| Age | Commit message (Collapse) | Author |
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The following has been observed when running stressng mmap since commit
b653db77350c ("mm: Clear page->private when splitting or migrating a page")
watchdog: BUG: soft lockup - CPU#75 stuck for 26s! [stress-ng:9546]
CPU: 75 PID: 9546 Comm: stress-ng Tainted: G E 6.0.0-revert-b653db77-fix+ #29 0357d79b60fb09775f678e4f3f64ef0579ad1374
Hardware name: SGI.COM C2112-4GP3/X10DRT-P-Series, BIOS 2.0a 05/09/2016
RIP: 0010:xas_descend+0x28/0x80
Code: cc cc 0f b6 0e 48 8b 57 08 48 d3 ea 83 e2 3f 89 d0 48 83 c0 04 48 8b 44 c6 08 48 89 77 18 48 89 c1 83 e1 03 48 83 f9 02 75 08 <48> 3d fd 00 00 00 76 08 88 57 12 c3 cc cc cc cc 48 c1 e8 02 89 c2
RSP: 0018:ffffbbf02a2236a8 EFLAGS: 00000246
RAX: ffff9cab7d6a0002 RBX: ffffe04b0af88040 RCX: 0000000000000002
RDX: 0000000000000030 RSI: ffff9cab60509b60 RDI: ffffbbf02a2236c0
RBP: 0000000000000000 R08: ffff9cab60509b60 R09: ffffbbf02a2236c0
R10: 0000000000000001 R11: ffffbbf02a223698 R12: 0000000000000000
R13: ffff9cab4e28da80 R14: 0000000000039c01 R15: ffff9cab4e28da88
FS: 00007fab89b85e40(0000) GS:ffff9cea3fcc0000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fab84e00000 CR3: 00000040b73a4003 CR4: 00000000003706e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
xas_load+0x3a/0x50
__filemap_get_folio+0x80/0x370
? put_swap_page+0x163/0x360
pagecache_get_page+0x13/0x90
__try_to_reclaim_swap+0x50/0x190
scan_swap_map_slots+0x31e/0x670
get_swap_pages+0x226/0x3c0
folio_alloc_swap+0x1cc/0x240
add_to_swap+0x14/0x70
shrink_page_list+0x968/0xbc0
reclaim_page_list+0x70/0xf0
reclaim_pages+0xdd/0x120
madvise_cold_or_pageout_pte_range+0x814/0xf30
walk_pgd_range+0x637/0xa30
__walk_page_range+0x142/0x170
walk_page_range+0x146/0x170
madvise_pageout+0xb7/0x280
? asm_common_interrupt+0x22/0x40
madvise_vma_behavior+0x3b7/0xac0
? find_vma+0x4a/0x70
? find_vma+0x64/0x70
? madvise_vma_anon_name+0x40/0x40
madvise_walk_vmas+0xa6/0x130
do_madvise+0x2f4/0x360
__x64_sys_madvise+0x26/0x30
do_syscall_64+0x5b/0x80
? do_syscall_64+0x67/0x80
? syscall_exit_to_user_mode+0x17/0x40
? do_syscall_64+0x67/0x80
? syscall_exit_to_user_mode+0x17/0x40
? do_syscall_64+0x67/0x80
? do_syscall_64+0x67/0x80
? common_interrupt+0x8b/0xa0
entry_SYSCALL_64_after_hwframe+0x63/0xcd
The problem can be reproduced with the mmtests config
config-workload-stressng-mmap. It does not always happen and when it
triggers is variable but it has happened on multiple machines.
The intent of commit b653db77350c patch was to avoid the case where
PG_private is clear but folio->private is not-NULL. However, THP tail
pages uses page->private for "swp_entry_t if folio_test_swapcache()" as
stated in the documentation for struct folio. This patch only clobbers
page->private for tail pages if the head page was not in swapcache and
warns once if page->private had an unexpected value.
Link: https://lkml.kernel.org/r/20221019134156.zjyyn5aownakvztf@techsingularity.net
Fixes: b653db77350c ("mm: Clear page->private when splitting or migrating a page")
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Yang Shi <shy828301@gmail.com>
Cc: Brian Foster <bfoster@redhat.com>
Cc: Dan Streetman <ddstreet@ieee.org>
Cc: Miaohe Lin <linmiaohe@huawei.com>
Cc: Oleksandr Natalenko <oleksandr@natalenko.name>
Cc: Seth Jennings <sjenning@redhat.com>
Cc: Vitaly Wool <vitaly.wool@konsulko.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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The hugetlb vma_lock structure hangs off the vm_private_data pointer of
sharable hugetlb vmas. The structure is vma specific and can not be
shared between vmas. At fork and various other times, vmas are duplicated
via vm_area_dup(). When this happens, the pointer in the newly created
vma must be cleared and the structure reallocated. Two hugetlb specific
routines deal with this hugetlb_dup_vma_private and hugetlb_vm_op_open.
