Date: Thu, 17 Apr 2025 17:37:13 +0800 From: Zhenlei Huang <zlei@FreeBSD.org> To: Mark Millard <marklmi@yahoo.com> Cc: FreeBSD Current <freebsd-current@freebsd.org>, Mark Johnston <markj@freebsd.org> Subject: Re: "Invoking IPv6 network device address event may sleep with the following non-sleepable locks held"; "sleepable after non-sleepable" Message-ID: <F1971A5B-6C30-4CCF-AF94-823FD1C06CA5@FreeBSD.org> In-Reply-To: <0DD42879-97C2-400F-BD94-12A36513B811@yahoo.com>
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[-- Attachment #1 --] > On Apr 17, 2025, at 5:17 AM, Mark Millard <marklmi@yahoo.com> wrote: > > Context: An aarch64 PkgBase kernel and world boot under Parallels > on macOS (M4 MAX): > > FreeBSD 15.0-CURRENT main-n276258-c5773d366ecc GENERIC arm64 aarch64 1500035 > > . . . > vtnet0: link state changed to UP > Invoking IPv6 network device address event may sleep with the following non-sleepable locks held: > exclusive sleep mutex vtnet0-rx0 (vtnet0-rx0) r = 0 (0xffffa000c0b3e480) locked @ /home/pkgbuild/worktrees/main/sys/dev/virtio/network/if_vtnet.c:2202 > stack backtrace: > #0 0xffff000000530f0c at witness_debugger+0x60 > #1 0xffff000000532140 at witness_warn+0x408 > #2 0xffff00000069ede8 at in6_update_ifa+0xa68 > #3 0xffff0000006cbcb0 at in6_ifadd+0x1dc > #4 0xffff0000006c80f8 at nd6_ra_input+0xe38 > #5 0xffff000000699200 at icmp6_input+0x900 > #6 0xffff0000006b2c54 at ip6_input+0xf64 > #7 0xffff000000613a04 at netisr_dispatch_src+0xd8 > #8 0xffff0000005f58d4 at ether_demux+0x174 > #9 0xffff0000005f6f80 at ether_nh_input+0x374 > #10 0xffff000000613a04 at netisr_dispatch_src+0xd8 > #11 0xffff0000005f5d24 at ether_input+0xdc > #12 0xffff000000328ea4 at vtnet_rxq_eof+0x6f4 > #13 0xffff0000003286ec at vtnet_rx_vq_process+0xb0 > #14 0xffff00000031f824 at vtpci_intx_intr+0xe8 > #15 0xffff00000046e0e4 at ithread_loop+0x29c > #16 0xffff00000046a2b0 at fork_exit+0x78 > #17 0xffff0000008897f8 at fork_trampoline+0x18 > lock order reversal: (sleepable after non-sleepable) > 1st 0xffffa000c0b3e480 vtnet0-rx0 (vtnet0-rx0, sleep mutex) @ /home/pkgbuild/worktrees/main/sys/dev/virtio/network/if_vtnet.c:2202 > 2nd 0xffff000001129640 in6_multi_sx (in6_multi_sx, sx) @ /home/pkgbuild/worktrees/main/sys/netinet6/in6_mcast.c:1217 > lock order vtnet0-rx0 -> in6_multi_sx attempted at: > #0 0xffff000000530aac at witness_checkorder+0xad0 > #1 0xffff0000004c405c at _sx_xlock+0x70 > #2 0xffff0000006a7a68 at in6_joingroup+0x48 > #3 0xffff00000069f01c at in6_update_ifa+0xc9c > #4 0xffff0000006cbcb0 at in6_ifadd+0x1dc > #5 0xffff0000006c80f8 at nd6_ra_input+0xe38 > #6 0xffff000000699200 at icmp6_input+0x900 > #7 0xffff0000006b2c54 at ip6_input+0xf64 > #8 0xffff000000613a04 at netisr_dispatch_src+0xd8 > #9 0xffff0000005f58d4 at ether_demux+0x174 > #10 0xffff0000005f6f80 at ether_nh_input+0x374 > #11 0xffff000000613a04 at netisr_dispatch_src+0xd8 > #12 0xffff0000005f5d24 at ether_input+0xdc > #13 0xffff000000328ea4 at vtnet_rxq_eof+0x6f4 > #14 0xffff0000003286ec at vtnet_rx_vq_process+0xb0 > #15 0xffff00000031f824 at vtpci_intx_intr+0xe8 > #16 0xffff00000046e0e4 at ithread_loop+0x29c > #17 0xffff00000046a2b0 at fork_exit+0x78 > Starting Network: lo0 vtnet0. > . . . > > > === > Mark Millard > marklmi at yahoo.com > > This is a known ( WIP ) issue. See https://reviews.freebsd.org/D45950 <https://reviews.freebsd.org/D45950>; . Best regards, Zhenlei [-- Attachment #2 --] <html><head><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Apr 17, 2025, at 5:17 AM, Mark Millard <<a href="mailto:marklmi@yahoo.com" class="">marklmi@yahoo.