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Differential D41280

kdb: Permit a NULL thread credential in kdb_backend_permitted()
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Authored by markj on Aug 1 2023, 4:56 PM.
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stevek
mhorne
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rGbd16c274c382: kdb: Permit a NULL thread credential in kdb_backend_permitted()
Summary

Early during boot, thread0 runs with td->td_ucred == NULL. This is
fixed up in proc0_init() at SI_SUB_INTRINSIC. If a panic occurs before
then, rather than dereference a NULL pointer, simply allow the thread to
enter KDB.

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rG FreeBSD src repository
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Buildable 52938
Build 49829: arc lint + arc unit

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sys/
kern/
14 lines

Diff 125434

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sys/kern/subr_kdb.c

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