Both routines are called for newly created vmas. hugetlb_dup_vma_private
would always clear the pointer and hugetlb_vm_op_open would allocate the
new vms_lock structure. This did not work in the case of this calling
sequence pointed out in [1].
move_vma
copy_vma
new_vma = vm_area_dup(vma);
new_vma->vm_ops->open(new_vma); --> new_vma has its own vma lock.
is_vm_hugetlb_page(vma)
clear_vma_resv_huge_pages
hugetlb_dup_vma_private --> vma->vm_private_data is set to NULL
When clearing hugetlb_dup_vma_private we actually leak the associated
vma_lock structure.
The vma_lock structure contains a pointer to the associated vma. This
information can be used in hugetlb_dup_vma_private and hugetlb_vm_op_open
to ensure we only clear the vm_private_data of newly created (copied)
vmas. In such cases, the vma->vma_lock->vma field will not point to the
vma.
Update hugetlb_dup_vma_private and hugetlb_vm_op_open to not clear
vm_private_data if vma->vma_lock->vma == vma. Also, log a warning if
hugetlb_vm_op_open ever encounters the case where vma_lock has already
been correctly allocated for the vma.
[1] https://lore.kernel.org/linux-mm/5154292a-4c55-28cd-0935-82441e512fc3@huawei.com/
Link: https://lkml.kernel.org/r/20221019201957.34607-1-mike.kravetz@oracle.com
Fixes: 131a79b474e9 ("hugetlb: fix vma lock handling during split vma and range unmapping")
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Reviewed-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: Axel Rasmussen <axelrasmussen@google.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: James Houghton <jthoughton@google.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mina Almasry <almasrymina@google.com>
Cc: Muchun Song <songmuchun@bytedance.com>
Cc: Naoya Horiguchi <naoya.horiguchi@linux.dev>
Cc: Pasha Tatashin <pasha.tatashin@soleen.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: Prakash Sangappa <prakash.sangappa@oracle.com>
Cc: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Try to avoid using the left over split page on the next request for a page
by calling __free_pages_ok() with FPI_TO_TAIL. This increases the
potential of defragmenting memory when it's used for a short period of
time.
Link: https://lkml.kernel.org/r/20220531185626.yvlmymbxyoe5vags@revolver
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Suggested-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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/proc/pid/smaps_rollup showed 0 kB for everything: now find first vma.
Link: https://lkml.kernel.org/r/3011bee7-182-97a2-1083-d5f5b688e54b@google.com
Fixes: c4c84f06285e ("fs/proc/task_mmu: stop using linked list and highest_vm_end")
Signed-off-by: Hugh Dickins <hughd@google.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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The h->*_huge_pages counters are protected by the hugetlb_lock, but
alloc_huge_page has a corner case where it can decrement the counter
outside of the lock.
This could lead to a corrupted value of h->resv_huge_pages, which we have
observed on our systems.
Take the hugetlb_lock before decrementing h->resv_huge_pages to avoid a
potential race.
Link: https://lkml.kernel.org/r/20221017202505.0e6a4fcd@imladris.surriel.com
Fixes: a88c76954804 ("mm: hugetlb: fix hugepage memory leak caused by wrong reserve count")
Signed-off-by: Rik van Riel <riel@surriel.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Glen McCready <gkmccready@meta.com>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Muchun Song <songmuchun@bytedance.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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mmap should return the start address of newly mapped area when successful.
On a successful merge of a VMA, the return address was changed and thus
was violating that expectation from userspace.
This is a restoration of functionality provided by 309d08d9b3a3
(mm/mmap.c: fix mmap return value when vma is merged after call_mmap()).
For completeness of fixing MAP_FIXED, implement the comments from the
previous discussion to never update the address and fail if the address
changes. Leaving the error as a WARN_ON() to avoid crashing the kernel.
Link: https://lkml.kernel.org/r/20221018191613.4133459-1-Liam.Howlett@oracle.com
Link: https://lore.kernel.org/all/Y06yk66SKxlrwwfb@lakrids/
Link: https://lore.kernel.org/all/20201203085350.22624-1-liuzixian4@huawei.com/
Fixes: 4dd1b84140c1 ("mm/mmap: use advanced maple tree API for mmap_region()")
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Reported-by: Mark Rutland <mark.rutland@arm.com>
Cc: Liu Zixian <liuzixian4@huawei.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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The code is OK, but it fools gcc.
mm/mmap.c:802 __vma_adjust() error: uninitialized symbol 'next_next'.
Fixes: 524e00b36e8c5 ("mm: remove rb tree.")
Reported-by: kernel test robot <lkp@intel.com>
Cc: Liam R. Howlett <Liam.Howlett@Oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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A memory leak in hugetlb_reserve_pages was reported in [1]. The root
cause was traced to an error path in mmap_region when mas_preallocate()
fails. In this case, the vma is freed after a successful call to
filesystem specific mmap. The hugetlbfs mmap routine may allocate data
structures pointed to by m_private_data. These need to be cleaned up by
the hugetlb vm_ops->close() routine.
