JDK-8214061 : Buffer written into itself
- Type: Bug
- Component: core-svc
- Sub-Component: debugger
- Affected Version: 8,11,12
- Priority: P4
- Status: Resolved
- Resolution: Fixed
- Submitted: 2018-11-19
- Updated: 2019-09-04
- Resolved: 2018-12-04
The Version table provides details related to the release that this issue/RFE will be addressed.
Unresolved : Release in which this issue/RFE will be addressed.
Resolved: Release in which this issue/RFE has been resolved.
Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.
To download the current JDK release, click here.
Unresolved : Release in which this issue/RFE will be addressed.
Resolved: Release in which this issue/RFE has been resolved.
Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.
To download the current JDK release, click here.
| JDK 11 | JDK 12 | Other |
|---|---|---|
| 11.0.10-oracleFixed | 12 b23Fixed  |
openjdk8u212Fixed |
Related Reports
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Relates :
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Description
In one fatal error code path, snprintf() is given its output buffer as
an input string.
src/jdk.jdwp.agent/share/native/libjdwp/debugInit.c line 645:
(void)snprintf(buf, sizeof(buf), "JDWP %s", buf);
This was found by compiling with GCC 8.1
$ make all
Building target 'all' in configuration 'linux-x86_64-server-release'
Updating support/modules_libs/jdk.jdwp.agent/libjdwp.so due to 1 file(s)
/home/stooke/dev/openjdk/jdk12/src/jdk.jdwp.agent/share/native/libjdwp/debugInit.c: In function ���jniFatalError���:
/home/stooke/dev/openjdk/jdk12/src/jdk.jdwp.agent/share/native/libjdwp/debugInit.c:650:24: error: passing argument 1 to restrict-qualified parameter aliases with argument 4 [-Werror=restrict]
(void)snprintf(buf, sizeof(buf), "JDWP %s", buf);
^~~ ~~~
/home/stooke/dev/openjdk/jdk12/src/jdk.jdwp.agent/share/native/libjdwp/debugInit.c: In function ���jniFatalError.constprop���:
/home/stooke/dev/openjdk/jdk12/src/jdk.jdwp.agent/share/native/libjdwp/debugInit.c:650:48: error: ���%s��� directive output may be truncated writing up to 511 bytes into a region of size 507 [-Werror=format-truncation=]
(void)snprintf(buf, sizeof(buf), "JDWP %s", buf);
^~ ~~~
/home/stooke/dev/openjdk/jdk12/src/jdk.jdwp.agent/share/native/libjdwp/debugInit.c:650:15: note: ���snprintf��� output between 6 and 517 bytes into a destination of size 512
(void)snprintf(buf, sizeof(buf), "JDWP %s", buf);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
gmake[3]: *** [Lib-jdk.jdwp.agent.gmk:54: /home/stooke/dev/openjdk/jdk12/build/linux-x86_64-server-release/support/native/jdk.jdwp.agent/libjdwp/debugInit.o] Error 1
gmake[2]: *** [make/Main.gmk:215: jdk.jdwp.agent-libs] Error 2
gmake[2]: *** Waiting for unfinished jobs....
^Cmake[1]: *** [/home/stooke/dev/openjdk/jdk12/make/Init.gmk:310: main] Interrupt
make: *** [/home/stooke/dev/openjdk/jdk12/make/Init.gmk:186: all] Interrupt
Comments
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