Date: Mon, 02 Feb 2026 15:28:45 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 292885] [netgraph] panic on creating ksocket with AF_LOCAL and SOCK_DGRAM Message-ID: <bug-292885-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=292885 Bug ID: 292885 Summary: [netgraph] panic on creating ksocket with AF_LOCAL and SOCK_DGRAM Product: Base System Version: 14.3-RELEASE Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: walker.thompson@urz.uni-heidelberg.de Issuing the command below triggers an instantaneous kernel panic. The same happens if the last argument, "local/dgram/", is changed to "local/dgram/0". Observed on an up-to-date 14.3-RELEASE system on bare metal as well as in a fresh test VM. With SOCK_STREAM ("local/stream/", "local/stream/0"), the socket is created successfully, can be bound, etc.. AF_INET datagram ("inet/dgram/udp") sockets are unaffected. root@freebsd:~> ngctl mkpeer ksocket sock local/dgram/ Fatal trap 12: page fault while in kernel mode cpuid = 1; apic id = 01 fault virtual address = 0x18 fault code = supervisor write data, page not present instruction pointer = 0x20:0xffffffff8286fd27 stack pointer = 0x28:0xfffffe008415a990 frame pointer = 0x28:0xfffffe008415a9b0 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, long 1, def32 0, gran 1 processor eflags = interrupt enabled, resume, IOPL = 0 current process = 774 (ngctl) rdi: fffff80004fa2300 rsi: fffff80004fa2300 rdx: 0000000000000001 rcx: 0000000000000000 r8: 0000000000420000 r9: 0000000000000000 rax: 0000000000000000 rbx: fffff80004517400 rbp: fffffe008415a9b0 r10: 0000000000000000 r11: 0000000000000000 r12: fffff80004fa2400 r13: fffff800039b5b00 r14: fffff800039b5c00 r15: fffff800039a1740 trap number = 12 panic: page fault cpuid = 1 time = 1770039231 KDB: stack backtrace: #0 0xffffffff80ba8f1d at kdb_backtrace+0x5d #1 0xffffffff80b5aa11 at vpanic+0x161 #2 0xffffffff80b5a8a3 at panic+0x43 #3 0xffffffff8104db7a at trap_pfault+0x3da #4 0xffffffff81023d88 at calltrap+0x8 #5 0xffffffff82868d61 at ng_mkpeer+0x111 #6 0xffffffff82866d6d at ng_apply_item+0x51d #7 0xffffffff828665cc at ng_snd_item+0x26c -- You are receiving this mail because: You are the assignee for the bug.home | help
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