I've copied the dump and core.txt files to http://www.catwhisker.org/~david/FreeBSD/head/r367127/ Here's a copy/paste of the stack trace (from the core.txt.3 file): p 12: page fault while in kernel mode cpuid = 4; apic id = 04 fault virtual address = 0xfffff80840000000 fault code = supervisor read data, page not present instruction pointer = 0x20:0xffffffff80495f03 stack pointer = 0x0:0xffffffff8241d748 frame pointer = 0x0:0xffffffff8241d7a0 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 (irq36: iwn0) trap number = 12 panic: page fault cpuid = 4 time = 1604056852 KDB: stack backtrace: db_trace_self_wrapper() at 0xffffffff804a69db = db_trace_self_wrapper+0x2b/frame 0xffffffff8241d3f0 vpanic() at 0xffffffff80baf802 = vpanic+0x182/frame 0xffffffff8241d440 panic() at 0xffffffff80baf5c3 = panic+0x43/frame 0xffffffff8241d4a0 trap_fatal() at 0xffffffff8102c2f7 = trap_fatal+0x387/frame 0xffffffff8241d500 trap_pfault() at 0xffffffff8102c397 = trap_pfault+0x97/frame 0xffffffff8241d560 trap() at 0xffffffff8102b98b = trap+0x2ab/frame 0xffffffff8241d670 calltrap() at 0xffffffff80fffa08 = calltrap+0x8/frame 0xffffffff8241d670 --- trap 0xc, rip = 0xffffffff80495f03, rsp = 0xffffffff8241d748, rbp = 0xffffffff8241d7a0 --- rijndaelEncrypt() at 0xffffffff80495f03 = rijndaelEncrypt+0x233/frame 0xffffffff8241d7a0 ccmp_decap() at 0xffffffff80d08bc1 = ccmp_decap+0x421/frame 0xffffffff8241d8b0 ieee80211_crypto_decap() at 0xffffffff80d07955 = ieee80211_crypto_decap+0x125/frame 0xffffffff8241d900 sta_input() at 0xffffffff80d41dec = sta_input+0x43c/frame 0xffffffff8241d9a0 iwn_notif_intr() at 0xffffffff8069949c = iwn_notif_intr+0x137c/frame 0xffffffff8241dab0 iwn_intr() at 0xffffffff8068f4f8 = iwn_intr+0x2b8/frame 0xffffffff8241db20 ithread_loop() at 0xffffffff80b6dbb9 = ithread_loop+0x279/frame 0xffffffff8241dbb0 fork_exit() at 0xffffffff80b6a690 = fork_exit+0x80/frame 0xffffffff8241dbf0 fork_trampoline() at 0xffffffff81000a5e = fork_trampoline+0xe/frame 0xffffffff8241dbf0 --- trap 0, rip = 0, rsp = 0, rbp = 0 --- KDB: enter: panic __curthread () at /usr/src/sys/amd64/include/pcpu_aux.h:55 55 __asm("movq %%gs:%P1,%0" : "=r" (td) : "n" (offsetof(struct pcpu, (kgdb) #0 __curthread () at /usr/src/sys/amd64/include/pcpu_aux.h:55 #1 doadump (textdump=0) at /usr/src/sys/kern/kern_shutdown.c:394 #2 0xffffffff804a3cea in db_dump (dummy=<optimized out>, dummy2=<optimized out>, dummy3=<unavailable>, dummy4=<unavailable>) at /usr/src/sys/ddb/db_command.c:575 #3 0xffffffff804a3ab0 in db_command (last_cmdp=<optimized out>, cmd_table=<optimized out>, dopager=1) at /usr/src/sys/ddb/db_command.c:482 #4 0xffffffff804a380d in db_command_loop () at /usr/src/sys/ddb/db_command.c:535 #5 0xffffffff804a6b26 in db_trap (type=<optimized out>, code=<optimized out>) at /usr/src/sys/ddb/db_main.c:270 #6 0xffffffff80bfb5c4 in kdb_trap (type=3, code=0, tf=<optimized out>) at /usr/src/sys/kern/subr_kdb.c:699 #7 0xffffffff8102be9e in trap (frame=0xffffffff8241d320) at /usr/src/sys/amd64/amd64/trap.c:576 #8 <signal handler called> #9 kdb_enter (why=0xffffffff8120d701 "panic", msg=<optimized out>) at /usr/src/sys/kern/subr_kdb.c:486 #10 0xffffffff80baf81e in vpanic (fmt=<optimized out>, ap=<optimized out>) at /usr/src/sys/kern/kern_shutdown.c:901 #11 0xffffffff80baf5c3 in panic ( fmt=0xffffffff81c79aa8 <cnputs_mtx> "\362\357\034\201\377\377\377\377") at /usr/src/sys/kern/kern_shutdown.c:838 #12 0xffffffff8102c2f7 in trap_fatal (frame=0xffffffff8241d680, eva=18446735313050009600) at /usr/src/sys/amd64/amd64/trap.c:915 #13 0xffffffff8102c397 in trap_pfault (frame=0xffffffff8241d680, usermode=<optimized out>, signo=<optimized out>, ucode=<optimized out>) at /usr/src/sys/amd64/amd64/trap.c:732 #14 0xffffffff8102b98b in trap (frame=0xffffffff8241d680) at /usr/src/sys/amd64/amd64/trap.c:398 #15 <signal handler called> #16 rijndaelEncrypt (rk=<optimized out>, Nr=<optimized out>, pt=<optimized out>, ct=0xffffffff8241d830 "\277\243\ff\211\335\330\v5\234\035{\210\330\320\327Fe\235>\226\026\025c\266n\325\305\205]\251%\001\002\004\030\326!