Wan periodic reset causes system reboot.
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Nice. Also interesting.
Ok so set the line in /etc/pSense-ddb.conf. I used:
script kdb.enter.default=capture on; bt; show registers; show pcpu; capture off; dump; resetThen reboot to apply that.
I then tested it by running
sysctl debug.kdb.panic=1which immediately panics the box and runs the script. At the console you see:panic: kdb_sysctl_panic cpuid = 3 time = 1697460855 KDB: enter: panic [ thread pid 1455 tid 100508 ] Stopped at kdb_enter+0x32: movq $0,0x2344f43(%rip) db:0:kdb.enter.default> capture on db:0:kdb.enter.default> bt Tracing pid 1455 tid 100508 td 0xfffffe00b7ceaac0 kdb_enter() at kdb_enter+0x32/frame 0xfffffe00b13afa10 vpanic() at vpanic+0x163/frame 0xfffffe00b13afb40 panic() at panic+0x43/frame 0xfffffe00b13afba0 kdb_sysctl_panic() at kdb_sysctl_panic+0x61/frame 0xfffffe00b13afbd0 sysctl_root_handler_locked() at sysctl_root_handler_locked+0x90/frame 0xfffffe00b13afc20 sysctl_root() at sysctl_root+0x216/frame 0xfffffe00b13afca0 userland_sysctl() at userland_sysctl+0x176/frame 0xfffffe00b13afd50 sys___sysctl() at sys___sysctl+0x5c/frame 0xfffffe00b13afe00 amd64_syscall() at amd64_syscall+0x109/frame 0xfffffe00b13aff30 fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe00b13aff30 --- syscall (202, FreeBSD ELF64, __sysctl), rip = 0xb03aaf1e18a, rsp = 0xb03a86d9c88, rbp = 0xb03a86d9cc0 --- db:0:kdb.enter.default> show registers cs 0x20 ds 0x3b es 0x3b fs 0x13 gs 0x1b ss 0x28 rax 0x12 rcx 0xffffffff814589e2 rdx 0x3f8 rbx 0x100 rsp 0xfffffe00b13afa10 rbp 0xfffffe00b13afa10 rsi 0xc3b4cdc4 rdi 0x4 r8 0x7ac3b4cdc4 r9 0xfffffe00b7ceaac0 r10 0xfffffe00b13af8f0 r11 0xcedfc2df9afff59c r12 0 r13 0 r14 0xffffffff814b6685 r15 0xfffffe00b7ceaac0 rip 0xffffffff80d388c2 kdb_enter+0x32 rflags 0x86 kdb_enter+0x32: movq $0,0x2344f43(%rip) db:0:kdb.enter.default> show pcpu cpuid = 3 dynamic pcpu = 0xfffffe008efd7f00 curthread = 0xfffffe00b7ceaac0: pid 1455 tid 100508 critnest 1 "sysctl" curpcb = 0xfffffe00b7ceafe0 fpcurthread = 0xfffffe00b7ceaac0: pid 1455 "sysctl" idlethread = 0xfffffe0011fbde40: tid 100006 "idle: cpu3" self = 0xffffffff84013000 curpmap = 0xfffff8012468fd38 tssp = 0xffffffff84013384 rsp0 = 0xfffffe00b13b0000 kcr3 = 0xffffffffffffffff ucr3 = 0xffffffffffffffff scr3 = 0x0 gs32p = 0xffffffff84013404 ldt = 0xffffffff84013444 tss = 0xffffffff84013434 curvnet = 0xfffff80001203980 db:0:kdb.enter.default> capture off db:0:kdb.enter.default> dump Dumping 702 out of 8050 MB:..3%..12%..21%..32%..42%..51%..62%..71%..83%..92% Dump complete db:0:kdb.enter.default> reset Uptime: 3m30sAfter rebooting you should see the crash report in the gui with the vmcore offered to download.
If that's all working then delete that core and try to panic it by removing the interface again. Hopefully the core is not bigger than 1G if you can trigger it soon enough after boot.
Steve
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@stephenw10
Thanks Steve - as the issue is intermittent for me I probably need more swap.Can I just boot from the USB installer and manually tweak the existing partitions using gpart delete / resize and whatever ZFS uses for regrow?
(It's been a long time since I have used partition commands but probably not much has changed over a couple of decades... other than my memory...)
Hmm, may be easier to get a new install USB but does it offer an option to set the swap partition size during the install (ie I don't remember one)?
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Yes, you can just set the size during the install:
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@stephenw10
Ok, even my phat fingers can cope with that.
Now all I need is some WAN time to myself.
