Date: Wed, 01 Nov 2023 03:52:11 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 274840] devmatch kernel panic with 10 xn interfaces Message-ID: <bug-274840-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D274840 Bug ID: 274840 Summary: devmatch kernel panic with 10 xn interfaces Product: Base System Version: 14.0-RELEASE Hardware: amd64 OS: Any Status: New Severity: Affects Many People Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: andrew@netplex.net Created attachment 246037 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=3D246037&action= =3Dedit core.txt Running devmatch (at boot time or after boot) with 10 Xen "xn" interfaces causes a kernel panic crash. With fewer interfaces it does not crash. Adding many interfaces with the system on-line (not running devmatch) does not cra= sh. Tested and effects 13.2-p4 and 14.0-RC3. This also cause problems with FreeBSD based apps like OPNsense and PFsense. Running on XCP 8.2.1 (Xen). Running FreeBSD amd64 GENERIC kernel ``` FreeBSD 14.0-RC3 FreeBSD 14.0-RC3 #0 releng/14.0-n265368-c6cfdc130554: Fri= Oct 27 05:57:28 UTC 2023=20=20=20=20 root@releng1.nyi.freebsd.org:/usr/obj/usr/src/amd64.amd64/sys/GENERIC amd64 panic: page fault Reading symbols from /boot/kernel/kernel... Reading symbols from /usr/lib/debug//boot/kernel/kernel.debug... Unread portion of the kernel message buffer: Fatal trap 12: page fault while in kernel mode cpuid =3D 0; apic id =3D 00 fault virtual address =3D 0x0 fault code =3D supervisor read data, page not present instruction pointer =3D 0x20:0xffffffff81008a64 stack pointer =3D 0x28:0xfffffe0076295b30 frame pointer =3D 0x28:0xfffffe0076295b30 code segment =3D base 0x0, limit 0xfffff, type 0x1b =3D DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags =3D interrupt enabled, resume, IOPL =3D 0 current process =3D 3078 (devmatch) rdi: 0000000000000000 rsi: 0000000000000000 rdx: 0000000000000018 rcx: 0000000000000000 r8: fefefefefefefeff r9: 8080808080808080 rax: fffff80006f99000 rbx: 0000000000000000 rbp: fffffe0076295b30 r10: 0000000000000000 r11: df9290bcccff8d9a r12: 0000000000000002 r13: 0000000000000002 r14: fffffe0076295b68 r15: fffff8007419c000 trap number =3D 12 panic: page fault cpuid =3D 0 time =3D 1698809363 KDB: stack backtrace: #0 0xffffffff80b9002d at kdb_backtrace+0x5d #1 0xffffffff80b43132 at vpanic+0x132 #2 0xffffffff80b42ff3 at panic+0x43 #3 0xffffffff8100c85c at trap_fatal+0x40c #4 0xffffffff8100c8af at trap_pfault+0x4f #5 0xffffffff80fe3818 at calltrap+0x8 #6 0xffffffff80b9c515 at sbuf_cat+0x15 #7 0xffffffff80b83d55 at sysctl_devices+0x125 #8 0xffffffff80b54910 at sysctl_root_handler_locked+0x90 #9 0xffffffff80b53d41 at sysctl_root+0x241 #10 0xffffffff80b543c6 at userland_sysctl+0x176 #11 0xffffffff80b5420c at sys___sysctl+0x5c #12 0xffffffff8100d119 at amd64_syscall+0x109 #13 0xffffffff80fe412b at fast_syscall_common+0xf8 Uptime: 2m6s Dumping 268 out of 4059=20 ``` --=20 You are receiving this mail because: You are the assignee for the bug.=
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