pl111:
 - fix FB depth on IMPD-1 framebuffer
 
 amdgpu:
 - Fix missing BO unlocking in KIQ error path
 - Avoid spurious secure display error messages
 - SMU13 fix
 - Fix an OD regression
 - GPU reset display IRQ warning fix
 - MST fix
 
 radeon:
 - Fix a DP regression
 
 i915:
 - PIPEDMC disabling fix for bigjoiner config
 
 panel:
 - fix aya neo air plus quirk
 
 sched:
 - remove redundant NULL check
 
 qaic:
 - fix NNC message corruption
 - Grab ch_lock during QAIC_ATTACH_SLICE_BO
 - Flush the transfer list again
 - Validate if BO is sliced before slicing
 - Validate user data before grabbing any lock
 - initialize ret variable to 0
 - silence some uninitialized variable warnings
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Merge tag 'drm-fixes-2023-05-26' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "This week's collection is pretty spread out, accel/qaic has a bunch of
  fixes, amdgpu, then lots of single fixes across a bunch of places.

  core:
   - fix drmm_mutex_init lock class

  mgag200:
   - fix gamma lut initialisation

  pl111:
   - fix FB depth on IMPD-1 framebuffer

  amdgpu:
   - Fix missing BO unlocking in KIQ error path
   - Avoid spurious secure display error messages
   - SMU13 fix
   - Fix an OD regression
   - GPU reset display IRQ warning fix
   - MST fix

  radeon:
   - Fix a DP regression

  i915:
   - PIPEDMC disabling fix for bigjoiner config

  panel:
   - fix aya neo air plus quirk

  sched:
   - remove redundant NULL check

  qaic:
   - fix NNC message corruption
   - Grab ch_lock during QAIC_ATTACH_SLICE_BO
   - Flush the transfer list again
   - Validate if BO is sliced before slicing
   - Validate user data before grabbing any lock
   - initialize ret variable to 0
   - silence some uninitialized variable warnings"

* tag 'drm-fixes-2023-05-26' of git://anongit.freedesktop.org/drm/drm:
  drm/amd/display: Have Payload Properly Created After Resume
  drm/amd/display: Fix warning in disabling vblank irq
  drm/amd/pm: Fix output of pp_od_clk_voltage
  drm/amd/pm: add missing NotifyPowerSource message mapping for SMU13.0.7
  drm/radeon: reintroduce radeon_dp_work_func content
  drm/amdgpu: don't enable secure display on incompatible platforms
  drm:amd:amdgpu: Fix missing buffer object unlock in failure path
  accel/qaic: Fix NNC message corruption
  accel/qaic: Grab ch_lock during QAIC_ATTACH_SLICE_BO
  accel/qaic: Flush the transfer list again
  accel/qaic: Validate if BO is sliced before slicing
  accel/qaic: Validate user data before grabbing any lock
  accel/qaic: initialize ret variable to 0
  drm/i915: Fix PIPEDMC disabling for a bigjoiner configuration
  drm: fix drmm_mutex_init()
  drm/sched: Remove redundant check
  drm: panel-orientation-quirks: Change Air's quirk to support Air Plus
  accel/qaic: silence some uninitialized variable warnings
  drm/pl111: Fix FB depth on IMPD-1 framebuffer
  drm/mgag200: Fix gamma lut not initialized.
2023-05-26 13:11:41 -07:00
Linus Torvalds
47ee3f1dd9 x86: re-introduce support for ERMS copies for user space accesses
I tried to streamline our user memory copy code fairly aggressively in
commit adfcf4231b ("x86: don't use REP_GOOD or ERMS for user memory
copies"), in order to then be able to clean up the code and inline the
modern FSRM case in commit 577e6a7fd5 ("x86: inline the 'rep movs' in
user copies for the FSRM case").

We had reports [1] of that causing regressions earlier with blogbench,
but that turned out to be a horrible benchmark for that case, and not a
sufficient reason for re-instating "rep movsb" on older machines.

However, now Eric Dumazet reported [2] a regression in performance that
seems to be a rather more real benchmark, where due to the removal of
"rep movs" a TCP stream over a 100Gbps network no longer reaches line
speed.

And it turns out that with the simplified the calling convention for the
non-FSRM case in commit 427fda2c8a ("x86: improve on the non-rep
'copy_user' function"), re-introducing the ERMS case is actually fairly
simple.

Of course, that "fairly simple" is glossing over several missteps due to
having to fight our assembler alternative code.  This code really wanted
to rewrite a conditional branch to have two different targets, but that
made objtool sufficiently unhappy that this instead just ended up doing
a choice between "jump to the unrolled loop, or use 'rep movsb'
directly".

Let's see if somebody finds a case where the kernel memory copies also
care (see commit 68674f94ff: "x86: don't use REP_GOOD or ERMS for
small memory copies").  But Eric does argue that the user copies are
special because networking tries to copy up to 32KB at a time, if
order-3 pages allocations are possible.

In-kernel memory copies are typically small, unless they are the special
"copy pages at a time" kind that still use "rep movs".

