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1,234,434 commits
| Author | SHA1 | Message | Date | |
|---|---|---|---|---|
Peng Zhang
|
a2587a7e8d |
maple_tree: add test for mtree_dup()
Add test for mtree_dup(). Test by duplicating different maple trees and then comparing the two trees. Includes tests for duplicating full trees and memory allocation failures on different nodes. Link: https://lkml.kernel.org/r/20231027033845.90608-6-zhangpeng.00@bytedance.com Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Christian Brauner <brauner@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Mateusz Guzik <mjguzik@gmail.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Mike Christie <michael.christie@oracle.com> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Peng Zhang
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46c99e26f2 |
radix tree test suite: align kmem_cache_alloc_bulk() with kernel behavior.
When kmem_cache_alloc_bulk() fails to allocate, leave the freed pointers in the array. This enables a more accurate simulation of the kernel's behavior and allows for testing potential double-free scenarios. Link: https://lkml.kernel.org/r/20231027033845.90608-5-zhangpeng.00@bytedance.com Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com> Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Christian Brauner <brauner@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Mateusz Guzik <mjguzik@gmail.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Mike Christie <michael.christie@oracle.com> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Peng Zhang
|
fd32e4e9b7 |
maple_tree: introduce interfaces __mt_dup() and mtree_dup()
Introduce interfaces __mt_dup() and mtree_dup(), which are used to duplicate a maple tree. They duplicate a maple tree in Depth-First Search (DFS) pre-order traversal. It uses memcopy() to copy nodes in the source tree and allocate new child nodes in non-leaf nodes. The new node is exactly the same as the source node except for all the addresses stored in it. It will be faster than traversing all elements in the source tree and inserting them one by one into the new tree. The time complexity of these two functions is O(n). The difference between __mt_dup() and mtree_dup() is that mtree_dup() handles locks internally. Analysis of the average time complexity of this algorithm: For simplicity, let's assume that the maximum branching factor of all non-leaf nodes is 16 (in allocation mode, it is 10), and the tree is a full tree. Under the given conditions, if there is a maple tree with n elements, the number of its leaves is n/16. From bottom to top, the number of nodes in each level is 1/16 of the number of nodes in the level below. So the total number of nodes in the entire tree is given by the sum of n/16 + n/16^2 + n/16^3 + ... + 1. This is a geometric series, and it has log(n) terms with base 16. According to the formula for the sum of a geometric series, the sum of this series can be calculated as (n-1)/15. Each node has only one parent node pointer, which can be considered as an edge. In total, there are (n-1)/15-1 edges. This algorithm consists of two operations: 1. Traversing all nodes in DFS order. 2. For each node, making a copy and performing necessary modifications to create a new node. For the first part, DFS traversal will visit each edge twice. Let T(ascend) represent the cost of taking one step downwards, and T(descend) represent the cost of taking one step upwards. And both of them are constants (although mas_ascend() may not be, as it contains a loop, but here we ignore it and treat it as a constant). So the time spent on the first part can be represented as ((n-1)/15-1) * (T(ascend) + T(descend)). For the second part, each node will be copied, and the cost of copying a node is denoted as T(copy_node). For each non-leaf node, it is necessary to reallocate all child nodes, and the cost of this operation is denoted as T(dup_alloc). The behavior behind memory allocation is complex and not specific to the maple tree operation. Here, we assume that the time required for a single allocation is constant. Since the size of a node is fixed, both of these symbols are also constants. We can calculate that the time spent on the second part is ((n-1)/15) * T(copy_node) + ((n-1)/15 - n/16) * T(dup_alloc). Adding both parts together, the total time spent by the algorithm can be represented as: ((n-1)/15) * (T(ascend) + T(descend) + T(copy_node) + T(dup_alloc)) - n/16 * T(dup_alloc) - (T(ascend) + T(descend)) Let C1 = T(ascend) + T(descend) + T(copy_node) + T(dup_alloc) Let C2 = T(dup_alloc) Let C3 = T(ascend) + T(descend) Finally, the expression can be simplified as: ((16 * C1 - 15 * C2) / (15 * 16)) * n - (C1 / 15 + C3). This is a linear function, so the average time complexity is O(n). Link: https://lkml.kernel.org/r/20231027033845.90608-4-zhangpeng.00@bytedance.com Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com> Suggested-by: Liam R. Howlett <Liam.Howlett@oracle.com> Cc: Christian Brauner <brauner@kernel.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Mateusz Guzik <mjguzik@gmail.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Mike Christie <michael.christie@oracle.com> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Peng Zhang
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b2472efe43 |
maple_tree: introduce {mtree,mas}_lock_nested()
In some cases, nested locks may be needed, so {mtree,mas}_lock_nested is
introduced. For example, when duplicating maple tree, we need to hold the
locks of two trees, in which case nested locks are needed.
At the same time, add the definition of spin_lock_nested() in tools for
testing.
Link: https://lkml.kernel.org/r/20231027033845.90608-3-zhangpeng.00@bytedance.com
Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Mateusz Guzik <mjguzik@gmail.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Mike Christie <michael.christie@oracle.com>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Peng Zhang
|
4f2267b58a |
maple_tree: add mt_free_one() and mt_attr() helpers
Patch series "Introduce __mt_dup() to improve the performance of fork()", v7.
This series introduces __mt_dup() to improve the performance of fork().
During the duplication process of mmap, all VMAs are traversed and
inserted one by one into the new maple tree, causing the maple tree to be
rebalanced multiple times. Balancing the maple tree is a costly
operation. To duplicate VMAs more efficiently, mtree_dup() and __mt_dup()
are introduced for the maple tree. They can efficiently duplicate a maple
tree.
Here are some algorithmic details about {mtree,__mt}_dup(). We perform a
DFS pre-order traversal of all nodes in the source maple tree. During
this process, we fully copy the nodes from the source tree to the new
tree. This involves memory allocation, and when encountering a new node,
if it is a non-leaf node, all its child nodes are allocated at once.
This idea was originally from Liam R. Howlett's Maple Tree Work email,
and I added some of my own ideas to implement it. Some previous
discussions can be found in [1]. For a more detailed analysis of the
algorithm, please refer to the logs for patch [3/10] and patch [10/10].
There is a "spawn" in byte-unixbench[2], which can be used to test the
performance of fork(). I modified it slightly to make it work with
different number of VMAs.
Below are the test results. The first row shows the number of VMAs. The
second and third rows show the number of fork() calls per ten seconds,
corresponding to next-20231006 and the this patchset, respectively. The
test results were obtained with CPU binding to avoid scheduler load
balancing that could cause unstable results. There are still some
fluctuations in the test results, but at least they are better than the
original performance.
21 121 221 421 821 1621 3221 6421 12821 25621 51221
112100 76261 54227 34035 20195 11112 6017 3161 1606 802 393
114558 83067 65008 45824 28751 16072 8922 4747 2436 1233 599
2.19% 8.92% 19.88% 34.64% 42.37% 44.64% 48.28% 50.17% 51.68% 53.74% 52.42%
Thanks to Liam and Matthew for the review.
This patch (of 10):
Add two helpers:
1. mt_free_one(), used to free a maple node.
2. mt_attr(), used to obtain the attributes of maple tree.
