Date: Tue, 13 Jun 2023 16:45:54 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 271983] mi_switch hang in KVM on Sapphire Rapids running NET_EPOCH_DRAIN_CALLBACKS Message-ID: <bug-271983-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D271983 Bug ID: 271983 Summary: mi_switch hang in KVM on Sapphire Rapids running NET_EPOCH_DRAIN_CALLBACKS Product: Base System Version: CURRENT Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: rcm@rcm.sh I am seeing a strange issue running CURRENT on KVM on Sapphire Rapids. If I create an interface like `ifconfig wg create` and then destroy the interface via `ifconfig wg0 destroy`, the process hangs deep within the ker= nel. load: 1.55 cmd: ifconfig 2277 [runnable] 31.14r 0.00u 0.00s 0% 3276k mi_switch+0x175 sched_bind+0xbc epoch_drain_callbacks+0x179 wg_clone_destroy+0x25c if_clone_destroyif_flags+0x69 if_clone_destroy+0xff ifioctl+0x8d3 kern_ioctl+0x1fe sys_ioctl+0x154 amd64_syscall+0x140 fast_syscall_common+0xf8 --=20 You are receiving this mail because: You are the assignee for the bug.=
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