The same issue was addressed by commit deb0f6562884 ("mm/mmap: undo
->mmap() when arch_validate_flags() fails") for the arch_validate_flags()
test. Go to the same close_and_free_vma label if mas_preallocate() fails.
[1] https://lore.kernel.org/linux-mm/CAKXUXMxf7OiCwbxib7MwfR4M1b5+b3cNTU7n5NV9Zm4967=FPQ@mail.gmail.com/
Link: https://lkml.kernel.org/r/20221018024945.415036-1-mike.kravetz@oracle.com
Fixes: d4af56c5c7c6 ("mm: start tracking VMAs with maple tree")
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Reported-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: Andrii Nakryiko <andrii@kernel.org>
Cc: Carlos Llamas <cmllamas@google.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Muchun Song <songmuchun@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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There is a spelling mistake in a Kconfig description. Fix it.
Link: https://lkml.kernel.org/r/20221007204339.2757753-1-colin.i.king@gmail.com
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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In ocfs2_mknod(), if error occurs after dinode successfully allocated,
ocfs2 i_links_count will not be 0.
So even though we clear inode i_nlink before iput in error handling, it
still won't wipe inode since we'll refresh inode from dinode during inode
lock. So just like clear inode i_nlink, we clear ocfs2 i_links_count as
well. Also do the same change for ocfs2_symlink().
Link: https://lkml.kernel.org/r/20221017130227.234480-2-joseph.qi@linux.alibaba.com
Signed-off-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Reported-by: Yan Wang <wangyan122@huawei.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>
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Commit b1529a41f777 "ocfs2: should reclaim the inode if
'__ocfs2_mknod_locked' returns an error" tried to reclaim the claimed
inode if __ocfs2_mknod_locked() fails later. But this introduce a race,
the freed bit may be reused immediately by another thread, which will
update dinode, e.g. i_generation. Then iput this inode will lead to BUG:
inode->i_generation != le32_to_cpu(fe->i_generation)
We could make this inode as bad, but we did want to do operations like
wipe in some cases. Since the claimed inode bit can only affect that an
dinode is missing and will return back after fsck, it seems not a big
problem. So just leave it as is by revert the reclaim logic.
Link: https://lkml.kernel.org/r/20221017130227.234480-1-joseph.qi@linux.alibaba.com
Fixes: b1529a41f777 ("ocfs2: should reclaim the inode if '__ocfs2_mknod_locked' returns an error")
Signed-off-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Reported-by: Yan Wang <wangyan122@huawei.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>
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Starting with GCC 12.1, the created .gcda format can't be read by gcov
tool. There are 2 significant changes to the .gcda file format that
need to be supported:
a) [gcov: Use system IO buffering]
(23eb66d1d46a34cb28c4acbdf8a1deb80a7c5a05) changed that all sizes in
the format are in bytes and not in words (4B)
b) [gcov: make profile merging smarter]
(72e0c742bd01f8e7e6dcca64042b9ad7e75979de) add a new checksum to the
file header.
Tested with GCC 7.5, 10.4, 12.2 and the current master.
Link: https://lkml.kernel.org/r/624bda92-f307-30e9-9aaa-8cc678b2dfb2@suse.cz
Signed-off-by: Martin Liska <mliska@suse.cz>
Tested-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Reviewed-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Inside the zs_destroy_pool() function, there can still be NULL size_class
pointers: if when the next size_class is allocated, inside
zs_create_pool() function, kzalloc will return NULL and handling the error
condition, zs_create_pool() will call zs_destroy_pool().
Link: https://lkml.kernel.org/r/20221013112825.61869-1-avromanov@sberdevices.ru
Fixes: f24263a5a076 ("zsmalloc: remove unnecessary size_class NULL check")
Signed-off-by: Alexey Romanov <avromanov@sberdevices.ru>
Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Fuzzing produced an invalid argument to vma_merge() which was caught by
the newly added verification of the number of VMAs being removed on
process exit. Analyzing the failure eventually resulted in finding an
issue with the search of a VMA that started at address 0, which caused an
underflow and thus the loss of many VMAs being tracked in the tree. Fix
the underflow by changing the search of the maple tree to use the start
address directly.
Link: https://lkml.kernel.org/r/20221015021135.2816178-1-Liam.Howlett@oracle.com
Fixes: 66850be55e8e ("mm/mempolicy: use vma iterator & maple state instead of vma linked list")
Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Reported-by: kernel test robot <oliver.sang@intel.com>
Link: https://lore.kernel.org/r/202210052318.5ad10912-oliver.sang@intel.com
Cc: Yu Zhao <yuzhao@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Update my email address for old entry and add a new entry for my
contribution while working with arm to continue support that work.
Link: https://lkml.kernel.org/r/20221014141016.539625-1-qyousef@layalina.io
Signed-off-by: Qais Yousef <qyousef@layalina.io>
Acked-by: Qais Yousef <qais.yousef@arm.com>
Acked-by: Qais Yousef <qsyousef@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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My time at Oracle is ending at the end of the month. Update my email
address accordingly.
