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| author | Ilya Leoshkevich <iii@linux.ibm.com> | 2024-03-12 01:07:01 +0100 |
|---|---|---|
| committer | Alex Bennée <alex.bennee@linaro.org> | 2024-03-13 11:43:52 +0000 |
| commit | 6971998e241d8edc842b165b447f706c05166ae6 (patch) | |
| tree | 5f63ec6012b3bf3918119d6c54ac9228175c3b88 /gdbstub | |
| parent | bbc0543b1b8231eb9712aa9b93091a1ccb2a08cd (diff) | |
| download | qemu-6971998e241d8edc842b165b447f706c05166ae6.zip qemu-6971998e241d8edc842b165b447f706c05166ae6.tar.gz qemu-6971998e241d8edc842b165b447f706c05166ae6.tar.bz2 | |
gdbstub: Fix double close() of the follow-fork-mode socket
When the terminal GDB_FORK_ENABLED state is reached, the coordination
socket is not needed anymore and is therefore closed. However, if there
is a communication error between QEMU gdbstub and GDB, the generic
error handling code attempts to close it again.
Fix by closing it later - before returning - instead.
Fixes: Coverity CID 1539966
Fixes: d547e711a8a5 ("gdbstub: Implement follow-fork-mode child")
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240312001813.13720-1-iii@linux.ibm.com>
Diffstat (limited to 'gdbstub')
| -rw-r--r-- | gdbstub/user.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/gdbstub/user.c b/gdbstub/user.c index 2005f33..edeb72e 100644 --- a/gdbstub/user.c +++ b/gdbstub/user.c @@ -517,6 +517,7 @@ void gdbserver_fork_end(CPUState *cpu, pid_t pid) switch (gdbserver_user_state.fork_state) { case GDB_FORK_ENABLED: if (gdbserver_user_state.running_state) { + close(fd); return; } QEMU_FALLTHROUGH; @@ -542,7 +543,6 @@ void gdbserver_fork_end(CPUState *cpu, pid_t pid) gdbserver_user_state.fork_state = GDB_FORK_ACTIVE; break; case GDB_FORK_ENABLE: - close(fd); gdbserver_user_state.fork_state = GDB_FORK_ENABLED; break; case GDB_FORK_DISABLE: @@ -557,7 +557,6 @@ void gdbserver_fork_end(CPUState *cpu, pid_t pid) if (write(fd, &b, 1) != 1) { goto fail; } - close(fd); gdbserver_user_state.fork_state = GDB_FORK_ENABLED; break; case GDB_FORK_DISABLING: |