Link: https://lkml.kernel.org/r/20231027033845.90608-1-zhangpeng.00@bytedance.com
Link: https://lkml.kernel.org/r/20231027033845.90608-2-zhangpeng.00@bytedance.com
Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Mateusz Guzik <mjguzik@gmail.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Mike Christie <michael.christie@oracle.com>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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Li Zhijian
|
23e9f01389 |
mm/vmstat: move pgdemote_* to per-node stats
Demotion will migrate pages across nodes. Previously, only the global demotion statistics were accounted for. Changed them to per-node statistics, making it easier to observe where demotion occurs on each node. This will help to identify which nodes are under pressure. This patch also make pgdemote_* behind CONFIG_NUMA_BALANCING, since demotion is not available for !CONFIG_NUMA_BALANCING With this patch, here is a sample where node0 node1 are DRAM, node3 is PMEM: Global stats: $ grep demote /proc/vmstat pgdemote_kswapd 254288 pgdemote_direct 113497 pgdemote_khugepaged 0 Per-node stats: $ grep demote /sys/devices/system/node/node0/vmstat # demotion source pgdemote_kswapd 68454 pgdemote_direct 83431 pgdemote_khugepaged 0 $ grep demote /sys/devices/system/node/node1/vmstat # demotion source pgdemote_kswapd 185834 pgdemote_direct 30066 pgdemote_khugepaged 0 $ grep demote /sys/devices/system/node/node3/vmstat # demotion target pgdemote_kswapd 0 pgdemote_direct 0 pgdemote_khugepaged 0 Link: https://lkml.kernel.org/r/20231103031450.1456523-1-lizhijian@fujitsu.com Signed-off-by: Li Zhijian <lizhijian@fujitsu.com> Acked-by: "Huang, Ying" <ying.huang@intel.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: "Rafael J. Wysocki" <rafael@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Andrew Morton
|
0c92218f4e | Merge branch 'master' into mm-hotfixes-stable | ||
Jiexun Wang
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b2f557a21b |
mm/madvise: add cond_resched() in madvise_cold_or_pageout_pte_range()
I conducted real-time testing and observed that madvise_cold_or_pageout_pte_range() causes significant latency under memory pressure, which can be effectively reduced by adding cond_resched() within the loop. I tested on the LicheePi 4A board using Cylictest for latency testing and Ftrace for latency tracing. The board uses TH1520 processor and has a memory size of 8GB. The kernel version is 6.5.0 with the PREEMPT_RT patch applied. The script I tested is as follows: echo wakeup_rt > /sys/kernel/tracing/current_tracer echo 1 > /sys/kernel/tracing/tracing_on echo 0 > /sys/kernel/tracing/tracing_max_latency stress-ng --vm 8 --vm-bytes 2G & cyclictest --mlockall --smp --priority=99 --distance=0 --duration=30m echo 0 > /sys/kernel/tracing/tracing_on cat /sys/kernel/tracing/trace The tracing results before modification are as follows: # tracer: wakeup_rt # # wakeup_rt latency trace v1.1.5 on 6.5.0-rt6-r1208-00003-g999d221864bf # -------------------------------------------------------------------- # latency: 2552 us, #6/6, CPU#3 | (M:preempt_rt VP:0, KP:0, SP:0 HP:0 #P:4) # ----------------- # | task: cyclictest-196 (uid:0 nice:0 policy:1 rt_prio:99) # ----------------- # # _--------=> CPU# # / _-------=> irqs-off/BH-disabled # | / _------=> need-resched # || / _-----=> need-resched-lazy # ||| / _----=> hardirq/softirq # |||| / _---=> preempt-depth # ||||| / _--=> preempt-lazy-depth # |||||| / _-=> migrate-disable # ||||||| / delay # cmd pid |||||||| time | caller # \ / |||||||| \ | / stress-n-206 3dn.h512 2us : 206:120:R + [003] 196: 0:R cyclictest stress-n-206 3dn.h512 7us : <stack trace> => __ftrace_trace_stack => __trace_stack => probe_wakeup => ttwu_do_activate => try_to_wake_up => wake_up_process => hrtimer_wakeup => __hrtimer_run_queues => hrtimer_interrupt => riscv_timer_interrupt => handle_percpu_devid_irq => generic_handle_domain_irq => riscv_intc_irq => handle_riscv_irq => do_irq stress-n-206 3dn.h512 9us#: 0 stress-n-206 3d...3.. 2544us : __schedule stress-n-206 3d...3.. 2545us : 206:120:R ==> [003] 196: 0:R cyclictest stress-n-206 3d...3.. 2551us : <stack trace> => __ftrace_trace_stack => __trace_stack => probe_wakeup_sched_switch => __schedule => preempt_schedule => migrate_enable => rt_spin_unlock => madvise_cold_or_pageout_pte_range => walk_pgd_range => __walk_page_range => walk_page_range => madvise_pageout => madvise_vma_behavior => do_madvise => sys_madvise => do_trap_ecall_u => ret_from_exception The tracing results after modification are as follows: # tracer: wakeup_rt # # wakeup_rt latency trace v1.1.5 on 6.5.0-rt6-r1208-00004-gca3876fc69a6-dirty # -------------------------------------------------------------------- # latency: 1689 us, #6/6, CPU#0 | (M:preempt_rt VP:0, KP:0, SP:0 HP:0 #P:4) # ----------------- # | task: cyclictest-217 (uid:0 nice:0 policy:1 rt_prio:99) # ----------------- # # _--------=> CPU# # / _-------=> irqs-off/BH-disabled # | / _------=> need-resched # || / _-----=> need-resched-lazy # ||| / _----=> hardirq/softirq # |||| / _---=> preempt-depth # ||||| / _--=> preempt-lazy-depth # |||||| / _-=> migrate-disable # ||||||| / delay # cmd pid |||||||| time | caller # \ / |||||||| \ | / stress-n-232 0dn.h413 1us+: 232:120:R + [000] 217: 0:R cyclictest stress-n-232 0dn.h413 12us : <stack trace> => __ftrace_trace_stack => __trace_stack => probe_wakeup => ttwu_do_activate => try_to_wake_up => wake_up_process => hrtimer_wakeup => __hrtimer_run_queues => hrtimer_interrupt => riscv_timer_interrupt => handle_percpu_devid_irq => generic_handle_domain_irq => riscv_intc_irq => handle_riscv_irq => do_irq stress-n-232 0dn.h413 19us#: 0 stress-n-232 0d...3.. 1671us : __schedule stress-n-232 0d...3.. 1676us+: 232:120:R ==> [000] 217: 0:R cyclictest stress-n-232 0d...3.. 1687us : <stack trace> => __ftrace_trace_stack => __trace_stack => probe_wakeup_sched_switch => __schedule => preempt_schedule => migrate_enable => free_unref_page_list => release_pages => free_pages_and_swap_cache => tlb_batch_pages_flush => tlb_flush_mmu => unmap_page_range => unmap_vmas => unmap_region => do_vmi_align_munmap.constprop.0 => do_vmi_munmap => __vm_munmap => sys_munmap => do_trap_ecall_u => ret_from_exception After the modification, the cause of maximum latency is no longer madvise_cold_or_pageout_pte_range(), so this modification can reduce the latency caused by madvise_cold_or_pageout_pte_range(). Currently the madvise_cold_or_pageout_pte_range() function exhibits significant latency under memory pressure, which can be effectively reduced by adding cond_resched() within the loop. When the batch_count reaches SWAP_CLUSTER_MAX, we reschedule the task to ensure fairness and avoid long lock holding times. Link: https://lkml.kernel.org/r/85363861af65fac66c7a98c251906afc0d9c8098.1695291046.git.wangjiexun@tinylab.org Signed-off-by: Jiexun Wang <wangjiexun@tinylab.org> Cc: Zhangjin Wu <falcon@tinylab.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Ryusuke Konishi
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675abf8df1 |
nilfs2: prevent WARNING in nilfs_sufile_set_segment_usage()
If nilfs2 reads a disk image with corrupted segment usage metadata, and its segment usage information is marked as an error for the segment at the write location, nilfs_sufile_set_segment_usage() can trigger WARN_ONs during log writing. Segments newly allocated for writing with nilfs_sufile_alloc() will not have this error flag set, but this unexpected situation will occur if the segment indexed by either nilfs->ns_segnum or nilfs->ns_nextnum (active segment) was marked in error. Fix this issue by inserting a sanity check to treat it as a file system corruption. Since error returns are not allowed during the execution phase where nilfs_sufile_set_segment_usage() is used, this inserts the sanity check into nilfs_sufile_mark_dirty() which pre-reads the buffer containing the segment usage record to be updated and sets it up in a dirty state for writing. In addition, nilfs_sufile_set_segment_usage() is also called when canceling log writing and undoing segment usage update, so in order to avoid issuing the same kernel warning in that case, in case of cancellation, avoid checking the error flag in nilfs_sufile_set_segment_usage(). Link: https://lkml.kernel.org/r/20231205085947.4431-1-konishi.ryusuke@gmail.com Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com> Reported-by: syzbot+14e9f834f6ddecece094@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=14e9f834f6ddecece094 Tested-by: Ryusuke Konishi <konishi.ryusuke@gmail.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Sidhartha Kumar
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4a3ef6be03 |
mm/hugetlb: have CONFIG_HUGETLB_PAGE select CONFIG_XARRAY_MULTI
After commit |
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Florian Fainelli
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801a2b1b49 |
scripts/gdb: fix lx-device-list-bus and lx-device-list-class
After the conversion to bus_to_subsys() and class_to_subsys(), the gdb
scripts listing the system buses and classes respectively was broken, fix
those by returning the subsys_priv pointer and have the various caller
de-reference either the 'bus' or 'class' structure members accordingly.
