dhclient: Fix tests #23
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- Update instructions - Split long lines No functional change intended.
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Sep 11, 2023
netlink(4) calls back into the driver during detach and it attempts to start an internal synchronized op recursively, causing an interruptible hang. Fix it by failing the ioctl if the VI has been marked as DOOMED by cxgbe_detach. Here's the stack for the hang for reference. #6 begin_synchronized_op #7 cxgbe_media_status #8 ifmedia_ioctl #9 cxgbe_ioctl #10 if_ioctl #11 get_operstate_ether #12 get_operstate #13 dump_iface #14 rtnl_handle_ifevent #15 rtnl_handle_ifnet_event #16 rt_ifmsg #17 if_unroute #18 if_down #19 if_detach_internal #20 if_detach #21 ether_ifdetach #22 cxgbe_vi_detach #23 cxgbe_detach #24 DEVICE_DETACH MFC after: 3 days Sponsored by: Chelsio Communications
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Interesting fixes: 03c83f5 add __cxa_init_primary_exception (#23) 5d8a158 Fix two bugs in __cxa_end_cleanup() b00c6c5 Insert padding in __cxa_dependent_exception 45ca8b1 Insert padding in __cxa_exception struct for compatibility f2e5509 Fix unlock in two-word version and add missing comment. 6229590 Add an option for disabling emergency buffers. (#14)
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Interesting fixes (* were already cherry-picked): - 03c83f5 add __cxa_init_primary_exception (#23) * 5d8a158 Fix two bugs in __cxa_end_cleanup() * b00c6c5 Insert padding in __cxa_dependent_exception * 45ca8b1 Insert padding in __cxa_exception struct for compatibility * f2e5509 Fix unlock in two-word version and add missing comment. - 6229590 Add an option for disabling emergency buffers. (#14) MFC after: 2 weeks
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