Link: https://lore.kernel.org/lkml/202305041446.71d46724-yujie.liu@intel.com/ [1]
Link: https://lore.kernel.org/lkml/CANn89iKUbyrJ=r2+_kK+sb2ZSSHifFZ7QkPLDpAtkJ8v4WUumA@mail.gmail.com/ [2]
Reported-and-tested-by: Eric Dumazet <edumazet@google.com>
Fixes: adfcf4231b ("x86: don't use REP_GOOD or ERMS for user memory copies")
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2023-05-26 12:34:20 -07:00
Jens Axboe
9491d01fbc Merge tag 'nvme-6.4-2023-05-26' of git://git.infradead.org/nvme into block-6.4
Pull NVMe fix from Keith:

"nvme fixes for 6.4

 One nvme quirk (Tatsuki)"

* tag 'nvme-6.4-2023-05-26' of git://git.infradead.org/nvme:
  NVMe: Add MAXIO 1602 to bogus nid list.
2023-05-26 09:46:01 -06:00
Tatsuki Sugiura
a3a9d63dcd NVMe: Add MAXIO 1602 to bogus nid list.
HIKSEMI FUTURE M.2 SSD uses the same dummy nguid and eui64.
I confirmed it with my two devices.

This patch marks the controller as NVME_QUIRK_BOGUS_NID.

---------------------------------------------------------
sugi@tempest:~% sudo nvme id-ctrl /dev/nvme0
NVME Identify Controller:
vid       : 0x1e4b
ssvid     : 0x1e4b
sn        : 30096022612
mn        : HS-SSD-FUTURE 2048G
fr        : SN10542
rab       : 0
ieee      : 000000
cmic      : 0
mdts      : 7
cntlid    : 0
ver       : 0x10400
rtd3r     : 0x7a120
rtd3e     : 0x1e8480
oaes      : 0x200
ctratt    : 0x2
rrls      : 0
cntrltype : 1
fguid     : 00000000-0000-0000-0000-000000000000
<snip...>
---------------------------------------------------------

---------------------------------------------------------
sugi@tempest:~% sudo nvme id-ns /dev/nvme0n1
NVME Identify Namespace 1:
<snip...>
nguid   : 00000000000000000000000000000000
eui64   : 0000000000000002
lbaf  0 : ms:0   lbads:9  rp:0 (in use)
---------------------------------------------------------

Signed-off-by: Tatsuki Sugiura <sugi@nemui.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
2023-05-26 08:21:50 -07:00
Arnd Bergmann
abf5422e82 Arm FF-A fixes for v6.4
Quite a few fixes to address set of assorted issues:
 1. NULL pointer dereference if the ffa driver doesn't provide remove()
    callback as it is currently executed unconditionally
 2. FF-A core probe failure on systems with v1.0 firmware as the new
    partition info get count flag is used unconditionally
 3. Failure to register more than one logical partition or service within
    the same physical partition as the device name contains only VM ID
    which will be same for all but each will have unique UUID.
 4. Rejection of certain memory interface transmissions by the receivers
    (secure partitions) as few MBZ fields are non-zero due to lack of
    explicit re-initialization of those fields
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Merge tag 'ffa-fixes-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux into arm/fixes

Arm FF-A fixes for v6.4

Quite a few fixes to address set of assorted issues:
1. NULL pointer dereference if the ffa driver doesn't provide remove()
   callback as it is currently executed unconditionally
2. FF-A core probe failure on systems with v1.0 firmware as the new
   partition info get count flag is used unconditionally
3. Failure to register more than one logical partition or service within
   the same physical partition as the device name contains only VM ID
   which will be same for all but each will have unique UUID.
4. Rejection of certain memory interface transmissions by the receivers
   (secure partitions) as few MBZ fields are non-zero due to lack of
   explicit re-initialization of those fields

* tag 'ffa-fixes-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux:
  firmware: arm_ffa: Set reserved/MBZ fields to zero in the memory descriptors
  firmware: arm_ffa: Fix FFA device names for logical partitions
  firmware: arm_ffa: Fix usage of partition info get count flag
  firmware: arm_ffa: Check if ffa_driver remove is present before executing

Link: https://lore.kernel.org/r/20230509143453.1188753-1-sudeep.holla@arm.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2023-05-26 16:49:15 +02:00
Dave Airlie
5502d1fab0 Merge tag 'drm-misc-fixes-2023-05-24' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes
drm-misc-fixes for v6.4-rc4:
- A few non-trivial fixes to qaic.
- Fix drmm_mutex_init always using same lock class.
- Fix pl111 fb depth.
- Fix uninitialised gamma lut in mgag200.
- Add Aya Neo Air Plus quirk.
- Trivial null check removal in scheduler.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/d19f748c-2c5b-8140-5b05-a8282dfef73e@linux.intel.com
2023-05-26 15:38:31 +10:00
Dave Airlie
13aa38f86e Merge tag 'amd-drm-fixes-6.4-2023-05-24' of https://gitlab.freedesktop.org/agd5f/linux into drm-fixes
amd-drm-fixes-6.4-2023-05-24:

amdgpu:
- Fix missing BO unlocking in KIQ error path
- Avoid spurious secure display error messages
- SMU13 fix
- Fix an OD regression
- GPU reset display IRQ warning fix
- MST fix

radeon:
- Fix a DP regression

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230524211238.7749-1-alexander.deucher@amd.com
2023-05-26 15:30:09 +10:00