Skip to content

md/md-llbimtap: fix two corner case problems - #507

Closed
blktests-ci-kpd[bot] wants to merge 3 commits into
linus-master_basefrom
series/1046430=>linus-master
Closed

md/md-llbimtap: fix two corner case problems#507
blktests-ci-kpd[bot] wants to merge 3 commits into
linus-master_basefrom
series/1046430=>linus-master

Conversation

@blktests-ci-kpd

@blktests-ci-kpd blktests-ci-kpd Bot commented Jan 24, 2026

Copy link
Copy Markdown

Pull request for series with
subject: md/md-llbimtap: fix two corner case problems
version: 1
url: https://patchwork.kernel.org/project/linux-block/list/?series=1046430

@blktests-ci-kpd

blktests-ci-kpd Bot commented Jan 24, 2026

Copy link
Copy Markdown
Author

Upstream branch: 6208587
series: https://patchwork.kernel.org/project/linux-block/list/?series=1046430
version: 1

@blktests-ci-kpd

blktests-ci-kpd Bot commented Jan 25, 2026

Copy link
Copy Markdown
Author

Upstream branch: d91a46d
series: https://patchwork.kernel.org/project/linux-block/list/?series=1046430
version: 1

@blktests-ci-kpd
blktests-ci-kpd Bot force-pushed the series/1046430=>linus-master branch from f026438 to 47ff00d Compare January 25, 2026 10:21
@blktests-ci-kpd

blktests-ci-kpd Bot commented Jan 27, 2026

Copy link
Copy Markdown
Author

Upstream branch: fcb70a5
series: https://patchwork.kernel.org/project/linux-block/list/?series=1046430
version: 1

@blktests-ci-kpd
blktests-ci-kpd Bot force-pushed the series/1046430=>linus-master branch from 47ff00d to a5025c6 Compare January 27, 2026 10:05
@blktests-ci-kpd

blktests-ci-kpd Bot commented Jan 29, 2026

Copy link
Copy Markdown
Author

Upstream branch: 8dfce89
series: https://patchwork.kernel.org/project/linux-block/list/?series=1046430
version: 1

@blktests-ci-kpd
blktests-ci-kpd Bot force-pushed the series/1046430=>linus-master branch from a5025c6 to f874326 Compare January 29, 2026 00:26
@blktests-ci-kpd

blktests-ci-kpd Bot commented Feb 3, 2026

Copy link
Copy Markdown
Author

Upstream branch: de0674d
series: https://patchwork.kernel.org/project/linux-block/list/?series=1046430
version: 1

@blktests-ci-kpd
blktests-ci-kpd Bot force-pushed the series/1046430=>linus-master branch from f874326 to 6cd03ff Compare February 3, 2026 19:16
@blktests-ci-kpd

blktests-ci-kpd Bot commented Feb 5, 2026

Copy link
Copy Markdown
Author

Upstream branch: f14faaf
series: https://patchwork.kernel.org/project/linux-block/list/?series=1046430
version: 1

@blktests-ci-kpd
blktests-ci-kpd Bot force-pushed the series/1046430=>linus-master branch from 6cd03ff to 0af2ad7 Compare February 5, 2026 03:38
@blktests-ci-kpd

blktests-ci-kpd Bot commented Feb 6, 2026

Copy link
Copy Markdown
Author

Upstream branch: b7ff715
series: https://patchwork.kernel.org/project/linux-block/list/?series=1046430
version: 1

@blktests-ci-kpd
blktests-ci-kpd Bot force-pushed the series/1046430=>linus-master branch from 0af2ad7 to 9c4e152 Compare February 6, 2026 09:01
@blktests-ci-kpd

blktests-ci-kpd Bot commented Feb 8, 2026

Copy link
Copy Markdown
Author

Upstream branch: e7aa572
series: https://patchwork.kernel.org/project/linux-block/list/?series=1046430
version: 1

@blktests-ci-kpd
blktests-ci-kpd Bot force-pushed the series/1046430=>linus-master branch from 9c4e152 to f0e4f35 Compare February 8, 2026 04:23
@blktests-ci-kpd

blktests-ci-kpd Bot commented Feb 9, 2026

Copy link
Copy Markdown
Author

Upstream branch: 05f7e89
series: https://patchwork.kernel.org/project/linux-block/list/?series=1046430
version: 1

@hailan94 @kawasaki
md/raid5: fix IO hang with degraded array with llbitmap
363a9ed 
When llbitmap bit state is still unwritten, any new write should force
rcw, as bitmap_ops->blocks_synced() is checked in handle_stripe_dirting().
However, later the same check is missing in need_this_block(), causing
stripe to deadloop during handling because handle_stripe() will decide
to go to handle_stripe_fill(), meanwhile need_this_block() always return
0 and nothing is handled.

Fixes: 5ab829f ("md/md-llbitmap: introduce new lockless bitmap")
Signed-off-by: Yu Kuai <yukuai@fnnas.com>
Reviewed-by: Li Nan <linan122@huawei.com>
@hailan94 @kawasaki
md/md-llbitmap: fix percpu_ref not resurrected on suspend timeout
83738bb 
When llbitmap_suspend_timeout() times out waiting for percpu_ref to
become zero, it returns -ETIMEDOUT without resurrecting the percpu_ref.
The caller (md_llbitmap_daemon_fn) then continues to the next page
without calling llbitmap_resume(), leaving the percpu_ref in a killed
state permanently.

