| commit | 2dc958fa2fe6987e7ab106bd97029a09a82fcd8d | |
| author | Stanislav Kinsbursky <skinsbursky@parallels.com> | |
| Mon, 1 Apr 2013 07:40:51 +0000 (1 11:40 +0400) | ||
| committer | Linus Torvalds <torvalds@linux-foundation.org> | |
| Tue, 2 Apr 2013 17:09:01 +0000 (2 10:09 -0700) | ||
| tree | c260602e6d7233a0e05f252c0dfcb4dae587b9d2 | treesnapshot (tar.gz zip) |
| parent | 118c9a45fdacc6fe57910fa1d048e2d5bbc193f4 | commitdiff |
ipc: set msg back to -EAGAIN if copy wasn't performed
Make sure that msg pointer is set back to error value in case of
MSG_COPY flag is set and desired message to copy wasn't found. This
garantees that msg is either a error pointer or a copy address.
Otherwise the last message in queue will be freed without unlinking from
the queue (which leads to memory corruption) and the dummy allocated
copy won't be released.
Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Make sure that msg pointer is set back to error value in case of
MSG_COPY flag is set and desired message to copy wasn't found. This
garantees that msg is either a error pointer or a copy address.
Otherwise the last message in queue will be freed without unlinking from
the queue (which leads to memory corruption) and the dummy allocated
copy won't be released.
Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| ipc/msg.c | diffblobblamehistory |