Link: https://lkml.kernel.org/r/Y0a+6+5SHMdvUnpg@kili
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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A misplaced closing parenthesis caused the groupid/instanceid values to
be considered part of the ternary operator's condition instead of being
OR'd into the resulting value.
Fixes: f32898c94a10 ("drm/i915/xelpg: Add multicast steering")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Arun R Murthy <arun.r.murthy@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221019222437.3035182-1-matthew.d.roper@intel.com
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Pull drm fixes from Dave Airlie:
"Usual fixes for the week.
The amdgpu contains fixes for two regressions, one reported in
response to rc1 which broke on SI GPUs, and one gfx9 APU regression.
Otherwise it's mostly fixes for new IP, and some GPU reset fixes. vc4
is just HDMI fixes, and panfrost has some mnor types fixes.
Core:
- fix connector DDC pointer
- fix buffer overflow in format_helper_test
amdgpu:
- Mode2 reset fixes for Sienna Cichlid
- Revert broken fan speed sensor fix
- SMU 13.x fixes
- GC 11.x fixes
- RAS fixes
- SR-IOV fixes
- Fix BO move breakage on SI
- Misc compiler fixes
- Fix gfx9 APU regression caused by PCI AER fix
vc4:
- HDMI fixes
panfrost:
- compiler fixes"
* tag 'drm-fixes-2022-10-21' of git://anongit.freedesktop.org/drm/drm: (35 commits)
drm/amdgpu: fix sdma doorbell init ordering on APUs
drm/panfrost: replace endian-specific types with native ones
drm/panfrost: Remove type name from internal structs
drm/connector: Set DDC pointer in drmm_connector_init
drm: tests: Fix a buffer overflow in format_helper_test
drm/amdgpu: use DRM_SCHED_FENCE_DONT_PIPELINE for VM updates
drm/sched: add DRM_SCHED_FENCE_DONT_PIPELINE flag
drm/amdgpu: Fix for BO move issue
drm/amdgpu: dequeue mes scheduler during fini
drm/amd/pm: enable thermal alert on smu_v13_0_10
drm/amdgpu: Program GC registers through RLCG interface in gfx_v11/gmc_v11
drm/amdkfd: Fix type of reset_type parameter in hqd_destroy() callback
drm/amd/display: Increase frame size limit for display_mode_vba_util_32.o
drm/amd/pm: add SMU IP v13.0.4 IF version define to V7
drm/amd/pm: update SMU IP v13.0.4 driver interface version
drm/amd/pm: Init pm_attr_list when dpm is disabled
drm/amd/pm: disable cstate feature for gpu reset scenario
drm/amd/pm: fulfill SMU13.0.7 cstate control interface
drm/amd/pm: fulfill SMU13.0.0 cstate control interface
drm/amdgpu: Add sriov vf ras support in amdgpu_ras_asic_supported
...
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Including fixes from netfilter.
Current release - regressions:
- revert "net: fix cpu_max_bits_warn() usage in
netif_attrmask_next{,_and}"
- revert "net: sched: fq_codel: remove redundant resource cleanup in
fq_codel_init()"
- dsa: uninitialized variable in dsa_slave_netdevice_event()
- eth: sunhme: uninitialized variable in happy_meal_init()
Current release - new code bugs:
- eth: octeontx2: fix resource not freed after malloc
Previous releases - regressions:
- sched: fix return value of qdisc ingress handling on success
- sched: fix race condition in qdisc_graft()
- udp: update reuse->has_conns under reuseport_lock.
- tls: strp: make sure the TCP skbs do not have overlapping data
- hsr: avoid possible NULL deref in skb_clone()
- tipc: fix an information leak in tipc_topsrv_kern_subscr
- phylink: add mac_managed_pm in phylink_config structure
- eth: i40e: fix DMA mappings leak
- eth: hyperv: fix a RX-path warning
- eth: mtk: fix memory leaks
Previous releases - always broken:
- sched: cake: fix null pointer access issue when cake_init() fails"
* tag 'net-6.1-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (43 commits)
net: phy: dp83822: disable MDI crossover status change interrupt
net: sched: fix race condition in qdisc_graft()
net: hns: fix possible memory leak in hnae_ae_register()
wwan_hwsim: fix possible memory leak in wwan_hwsim_dev_new()
sfc: include vport_id in filter spec hash and equal()
genetlink: fix kdoc warnings
selftests: add selftest for chaining of tc ingress handling to egress
net: Fix return value of qdisc ingress handling on success
net: sched: sfb: fix null pointer access issue when sfb_init() fails
Revert "net: sched: fq_codel: remove redundant resource cleanup in fq_codel_init()"
net: sched: cake: fix null pointer access issue when cake_init() fails
ethernet: marvell: octeontx2 Fix resource not freed after malloc
netfilter: nf_tables: relax NFTA_SET_ELEM_KEY_END set flags requirements
netfilter: rpfilter/fib: Set ->flowic_uid correctly for user namespaces.
ionic: catch NULL pointer issue on reconfig
net: hsr: avoid possible NULL deref in skb_clone()
bnxt_en: fix memory leak in bnxt_nvm_test()
ip6mr: fix UAF issue in ip6mr_sk_done() when addrconf_init_net() failed
udp: Update reuse->has_conns under reuseport_lock.
net: ethernet: mediatek: ppe: Remove the unused function mtk_foe_entry_usable()
...