Link: https://lkml.kernel.org/r/20231130043317.174188-1-florian.fainelli@broadcom.com
Fixes:
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Bagas Sanjaya
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bc220fe709 |
MAINTAINERS: drop Antti Palosaari
He is currently inactive (last message from him is two years ago [1]). His media tree [2] is also dormant (latest activity is 6 years ago), yet his site is still online [3]. Drop him from MAINTAINERS and add CREDITS entry for him. We thank him for maintaining various DVB drivers. [1]: https://lore.kernel.org/all/660772b3-0597-02db-ed94-c6a9be04e8e8@iki.fi/ [2]: https://git.linuxtv.org/anttip/media_tree.git/ [3]: https://palosaari.fi/linux/ Link: https://lkml.kernel.org/r/20231130083848.5396-1-bagasdotme@gmail.com Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com> Acked-by: Antti Palosaari <crope@iki.fi> Cc: Hans Verkuil <hverkuil-cisco@xs4all.nl> Cc: Lukas Bulwahn <lukas.bulwahn@gmail.com> Cc: Mauro Carvalho Chehab <mchehab@kernel.org> Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Su Hui
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73424d00dc |
highmem: fix a memory copy problem in memcpy_from_folio
Clang static checker complains that value stored to 'from' is never read.
And memcpy_from_folio() only copy the last chunk memory from folio to
destination. Use 'to += chunk' to replace 'from += chunk' to fix this
typo problem.
Link: https://lkml.kernel.org/r/20231130034017.1210429-1-suhui@nfschina.com
Fixes:
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Ryusuke Konishi
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d61d0ab573 |
nilfs2: fix missing error check for sb_set_blocksize call
When mounting a filesystem image with a block size larger than the page size, nilfs2 repeatedly outputs long error messages with stack traces to the kernel log, such as the following: getblk(): invalid block size 8192 requested logical block size: 512 ... Call Trace: dump_stack_lvl+0x92/0xd4 dump_stack+0xd/0x10 bdev_getblk+0x33a/0x354 __breadahead+0x11/0x80 nilfs_search_super_root+0xe2/0x704 [nilfs2] load_nilfs+0x72/0x504 [nilfs2] nilfs_mount+0x30f/0x518 [nilfs2] legacy_get_tree+0x1b/0x40 vfs_get_tree+0x18/0xc4 path_mount+0x786/0xa88 __ia32_sys_mount+0x147/0x1a8 __do_fast_syscall_32+0x56/0xc8 do_fast_syscall_32+0x29/0x58 do_SYSENTER_32+0x15/0x18 entry_SYSENTER_32+0x98/0xf1 ... This overloads the system logger. And to make matters worse, it sometimes crashes the kernel with a memory access violation. This is because the return value of the sb_set_blocksize() call, which should be checked for errors, is not checked. The latter issue is due to out-of-buffer memory being accessed based on a large block size that caused sb_set_blocksize() to fail for buffers read with the initial minimum block size that remained unupdated in the super_block structure. Since nilfs2 mkfs tool does not accept block sizes larger than the system page size, this has been overlooked. However, it is possible to create this situation by intentionally modifying the tool or by passing a filesystem image created on a system with a large page size to a system with a smaller page size and mounting it. Fix this issue by inserting the expected error handling for the call to sb_set_blocksize(). Link: https://lkml.kernel.org/r/20231129141547.4726-1-konishi.ryusuke@gmail.com Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com> Tested-by: Ryusuke Konishi <konishi.ryusuke@gmail.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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Baoquan He
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dccf78d39f |
kernel/Kconfig.kexec: drop select of KEXEC for CRASH_DUMP
Ignat Korchagin complained that a potential config regression was introduced by commit |
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Andy Shevchenko
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8e92157d7f |
units: add missing header
BITS_PER_BYTE is defined in bits.h.
Link: https://lkml.kernel.org/r/20231128174404.393393-1-andriy.shevchenko@linux.intel.com
Fixes:
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Baoquan He
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4e9e2e4c65 |
drivers/base/cpu: crash data showing should depends on KEXEC_CORE
After commit |
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SeongJae Park
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7d6fa31a2f |
mm/damon/sysfs-schemes: add timeout for update_schemes_tried_regions
If a scheme is set to not applied to any monitoring target region for any
reasons including the target access pattern, quota, filters, or
watermarks, writing 'update_schemes_tried_regions' to 'state' DAMON sysfs
file can indefinitely hang. Fix the case by implementing a timeout for
the operation. The time limit is two apply intervals of each scheme.
Link: https://lkml.kernel.org/r/20231124213840.39157-1-sj@kernel.org
Fixes:
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Kuan-Ying Lee
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854f2764b5 |
scripts/gdb/tasks: fix lx-ps command error
Since commit |
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Peter Xu
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97219cc358 |
mm/Kconfig: make userfaultfd a menuconfig
PTE_MARKER_UFFD_WP is a subconfig for userfaultfd. To make it clear, switch to use menuconfig for userfaultfd. Link: https://lkml.kernel.org/r/20231123224204.1060152-1-peterx@redhat.com Signed-off-by: Peter Xu <peterx@redhat.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Axel Rasmussen <axelrasmussen@google.com> Cc: Mike Rapoport (IBM) <rppt@kernel.org> Cc: Peter Xu <peterx@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
Nico Pache
|
f39fb633fe |
selftests/mm: prevent duplicate runs caused by TEST_GEN_PROGS
Commit
|
||
|
SeongJae Park
|
1f3730fd9e |
mm/damon/core: copy nr_accesses when splitting region
Regions split function ('damon_split_region_at()') is called at the
beginning of an aggregation interval, and when DAMOS applying the actions
and charging quota. Because 'nr_accesses' fields of all regions are reset
at the beginning of each aggregation interval, and DAMOS was applying the
action at the end of each aggregation interval, there was no need to copy
the 'nr_accesses' field to the split-out region.
