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/freebsd-11-stable/sys/kern/ | ||
H A D | kern_module.c | diff 134092 Fri Aug 20 19:47:48 MDT 2004 truckman 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. This may be a MFC candidate for RELENG_5. |
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