Messages in this thread | | | From | Lukas Bulwahn <> | Date | Fri, 7 Jan 2022 16:00:39 +0100 | Subject | Observation of a memory leak with commit e98e49b2bbf7 ("io_uring: extend task put optimisations") |
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Dear Pavel, dear Jens,
In our syzkaller instance running on linux-next, https://elisa-builder-00.iol.unh.edu/syzkaller-next/, we have been observing a memory leak in copy_process for quite some time.
It is reproducible on v5.15-rc1, v5.15, v5.16-rc8 and next-20220106:
https://elisa-builder-00.iol.unh.edu/syzkaller-next/crash?id=1169da08a3e72457301987b70bcce62f0f49bdbb
So, it is in mainline, was released and has not been fixed in linux-next yet.
As syzkaller also provides a reproducer, we bisected this memory leak to be introduced with commit e98e49b2bbf7 ("io_uring: extend task put optimisations").
Could you please have a look how your commit introduces this memory leak? We will gladly support testing your fix in case help is needed.
Best regards,
Lukas
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