However, commit
|
||
Ming Lei
|
0263f92fad |
lib/group_cpus.c: avoid acquiring cpu hotplug lock in group_cpus_evenly
group_cpus_evenly() could be part of storage driver's error handler, such as nvme driver, when may happen during CPU hotplug, in which storage queue has to drain its pending IOs because all CPUs associated with the queue are offline and the queue is becoming inactive. And handling IO needs error handler to provide forward progress. Then deadlock is caused: 1) inside CPU hotplug handler, CPU hotplug lock is held, and blk-mq's handler is waiting for inflight IO 2) error handler is waiting for CPU hotplug lock 3) inflight IO can't be completed in blk-mq's CPU hotplug handler because error handling can't provide forward progress. Solve the deadlock by not holding CPU hotplug lock in group_cpus_evenly(), in which two stage spreads are taken: 1) the 1st stage is over all present CPUs; 2) the end stage is over all other CPUs. Turns out the two stage spread just needs consistent 'cpu_present_mask', and remove the CPU hotplug lock by storing it into one local cache. This way doesn't change correctness, because all CPUs are still covered. Link: https://lkml.kernel.org/r/20231120083559.285174-1-ming.lei@redhat.com Signed-off-by: Ming Lei <ming.lei@redhat.com> Reported-by: Yi Zhang <yi.zhang@redhat.com> Reported-by: Guangwu Zhang <guazhang@redhat.com> Tested-by: Guangwu Zhang <guazhang@redhat.com> Reviewed-by: Chengming Zhou <zhouchengming@bytedance.com> Reviewed-by: Jens Axboe <axboe@kernel.dk> Cc: Keith Busch <kbusch@kernel.org> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
Heiko Carstens
|
ee34db3f27 |
checkstack: fix printed address
All addresses printed by checkstack have an extra incorrect 0 appended at the end. This was introduced with commit |
||
Sumanth Korikkar
|
f42ce5f087 |
mm/memory_hotplug: fix error handling in add_memory_resource()
In add_memory_resource(), creation of memory block devices occurs after
successful call to arch_add_memory(). However, creation of memory block
devices could fail. In that case, arch_remove_memory() is called to
perform necessary cleanup.
Currently with or without altmap support, arch_remove_memory() is always
passed with altmap set to NULL during error handling. This leads to
freeing of struct pages using free_pages(), eventhough the allocation
might have been performed with altmap support via
altmap_alloc_block_buf().
Fix the error handling by passing altmap in arch_remove_memory(). This
ensures the following:
* When altmap is disabled, deallocation of the struct pages array occurs
via free_pages().
* When altmap is enabled, deallocation occurs via vmem_altmap_free().
Link: https://lkml.kernel.org/r/20231120145354.308999-3-sumanthk@linux.ibm.com
Fixes:
|
||
|
Sumanth Korikkar
|
001002e737 |
mm/memory_hotplug: add missing mem_hotplug_lock
From Documentation/core-api/memory-hotplug.rst:
When adding/removing/onlining/offlining memory or adding/removing
heterogeneous/device memory, we should always hold the mem_hotplug_lock
in write mode to serialise memory hotplug (e.g. access to global/zone
variables).
mhp_(de)init_memmap_on_memory() functions can change zone stats and
struct page content, but they are currently called w/o the
mem_hotplug_lock.
When memory block is being offlined and when kmemleak goes through each
populated zone, the following theoretical race conditions could occur:
CPU 0: | CPU 1:
memory_offline() |
-> offline_pages() |
-> mem_hotplug_begin() |
... |
-> mem_hotplug_done() |
| kmemleak_scan()
| -> get_online_mems()
| ...
-> mhp_deinit_memmap_on_memory() |
[not protected by mem_hotplug_begin/done()]|
Marks memory section as offline, | Retrieves zone_start_pfn
poisons vmemmap struct pages and updates | and struct page members.
the zone related data |
| ...
| -> put_online_mems()
Fix this by ensuring mem_hotplug_lock is taken before performing
mhp_init_memmap_on_memory(). Also ensure that
mhp_deinit_memmap_on_memory() holds the lock.
online/offline_pages() are currently only called from
memory_block_online/offline(), so it is safe to move the locking there.
Link: https://lkml.kernel.org/r/20231120145354.308999-2-sumanthk@linux.ibm.com
Fixes:
|
||
Chester Lin
|
c540b03828 |
.mailmap: add a new address mapping for Chester Lin
My company email address is going to be disabled so let's create a mapping that links to my private/community email just in case people might still try to reach me via the old one. Link: https://lkml.kernel.org/r/20231117022807.29461-1-clin@suse.com Signed-off-by: Chester Lin <clin@suse.com> Cc: Chester Lin <chester62515@gmail.com> Cc: Bjorn Andersson <quic_bjorande@quicinc.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Heiko Stuebner <heiko@sntech.de> Cc: Jakub Kicinski <kuba@kernel.org> Cc: Konrad Dybcio <konrad.dybcio@linaro.org> Cc: Oleksij Rempel <o.rempel@pengutronix.de> Cc: Stephen Hemminger <stephen@networkplumber.org> Cc: Conor Dooley <conor.dooley@microchip.com> Cc: Matthias Brugger <mbrugger@suse.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
Hugh Dickins
|
9aa1345d66 |
mm: fix oops when filemap_map_pmd() without prealloc_pte
syzbot reports oops in lockdep's __lock_acquire(), called from
__pte_offset_map_lock() called from filemap_map_pages(); or when I run the
repro, the oops comes in pmd_install(), called from filemap_map_pmd()
called from filemap_map_pages(), just before the __pte_offset_map_lock().
The problem is that filemap_map_pmd() has been assuming that when it finds
pmd_none(), a page table has already been prepared in prealloc_pte; and
indeed do_fault_around() has been careful to preallocate one there, when
it finds pmd_none(): but what if *pmd became none in between?
My 6.6 mods in mm/khugepaged.c, avoiding mmap_lock for write, have made it
easy for *pmd to be cleared while servicing a page fault; but even before
those, a huge *pmd might be zapped while a fault is serviced.
The difference in symptomatic stack traces comes from the "memory model"
in use: pmd_install() uses pmd_populate() uses page_to_pfn(): in some
models that is strict, and will oops on the NULL prealloc_pte; in other
models, it will construct a bogus value to be populated into *pmd, then
__pte_offset_map_lock() oops when trying to access split ptlock pointer
(or some other symptom in normal case of ptlock embedded not pointer).
Link: https://lore.kernel.org/linux-mm/20231115065506.19780-1-jose.pekkarinen@foxhound.fi/
Link: https://lkml.kernel.org/r/6ed0c50c-78ef-0719-b3c5-60c0c010431c@google.com
Fixes:
|
||
Lizhi Xu
|
eb66b8abae |
squashfs: squashfs_read_data need to check if the length is 0
When the length passed in is 0, the pagemap_scan_test_walk() caller should bail. This error causes at least a WARN_ON(). Link: https://lkml.kernel.org/r/20231116031352.40853-1-lizhi.xu@windriver.com Reported-by: syzbot+32d3767580a1ea339a81@syzkaller.appspotmail.com Closes: https://lkml.kernel.org/r/0000000000000526f2060a30a085@google.com Signed-off-by: Lizhi Xu <lizhi.xu@windriver.com> Reviewed-by: Phillip Lougher <phillip@squashfs.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Peter Xu
|
3f3cac5c0a |
mm/selftests: fix pagemap_ioctl memory map test
__FILE__ is not guaranteed to exist in current dir. Replace that with
argv[0] for memory map test.
Link: https://lkml.kernel.org/r/20231116201547.536857-4-peterx@redhat.com
Fixes:
|
||
|
Peter Xu
|
4980e837ca |
mm/pagemap: fix wr-protect even if PM_SCAN_WP_MATCHING not set
The new pagemap ioctl contains a fast path for wr-protections without
looking into category masks. It forgets to check PM_SCAN_WP_MATCHING
before applying the wr-protections. It can cause, e.g., pte markers
installed on archs that do not even support uffd wr-protect.
WARNING: CPU: 0 PID: 5059 at mm/memory.c:1520 zap_pte_range mm/memory.c:1520 [inline]
Link: https://lkml.kernel.org/r/20231116201547.536857-3-peterx@redhat.com
Fixes:
|
||
|
Peter Xu
|
0dff1b407d |
mm/pagemap: fix ioctl(PAGEMAP_SCAN) on vma check
Patch series "mm/pagemap: A few fixes to the recent PAGEMAP_SCAN".
This series should fix two known reports from syzbot on the new
PAGEMAP_SCAN ioctl():
https://lore.kernel.org/all/000000000000b0e576060a30ee3b@google.com/
https://lore.kernel.org/all/000000000000773fa7060a31e2cc@google.com/
The 3rd patch is something I found when testing these patches.