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git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata
Pull ata fixes from Damien Le Moal:
"Several minor fixes:
- Fix the module alias for the ahci_imx driver to get autoloading to
work (Alexander)
- Fix a potential array-index-out-of-bounds problem with the
enclosure managment support in the ahci driver (Kai-Heng)
- Several patches to fix compilation warnings thrown by clang in the
ahci_st, sata_rcar, ahci_brcm, ahci_xgene, ahci_imx and ahci_qoriq
drivers (me)"
* tag 'ata-6.1-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/libata:
ata: ahci_qoriq: Fix compilation warning
ata: ahci_imx: Fix compilation warning
ata: ahci_xgene: Fix compilation warning
ata: ahci_brcm: Fix compilation warning
ata: sata_rcar: Fix compilation warning
ata: ahci_st: Fix compilation warning
ata: ahci: Match EM_MAX_SLOTS with SATA_PMP_MAX_PORTS
ata: ahci-imx: Fix MODULE_ALIAS
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git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper updates from Mike Snitzer:
- Fix dm-bufio to use test_bit_acquire to properly test_bit on arches
with weaker memory ordering.
- DM core replace DMWARN with DMERR or DMCRIT for fatal errors.
- Enable WQ_HIGHPRI on DM verity target's verify_wq.
- Add documentation for DM verity's try_verify_in_tasklet option.
- Various typo and redundant word fixes in code and/or comments.
* tag 'for-6.1/dm-changes-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm clone: Fix typo in block_device format specifier
dm: remove unnecessary assignment statement in alloc_dev()
dm verity: Add documentation for try_verify_in_tasklet option
dm cache: delete the redundant word 'each' in comment
dm raid: fix typo in analyse_superblocks code comment
dm verity: enable WQ_HIGHPRI on verify_wq
dm raid: delete the redundant word 'that' in comment
dm: change from DMWARN to DMERR or DMCRIT for fatal errors
dm bufio: use the acquire memory barrier when testing for B_READING
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git://anongit.freedesktop.org/drm/drm-misc into drm-fixes
drm-misc-fixes for v6.1-rc2:
- Fix a buffer overflow in format_helper_test.
- Set DDC pointer in drmm_connector_init.
- Compiler fixes for panfrost.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/c4d05683-8ebe-93b8-d24c-d1d2c68f12c4@linux.intel.com
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Add a device tree node to describe the DisplayPort connector, and
connect it to the DPSUB output.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Michal Simek <michal.simek@amd.com>
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The DPSUB DT bindings now specify ports to model the connections with
the programmable logic and the DisplayPort output. Add them to the
device tree.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Michal Simek <michal.simek@amd.com>
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https://gitlab.freedesktop.org/agd5f/linux into drm-fixes
amd-drm-fixes-6.1-2022-10-20:
amdgpu:
- Fix gfx9 APU regression caused by PCI AER fix
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221020135225.562807-1-alexander.deucher@amd.com
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https://gitlab.freedesktop.org/agd5f/linux into drm-fixes
amd-drm-fixes-6.1-2022-10-19:
amdgpu:
- Mode2 reset fixes for Sienna Cichlid
- Revert broken fan speed sensor fix
- SMU 13.x fixes
- GC 11.x fixes
- RAS fixes
- SR-IOV fixes
- Fix BO move breakage on SI
- Misc compiler fixes
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221019191357.6208-1-alexander.deucher@amd.com
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git://anongit.freedesktop.org/drm/drm-misc into drm-fixes
Short summary of fixes pull:
* vc4: HDMI fixes
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/Y0gGdlujszCstDeP@linux-uq9g
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Reported-by: k2ci <kernel-bot@kylinos.cn>
Signed-off-by: Jiangshan Yi <yijiangshan@kylinos.cn>
Reviewed-by: Jean Delvare <jdelvare@suse.de> # for sis630
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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Since a7c01fa93aeb ("signal: break out of wait loops on kthread_stop()")
kthread_stop() started asserting a pending signal which wreaks havoc with
a few of our selftests. Mainly because they are not fully expecting to
handle signals, but also cutting the intended test runtimes short due
signal_pending() now returning true (via __igt_timeout), which therefore
breaks both the patterns of:
kthread_run()
..sleep for igt_timeout_ms to allow test to exercise stuff..
kthread_stop()
And check for errors recorded in the thread.
