Date: Mon, 30 Aug 2004 08:11:03 +0000 (UTC) From: Don Lewis <truckman@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/kern kern_module.c Message-ID: <200408300811.i7U8B3h1091849@repoman.freebsd.org>
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truckman 2004-08-30 08:11:03 UTC
FreeBSD src repository
Modified files: (Branch: RELENG_5)
sys/kern kern_module.c
Log:
MFC kern_module.c 1.46
> Don't bother calling the module event handlers from module_shutdown()
> in the shutdown_final state if the RB_NOSYNC flag is set.
>
> The specific motivation in this case is that a system panic in an
> interrupt context results in a call to module_shutdown(), which
> calls g_modevent(), which calls g_malloc(..., M_WAITOK), which
> results in a second panic. While g_modevent() could be fixed to
> not call malloc() for MOD_SHUTDOWN events (which it doesn't handle
> in any case), it is probably also a good idea to entirely skip the
> execution of the module shutdown handlers after a panic.
Approved by: re (kensmith)
Revision Changes Path
1.45.2.1 +3 -0 src/sys/kern/kern_module.c
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