This patch (of 3):
The new ioctl(PAGEMAP_SCAN) relies on vma wr-protect capability provided
by userfault, however in the vma test it didn't explicitly require the vma
to have wr-protect function enabled, even if PM_SCAN_WP_MATCHING flag is
set.
It means the pagemap code can now apply uffd-wp bit to a page in the vma
even if not registered to userfaultfd at all.
Then in whatever way as long as the pte got written and page fault
resolved, we'll apply the write bit even if uffd-wp bit is set. We'll see
a pte that has both UFFD_WP and WRITE bit set. Anything later that looks
up the pte for uffd-wp bit will trigger the warning:
WARNING: CPU: 1 PID: 5071 at arch/x86/include/asm/pgtable.h:403 pte_uffd_wp arch/x86/include/asm/pgtable.h:403 [inline]
Fix it by doing proper check over the vma attributes when
PM_SCAN_WP_MATCHING is specified.
Link: https://lkml.kernel.org/r/20231116201547.536857-1-peterx@redhat.com
Link: https://lkml.kernel.org/r/20231116201547.536857-2-peterx@redhat.com
Fixes:
|
||
Roman Gushchin
|
5f79489a73 |
mm: kmem: properly initialize local objcg variable in current_obj_cgroup()
Erhard reported that the 6.7-rc1 kernel panics on boot if being
built with clang-16. The problem was not reproducible with gcc.
[ 5.975049] general protection fault, probably for non-canonical address 0xf555515555555557: 0000 [#1] SMP KASAN PTI
[ 5.976422] KASAN: maybe wild-memory-access in range [0xaaaaaaaaaaaaaab8-0xaaaaaaaaaaaaaabf]
[ 5.977475] CPU: 3 PID: 1 Comm: systemd Not tainted 6.7.0-rc1-Zen3 #77
[ 5.977860] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014
[ 5.977860] RIP: 0010:obj_cgroup_charge_pages+0x27/0x2d5
[ 5.977860] Code: 90 90 90 55 41 57 41 56 41 55 41 54 53 89 d5 41 89 f6 49 89 ff 48 b8 00 00 00 00 00 fc ff df 49 83 c7 10 4d3
[ 5.977860] RSP: 0018:ffffc9000001fb18 EFLAGS: 00010a02
[ 5.977860] RAX: dffffc0000000000 RBX: aaaaaaaaaaaaaaaa RCX: ffff8883eb9a8b08
[ 5.977860] RDX: 0000000000000005 RSI: 0000000000400cc0 RDI: aaaaaaaaaaaaaaaa
[ 5.977860] RBP: 0000000000000005 R08: 3333333333333333 R09: 0000000000000000
[ 5.977860] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8883eb9a8b18
[ 5.977860] R13: 1555555555555557 R14: 0000000000400cc0 R15: aaaaaaaaaaaaaaba
[ 5.977860] FS: 00007f2976438b40(0000) GS:ffff8883eb980000(0000) knlGS:0000000000000000
[ 5.977860] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5.977860] CR2: 00007f29769e0060 CR3: 0000000107222003 CR4: 0000000000370eb0
[ 5.977860] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5.977860] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 5.977860] Call Trace:
[ 5.977860] <TASK>
[ 5.977860] ? __die_body+0x16/0x75
[ 5.977860] ? die_addr+0x4a/0x70
[ 5.977860] ? exc_general_protection+0x1c9/0x2d0
[ 5.977860] ? cgroup_mkdir+0x455/0x9fb
[ 5.977860] ? __x64_sys_mkdir+0x69/0x80
[ 5.977860] ? asm_exc_general_protection+0x26/0x30
[ 5.977860] ? obj_cgroup_charge_pages+0x27/0x2d5
[ 5.977860] obj_cgroup_charge+0x114/0x1ab
[ 5.977860] pcpu_alloc+0x1a6/0xa65
[ 5.977860] ? mem_cgroup_css_alloc+0x1eb/0x1140
[ 5.977860] ? cgroup_apply_control_enable+0x26b/0x7c0
[ 5.977860] mem_cgroup_css_alloc+0x23f/0x1140
[ 5.977860] cgroup_apply_control_enable+0x26b/0x7c0
[ 5.977860] ? cgroup_kn_set_ugid+0x2d/0x1a0
[ 5.977860] cgroup_mkdir+0x455/0x9fb
[ 5.977860] ? __cfi_cgroup_mkdir+0x10/0x10
[ 5.977860] kernfs_iop_mkdir+0x130/0x170
[ 5.977860] vfs_mkdir+0x405/0x530
[ 5.977860] do_mkdirat+0x188/0x1f0
[ 5.977860] __x64_sys_mkdir+0x69/0x80
[ 5.977860] do_syscall_64+0x7d/0x100
[ 5.977860] ? do_syscall_64+0x89/0x100
[ 5.977860] ? do_syscall_64+0x89/0x100
[ 5.977860] ? do_syscall_64+0x89/0x100
[ 5.977860] ? do_syscall_64+0x89/0x100
[ 5.977860] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 5.977860] RIP: 0033:0x7f297671defb
[ 5.977860] Code: 8b 05 39 7f 0d 00 bb ff ff ff ff 64 c7 00 16 00 00 00 e9 61 ff ff ff e8 23 0c 02 00 0f 1f 00 f3 0f 1e fa b88
[ 5.977860] RSP: 002b:00007ffee6242bb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
[ 5.977860] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f297671defb
[ 5.977860] RDX: 0000000000000000 RSI: 00000000000001ed RDI: 000055c6b449f0e0
[ 5.977860] RBP: 00007ffee6242bf0 R08: 000000000000000e R09: 0000000000000000
[ 5.977860] R10: 0000000000000000 R11: 0000000000000246 R12: 000055c6b445db80
[ 5.977860] R13: 00000000000003a0 R14: 00007f2976a68651 R15: 00000000000003a0
[ 5.977860] </TASK>
[ 5.977860] Modules linked in:
[ 6.014095] ---[ end trace 0000000000000000 ]---
[ 6.014701] RIP: 0010:obj_cgroup_charge_pages+0x27/0x2d5
[ 6.015348] Code: 90 90 90 55 41 57 41 56 41 55 41 54 53 89 d5 41 89 f6 49 89 ff 48 b8 00 00 00 00 00 fc ff df 49 83 c7 10 4d3
[ 6.017575] RSP: 0018:ffffc9000001fb18 EFLAGS: 00010a02
[ 6.018255] RAX: dffffc0000000000 RBX: aaaaaaaaaaaaaaaa RCX: ffff8883eb9a8b08
[ 6.019120] RDX: 0000000000000005 RSI: 0000000000400cc0 RDI: aaaaaaaaaaaaaaaa
[ 6.019983] RBP: 0000000000000005 R08: 3333333333333333 R09: 0000000000000000
[ 6.020849] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8883eb9a8b18
[ 6.021747] R13: 1555555555555557 R14: 0000000000400cc0 R15: aaaaaaaaaaaaaaba
[ 6.022609] FS: 00007f2976438b40(0000) GS:ffff8883eb980000(0000) knlGS:0000000000000000
[ 6.023593] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6.024296] CR2: 00007f29769e0060 CR3: 0000000107222003 CR4: 0000000000370eb0
[ 6.025279] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 6.026139] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 6.027000] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
Actually the problem is caused by uninitialized local variable in
current_obj_cgroup(). If the root memory cgroup is set as an active
memory cgroup for a charging scope (as in the trace, where systemd tries
to create the first non-root cgroup, so the parent cgroup is the root
cgroup), the "for" loop is skipped and uninitialized objcg is returned,
causing a panic down the accounting stack.
The fix is trivial: initialize the objcg variable to NULL unconditionally
before the "for" loop.