And also:
Main thread | Test thread
---------------+------------------------------
kthread_run() |
kthread_stop() | do stuff until __igt_timeout
| -- exits early due signal --
Where this kthread_stop() was assume would have a "join" semantics, which
it would have had if not the new signal assertion issue.
To recap, threads are now likely to catch a previously impossible
ERESTARTSYS or EINTR, marking the test as failed, or have a pointlessly
short run time.
To work around this start using kthread_work(er) API which provides
an explicit way of waiting for threads to exit. And for cases where
parent controls the test duration we add explicit signaling which threads
will now use instead of relying on kthread_should_stop().
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221020130841.3845791-1-tvrtko.ursulin@linux.intel.com
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Monitor's automata definition is only used locally, so make dot2c generate
a static definition.
Link: https://lore.kernel.org/all/202208210332.gtHXje45-lkp@intel.com
Link: https://lore.kernel.org/all/202208210358.6HH3OrVs-lkp@intel.com
Link: https://lkml.kernel.org/r/ffbb92010f643307766c9307fd42f416e5b85fa0.1661266564.git.bristot@kernel.org
Cc: Steven Rostedt <rostedt@goodmis.org>
Fixes: e3c9fc78f096 ("tools/rv: Add dot2c")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
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The fact that LMEMBAR is BAR2 should be of no real interest
to anyone. So use the name of the BAR rather than its index.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221005154159.18750-3-ville.syrjala@linux.intel.com
Acked-by: Matthew Auld <matthew.auld@intel.com>
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We use all kinds of weird names for our base address registers.
Take the names from the spec and stick to them to avoid confusing
everyone.
The only exceptions are IOBAR and LMEMBAR since naming them
IOBAR_BAR and LMEMBAR_BAR looks too funny, and yet I think
that adding the _BAR to GTTMMADR & co. (which don't have one
in the spec name) does make it more clear what they are.
And IOBAR vs. GTTMMADR_BAR also looks a bit too inconsistent
for my taste.
v2: Fix gvt build
v3: Add GEN2_IO_BAR for completeness
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221005195646.17201-1-ville.syrjala@linux.intel.com
Acked-by: Matthew Auld <matthew.auld@intel.com>
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clear_cpu_cap(&boot_cpu_data) is very similar to setup_clear_cpu_cap()
except that the latter also sets a bit in 'cpu_caps_cleared' which
later clears the same cap in secondary cpus, which is likely what is
meant here.
Fixes: 47125db27e47 ("perf/x86/intel/lbr: Support Architectural LBR")
Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
Link: https://lkml.kernel.org/r/20220718141123.136106-2-mlevitsk@redhat.com
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Different function signatures means they needs to be different
functions; otherwise CFI gets upset.
As triggered by the ftrace boot tests:
[] CFI failure at ftrace_return_to_handler+0xac/0x16c (target: ftrace_stub+0x0/0x14; expected type: 0x0a5d5347)
Fixes: 3c516f89e17e ("x86: Add support for CONFIG_CFI_CLANG")
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lkml.kernel.org/r/Y06dg4e1xF6JTdQq@hirez.programming.kicks-ass.net
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Remove the weird jumps to RET and simply use RET.
This then promotes ftrace_stub() to a real function; which becomes
important for kcfi.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220915111148.719080593@infradead.org
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
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We have the same code to determine the MMIO BAR in
two places. Collect it to a single place.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221005154159.18750-1-ville.syrjala@linux.intel.com
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
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Commit 8795e182b02d ("PCI/portdrv: Don't disable AER reporting in get_port_device_capability()")
uncovered a bug in amdgpu that required a reordering of the driver
init sequence to avoid accessing a special register on the GPU
before it was properly set up leading to an PCI AER error. This
reordering uncovered a different hw programming ordering dependency
in some APUs where the SDMA doorbells need to be programmed before
the GFX doorbells. To fix this, move the SDMA doorbell programming
back into the soc15 common code, but use the actual doorbell range
values directly rather than the values stored in the ring structure
since those will not be initialized at this point.
This is a partial revert, but with the doorbell assignment
fixed so the proper doorbell index is set before it's used.
Fixes: e3163bc8ffdfdb ("drm/amdgpu: move nbio sdma_doorbell_range() into sdma code for vega")
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: skhan@linuxfoundation.org
Cc: stable@vger.kernel.org
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Remove extraline left after intel_dp_configure_protocol_converter.
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221011063447.904649-3-ankit.k.nautiyal@intel.com
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For cases where DP has HDMI2.1 sink and FRL Link issues are detected,
reset the flag to state FRL trained status before restarting FRL
training.
Fixes: 9488a030ac91 ("drm/i915: Add support for enabling link status and recovery")
Cc: Swati Sharma <swati2.sharma@intel.com>
Cc: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Cc: Uma Shankar <uma.shankar@intel.com> (v2)
Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221011063447.904649-2-ankit.k.nautiyal@intel.com
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As previous commit, 'blk_trace_cleanup' will stop block trace if
block trace's state is 'Blktrace_running'.
