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 |
|---|---|---|
| basic | ||
| coccinelle | ||
| dtc | ||
| genksyms | ||
| kconfig | ||
| ksymoops | ||
| mod | ||
| package | ||
| rt-tester | ||
| selinux | ||
| tracing | ||
| .gitignore | -rw-r--r-- | 75 bytes |
| Kbuild.include | -rw-r--r-- | 9.5 KB |
| Lindent | -rwxr-xr-x | 460 bytes |
| Makefile | -rw-r--r-- | 934 bytes |
| Makefile.build | -rw-r--r-- | 12.1 KB |
| Makefile.clean | -rw-r--r-- | 3.2 KB |
| Makefile.fwinst | -rw-r--r-- | 2.0 KB |
| Makefile.headersinst | -rw-r--r-- | 3.2 KB |
| Makefile.help | -rw-r--r-- | 68 bytes |
| Makefile.host | -rw-r--r-- | 6.5 KB |
| Makefile.lib | -rw-r--r-- | 9.1 KB |
| Makefile.modbuiltin | -rw-r--r-- | 1.8 KB |
| Makefile.modinst | -rw-r--r-- | 1.0 KB |
| Makefile.modpost | -rw-r--r-- | 5.1 KB |
| bin2c.c | -rw-r--r-- | 702 bytes |
| bloat-o-meter | -rwxr-xr-x | 1.7 KB |
| bootgraph.pl | -rw-r--r-- | 5.6 KB |
| checkincludes.pl | -rwxr-xr-x | 1.8 KB |
| checkkconfigsymbols.sh | -rwxr-xr-x | 1.8 KB |
| checkpatch.pl | -rwxr-xr-x | 75.5 KB |
| checkstack.pl | -rwxr-xr-x | 5.2 KB |
| checksyscalls.sh | -rwxr-xr-x | 5.5 KB |
| checkversion.pl | -rwxr-xr-x | 1.8 KB |
| cleanfile | -rwxr-xr-x | 3.4 KB |
| cleanpatch | -rwxr-xr-x | 5.0 KB |
| coccicheck | -rwxr-xr-x | 2.0 KB |
| config | -rwxr-xr-x | 2.6 KB |
| conmakehash.c | -rw-r--r-- | 6.0 KB |
| decodecode | -rwxr-xr-x | 1.9 KB |
| diffconfig | -rwxr-xr-x | 3.6 KB |
| export_report.pl | -rw-r--r-- | 4.2 KB |
| extract-ikconfig | -rwxr-xr-x | 1.3 KB |
| gcc-version.sh | -rw-r--r-- | 819 bytes |
| gcc-x86_32-has-stack-protector.sh | -rw-r--r-- | 183 bytes |
| gcc-x86_64-has-stack-protector.sh | -rw-r--r-- | 199 bytes |
| gen_initramfs_list.sh | -rw-r--r-- | 7.1 KB |
| get_maintainer.pl | -rwxr-xr-x | 34.3 KB |
| gfp-translate | -rw-r--r-- | 1.5 KB |
| headerdep.pl | -rwxr-xr-x | 3.5 KB |
| headers.sh | -rwxr-xr-x | 512 bytes |
| headers_check.pl | -rw-r--r-- | 2.7 KB |
| headers_install.pl | -rw-r--r-- | 1.5 KB |
| kallsyms.c | -rw-r--r-- | 15.2 KB |
| kernel-doc | -rwxr-xr-x | 61.1 KB |
| makelst | -rwxr-xr-x | 773 bytes |
| markup_oops.pl | -rw-r--r-- | 8.1 KB |
| mkcompile_h | -rwxr-xr-x | 2.5 KB |
| mkmakefile | -rw-r--r-- | 1.1 KB |
| mksysmap | -rw-r--r-- | 1.3 KB |
| mkuboot.sh | -rwxr-xr-x | 379 bytes |
| mkversion | -rw-r--r-- | 74 bytes |
| module-common.lds | -rw-r--r-- | 210 bytes |
| namespace.pl | -rwxr-xr-x | 13.0 KB |
| patch-kernel | -rwxr-xr-x | 9.8 KB |
| pnmtologo.c | -rw-r--r-- | 11.7 KB |
| profile2linkerlist.pl | -rw-r--r-- | 375 bytes |
| recordmcount.pl | -rwxr-xr-x | 17.2 KB |
| setlocalversion | -rwxr-xr-x | 3.7 KB |
| show_delta | -rwxr-xr-x | 3.0 KB |
| tags.sh | -rwxr-xr-x | 4.6 KB |
| unifdef.c | -rw-r--r-- | 31.6 KB |
| ver_linux | -rwxr-xr-x | 3.1 KB |
Computing file changes ...
