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pespin gerrit-no-reply at lists.osmocom.orgpespin has uploaded this change for review. ( https://gerrit.osmocom.org/c/osmo-bts/+/21356 ) Change subject: sysmobts-mgr: generate coredump and exit upon SIGABRT received ...................................................................... sysmobts-mgr: generate coredump and exit upon SIGABRT received 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: I35ae930b59c48892e5ad9a2826e05d6c5d415abc Fixes: OS#4865 --- M src/osmo-bts-sysmo/misc/sysmobts_mgr.c 1 file changed, 14 insertions(+), 3 deletions(-) git pull ssh://gerrit.osmocom.org:29418/osmo-bts refs/changes/56/21356/1 diff --git a/src/osmo-bts-sysmo/misc/sysmobts_mgr.c b/src/osmo-bts-sysmo/misc/sysmobts_mgr.c index dc7af3c..61b08b4 100644 --- a/src/osmo-bts-sysmo/misc/sysmobts_mgr.c +++ b/src/osmo-bts-sysmo/misc/sysmobts_mgr.c @@ -192,11 +192,11 @@ return 0; } -static void signal_handler(int signal) +static void signal_handler(int signum) { - fprintf(stderr, "signal %u received\n", signal); + fprintf(stderr, "signal %u received\n", signum); - switch (signal) { + switch (signum) { case SIGINT: case SIGTERM: sysmobts_check_temp(no_eeprom_write); @@ -204,6 +204,16 @@ exit(0); break; 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_full(tall_mgr_ctx, stderr); + signal(SIGABRT, SIG_DFL); + raise(SIGABRT); + break; case SIGUSR1: case SIGUSR2: talloc_report_full(tall_mgr_ctx, stderr); @@ -262,6 +272,7 @@ osmo_init_ignore_signals(); signal(SIGINT, &signal_handler); signal(SIGTERM, &signal_handler); + signal(SIGABRT, &signal_handler); signal(SIGUSR1, &signal_handler); signal(SIGUSR2, &signal_handler); -- To view, visit https://gerrit.osmocom.org/c/osmo-bts/+/21356 To unsubscribe, or for help writing mail filters, visit https://gerrit.osmocom.org/settings Gerrit-Project: osmo-bts Gerrit-Branch: master Gerrit-Change-Id: I35ae930b59c48892e5ad9a2826e05d6c5d415abc Gerrit-Change-Number: 21356 Gerrit-PatchSet: 1 Gerrit-Owner: pespin <pespin at sysmocom.de> Gerrit-MessageType: newchange -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.osmocom.org/pipermail/gerrit-log/attachments/20201125/ea228635/attachment.htm>