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div class="">Context: An aarch64 PkgBase kernel and world boot under Parallels<br class="">on macOS (M4 MAX):<br class=""><br class="">FreeBSD 15.0-CURRENT main-n276258-c5773d366ecc GENERIC arm64 aarch64 1500035<br class=""><br class="">. . .<br class="">vtnet0: link state changed to UP<br class="">Invoking IPv6 network device address event may sleep with the following non-sleepable locks held:<br class="">exclusive sleep mutex vtnet0-rx0 (vtnet0-rx0) r = 0 (0xffffa000c0b3e480) locked @ /home/pkgbuild/worktrees/main/sys/dev/virtio/network/if_vtnet.c:2202<br class="">stack backtrace:<br class="">#0 0xffff000000530f0c at witness_debugger+0x60<br class="">#1 0xffff000000532140 at witness_warn+0x408<br class="">#2 0xffff00000069ede8 at in6_update_ifa+0xa68<br class="">#3 0xffff0000006cbcb0 at in6_ifadd+0x1dc<br class="">#4 0xffff0000006c80f8 at nd6_ra_input+0xe38<br class="">#5 0xffff000000699200 at icmp6_input+0x900<br class="">#6 0xffff0000006b2c54 at ip6_input+0xf64<br class="">#7 0xffff000000613a04 at netisr_dispatch_src+0xd8<br class="">#8 0xffff0000005f58d4 at ether_demux+0x174<br class="">#9 0xffff0000005f6f80 at ether_nh_input+0x374<br class="">#10 0xffff000000613a04 at netisr_dispatch_src+0xd8<br class="">#11 0xffff0000005f5d24 at ether_input+0xdc<br class="">#12 0xffff000000328ea4 at vtnet_rxq_eof+0x6f4<br class="">#13 0xffff0000003286ec at vtnet_rx_vq_process+0xb0<br class="">#14 0xffff00000031f824 at vtpci_intx_intr+0xe8<br class="">#15 0xffff00000046e0e4 at ithread_loop+0x29c<br class="">#16 0xffff00000046a2b0 at fork_exit+0x78<br class="">#17 0xffff0000008897f8 at fork_trampoline+0x18<br class="">lock order reversal: (sleepable after non-sleepable)<br class=""> 1st 0xffffa000c0b3e480 vtnet0-rx0 (vtnet0-rx0, sleep mutex) @ /home/pkgbuild/worktrees/main/sys/dev/virtio/network/if_vtnet.c:2202<br class=""> 2nd 0xffff000001129640 in6_multi_sx (in6_multi_sx, sx) @ /home/pkgbuild/worktrees/main/sys/netinet6/in6_mcast.c:1217<br class="">lock order vtnet0-rx0 -> in6_multi_sx attempted at:<br class="">#0 0xffff000000530aac at witness_checkorder+0xad0<br class="">#1 0xffff0000004c405c at _sx_xlock+0x70<br class="">#2 0xffff0000006a7a68 at in6_joingroup+0x48<br class="">#3 0xffff00000069f01c at in6_update_ifa+0xc9c<br class="">#4 0xffff0000006cbcb0 at in6_ifadd+0x1dc<br class="">#5 0xffff0000006c80f8 at nd6_ra_input+0xe38<br class="">#6 0xffff000000699200 at icmp6_input+0x900<br class="">#7 0xffff0000006b2c54 at ip6_input+0xf64<br class="">#8 0xffff000000613a04 at netisr_dispatch_src+0xd8<br class="">#9 0xffff0000005f58d4 at ether_demux+0x174<br class="">#10 0xffff0000005f6f80 at ether_nh_input+0x374<br class="">#11 0xffff000000613a04 at netisr_dispatch_src+0xd8<br class="">#12 0xffff0000005f5d24 at ether_input+0xdc<br class="">#13 0xffff000000328ea4 at vtnet_rxq_eof+0x6f4<br class="">#14 0xffff0000003286ec at vtnet_rx_vq_process+0xb0<br class="">#15 0xffff00000031f824 at vtpci_intx_intr+0xe8<br class="">#16 0xffff00000046e0e4 at ithread_loop+0x29c<br class="">#17 0xffff00000046a2b0 at fork_exit+0x78<br class="">Starting Network: lo0 vtnet0.<br class="">. . .<br class=""><br class=""><br class="">===<br class="">Mark Millard<br class="">marklmi at <a href="http://yahoo.com" class="">yahoo.com</a><br class=""><br class=""><br class=""></div></div></blockquote></div><div class=""><br class=""></div><div class="">This is a known ( WIP ) issue. See <a href="https://reviews.freebsd.org/D45950" class="">https://reviews.freebsd.org/D45950</a> .</div><br class=""><div class=""> <div>Best regards,</div><div>Zhenlei</div> </div> <br class=""></body></html>help
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