Date: Tue, 18 Jul 2023 17:01:33 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 272573] Lock order reversal with OpenVPN over UDP (udpinp) Message-ID: <bug-272573-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D272573 Bug ID: 272573 Summary: Lock order reversal with OpenVPN over UDP (udpinp) Product: Base System Version: CURRENT Hardware: Any OS: Any Status: New Severity: Affects Some People Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: pierre@freebsdfoundation.org While using OpenVPN on UDP, the kernel reported the following error: ``` Jul 18 16:27:30 kwarx kernel: lock order reversal: Jul 18 16:27:30 kwarx kernel: 1st 0xfffff801303b5c60 udpinp (udpinp, rw) @ /usr/home/khorben/Projects/FreeBSD/src/sys/netinet/udp_usrreq.c:1100 Jul 18 16:27:30 kwarx kernel: 2nd 0xfffff8015e199a88 if_ovpn_lock (if_ovpn_lock, rm) @ /usr/home/khorben/Projects/FreeBSD/src/sys/net/if_ovpn.c:2109 Jul 18 16:27:30 kwarx kernel: lock order if_ovpn_lock -> udpinp established= at: Jul 18 16:27:30 kwarx kernel: #0 0xffffffff80bbda0a at witness_checkorder+0= x30a Jul 18 16:27:30 kwarx kernel: #1 0xffffffff80b462b5 at _rw_wlock_cookie+0x65 Jul 18 16:27:30 kwarx kernel: #2 0xffffffff80d5e7be at udp_set_kernel_tunneling+0x4e Jul 18 16:27:30 kwarx kernel: #3 0xffffffff8294a3b9 at ovpn_ioctl_set+0xe69 Jul 18 16:27:30 kwarx kernel: #4 0xffffffff82948ded at ovpn_ioctl+0xed Jul 18 16:27:30 kwarx kernel: #5 0xffffffff80c7c600 at ifioctl+0x940 Jul 18 16:27:30 kwarx kernel: #6 0xffffffff80bc3ff6 at kern_ioctl+0x286 Jul 18 16:27:30 kwarx kernel: #7 0xffffffff80bc3d02 at sys_ioctl+0x152 Jul 18 16:27:30 kwarx kernel: #8 0xffffffff81047c19 at amd64_syscall+0x139 Jul 18 16:27:30 kwarx kernel: #9 0xffffffff8101a3bb at fast_syscall_common+= 0xf8 Jul 18 16:27:30 kwarx kernel: lock order udpinp -> if_ovpn_lock attempted a= t: Jul 18 16:27:30 kwarx kernel: #0 0xffffffff80bbe2be at witness_checkorder+0= xbbe Jul 18 16:27:30 kwarx kernel: #1 0xffffffff80b44e13 at _rm_rlock_debug+0x133 Jul 18 16:27:30 kwarx kernel: #2 0xffffffff82948e91 at ovpn_output+0x41 Jul 18 16:27:30 kwarx kernel: #3 0xffffffff80d296f6 at ip_output+0x13d6 Jul 18 16:27:30 kwarx kernel: #4 0xffffffff80d5e48c at udp_send+0xa0c Jul 18 16:27:30 kwarx kernel: #5 0xffffffff80bfabb1 at sosend_dgram+0x321 Jul 18 16:27:30 kwarx kernel: #6 0xffffffff80bfb7a9 at sousrsend+0x79 Jul 18 16:27:30 kwarx kernel: #7 0xffffffff80c02000 at kern_sendit+0x1c0 Jul 18 16:27:30 kwarx kernel: #8 0xffffffff80c02207 at sendit+0xb7 Jul 18 16:27:30 kwarx kernel: #9 0xffffffff80c0213d at sys_sendto+0x4d Jul 18 16:27:30 kwarx kernel: #10 0xffffffff81047c19 at amd64_syscall+0x139 Jul 18 16:27:30 kwarx kernel: #11 0xffffffff8101a3bb at fast_syscall_common+0xf8 ``` The kernel is 14.0-CURRENT, built on `Wed Jul 5 11:40:52 CEST 2023`. OpenVPN itself was obtained from binary ports: ``` # pkg info openvpn openvpn-2.6.5 Name : openvpn Version : 2.6.5 Installed on : Wed Jul 5 13:08:37 2023 CEST Origin : security/openvpn Architecture : FreeBSD:14:amd64 [...] Annotations : FreeBSD_version: 1400092 cpe : cpe:2.3:a:openvpn:openvpn:2.6.5:::::freebsd14:x64 repo_type : binary repository : FreeBSD ``` --=20 You are receiving this mail because: You are the assignee for the bug.=
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