[vbabka@suse.cz: remove redundant assignment]
Link: https://lkml.kernel.org/r/4bd106d5-c3e3-6731-9a74-cff81e2392de@suse.cz
Link: https://lkml.kernel.org/r/20231116025109.3775055-1-roman.gushchin@linux.dev
Fixes:
|
||
Liu Shixin
|
d63385a7d3 |
mm/kmemleak: move set_track_prepare() outside raw_spinlocks
set_track_prepare() will call __alloc_pages() which attempts to acquire zone->lock(spinlocks), so move it outside object->lock(raw_spinlocks) because it's not right to acquire spinlocks while holding raw_spinlocks in RT mode. Link: https://lkml.kernel.org/r/20231115082138.2649870-3-liushixin2@huawei.com Signed-off-by: Liu Shixin <liushixin2@huawei.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Cc: Geert Uytterhoeven <geert+renesas@glider.be> Cc: Kefeng Wang <wangkefeng.wang@huawei.com> Cc: Patrick Wang <patrick.wang.shcn@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
|
Liu Shixin
|
4eff7d62ab |
Revert "mm/kmemleak: move the initialisation of object to __link_object"
Patch series "Fix invalid wait context of set_track_prepare()". Geert reported an invalid wait context[1] which is resulted by moving set_track_prepare() inside kmemleak_lock. This is not allowed because in RT mode, the spinlocks can be preempted but raw_spinlocks can not, so it is not allowd to acquire spinlocks while holding raw_spinlocks. The second patch fix same problem in kmemleak_update_trace(). This patch (of 2): Move the initialisation of object back to__alloc_object() because set_track_prepare() attempt to acquire zone->lock(spinlocks) while __link_object is holding kmemleak_lock(raw_spinlocks). This is not right for RT mode. This reverts commit |
||
|
Andrew Morton
|
727d16f199 |
mm/memory.c:zap_pte_range() print bad swap entry
We have a report of this WARN() triggering. Let's print the offending swp_entry_t to help diagnosis. Link: https://lkml.kernel.org/r/000000000000b0e576060a30ee3b@google.com Cc: Muhammad Usama Anjum <usama.anjum@collabora.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
Mike Kravetz
|
187da0f825 |
hugetlb: fix null-ptr-deref in hugetlb_vma_lock_write
The routine __vma_private_lock tests for the existence of a reserve map
associated with a private hugetlb mapping. A pointer to the reserve map
is in vma->vm_private_data. __vma_private_lock was checking the pointer
for NULL. However, it is possible that the low bits of the pointer could
be used as flags. In such instances, vm_private_data is not NULL and not
a valid pointer. This results in the null-ptr-deref reported by syzbot:
general protection fault, probably for non-canonical address 0xdffffc000000001d:
0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x00000000000000e8-0x00000000000000ef]
CPU: 0 PID: 5048 Comm: syz-executor139 Not tainted 6.6.0-rc7-syzkaller-00142-g88
8cf78c29e2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 1
0/09/2023
RIP: 0010:__lock_acquire+0x109/0x5de0 kernel/locking/lockdep.c:5004
...
Call Trace:
<TASK>
lock_acquire kernel/locking/lockdep.c:5753 [inline]
lock_acquire+0x1ae/0x510 kernel/locking/lockdep.c:5718
down_write+0x93/0x200 kernel/locking/rwsem.c:1573
hugetlb_vma_lock_write mm/hugetlb.c:300 [inline]
hugetlb_vma_lock_write+0xae/0x100 mm/hugetlb.c:291
__hugetlb_zap_begin+0x1e9/0x2b0 mm/hugetlb.c:5447
hugetlb_zap_begin include/linux/hugetlb.h:258 [inline]
unmap_vmas+0x2f4/0x470 mm/memory.c:1733
exit_mmap+0x1ad/0xa60 mm/mmap.c:3230
__mmput+0x12a/0x4d0 kernel/fork.c:1349
mmput+0x62/0x70 kernel/fork.c:1371
exit_mm kernel/exit.c:567 [inline]
do_exit+0x9ad/0x2a20 kernel/exit.c:861
__do_sys_exit kernel/exit.c:991 [inline]
__se_sys_exit kernel/exit.c:989 [inline]
__x64_sys_exit+0x42/0x50 kernel/exit.c:989
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
Mask off low bit flags before checking for NULL pointer. In addition, the
reserve map only 'belongs' to the OWNER (parent in parent/child
relationships) so also check for the OWNER flag.
Link: https://lkml.kernel.org/r/20231114012033.259600-1-mike.kravetz@oracle.com
Reported-by: syzbot+6ada951e7c0f7bc8a71e@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/linux-mm/00000000000078d1e00608d7878b@google.com/
Fixes:
|
||
|
Andrew Morton
|
b197d16669 |
MAINTAINERS: add Andrew Morton for lib/*
Add myself as the fallthough maintainer for material under lib/. Cc: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
||
Linus Torvalds
|
33cc938e65 | Linux 6.7-rc4 v6.7-rc4 | ||
|
Linus Torvalds
|
968f35f4ab |
five cifs/smb3 fixes
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||
|
Linus Torvalds
|
55abae438c |
firewire fixes for 6.7-rc4
This pull request includes a single patch to fix long-standing issue of memory leak at failure of device registration for fw_unit. We rarely encounter the issue, while it should be applied to stable releases, since it fixes inappropriate API usage. -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQQE66IEYNDXNBPeGKSsLtaWM8LwEwUCZWrgUQAKCRCsLtaWM8Lw Ew8iAQDWPv5JItuZneeRs6NisGxtwNxyxP+O3qmSG4LxXOVfzAEA+K7ubreLee2a lfZkWPeZnWtSIdN+eAm4JfKMhzDfrA4= =oODB -----END PGP SIGNATURE----- Merge tag 'firewire-fixes-6.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394 Pull firewire fix from Takashi Sakamoto: "A single patch to fix long-standing issue of memory leak at failure of device registration for fw_unit. We rarely encounter the issue, but it should be applied to stable releases, since it fixes inappropriate API usage" * tag 'firewire-fixes-6.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394: firewire: core: fix possible memory leak in create_units() |
||
|
Linus Torvalds
|
1b8af6552c |
powerpc fixes for 6.7 #3
- Fix corruption of f0/vs0 during FP/Vector save, seen as userspace crashes
when using io-uring workers (in particular with MariaDB).
- Fix KVM_RUN potentially clobbering all host userspace FP/Vector registers.
Thanks to: Timothy Pearson, Jens Axboe, Nicholas Piggin.
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Merge tag 'powerpc-6.7-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- Fix corruption of f0/vs0 during FP/Vector save, seen as userspace
crashes when using io-uring workers (in particular with MariaDB)
- Fix KVM_RUN potentially clobbering all host userspace FP/Vector
registers
Thanks to Timothy Pearson, Jens Axboe, and Nicholas Piggin.
* tag 'powerpc-6.7-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
KVM: PPC: Book3S HV: Fix KVM_RUN clobbering FP/VEC user registers
powerpc: Don't clobber f0/vs0 during fp|altivec register save
|
||
|
Linus Torvalds
|
17b17be28d |
VFIO fixes for v6.7-rc4
- Fix the lifecycle of a mutex in the pds variant driver such that
a reset prior to opening the device won't find it uninitialized.
Implement the release path to symmetrically destroy the mutex.
Also switch a different lock from spinlock to mutex as the code
path has the potential to sleep and doesn't need the spinlock
context otherwise. (Brett Creeley)
- Fix an issue detected via randconfig where KVM tries to symbol_get
an undeclared function. The symbol is temporarily declared
unconditionally here, which resolves the problem and avoids churn
relative to a series pending for the next merge window which
resolves some of this symbol ugliness, but also fixes Kconfig
dependencies. (Sean Christopherson)
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Merge tag 'vfio-v6.7-rc4' of https://github.com/awilliam/linux-vfio
Pull vfio fixes from Alex Williamson:
- Fix the lifecycle of a mutex in the pds variant driver such that a
reset prior to opening the device won't find it uninitialized.
