Sasha Levin
75aaa8fa76
mm/vunmap: add cond_resched() in vunmap_pmd_range ...
[ Upstream commit e47110e90584a22e9980510b00d0dfad3a83354e ]
Like zap_pte_range add cond_resched so that we can avoid softlockups as
reported below. On non-preemptible kernel with large I/O map region (like
the one we get when using persistent memory with sector mode), an unmap of
the namespace can report below softlockups.
22724.027334] watchdog: BUG: soft lockup - CPU#49 stuck for 23s! [ndctl:50777]
NIP [c0000000000dc224] plpar_hcall+0x38/0x58
LR [c0000000000d8898] pSeries_lpar_hpte_invalidate+0x68/0xb0
Call Trace:
flush_hash_page+0x114/0x200
hpte_need_flush+0x2dc/0x540
vunmap_page_range+0x538/0x6f0
free_unmap_vmap_area+0x30/0x70
remove_vm_area+0xfc/0x140
__vunmap+0x68/0x270
__iounmap.part.0+0x34/0x60
memunmap+0x54/0x70
release_nodes+0x28c/0x300
device_release_driver_internal+0x16c/0x280
unbind_store+0x124/0x170
drv_attr_store+0x44/0x60
sysfs_kf_write+0x64/0x90
kernfs_fop_write+0x1b0/0x290
__vfs_write+0x3c/0x70
vfs_write+0xd8/0x260
ksys_write+0xdc/0x130
system_call+0x5c/0x70
Reported-by: Harish Sriram <harish@linux.ibm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/20200807075933.310240-1-aneesh.kumar@linux.ibm.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-09-03 11:26:52 +02:00
kasan: disable branch tracing for core runtime
2020-05-27 17:46:48 +02:00
bdi: add a ->dev_name field to struct backing_dev_info
2020-05-14 07:58:30 +02:00
cma: don't quit at first error when activating reserved areas
2020-09-03 11:26:51 +02:00
mm, compaction: make capture control handling safe wrt interrupts
2020-07-09 09:37:57 +02:00
mm/debug.c: always print flags in dump_page()
2020-03-05 16:43:51 +01:00
mm/filemap.c: don't bother dropping mmap_sem for zero size readahead
2020-08-05 09:59:41 +02:00
mm: untag user pointers in get_vaddr_frames
2019-09-25 17:51:41 -07:00
gup: document and work around "COW can break either way" issue
2020-06-17 16:40:30 +02:00
mm/gup: fix memory leak in __gup_benchmark_ioctl
2020-01-09 10:20:00 +01:00
mm: thp: make the THP mapcount atomic against __split_huge_pmd_locked()
2020-06-22 09:31:14 +02:00
mm/hugetlb: fix calculation of adjust_range_if_pmd_sharing_possible
2020-08-26 10:41:07 +02:00
mm: hugetlb: switch to css_tryget() in hugetlb_cgroup_charge_cgroup()
2019-11-15 18:34:00 -08:00
mm/init-mm.c: include <linux/mman.h> for vm_committed_as_batch
2019-10-19 06:32:32 -04:00
mm: drop mmap_sem before calling balance_dirty_pages() in write fault
2020-01-09 10:19:55 +01:00
mm,thp: add read-only THP support for (non-shmem) FS
2019-09-24 15:54:11 -07:00
khugepaged: adjust VM_BUG_ON_MM() in __khugepaged_enter()
2020-08-26 10:40:48 +02:00
kmemleak: Do not corrupt the object_list during clean-up
2019-10-14 08:56:16 -07:00
mm/ksm: fix NULL pointer dereference when KSM zero page is enabled
2020-04-29 16:33:15 +02:00
uaccess: Add non-pagefault user-space write function
2020-01-17 19:48:40 +01:00
mm: do not allow MADV_PAGEOUT for CoW pages
2020-03-25 08:25:57 +01:00
mm: silence -Woverride-init/initializer-overrides
2019-09-24 15:54:10 -07:00
mm: memblock: do not enforce current limit for memblock_phys* family
2019-10-19 06:32:32 -04:00
mm/memcg: fix refcount error while moving and swapping
2020-07-29 10:18:43 +02:00
mm/memory-failure.c: don't access uninitialized memmaps in memory_failure()
2019-10-19 06:32:31 -04:00
mm: drop mmap_sem before calling balance_dirty_pages() in write fault
2020-01-09 10:19:55 +01:00
mm/memory_hotplug: fix unpaired mem_hotplug_begin/done
2020-08-21 13:05:27 +02:00
