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Zeeb" To: net@freebsd.org Subject: IPv6 panic (NULL * deref?) in nd6_ifnet_link_event Message-ID: <080s18s9-8q6r-75rr-s158-338413q14s4p@yvfgf.mnoonqbm.arg> X-OpenPGP-Key-Id: 0x14003F198FEFA3E77207EE8D2B58B8F83CCF1842 List-Id: Networking and TCP/IP with FreeBSD List-Archive: https://lists.freebsd.org/archives/freebsd-net List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-net@FreeBSD.org MIME-Version: 1.0 Content-Type: text/plain; format=flowed; charset=US-ASCII X-Rspamd-Queue-Id: 4Zvwwz2gLRz3RRV X-Spamd-Bar: --- X-Spamd-Result: default: False [-3.70 / 15.00]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-0.98)[-0.978]; NEURAL_HAM_SHORT(-0.72)[-0.718]; DMARC_POLICY_ALLOW(-0.50)[zabbadoz.net,none]; R_DKIM_ALLOW(-0.20)[zabbadoz.net:s=20240622]; R_SPF_ALLOW(-0.20)[+ip6:2003:a:140a:2200:6:594:fffe:19:c]; MIME_GOOD(-0.10)[text/plain]; RCVD_VIA_SMTP_AUTH(0.00)[]; ASN(0.00)[asn:3320, ipnet:2003::/19, country:DE]; MISSING_XM_UA(0.00)[]; ARC_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; SUBJECT_HAS_QUESTION(0.00)[]; RCVD_COUNT_THREE(0.00)[4]; RCPT_COUNT_ONE(0.00)[1]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; MLMMJ_DEST(0.00)[net@freebsd.org]; TO_DN_NONE(0.00)[]; PREVIOUSLY_DELIVERED(0.00)[net@freebsd.org]; TO_MATCH_ENVRCPT_ALL(0.00)[]; RCVD_TLS_LAST(0.00)[]; DKIM_TRACE(0.00)[zabbadoz.net:+] Hi, main of the last days. Fatal trap 12: page fault while in kernel mode cpuid = 2; apic id = 02 fault virtual address = 0x10 fault code = supervisor read data, page not present instruction pointer = 0x20:0xffffffff80dbd769 stack pointer = 0x28:0xfffffe0106296d60 frame pointer = 0x28:0xfffffe0106296d70 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 = 12 (swi6: task queue) rdi: fffff8002f997800 rsi: 000000000000001c rdx: 0000000000000000 rcx: 0000000000010000 r8: 0000000000000001 r9: ffffffffffffffff rax: 0000000000000000 rbx: fffff8002f997a18 rbp: fffffe0106296d70 r10: ffffffff81c4a1e8 r11: 0000000000000001 r12: fffff80001210700 r13: fffff80001210728 r14: fffff8002f997800 r15: 0000000000000001 trap number = 12 panic: page fault cpuid = 2 time = 1746903751 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe0106296a90 vpanic() at vpanic+0x136/frame 0xfffffe0106296bc0 panic() at panic+0x43/frame 0xfffffe0106296c20 trap_pfault() at trap_pfault+0x48d/frame 0xfffffe0106296c90 calltrap() at calltrap+0x8/frame 0xfffffe0106296c90 --- trap 0xc, rip = 0xffffffff80dbd769, rsp = 0xfffffe0106296d60, rbp = 0xfffffe0106296d70 --- nd6_ifnet_link_event() at nd6_ifnet_link_event+0x39/frame 0xfffffe0106296d70 do_link_state_change() at do_link_state_change+0x1b1/frame 0xfffffe0106296dc0 taskqueue_run_locked() at taskqueue_run_locked+0x1c2/frame 0xfffffe0106296e40 taskqueue_run() at taskqueue_run+0x4d/frame 0xfffffe0106296e60 ithread_loop() at ithread_loop+0x266/frame 0xfffffe0106296ef0 fork_exit() at fork_exit+0x82/frame 0xfffffe0106296f30 fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe0106296f30 --- trap 0x25b01e6e, rip = 0x52db004fa566ef34, rsp = 0xcadb9a4f3d667734, rbp = 0xde5a00adbd42c69c --- KDB: enter: panic (gdb) l * nd6_ifnet_link_event+0x39 0xffffffff80dbd769 is in nd6_ifnet_link_event (sys/netinet6/nd6_rtr.c:327). 322 static void 323 defrtr_ipv6_only_ipf_down(struct ifnet *ifp) 324 { 325 326 IF_AFDATA_WLOCK(ifp); 327 ND_IFINFO(ifp)->flags &= ~ND6_IFF_IPV6_ONLY; 328 IF_AFDATA_WUNLOCK(ifp); 329 } 330 #endif /* EXPERIMENTAL */ 331 -- Bjoern A. Zeeb r15:7