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884b4604c2
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> |
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| .. | ||
| aio | ||
| binfs | ||
| cromfs | ||
| driver | ||
| event | ||
| fat | ||
| hostfs | ||
| inode | ||
| littlefs | ||
| mmap | ||
| mnemofs | ||
| mount | ||
| mqueue | ||
| nfs | ||
| notify | ||
| nxffs | ||
| partition | ||
| procfs | ||
| romfs | ||
| rpmsgfs | ||
| semaphore | ||
| shm | ||
| smartfs | ||
| socket | ||
| spiffs | ||
| tmpfs | ||
| unionfs | ||
| userfs | ||
| v9fs | ||
| vfs | ||
| zipfs | ||
| CMakeLists.txt | ||
| fs_heap.c | ||
| fs_heap.h | ||
| fs_initialize.c | ||
| Kconfig | ||
| Make.defs | ||
| Makefile | ||