commit ad814cad41a101a3afd03ed0fdc55e2efd696abf Author: Taylor Yu catalyst@torproject.org Date: Wed Sep 20 18:47:15 2017 -0500

Avoid assertion failure for state file clock skew

The clock_skew_warning() refactoring allowed calls from or_state_load() to control_event_bootstrap_problem() to occur prior bootstrap phase 0, causing an assertion failure. Initialize the bootstrap status prior to calling clock_skew_warning() from or_state_load(). --- changes/bug23607 | 4 ++++ src/or/statefile.c | 8 +++++++- 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/changes/bug23607 b/changes/bug23607 new file mode 100644 index 000000000..7aa48a94c --- /dev/null +++ b/changes/bug23607 @@ -0,0 +1,4 @@ + o Minor bugfixes (bootstrapping): + - Avoid an assertion failure when logging a state file clock skew + very early in bootstrapping. Fixes bug 23607; bugfix on + 0.3.2.1-alpha. diff --git a/src/or/statefile.c b/src/or/statefile.c index 86f26419b..2d579a022 100644 --- a/src/or/statefile.c +++ b/src/or/statefile.c @@ -34,6 +34,7 @@ #include "config.h" #include "confparse.h" #include "connection.h" +#include "control.h" #include "entrynodes.h" #include "hibernate.h" #include "rephist.h" @@ -405,9 +406,14 @@ or_state_load(void) /* Warn the user if their clock has been set backwards, * they could be tricked into using old consensuses */ time_t apparent_skew = time(NULL) - new_state->LastWritten; - if (apparent_skew < 0) + if (apparent_skew < 0) { + /* Initialize bootstrap event reporting because we might call + * clock_skew_warning() before the bootstrap state is + * initialized, causing an asserttion failure. */ + control_event_bootstrap(BOOTSTRAP_STATUS_STARTING, 0); clock_skew_warning(NULL, (long)apparent_skew, 1, LD_GENERAL, "local state file", fname); + } } else { log_info(LD_GENERAL, "Initialized state"); }