So remove unnessary stop block trace in 'blk_trace_shutdown'.
Signed-off-by: Ye Bin <yebin10@huawei.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20221019033602.752383-4-yebin@huaweicloud.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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When test as follows:
step1: ioctl(sda, BLKTRACESETUP, &arg)
step2: ioctl(sda, BLKTRACESTART, NULL)
step3: ioctl(sda, BLKTRACETEARDOWN, NULL)
step4: ioctl(sda, BLKTRACESETUP, &arg)
Got issue as follows:
debugfs: File 'dropped' in directory 'sda' already present!
debugfs: File 'msg' in directory 'sda' already present!
debugfs: File 'trace0' in directory 'sda' already present!
And also find syzkaller report issue like "KASAN: use-after-free Read in relay_switch_subbuf"
"https://syzkaller.appspot.com/bug?id=13849f0d9b1b818b087341691be6cc3ac6a6bfb7"
If remove block trace without stop(BLKTRACESTOP) block trace, '__blk_trace_remove'
will just set 'q->blk_trace' with NULL. However, debugfs file isn't removed, so
will report file already present when call BLKTRACESETUP.
static int __blk_trace_remove(struct request_queue *q)
{
struct blk_trace *bt;
bt = rcu_replace_pointer(q->blk_trace, NULL,
lockdep_is_held(&q->debugfs_mutex));
if (!bt)
return -EINVAL;
if (bt->trace_state != Blktrace_running)
blk_trace_cleanup(q, bt);
return 0;
}
If do test as follows:
step1: ioctl(sda, BLKTRACESETUP, &arg)
step2: ioctl(sda, BLKTRACESTART, NULL)
step3: ioctl(sda, BLKTRACETEARDOWN, NULL)
step4: remove sda
There will remove debugfs directory which will remove recursively all file
under directory.
>> blk_release_queue
>> debugfs_remove_recursive(q->debugfs_dir)
So all files which created in 'do_blk_trace_setup' are removed, and
'dentry->d_inode' is NULL. But 'q->blk_trace' is still in 'running_trace_lock',
'trace_note_tsk' will traverse 'running_trace_lock' all nodes.
>>trace_note_tsk
>> trace_note
>> relay_reserve
>> relay_switch_subbuf
>> d_inode(buf->dentry)->i_size
To solve above issues, reference commit '5afedf670caf', call 'blk_trace_cleanup'
unconditionally in '__blk_trace_remove' and first stop block trace in
'blk_trace_cleanup'.
Signed-off-by: Ye Bin <yebin10@huawei.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20221019033602.752383-3-yebin@huaweicloud.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Introduce 'blk_trace_{start,stop}' helper. No functional changed.
Signed-off-by: Ye Bin <yebin10@huawei.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20221019033602.752383-2-yebin@huaweicloud.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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bio_put() with REQ_ALLOC_CACHE assumes that it's executed not from
an irq context. Let's add a warning if the invariant is not respected,
especially since there is a couple of places removing REQ_POLLED by hand
without also clearing REQ_ALLOC_CACHE.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/558d78313476c4e9c233902efa0092644c3d420a.1666122465.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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If the CPU mask allocation for a node fails, then the memory allocated for
the 'io_wqe' struct of the current node doesn't get freed on the error
handling path, since it has not yet been added to the 'wqes' array.
This was spotted when fuzzing v6.1-rc1 with Syzkaller:
BUG: memory leak
unreferenced object 0xffff8880093d5000 (size 1024):
comm "syz-executor.2", pid 7701, jiffies 4295048595 (age 13.900s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<00000000cb463369>] __kmem_cache_alloc_node+0x18e/0x720
[<00000000147a3f9c>] kmalloc_node_trace+0x2a/0x130
[<000000004e107011>] io_wq_create+0x7b9/0xdc0
[<00000000c38b2018>] io_uring_alloc_task_context+0x31e/0x59d
[<00000000867399da>] __io_uring_add_tctx_node.cold+0x19/0x1ba
[<000000007e0e7a79>] io_uring_setup.cold+0x1b80/0x1dce
[<00000000b545e9f6>] __x64_sys_io_uring_setup+0x5d/0x80
[<000000008a8a7508>] do_syscall_64+0x5d/0x90
[<000000004ac08bec>] entry_SYSCALL_64_after_hwframe+0x63/0xcd
Fixes: 0e03496d1967 ("io-wq: use private CPU mask")
Cc: stable@vger.kernel.org
Signed-off-by: Rafael Mendonca <rafaelmendsr@gmail.com>
Link: https://lore.kernel.org/r/20221020014710.902201-1-rafaelmendsr@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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it defined in d0edc2473be9d, but there's nowhere to use it,
so remove it.
