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| Filename | Latest commit message | Latest commit date |
|---|---|---|
0868b99c21
When bitmap is resized, the old kalloced chunks just are not released
once the resized bitmap starts to use new space.
This fixes in particular kmemleak reports like this one:
unreferenced object 0xffff8f4311e9c000 (size 4096):
comm "lvm", pid 19333, jiffies 4295263268 (age 528.265s)
hex dump (first 32 bytes):
02 80 02 80 02 80 02 80 02 80 02 80 02 80 02 80 ................
02 80 02 80 02 80 02 80 02 80 02 80 02 80 02 80 ................
backtrace:
[<ffffffffa69471ca>] kmemleak_alloc+0x4a/0xa0
[<ffffffffa628c10e>] kmem_cache_alloc_trace+0x14e/0x2e0
[<ffffffffa676cfec>] bitmap_checkpage+0x7c/0x110
[<ffffffffa676d0c5>] bitmap_get_counter+0x45/0xd0
[<ffffffffa676d6b3>] bitmap_set_memory_bits+0x43/0xe0
[<ffffffffa676e41c>] bitmap_init_from_disk+0x23c/0x530
[<ffffffffa676f1ae>] bitmap_load+0xbe/0x160
[<ffffffffc04c47d3>] raid_preresume+0x203/0x2f0 [dm_raid]
[<ffffffffa677762f>] dm_table_resume_targets+0x4f/0xe0
[<ffffffffa6774b52>] dm_resume+0x122/0x140
[<ffffffffa6779b9f>] dev_suspend+0x18f/0x290
[<ffffffffa677a3a7>] ctl_ioctl+0x287/0x560
[<ffffffffa677a693>] dm_ctl_ioctl+0x13/0x20
[<ffffffffa62d6b46>] do_vfs_ioctl+0xa6/0x750
[<ffffffffa62d7269>] SyS_ioctl+0x79/0x90
[<ffffffffa6956d41>] entry_SYSCALL_64_fastpath+0x1f/0xc2
Signed-off-by: Zdenek Kabelac <zkabelac@redhat.com>
Signed-off-by: Shaohua Li <shli@fb.com>
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.