Revision 9aea5a65aa7a1af9a4236dfaeb0088f1624f9919 authored by Roland McGrath on 08 September 2010, 02:37:06 UTC, committed by Linus Torvalds on 10 September 2010, 15:10:26 UTC
An execve with a very large total of argument/environment strings can take a really long time in the execve system call. It runs uninterruptibly to count and copy all the strings. This change makes it abort the exec quickly if sent a SIGKILL. Note that this is the conservative change, to interrupt only for SIGKILL, by using fatal_signal_pending(). It would be perfectly correct semantics to let any signal interrupt the string-copying in execve, i.e. use signal_pending() instead of fatal_signal_pending(). We'll save that change for later, since it could have user-visible consequences, such as having a timer set too quickly make it so that an execve can never complete, though it always happened to work before. Signed-off-by: Roland McGrath <roland@redhat.com> Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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| File | Mode | Size |
|---|---|---|
| Kconfig | -rw-r--r-- | 3.3 KB |
| Makefile | -rw-r--r-- | 1.1 KB |
| README | -rw-r--r-- | 7.9 KB |
| bitmap.c | -rw-r--r-- | 37.0 KB |
| dir.c | -rw-r--r-- | 8.8 KB |
| do_balan.c | -rw-r--r-- | 57.0 KB |
| file.c | -rw-r--r-- | 10.3 KB |
| fix_node.c | -rw-r--r-- | 77.2 KB |
| hashes.c | -rw-r--r-- | 3.6 KB |
| ibalance.c | -rw-r--r-- | 35.2 KB |
| inode.c | -rw-r--r-- | 92.0 KB |
| ioctl.c | -rw-r--r-- | 5.5 KB |
| item_ops.c | -rw-r--r-- | 18.7 KB |
| journal.c | -rw-r--r-- | 124.1 KB |
| lbalance.c | -rw-r--r-- | 41.4 KB |
| lock.c | -rw-r--r-- | 2.6 KB |
| namei.c | -rw-r--r-- | 44.1 KB |
| objectid.c | -rw-r--r-- | 6.9 KB |
| prints.c | -rw-r--r-- | 20.7 KB |
| procfs.c | -rw-r--r-- | 14.7 KB |
| resize.c | -rw-r--r-- | 6.2 KB |
| stree.c | -rw-r--r-- | 64.3 KB |
| super.c | -rw-r--r-- | 62.3 KB |
| tail_conversion.c | -rw-r--r-- | 9.1 KB |
| xattr.c | -rw-r--r-- | 26.6 KB |
| xattr_acl.c | -rw-r--r-- | 12.7 KB |
| xattr_security.c | -rw-r--r-- | 2.9 KB |
| xattr_trusted.c | -rw-r--r-- | 1.4 KB |
| xattr_user.c | -rw-r--r-- | 1.3 KB |
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