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nullb: free zones when device is power-off - #1137

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nullb: free zones when device is power-off#1137
blktests-ci-kpd[bot] wants to merge 1 commit into
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@blktests-ci-kpd blktests-ci-kpd Bot commented Aug 14, 2026

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Pull request for series with
subject: nullb: free zones when device is power-off
version: 1
url: https://patchwork.kernel.org/project/linux-block/list/?series=1145940

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blktests-ci-kpd Bot commented Aug 14, 2026

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Upstream branch: 3aa1dca
series: https://patchwork.kernel.org/project/linux-block/list/?series=1145940
version: 1

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blktests-ci-kpd Bot force-pushed the linus-master_base branch 2 times, most recently from d89ab11 to fdba928 Compare August 16, 2026 18:34
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blktests-ci-kpd Bot commented Aug 16, 2026

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Upstream branch: fd923b3
series: https://patchwork.kernel.org/project/linux-block/list/?series=1145940
version: 1

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blktests-ci-kpd Bot force-pushed the series/1145940=>linus-master branch from 052a8e4 to eee90c8 Compare August 16, 2026 19:50
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blktests-ci-kpd Bot commented Aug 17, 2026

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Upstream branch: 8d3ae59
series: https://patchwork.kernel.org/project/linux-block/list/?series=1145940
version: 1

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blktests-ci-kpd Bot force-pushed the series/1145940=>linus-master branch from eee90c8 to f651ef8 Compare August 17, 2026 16:37
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blktests-ci-kpd Bot commented Aug 19, 2026

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Upstream branch: bd5f485
series: https://patchwork.kernel.org/project/linux-block/list/?series=1145940
version: 1

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blktests-ci-kpd Bot force-pushed the series/1145940=>linus-master branch from f651ef8 to dadbef1 Compare August 19, 2026 05:45
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blktests-ci-kpd Bot commented Aug 25, 2026

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Upstream branch: 66498c7
series: https://patchwork.kernel.org/project/linux-block/list/?series=1145940
version: 1

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blktests-ci-kpd Bot force-pushed the series/1145940=>linus-master branch from dadbef1 to 81e0aba Compare August 25, 2026 03:51
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blktests-ci-kpd Bot commented Aug 26, 2026

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Upstream branch: 502d457
series: https://patchwork.kernel.org/project/linux-block/list/?series=1145940
version: 1

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blktests-ci-kpd Bot force-pushed the series/1145940=>linus-master branch from 81e0aba to 65be70b Compare August 26, 2026 21:10
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blktests-ci-kpd Bot commented Aug 29, 2026

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Upstream branch: cf72cbb
series: https://patchwork.kernel.org/project/linux-block/list/?series=1145940
version: 1

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blktests-ci-kpd Bot force-pushed the series/1145940=>linus-master branch from 65be70b to 6e0c099 Compare August 29, 2026 07:09
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blktests-ci-kpd Bot commented Aug 31, 2026

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Upstream branch: cee9395
series: https://patchwork.kernel.org/project/linux-block/list/?series=1145940
version: 1

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blktests-ci-kpd Bot force-pushed the series/1145940=>linus-master branch from 6e0c099 to 00fe3ab Compare August 31, 2026 10:55
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blktests-ci-kpd Bot commented Sep 2, 2026

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Upstream branch: 89a3129
series: https://patchwork.kernel.org/project/linux-block/list/?series=1145940
version: 1

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blktests-ci-kpd Bot force-pushed the series/1145940=>linus-master branch from 00fe3ab to c405553 Compare September 2, 2026 09:28
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blktests-ci-kpd Bot commented Sep 4, 2026

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Upstream branch: bc35965
series: https://patchwork.kernel.org/project/linux-block/list/?series=1145940
version: 1

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blktests-ci-kpd Bot force-pushed the series/1145940=>linus-master branch from c405553 to 16422c3 Compare September 4, 2026 06:42
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blktests-ci-kpd Bot commented Sep 7, 2026

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Upstream branch: df29080
series: https://patchwork.kernel.org/series/1145940/
version: 1

Pull request is NOT updated. Failed to apply https://patchwork.kernel.org/series/1145940/
error message:

Cmd('git') failed due to: exit code(128)
  cmdline: git am --3way
  stdout: 'Patch is empty.
When you have resolved this problem, run "git am --continue".
If you prefer to skip this patch, run "git am --skip" instead.
To record the empty patch as an empty commit, run "git am --allow-empty".
To restore the original branch and stop patching, run "git am --abort".'

conflict:

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blktests-ci-kpd Bot commented Sep 8, 2026

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Upstream branch: 28924df
series: https://patchwork.kernel.org/series/1145940/
version: 1

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blktests-ci-kpd Bot force-pushed the series/1145940=>linus-master branch from 16422c3 to 66d63fa Compare September 8, 2026 16:32
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blktests-ci-kpd Bot commented Sep 9, 2026

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Upstream branch: 893e117
series: https://patchwork.kernel.org/series/1145940/
version: 1

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blktests-ci-kpd Bot force-pushed the series/1145940=>linus-master branch from 66d63fa to 19510b0 Compare September 9, 2026 08:27
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blktests-ci-kpd Bot commented Sep 10, 2026

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Upstream branch: 50d05c7
series: https://patchwork.kernel.org/series/1145940/
version: 1

@ea1davis kernel-patches-daemon
nullb: free zones when device is power-off
4f33cb2 
A user powers off the device by writing 0 to `./config/nullb/nullb1/power`
via the nullb configfs interface, and later powers it on by writing 1
to the same file.

When the power-off command is executed, the zones created by the previous
task are not freed before new zones are created upon powering on again;
this results in the memory leak described in [1].

Add an operation to free zones within nullb_device_power_store().

[1]
BUG: memory leak
unreferenced object 0xffff888126990000 (size 56000):
  backtrace (crc 5c9573f8):
    null_init_zoned_dev+0x108/0x520 drivers/block/null_blk/zoned.c:94
    null_add_dev+0x8a6/0xae0 drivers/block/null_blk/main.c:1993
    nullb_device_power_store+0xf9/0x1f0 drivers/block/null_blk/main.c:501
    flush_write_buffer fs/configfs/file.c:207 [inline]
    configfs_write_iter+0x10d/0x1a0 fs/configfs/file.c:229
    new_sync_write fs/read_write.c:595 [inline]
    vfs_write+0x3ac/0x720 fs/read_write.c:687

Fixes: cedcafa ("nullb: add interface to power on disk")
Reported-by: syzbot+f57d67a92532a98a562d@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=f57d67a92532a98a562d
Tested-by: syzbot+f57d67a92532a98a562d@syzkaller.appspotmail.com
Signed-off-by: Edward Adam Davis <eadavis@qq.com>
@blktests-ci-kpd
blktests-ci-kpd Bot force-pushed the series/1145940=>linus-master branch from 19510b0 to 4f33cb2 Compare September 10, 2026 15:58
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