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Two fixes:
- 9p now uses a variable size for its recv buffer, but every place
hadn't been updated properly to use it and some buffer overflows
have been found and needed fixing.
There's still one place where msize is incorrectly used in a safety
check (p9_check_errors), but all paths leading to it should already
be avoiding overflows and that patch took a bit more time to get
right for zero-copy requests so I'll send it for 6.2
- yet another race condition in p9_conn_cancel introduced by a
fix of a syzbot report in the same place, maybe at some point
we'll get it right without burning it all down...
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Merge tag '9p-for-6.1-rc7' of https://github.com/martinetd/linux
Pull 9p fixes from Dominique Martinet:
- 9p now uses a variable size for its recv buffer, but every place
hadn't been updated properly to use it and some buffer overflows have
been found and needed fixing.
There's still one place where msize is incorrectly used in a safety
check (p9_check_errors), but all paths leading to it should already
be avoiding overflows and that patch took a bit more time to get
right for zero-copy requests so I'll send it for 6.2
- yet another race condition in p9_conn_cancel introduced by a fix for
a syzbot report in the same place. Maybe at some point we'll get it
right without burning it all down...
* tag '9p-for-6.1-rc7' of https://github.com/martinetd/linux:
9p/xen: check logical size for buffer size
9p/fd: Use P9_HDRSZ for header size
9p/fd: Fix write overflow in p9_read_work
9p/fd: fix issue of list_del corruption in p9_fd_cancel()
fd64898dfe