mm: mempolicy: require at least one nodeid for MPOL_PREFERRED
2020-04-08 09:08:47 +02:00
mm/memory_hotplug: shrink zones when offlining memory
2020-01-09 10:19:56 +01:00
mm: move_pages: report the number of non-attempted pages
2020-02-11 04:35:13 -08:00
mm: untag user pointers passed to memory syscalls
2019-09-25 17:51:41 -07:00
mm: untag user pointers passed to memory syscalls
2019-09-25 17:51:41 -07:00
mm/mmap.c: Add cond_resched() for exit_mmap() CPU stalls
2020-08-19 08:16:02 +02:00
mm: fix kthread_use_mm() vs TLB invalidate
2020-09-03 11:26:51 +02:00
mm/mmu_gather: invalidate TLB correctly on batch allocation failure and flush
2020-02-11 04:35:42 -08:00
mm/mmu_notifiers: use the right return code for WARN_ON
2019-11-06 08:47:50 -08:00
mm, numa: fix bad pmd by atomically check for pmd_trans_huge when marking page tables prot_numa
2020-03-12 13:00:19 +01:00
mm: Fix mremap not considering huge pmd devmap
2020-06-07 13:18:46 +02:00
mm: untag user pointers passed to memory syscalls
2019-09-25 17:51:41 -07:00
x86/mm: split vmalloc_sync_all()
2020-03-25 08:25:58 +01:00
mm/oom: fix pgtables units mismatch in Killed process message
2020-01-09 10:19:57 +01:00
mm/page-writeback.c: avoid potential division by zero in wb_min_max_ratio()
2020-01-23 08:22:41 +01:00
mm, page_alloc: fix core hung in free_pcppages_bulk()
2020-08-26 10:40:51 +02:00
mm/page_counter.c: fix protection usage propagation
2020-08-21 13:05:27 +02:00
mm, page_owner: fix off-by-one error in __set_page_owner_handle()
2019-10-14 15:04:00 -07:00
mm/page_io.c: do not free shared swap slots
2019-11-15 18:34:00 -08:00
mm/page_owner: don't access uninitialized memmaps when reading /proc/pagetypeinfo
2019-10-19 06:32:31 -04:00
mm: include <linux/huge_mm.h> for is_vma_temporary_stack
2019-10-19 06:32:32 -04:00
shmem: fix possible deadlocks on shmlock_user_lock
2020-05-20 08:20:03 +02:00
mm/shuffle: don't move pages between zones and don't read garbage memmaps
2020-09-03 11:26:51 +02:00
mm, debug_pagealloc: don't rely on static keys too early
2020-01-23 08:22:40 +01:00
mm: slab: make page_cgroup_ino() to recognize non-compound slab pages properly
2019-11-06 08:47:50 -08:00
mm: memcg/slab: fix memory leak at non-root kmem_cache destroy
2020-07-29 10:18:44 +02:00
mm, sl[aou]b: guarantee natural alignment for kmalloc(power-of-two)
2019-10-07 15:47:20 -07:00
mm/slub: fix stack overruns with SLUB_STATS
2020-07-09 09:37:50 +02:00
mm/sparse: fix kernel crash with pfn_section_valid check
2020-04-01 11:02:03 +02:00
mm: introduce MADV_COLD
2019-09-25 17:51:41 -07:00
mm: fix swap cache node allocation mask
2020-07-09 09:37:49 +02:00
mm/swapfile.c: move inode_lock out of claim_swapfile
2020-04-01 11:02:02 +02:00
mm/thp: allow dropping THP from page cache
2019-10-19 06:32:33 -04:00
mm: add kvfree_sensitive() for freeing sensitive data objects
2020-06-17 16:40:23 +02:00
mm/vunmap: add cond_resched() in vunmap_pmd_range
2020-09-03 11:26:52 +02:00
mm/vmpressure.c: fix a signedness bug in vmpressure_register_event()
2019-10-07 15:47:19 -07:00
mm/vmscan.c: don't round up scan size for online memory cgroup
2020-02-28 17:22:20 +01:00
mm, vmstat: reduce zone->lock holding time by /proc/pagetypeinfo
2019-11-06 08:47:50 -08:00
mm/z3fold.c: claim page in the beginning of free
2019-10-07 15:47:19 -07:00
zpool: add malloc_support_movable to zpool_driver
2019-09-24 15:54:12 -07:00
mm/zsmalloc.c: fix the migrated zspage statistics.
2020-01-09 10:19:56 +01:00
zswap: do not map same object twice
2019-09-24 15:54:12 -07:00
75aaa8fa76