Fix this by resurrecting the percpu_ref before returning the error,
ensuring the page control structure remains usable for subsequent
operations.

Fixes: 5ab829f ("md/md-llbitmap: introduce new lockless bitmap")
Signed-off-by: Yu Kuai <yukuai@fnnas.com>
Reviewed-by: Li Nan <linan122@huawei.com>
@blktests-ci-kpd
blktests-ci-kpd Bot force-pushed the series/1046430=>linus-master branch from f0e4f35 to 83738bb Compare February 9, 2026 04:38
@blktests-ci-kpd

blktests-ci-kpd Bot commented Feb 12, 2026

Copy link
Copy Markdown
Author

Upstream branch: c22e26b
series: https://patchwork.kernel.org/project/linux-block/list/?series=1046430
version: 1

Pull request is NOT updated. Failed to apply https://patchwork.kernel.org/project/linux-block/list/?series=1046430
error message:

Cmd('git') failed due to: exit code(128)
  cmdline: git am --3way
  stdout: 'Applying: md/raid5: fix IO hang with degraded array with llbitmap
Using index info to reconstruct a base tree...
M	drivers/md/raid5.c
Falling back to patching base and 3-way merge...
Auto-merging drivers/md/raid5.c
No changes -- Patch already applied.
Applying: md/md-llbitmap: fix percpu_ref not resurrected on suspend timeout
Patch failed at 0002 md/md-llbitmap: fix percpu_ref not resurrected on suspend timeout'
  stderr: 'error: sha1 information is lacking or useless (drivers/md/md-llbitmap.c).
error: could not build fake ancestor
hint: Use 'git am --show-current-patch=diff' to see the failed patch
hint: When you have resolved this problem, run "git am --continue".
hint: If you prefer to skip this patch, run "git am --skip" instead.
hint: To restore the original branch and stop patching, run "git am --abort".
hint: Disable this message with "git config set advice.mergeConflict false"'

conflict:

@blktests-ci-kpd
blktests-ci-kpd Bot force-pushed the linus-master_base branch 3 times, most recently from 0525b37 to 6de2940 Compare February 13, 2026 13:13
blktests-ci-kpd Bot pushed a commit that referenced this pull request Feb 15, 2026
@chenhengqi @chenhuacai
LoongArch: BPF: Implement bpf_addr_space_cast instruction
4fdb5dd 
LLVM generates bpf_addr_space_cast instruction while translating pointers
between native (zero) address space and __attribute__((address_space(N))).
The addr_space=0 is reserved as bpf_arena address space.

rY = addr_space_cast(rX, 0, 1) is processed by the verifier and converted
to normal 32-bit move: wX = wY

rY = addr_space_cast(rX, 1, 0) has to be converted by JIT.

With this, the following test cases passed:

    $ ./test_progs -a arena_htab,arena_list,arena_strsearch,verifier_arena,verifier_arena_large
    #4/1     arena_htab/arena_htab_llvm:OK
    #4/2     arena_htab/arena_htab_asm:OK
    #4       arena_htab:OK
    #5/1     arena_list/arena_list_1:OK
    #5/2     arena_list/arena_list_1000:OK
    #5       arena_list:OK
    #7/1     arena_strsearch/arena_strsearch:OK
    #7       arena_strsearch:OK
    #507/1   verifier_arena/basic_alloc1:OK
    #507/2   verifier_arena/basic_alloc2:OK
    #507/3   verifier_arena/basic_alloc3:OK
    #507/4   verifier_arena/basic_reserve1:OK
    #507/5   verifier_arena/basic_reserve2:OK
    #507/6   verifier_arena/reserve_twice:OK
    #507/7   verifier_arena/reserve_invalid_region:OK
    #507/8   verifier_arena/iter_maps1:OK
    #507/9   verifier_arena/iter_maps2:OK
    #507/10  verifier_arena/iter_maps3:OK
    #507     verifier_arena:OK
    #508/1   verifier_arena_large/big_alloc1:OK
    #508/2   verifier_arena_large/access_reserved:OK
    #508/3   verifier_arena_large/request_partially_reserved:OK
    #508/4   verifier_arena_large/free_reserved:OK
    #508/5   verifier_arena_large/big_alloc2:OK
    #508     verifier_arena_large:OK
    Summary: 5/20 PASSED, 0 SKIPPED, 0 FAILED

Acked-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Tested-by: Vincent Li <vincent.mc.li@gmail.com>
Signed-off-by: Hengqi Chen <hengqi.chen@gmail.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
@blktests-ci-kpd
blktests-ci-kpd Bot force-pushed the linus-master_base branch 8 times, most recently from df85678 to 50e7070 Compare February 22, 2026 05:34
@blktests-ci-kpd

blktests-ci-kpd Bot commented Feb 22, 2026

Copy link
Copy Markdown
Author

At least one diff in series https://patchwork.kernel.org/project/linux-block/list/?series=1046430 irrelevant now for [{'archived': False, 'project': 241}] search patterns

@blktests-ci-kpd blktests-ci-kpd Bot closed this Feb 22, 2026
@blktests-ci-kpd
blktests-ci-kpd Bot deleted the series/1046430=>linus-master branch February 24, 2026 10:01
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Reviewers

No reviews

Assignees

No one assigned

Labels

linus-master new V1-ci-fail V1

Projects

None yet

Milestone

No milestone

Development

Successfully merging this pull request may close these issues.

2 participants

@kawasaki @hailan94