Signed-off-by: Yuwei Guan <Yuwei.Guan@zeekrlife.com>
Acked-by: Paolo Valente <paolo.valente@linaro.org>
Link: https://lore.kernel.org/r/20221018030139.159-1-Yuwei.Guan@zeekrlife.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Commit c347a787e34cb (drbd: set ->bi_bdev in drbd_req_new) moved a
bio_set_dev call (which has since been removed) to "earlier", from
drbd_request_prepare to drbd_req_new.
The problem is that this accesses device->ldev->backing_bdev, which is
not NULL-checked at this point. When we don't have an ldev (i.e. when
the DRBD device is diskless), this leads to a null pointer deref.
So, only allocate the private_bio if we actually have a disk. This is
also a small optimization, since we don't clone the bio to only to
immediately free it again in the diskless case.
Fixes: c347a787e34cb ("drbd: set ->bi_bdev in drbd_req_new")
Co-developed-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com>
Signed-off-by: Christoph Böhmwalder <christoph.boehmwalder@linbit.com>
Co-developed-by: Joel Colledge <joel.colledge@linbit.com>
Signed-off-by: Joel Colledge <joel.colledge@linbit.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20221020085205.129090-1-christoph.boehmwalder@linbit.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Pull NVMe fixes from Christoph:
"nvme fixes for Linux 6.1
- fix nvme-hwmon for DMA non-cohehrent architectures (Serge Semin)
- add a nvme-hwmong maintainer (Christoph Hellwig)
- fix error pointer dereference in error handling (Dan Carpenter)
- fix invalid memory reference in nvmet_subsys_attr_qid_max_show
(Daniel Wagner)
- don't limit the DMA segment size in nvme-apple (Russell King)
- fix workqueue MEM_RECLAIM flushing dependency (Sagi Grimberg)
- disable write zeroes on various Kingston SSDs (Xander Li)"
* tag 'nvme-6.1-2022-10-22' of git://git.infradead.org/nvme:
nvmet: fix invalid memory reference in nvmet_subsys_attr_qid_max_show
nvmet: fix workqueue MEM_RECLAIM flushing dependency
nvme-hwmon: kmalloc the NVME SMART log buffer
nvme-hwmon: consistently ignore errors from nvme_hwmon_init
nvme: add Guenther as nvme-hwmon maintainer
nvme-apple: don't limit DMA segement size
nvme-pci: disable write zeroes on various Kingston SSD
nvme: fix error pointer dereference in error handling
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The test was constructed as a single function (test case) which checks
multiple conditions, calling the function that is tested multiple times
with different arguments.
This usually means that it can be easily converted into multiple test
cases.
Split igt_check_plane_state into two parameterized test cases,
drm_check_plane_state and drm_check_invalid_plane_state.
Passing output:
============================================================
============== drm_plane_helper (2 subtests) ===============
================== drm_check_plane_state ===================
[PASSED] clipping_simple
[PASSED] clipping_rotate_reflect
[PASSED] positioning_simple
[PASSED] upscaling
[PASSED] downscaling
[PASSED] rounding1
[PASSED] rounding2
[PASSED] rounding3
[PASSED] rounding4
============== [PASSED] drm_check_plane_state ==============
============== drm_check_invalid_plane_state ===============
[PASSED] positioning_invalid
[PASSED] upscaling_invalid
[PASSED] downscaling_invalid
========== [PASSED] drm_check_invalid_plane_state ==========
================ [PASSED] drm_plane_helper =================
============================================================
Testing complete. Ran 12 tests: passed: 12
v2: Add missing EXPECT/ASSERT (Maíra)
v3: Use single EXPECT insted of condition + KUNIT_FAILURE (Maíra)
v4: Rebase after "drm_test" rename
Signed-off-by: Michał Winiarski <michal.winiarski@intel.com>
Reviewed-by: Maíra Canal <mairacanal@riseup.net>
Signed-off-by: Maíra Canal <mairacanal@riseup.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20221020082135.779872-2-michal.winiarski@intel.com
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Currently the values are printed with debug log level.
Adjust the log level and link the output with the test by using kunit_err.
Example output:
foo: dst: 20x20+10+10, expected: 10x10+0+0
foo: EXPECTATION FAILED at drivers/gpu/drm/tests/drm_plane_helper_test.c:85
Signed-off-by: Michał Winiarski <michal.winiarski@intel.com>
Reviewed-by: Maíra Canal <mairacanal@riseup.net>
Signed-off-by: Maíra Canal <mairacanal@riseup.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20221020082135.779872-1-michal.winiarski@intel.com
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__le32 and __le64 types aren't portable and are not available on
FreeBSD (which uses the same uAPI).
Instead of attempting to always output little endian, just use native
endianness in the dumps. Tools can detect the endianness in use by
looking at the 'magic' field, but equally we don't expect big-endian to
be used with Mali (there are no known implementations out there).
Bug: https://gitlab.freedesktop.org/mesa/mesa/-/issues/7252
Fixes: 730c2bf4ad39 ("drm/panfrost: Add support for devcoredump")
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221017104602.142992-3-steven.price@arm.com
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