Implement the release path to symmetrically destroy the mutex. Also
switch a different lock from spinlock to mutex as the code path has
the potential to sleep and doesn't need the spinlock context
otherwise (Brett Creeley)
- Fix an issue detected via randconfig where KVM tries to symbol_get an
undeclared function. The symbol is temporarily declared
unconditionally here, which resolves the problem and avoids churn
relative to a series pending for the next merge window which resolves
some of this symbol ugliness, but also fixes Kconfig dependencies
(Sean Christopherson)
* tag 'vfio-v6.7-rc4' of https://github.com/awilliam/linux-vfio:
vfio: Drop vfio_file_iommu_group() stub to fudge around a KVM wart
vfio/pds: Fix possible sleep while in atomic context
vfio/pds: Fix mutex lock->magic != lock warning
|
||
|
Linus Torvalds
|
deb4b9dd3b |
xen: branch for v6.7-rc4
-----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQRTLbB6QfY48x44uB6AXGG7T9hjvgUCZWraswAKCRCAXGG7T9hj vlV0AP9241p7vHlIW6PIdfNZt9/dZZpuFnKHz+cE99pTZDl5nwEAoYqXUm/kEb14 VAy7x0XIVdEt+9l4bgO2Qggx+Y184Qs= =APgm -----END PGP SIGNATURE----- Merge tag 'for-linus-6.7a-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip Pull xen fixes from Juergen Gross: - A fix for the Xen event driver setting the correct return value when experiencing an allocation failure - A fix for allocating space for a struct in the percpu area to not cross page boundaries (this one is for x86, a similar one for Arm was already in the pull request for rc3) * tag 'for-linus-6.7a-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: xen/events: fix error code in xen_bind_pirq_msi_to_irq() x86/xen: fix percpu vcpu_info allocation |
||
|
Linus Torvalds
|
669fc83452 |
Probes fixes for v6.7-r3:
- objpool: Fix objpool overrun case on memory/cache access delay especially on the big.LITTLE SoC. The objpool uses a copy of object slot index internal loop, but the slot index can be changed on another processor in parallel. In that case, the difference of 'head' local copy and the 'slot->last' index will be bigger than local slot size. In that case, we need to re-read the slot::head to update it. - kretprobe: Fix to use appropriate rcu API for kretprobe holder. Since kretprobe_holder::rp is RCU managed, it should use rcu_assign_pointer() and rcu_dereference_check() correctly. Also adding __rcu tag for finding wrong usage by sparse. - rethook: Fix to use appropriate rcu API for rethook::handler. The same as kretprobe, rethook::handler is RCU managed and it should use rcu_assign_pointer() and rcu_dereference_check(). This also adds __rcu tag for finding wrong usage by sparse. -----BEGIN PGP SIGNATURE----- iQFPBAABCgA5FiEEh7BulGwFlgAOi5DV2/sHvwUrPxsFAmVpfBobHG1hc2FtaS5o aXJhbWF0c3VAZ21haWwuY29tAAoJENv7B78FKz8bNyMIAJSLICKQNuFiBJEn/rty ACWJ9QMOnwi0DoVaepG/m9QJh6AIUUFW4//9helmSm0GIVzxQ2+f8UeKU+sYiVtH ro9atea4W4+FMTvtEB1cU8oG5CDVT4WQdUXbjMktqYe3+WB8Zt8+fIP0mnbTFAVr yStpliGPecmlupJVRYqrJGyDdbkUxXxVlPsP/eDrHFgbBWv8Incw0f+MLGSi6LSE sZ1MaKCdi2tlHbtD/fiowfLoBMZwQAKY4hq/XguVsWh+BGaGUgwtif+8ESwPeu22 KEZLyWDQ1N8XBHyOBotV7vsBEwh6LKtLGVXIBsO4KxVyGw6msxWBis0dt/tkn+kk LEg= =B9WK -----END PGP SIGNATURE----- Merge tag 'probes-fixes-v6.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace Pull probes fixes from Masami Hiramatsu: - objpool: Fix objpool overrun case on memory/cache access delay especially on the big.LITTLE SoC. The objpool uses a copy of object slot index internal loop, but the slot index can be changed on another processor in parallel. In that case, the difference of 'head' local copy and the 'slot->last' index will be bigger than local slot size. In that case, we need to re-read the slot::head to update it. - kretprobe: Fix to use appropriate rcu API for kretprobe holder. Since kretprobe_holder::rp is RCU managed, it should use rcu_assign_pointer() and rcu_dereference_check() correctly. Also adding __rcu tag for finding wrong usage by sparse. - rethook: Fix to use appropriate rcu API for rethook::handler. The same as kretprobe, rethook::handler is RCU managed and it should use rcu_assign_pointer() and rcu_dereference_check(). This also adds __rcu tag for finding wrong usage by sparse. * tag 'probes-fixes-v6.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: rethook: Use __rcu pointer for rethook::handler kprobes: consistent rcu api usage for kretprobe holder lib: objpool: fix head overrun on RK3588 SBC |
||
|
Linus Torvalds
|
815fb87b75 |
Power management fixes for 6.7-rc4
- Fix the AMD P-state driver's EPP sysfs interface in the cases when the
performance governor is in use (Ayush Jain).
- Make the ->fast_switch() callback in the AMD P-state driver return the
target frequency as expected (Gautham R. Shenoy).
- Allow user space to control the range of frequencies to use via
scaling_min_freq and scaling_max_freq when AMD P-state driver is in
use (Wyes Karny).
- Prevent power domains needed for wakeup signaling from being turned
off during system suspend on Qualcomm systems and prevent performance
states votes from runtime-suspended devices from being lost across
a system suspend-resume cycle in qcom-cpufreq-nvmem (Stephan Gerhold).
- Fix disabling the 792 Mhz OPP in the imx6q cpufreq driver for the
i.MX6ULL types that can run at that frequency (Christoph Niedermaier).
- Eliminate unnecessary and harmful conversions to uW from the DTPM
(dynamic thermal and power management) framework (Lukasz Luba).
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Merge tag 'pm-6.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"These fix issues in two cpufreq drivers, in the AMD P-state driver and
in the power-capping DTPM framework.
Specifics:
- Fix the AMD P-state driver's EPP sysfs interface in the cases when
the performance governor is in use (Ayush Jain)
- Make the ->fast_switch() callback in the AMD P-state driver return
the target frequency as expected (Gautham R. Shenoy)
- Allow user space to control the range of frequencies to use via
scaling_min_freq and scaling_max_freq when AMD P-state driver is in
use (Wyes Karny)
- Prevent power domains needed for wakeup signaling from being turned
off during system suspend on Qualcomm systems and prevent
performance states votes from runtime-suspended devices from being
lost across a system suspend-resume cycle in qcom-cpufreq-nvmem
(Stephan Gerhold)
- Fix disabling the 792 Mhz OPP in the imx6q cpufreq driver for the
i.MX6ULL types that can run at that frequency (Christoph
Niedermaier)
- Eliminate unnecessary and harmful conversions to uW from the DTPM
(dynamic thermal and power management) framework (Lukasz Luba)"
* tag 'pm-6.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq/amd-pstate: Only print supported EPP values for performance governor
cpufreq/amd-pstate: Fix scaling_min_freq and scaling_max_freq update
powercap: DTPM: Fix unneeded conversions to micro-Watts
cpufreq/amd-pstate: Fix the return value of amd_pstate_fast_switch()
pmdomain: qcom: rpmpd: Set GENPD_FLAG_ACTIVE_WAKEUP
cpufreq: qcom-nvmem: Preserve PM domain votes in system suspend
cpufreq: qcom-nvmem: Enable virtual power domain devices
cpufreq: imx6q: Don't disable 792 Mhz OPP unnecessarily
|
||
|
Linus Torvalds
|
ce474ae7d0 |
ACPI fixes for 6.7-rc4
- Fix a recently introduced build issue on ARM32 platforms caused by an
inadvertent header file breakage (Dave Jiang).
- Eliminate questionable usage of acpi_driver_data() in the ACPI
backlight cooling device code that leads to NULL pointer dereferences
after recent ACPI core changes (Hans de Goede).