\"\037") at /usr/src/sys/crypto/rijndael/rijndael-alg-fst.c:1000 #17 0xffffffff80d08bc1 in ccmp_decrypt (key=0xfffffe106978a160, pn=25627, m=0xfffff8010ffc9b00, hdrlen=<optimized out>) at /usr/src/sys/net80211/ieee80211_crypto_ccmp.c:623 #18 ccmp_decap (k=<optimized out>, m=<optimized out>, hdrlen=<optimized out>) at /usr/src/sys/net80211/ieee80211_crypto_ccmp.c:284 #19 0xffffffff80d07955 in ieee80211_crypto_decap (ni=<optimized out>, m=0xfffff8010ffc9b00, hdrlen=26, key=0xffffffff8241d920) at /usr/src/sys/net80211/ieee80211_crypto.c:684 #20 0xffffffff80d41dec in sta_input (ni=<optimized out>, m=0xfffff8010ffc9b00, rxs=<optimized out>, rssi=<optimized out>, nf=<optimized out>) at /usr/src/sys/net80211/ieee80211_sta.c:773 #21 0xffffffff8069949c in iwn_rx_done (sc=0xfffffe1033319000, desc=<optimized out>, data=<optimized out>) at /usr/src/sys/dev/iwn/if_iwn.c:3191 #22 iwn_notif_intr (sc=<optimized out>) at /usr/src/sys/dev/iwn/if_iwn.c:4018 #23 0xffffffff8068f4f8 in iwn_intr (arg=0xfffffe1033319000) at /usr/src/sys/dev/iwn/if_iwn.c:4337 #24 0xffffffff80b6dbb9 in intr_event_execute_handlers (p=<optimized out>, ie=0xfffff8000c52b300) at /usr/src/sys/kern/kern_intr.c:1168 #25 ithread_execute_handlers (p=<optimized out>, ie=0xfffff8000c52b300) at /usr/src/sys/kern/kern_intr.c:1181 #26 ithread_loop (arg=<optimized out>) at /usr/src/sys/kern/kern_intr.c:1269 #27 0xffffffff80b6a690 in fork_exit ( callout=0xffffffff80b6d940 <ithread_loop>, arg=0xfffff8000d18ef00, frame=0xffffffff8241dc00) at /usr/src/sys/kern/kern_fork.c:1052 #28 <signal handler called> (kgdb) This happened while my laptop was running: FreeBSD g1-55.catwhisker.org 13.0-CURRENT FreeBSD 13.0-CURRENT #43 r367127M/367127: Thu Oct 29 05:52:40 PDT 2020 root_at_g1-55.catwhisker.org:/common/S4/obj/usr/src/amd64.amd64/sys/CANARY amd64 1300123 1300123 during the "make buildkernel" phase of an in-place source update to r367160. As often happens while I'm running head, there was an "iwn firmware panic" (see, e.g., https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=214435); record of it may be found in /var/log/messages, starting around: <2>1 2020-10-30T11:05:07.327958+00:00 g1-55.catwhisker.org kernel - - - Expensive timeout(9) function: 0xffffffff80d8d2f0(0xfffffe1067a408f0) 0.840172647 s <2>1 2020-10-30T11:07:36.367805+00:00 g1-55.catwhisker.org kernel - - - iwn0: iwn_intr: fatal firmware error <2>1 2020-10-30T11:07:36.367830+00:00 g1-55.catwhisker.org kernel - - - firmware error log: <2>1 2020-10-30T11:07:36.367839+00:00 g1-55.catwhisker.org kernel - - - error type = "UNKNOWN" (0x0000001D) and the "WiFi" LED on the laptop went dark. As I was trying to do some work on another machine (while logged in to that machine from the laptop), the loss of connectivity was ... disruptive. While I was mildly gratified that (this time) the "make buildkernel" appeared to be proceeding despite the iwn(4) issue(s), I also wanted to get back to what I was doing. So after a few minutes -- when it became apparent that the link wasn't being recovered on its own -- I switched from X11 to vty1 (to leave vty0 for console messages), logged in as root, and issued: service netif restart wlan0 after a couple of minutes (during which the "make buildkernel" was continuing), the "service netif restart wlan0" had not yet completed, so I sent it a SIGNIFO (via ^T), and (as I recall), it indocated that the process was invoking ifconfig, and there was some mention of a function whose name included "epoch". I resumed waiting; after another minute or so, I trued ^T again, and there appeared to be no progress. After waiting another 30 seconds or so, I tried to bail out via ^C; that appeared to be ineffective. So after waiting another 10 - 15 seconds or so, I tried backgrounding (^Z), followed by "kill %1". It was shortly after that the panic occurred. Which may well -- to some extent -- have been self-inflicted. That said, the iwn firmware panics are not something I can control (as far as I know -- please let me know how I can control them if I'm incoorrect on that score). For that matter, I have no particular attachment to this NIC -- I'm open to a suggestion for any NIC with the same (miniPCI) form factor that will work well with FreeBSD. Peace, david -- David H. Wolfskill david_at_catwhisker.org I have voted to fire Mr. Trump. With prejudice. See http://www.catwhisker.org/~david/publickey.gpg for my public key.
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