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ublk: use unchecked copy helpers for bio page data#693

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ublk: use unchecked copy helpers for bio page data#693
blktests-ci[bot] wants to merge 1 commit intolinus-master_basefrom
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@blktests-ci blktests-ci Bot commented Mar 28, 2026

Pull request for series with
subject: ublk: use unchecked copy helpers for bio page data
version: 1
url: https://patchwork.kernel.org/project/linux-block/list/?series=1073962

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blktests-ci Bot commented Mar 28, 2026

Upstream branch: be762d8
series: https://patchwork.kernel.org/project/linux-block/list/?series=1073962
version: 1

@blktests-ci blktests-ci Bot force-pushed the linus-master_base branch from 4439509 to 0bd4175 Compare March 29, 2026 11:48
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blktests-ci Bot commented Mar 29, 2026

Upstream branch: cbfffcc
series: https://patchwork.kernel.org/project/linux-block/list/?series=1073962
version: 1

@blktests-ci blktests-ci Bot force-pushed the series/1073962=>linus-master branch from 633b090 to ad90533 Compare March 29, 2026 11:51
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blktests-ci Bot commented Mar 30, 2026

Upstream branch: 7aaa804
series: https://patchwork.kernel.org/project/linux-block/list/?series=1073962
version: 1

@blktests-ci blktests-ci Bot force-pushed the series/1073962=>linus-master branch from ad90533 to a07c60b Compare March 30, 2026 14:59
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blktests-ci Bot commented Mar 31, 2026

Upstream branch: d0c3bcd
series: https://patchwork.kernel.org/project/linux-block/list/?series=1073962
version: 1

@blktests-ci blktests-ci Bot force-pushed the series/1073962=>linus-master branch from a07c60b to e7cec3f Compare March 31, 2026 12:59
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blktests-ci Bot commented Apr 1, 2026

Upstream branch: d0c3bcd
series: https://patchwork.kernel.org/project/linux-block/list/?series=1075507
version: 2

@blktests-ci blktests-ci Bot added V2 and removed V1 V1-ci-fail labels Apr 1, 2026
@blktests-ci blktests-ci Bot force-pushed the series/1073962=>linus-master branch from e7cec3f to a5d6dc2 Compare April 1, 2026 01:34
@blktests-ci blktests-ci Bot force-pushed the linus-master_base branch from 255b4bf to 3236861 Compare April 1, 2026 02:20
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blktests-ci Bot commented Apr 1, 2026

Upstream branch: 9147566
series: https://patchwork.kernel.org/project/linux-block/list/?series=1075507
version: 2

@blktests-ci blktests-ci Bot force-pushed the series/1073962=>linus-master branch from a5d6dc2 to d7d94ae Compare April 1, 2026 02:25
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blktests-ci Bot commented Apr 1, 2026

Upstream branch: 9147566
series: https://patchwork.kernel.org/project/linux-block/list/?series=1075507
version: 2

@blktests-ci blktests-ci Bot force-pushed the series/1073962=>linus-master branch from d7d94ae to 02e3a8e Compare April 1, 2026 15:24
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blktests-ci Bot commented Apr 2, 2026

Upstream branch: 9147566
series: https://patchwork.kernel.org/project/linux-block/list/?series=1075507
version: 2

@blktests-ci blktests-ci Bot force-pushed the series/1073962=>linus-master branch from 02e3a8e to 0502ec8 Compare April 2, 2026 07:55
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blktests-ci Bot commented Apr 10, 2026

Upstream branch: 9a9c8ce
series: https://patchwork.kernel.org/project/linux-block/list/?series=1075507
version: 2

@blktests-ci blktests-ci Bot force-pushed the series/1073962=>linus-master branch from 3e1fadb to 455b899 Compare April 10, 2026 01:01
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blktests-ci Bot commented Apr 13, 2026

Upstream branch: 028ef9c
series: https://patchwork.kernel.org/project/linux-block/list/?series=1075507
version: 2

@blktests-ci blktests-ci Bot force-pushed the series/1073962=>linus-master branch from 455b899 to 116358c Compare April 13, 2026 06:30
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blktests-ci Bot commented Apr 14, 2026

Upstream branch: d60bc14
series: https://patchwork.kernel.org/project/linux-block/list/?series=1075507
version: 2

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blktests-ci Bot commented Apr 15, 2026

Upstream branch: d60bc14
series: https://patchwork.kernel.org/project/linux-block/list/?series=1081785
version: 3

@blktests-ci blktests-ci Bot added V3 and removed V2 V2-ci-pass labels Apr 15, 2026
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blktests-ci Bot commented Apr 21, 2026

Upstream branch: b4e0758
series: https://patchwork.kernel.org/project/linux-block/list/?series=1081785
version: 3

@blktests-ci blktests-ci Bot force-pushed the series/1073962=>linus-master branch from 3be6034 to 41eff06 Compare April 21, 2026 07:01
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blktests-ci Bot commented Apr 22, 2026

Upstream branch: 6596a02
series: https://patchwork.kernel.org/project/linux-block/list/?series=1081785
version: 3

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blktests-ci Bot commented Apr 23, 2026

Upstream branch: 507bd4b
series: https://patchwork.kernel.org/project/linux-block/list/?series=1081785
version: 3

@blktests-ci blktests-ci Bot force-pushed the series/1073962=>linus-master branch from 45298f0 to a2d3153 Compare April 23, 2026 17:08
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blktests-ci Bot commented Apr 24, 2026

Upstream branch: dd6c438
series: https://patchwork.kernel.org/project/linux-block/list/?series=1081785
version: 3

@blktests-ci blktests-ci Bot force-pushed the series/1073962=>linus-master branch from a2d3153 to 431b119 Compare April 24, 2026 01:05
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blktests-ci Bot commented Apr 24, 2026

Upstream branch: dd6c438
series: https://patchwork.kernel.org/project/linux-block/list/?series=1081785
version: 3

@kawasaki
ublk: use unchecked copy helpers for bio page data
8105fbe 
Bio pages may originate from slab caches that lack a usercopy region
(e.g. jbd2 frozen metadata buffers allocated via jbd2_alloc()).
When CONFIG_HARDENED_USERCOPY is enabled, copy_to_iter() calls
check_copy_size() which rejects these slab pages, triggering a
kernel BUG in usercopy_abort().

This is a false positive: the data is ordinary block I/O content —
the same data the loop driver writes to its backing file via
vfs_iter_write().  The bvec length is always trusted, so the size
check in check_copy_size() is not needed either.

Switch to _copy_to_iter()/_copy_from_iter() which skip the
check_copy_size() wrapper while the underlying copy_to_user()
remains unchanged.

Acked-by: Caleb Sander Mateos <[email protected]>
Fixes: 2299cee ("ublk: use copy_{to,from}_iter() for user copy")
Signed-off-by: Ming Lei <[email protected]>
@blktests-ci blktests-ci Bot force-pushed the series/1073962=>linus-master branch from 431b119 to 8105fbe Compare April 24, 2026 08:00
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