Hello,

Firefox on bullseye armhf crashed after upgrading to 91esr. When I
tested with a fresh profile, firefox seemed to crash only when logged in.

Steps to reproduce:

1. run firefox-esr -profilemanager
2. create a new profile
3. log in to firefox account
4. wait some time or manually choose "sync now"

The firefox-esr-dbgsym is not ready yet for 91esr, so there's not much
interesting information I can get using gdb, except for the top of the
stack is memset(). So I submitted the crash
report to
https://crash-stats.mozilla.org/report/index/46eb6fa4-cff3-4156-a01b-7b1e90220101

Regards,
Wenbin Lv