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main: generate coredump and exit upon SIGABRT received

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Previous code relied on abort() switching sigaction to SIG_FDL +
retriggering SIGABRT in case the signal handler returns, which would
then generate the coredump + terminate the process.
However, if a SIGABRT is received from somewhere else (kill -SIGABRT),
then the process would print the talloc report and continue running,
which is not desired.

Change-Id: I3a3ff56cb2d740a33731ecfdf76aa32606872883
Fixes: OS#4865
This commit is contained in:
Pau Espin Pedrol
2020-11-25 17:50:21 +01:00
parent 94def47fdf
commit 57db77f185
1 changed files with 11 additions and 0 deletions
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11
Transceiver52M/osmo-trx.cpp
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@@ -177,6 +177,17 @@ static void sig_handler(int signo)
gshutdown = true; gshutdown = true;
break; break;
case SIGABRT: case SIGABRT:
/* in case of abort, we want to obtain a talloc report and
* then run default SIGABRT handler, who will generate coredump
* and abort the process. abort() should do this for us after we
* return, but program wouldn't exit if an external SIGABRT is
* received.
*/
talloc_report(tall_trx_ctx, stderr);
talloc_report_full(tall_trx_ctx, stderr);
signal(SIGABRT, SIG_DFL);
raise(SIGABRT);
break;
case SIGUSR1: case SIGUSR1:
talloc_report(tall_trx_ctx, stderr); talloc_report(tall_trx_ctx, stderr);
talloc_report_full(tall_trx_ctx, stderr); talloc_report_full(tall_trx_ctx, stderr);