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Merge tag 'acpi-6.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fixes from Rafael Wysocki:
"This fixes a recently introduced build issue on ARM32 and a NULL
pointer dereference in the ACPI backlight driver due to a design issue
exposed by a recent change in the ACPI bus type code.
Specifics:
- Fix a recently introduced build issue on ARM32 platforms caused by
an inadvertent header file breakage (Dave Jiang)
- Eliminate questionable usage of acpi_driver_data() in the ACPI
backlight cooling device code that leads to NULL pointer
dereferences after recent ACPI core changes (Hans de Goede)"
* tag 'acpi-6.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: video: Use acpi_video_device for cooling-dev driver data
ACPI: Fix ARM32 platforms compile issue introduced by fw_table changes
|
||
|
Linus Torvalds
|
35f8458480 |
Fix a 6.7-rc1 regression where the arm64 KPTI ends up enabled even on
systems that don't need it. -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEE5RElWfyWxS+3PLO2a9axLQDIXvEFAmVqHPAACgkQa9axLQDI XvGIPQ/+OL6XCj4DLJm0/FB2yYwn0k1Q58L+MCi1SZsrMYtWHcw4DZCG1pr5csvx fTQx9dQjXstUeSif0sDq60aBVJjOEArc4Zk9wW4d/GZ1lv+ZbZvSDfCfEpNS5arN FjZilwpjB8xacRJ8OABuN3OFurZmYOgjan6xFcjVIEeipBfzG4vJh4J/u/j5+7iQ dMEAo3tMFLYLTC/XUFVp/5m5Q8Enwz/Csnoz4XtwK7JYhm7Kuvl2gj3XOa3sa23Y m1y4PPQTWBC+rJ9KGAUgk8WTRHd417LBZQfOnzmyyFQMEmmVEtRNYlF0NVNr4Umk 5pVhhLHGCUnRg0UEIC5v5w5rk0AsBOBZoETW5QmIfRRA6SApR8jNyjcoCHbjOqXb 65Hu420DPUu3eCmKpjhmF+a/xc5NlT1ArEg9kIuM1Lb1zeZpMmkdE50jTamhLnd2 BbfwD6ViU/f9/u7R4Bl6v0J20XHzbupUBOTnLGBboeBki+o60Sc4ndCMDMc3s3Y7 iIdSDXvZMWp6Tzi9n4zcyGXPJ/oKAVJOI+8Ipdc5ATJ/a3mDYkI9LCkqvPYviaAV X61Rd1/ZNgsD117AbUCSJObYfJHIXYNakd5gLlyo6SinxelhSah8wT9Zzygo+Tbr cOp4RWf3IZLaWPzFUd87N4GvxPQtwzrzja8rualK07Jq67MMZzM= =kXj+ -----END PGP SIGNATURE----- Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux Pull arm64 fix from Catalin Marinas: "Fix a regression where the arm64 KPTI ends up enabled even on systems that don't need it" * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: Avoid enabling KPTI unnecessarily |
||
|
Linus Torvalds
|
1a2b418566 |
IOMMU Fixes for Linux v6.7-rc3
Including:
- Fix race conditions in device probe path
- Handle ERR_PTR() returns in __iommu_domain_alloc() path
- Update MAINTAINERS entry for Qualcom IOMMUs
- Printk argument fix in device tree specific code
- Several Intel VT-d fixes from Lu Baolu:
- Do not support enforcing cache coherency for non-empty domains
- Avoid devTLB invalidation if iommu is off
- Disable PCI ATS in legacy passthrough mode
- Support non-PCI devices when clearing context
- Fix incorrect cache invalidation for mm notification
- Add MTL to quirk list to skip TE disabling
- Set variable intel_dirty_ops to static
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Merge tag 'iommu-fixes-v6.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull iommu fixes from Joerg Roedel:
- Fix race conditions in device probe path
- Handle ERR_PTR() returns in __iommu_domain_alloc() path
- Update MAINTAINERS entry for Qualcom IOMMUs
- Printk argument fix in device tree specific code
- Several Intel VT-d fixes from Lu Baolu:
- Do not support enforcing cache coherency for non-empty domains
- Avoid devTLB invalidation if iommu is off
- Disable PCI ATS in legacy passthrough mode
- Support non-PCI devices when clearing context
- Fix incorrect cache invalidation for mm notification
- Add MTL to quirk list to skip TE disabling
- Set variable intel_dirty_ops to static
* tag 'iommu-fixes-v6.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu: Fix printk arg in of_iommu_get_resv_regions()
iommu/vt-d: Set variable intel_dirty_ops to static
iommu/vt-d: Fix incorrect cache invalidation for mm notification
iommu/vt-d: Add MTL to quirk list to skip TE disabling
iommu/vt-d: Make context clearing consistent with context mapping
iommu/vt-d: Disable PCI ATS in legacy passthrough mode
iommu/vt-d: Omit devTLB invalidation requests when TES=0
iommu/vt-d: Support enforce_cache_coherency only for empty domains
iommu: Avoid more races around device probe
MAINTAINERS: list all Qualcomm IOMMU drivers in the QUALCOMM IOMMU entry
iommu: Flow ERR_PTR out from __iommu_domain_alloc()
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Linus Torvalds
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06a3c59f9c |
sound fixes for 6.7-rc4
No surprise here, including only a collection of HD-audio device-specific small fixes. -----BEGIN PGP SIGNATURE----- iQJCBAABCAAsFiEEIXTw5fNLNI7mMiVaLtJE4w1nLE8FAmVpvSIOHHRpd2FpQHN1 c2UuZGUACgkQLtJE4w1nLE8PRA/+PQFZaI5L5tcEB9+mjH3TUVSYtbBweOBToEbg QFt3KNS550Q6Mcvnhrp1AH7amFkWt354e8iZz5tVAITrFkwkYWImlneZweCWQXeB /TvIViuUr8KMfl2eyAMVRUkuqQ7EoVrkL1uIjNWCernNUQqlc+oUTn6D42lxiwkG mQpzJL/MknSPV+31lv0wZyj7TDSCDPRhmX6Lu6FH+QbbhdZUGpl8etmUUYNa8D1G hh2tPjVGuUxZDcIYtVD3NIjOTFvTyVF3S+cxqW2WT1qs2ZmWH+nBBqZbkGva7gfB /s0TNTTOLq6VD58B5vf25D1AUVEMub5295PKrCnKfo2VO+/PMPQWXBS2pYuCey6y MZpqCKRStgBCCfCZg6byWiVKwqsSJJTvKlXAginYXuK/jFJhnJxqVRQ9Mc6Op81z +c1p0Zy9IEhTAdF2RLGw99zho1B5cx/zBGRvVwq0c9NV+LQwMoRsFKbPr6QAM65K bAb+3wVQ3cG1y8FVz3Amq5JfcbymJ15CLwI5nW3Op47MrUSsYXflbPfgExI7dRTH Xegm8jPbw8V9r66BYAATRQztENxQSGINL/0ngGAS4jEpKN2XTgjSJgBizBdvRis5 RbJERBICEUhFGlogREsareSkkoV20lgIxJ5Nc/uve4RtLaV8ovheTA48NspXZ8ld 6HlRRIg= =57FL -----END PGP SIGNATURE----- Merge tag 'sound-6.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound fixes from Takashi Iwai: "No surprise here, including only a collection of HD-audio device-specific small fixes" * tag 'sound-6.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ALSA: hda: Disable power-save on KONTRON SinglePC ALSA: hda/realtek: Add supported ALC257 for ChromeOS ALSA: hda/realtek: Headset Mic VREF to 100% ALSA: hda: intel-nhlt: Ignore vbps when looking for DMIC 32 bps format ALSA: hda: cs35l56: Enable low-power hibernation mode on SPI ALSA: cs35l41: Fix for old systems which do not support command ALSA: hda: cs35l41: Remove unnecessary boolean state variable firmware_running ALSA: hda - Fix speaker and headset mic pin config for CHUWI CoreBook XPro |