Date: Thu, 2 Nov 2006 11:47:38 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/ddb db_command.c Message-ID: <200611021147.kA2Bld9Q036266@repoman.freebsd.org>
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kib 2006-11-02 11:47:38 UTC
FreeBSD src repository
Modified files:
sys/ddb db_command.c
Log:
On trap while inside ddb, the trap handler calls kdb_reenter(), that
longjmp to the default context. As result, "alltrace" command may
be prematurely terminated (without error message). This is happens,
for instance, when system is low on memory and referenced page in
kernel-mode thread stack is swapped out.
Protect "alltrace" against termination on trap by setting temporary
kdb_jmpbuf context.
Submitted by: Peter Holm
Revision Changes Path
1.72 +14 -6 src/sys/ddb/db_command.c
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