George Poulios 884b4604c2 Map user memory passed to accept() in kernel build ... Fixes an issue in kernel build where the user addresses passed to accept() would be accessed when the wrong MMU mappings were active. A crash would manifest when attempting to accept() on a TCP server socket for instance under significant load. The accept event handler would be called by the HP worker upon client connection. At this point, accept_tcpsender() would attempt to write to `addr` resulting in a page fault. Reproducibility would depend on the current system load (num tasks or CPU stress) but in loaded environments, it would crash almost 100% of the times. It should be noted that Linux does this the other way around: it operates on kernel stack allocated data and once done, it copies them to user. This can also be a viable alternative, albeit with one extra copy and a little extra memory. Signed-off-by: George Poulios <gpoulios@census-labs.com>		2024-12-20 00:57:40 +02:00
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accept.c	Map user memory passed to accept() in kernel build	2024-12-20 00:57:40 +02:00
CMakeLists.txt	fs: migrate to SPDX identifier	2024-11-06 01:58:54 +08:00
Make.defs	fs: migrate to SPDX identifier	2024-11-06 01:58:54 +08:00
socket.c	fs: migrate to SPDX identifier	2024-11-06 01:58:54 +08:00
socketpair.c	fs: migrate to SPDX identifier	2024-11-06 01:58:54 +08:00