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I've racked-up the Supermicro and it has taken-over for pfSense duties, leaving the Netgate 6100 free for testing. What could possibly go wrong?
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So bluuuuuue!
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Reinstalled everything on the 6100 and presuming you guys are running more 23.09d than anything else, I pushed it on to the latest dev load. I'll run 23.05.1 on the other device for now, so much swapping around today. Probably missed something along the way.
Anyway, partitioned for a 4 GB Swap - hopefully that will be spacious enough for you:
[23.09-BETA]/root: gpart show => 40 115189680 nda0 GPT (55G) 40 532480 1 efi (260M) 532520 1024 2 freebsd-boot (512K) 533544 984 - free - (492K) 534528 8388608 3 freebsd-swap (4.0G) 8923136 106264576 4 freebsd-zfs (51G) 115187712 2008 - free - (1.0M) [23.09-BETA]/root:I should get some quiet WAN time tomorrow to do interface testing and hopefully achieve a kernel dump. No doubt it will be more intermittent than usual, just to be difficult.
I'll remember to run your script too:
script kdb.enter.default=capture on; bt; show registers; show pcpu; capture off; dump; reset️ -
Excellent, that looks good. Let's hope it reveals some useful data. Thanks.
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You can try manually triggering a panic to make sure it catches a coredump. Run:
sysctl debug.kdb.panic=1 -
@stephenw10
Sorry Steve, this proved to be beyond me. I guess I will have to wait for the GUI button to be implemented or for a genuine idiot proof step-by-step guide to be written as this has eaten through way too many hours over too many days.I think I hit the assumed-knowledge barrier too often, with steps given, only to be belatedly added to with instructions like 'using console mode' or 'use kernel debug mode option 6' or 'did you edit some .conf file' or 'follow 'x' thread' or 'install 'x' package but only by method 'y'.
So what did work:
- got console working from macOS (mislabeled as GNU screen in pfSense docs)
- got the swap partition size changed via console
- fresh install
- installed pfSense-kernel-debug-pfSense pkg from the GUI command line
- ran
kdb.enter.default=capture on;(etc) script from regular CLI - reboots (many)
kdb.enter.default=captureshown under /root- reboot into kernel debug mode via console (option 6 etc)
- trigger panic via CLI using sysctl
debug.kdb.panic=1 - console scrolls through something that looks like a core dump...
- crash report in /var/crash with info and text dump files
- no core dump offered in the GUI
- no core dump file found in /var/crash
Clearly I am typing with a little frustration (sorry about that) but perhaps you can spot something useful in the above.
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I'm sorry. Yes it will be much better when there's a gui option.
You shouldn't need to add the debug kernel just to get the coredump.
The important steps are:
- Make sure you have enough SWAP space (you do.
- Edit /etc/pfSense-ddb.conf so it contains the different default line like:
# $FreeBSD$ # # This file is read when going to multi-user and its contents piped thru # ``ddb'' to define debugging scripts. # # see ``man 4 ddb'' and ``man 8 ddb'' for details. # script lockinfo=show locks; show alllocks; show lockedvnods script pfs=bt ; show registers ; show pcpu ; run lockinfo ; acttrace ; ps ; alltrace # kdb.enter.panic panic(9) was called. #script kdb.enter.default=textdump set; capture on; run pfs ; capture off; textdump dump; reset script kdb.enter.default=capture on; bt; show registers; show pcpu; capture off; dump; reset # kdb.enter.witness witness(4) detected a locking error. script kdb.enter.witness=run lockinfo- Reboot.
- (Optionally) Run
sysctl debug.kdb.panic=1to test the setup. You should see it writing out the coredump to swap in the console after all the backtraces scroll past.
Steve
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@stephenw10 said in Wan periodic reset causes system reboot.:
- Edit /etc/pSense-ddb.conf so it contains the different default line like:
Hmmm, no such file found on this device. No idea why!
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Oh sorry I typo'd that.
Should be
/etc/pfSense-ddb.conf -
Haha - should have spotted that.
[23.09-BETA]/root: cat /etc/pfSense-ddb.conf # $FreeBSD$ # # This file is read when going to multi-user and its contents piped thru # ``ddb'' to define debugging scripts. # # see ``man 4 ddb'' and ``man 8 ddb'' for details. # script lockinfo=show locks; show alllocks; show lockedvnods script pfs=bt ; show registers ; show pcpu ; run lockinfo ; acttrace ; ps ; alltrace # kdb.enter.panic panic(9) was called. # script kdb.enter.default=textdump set; capture on; run pfs ; capture off; textdump dump; reset script kdb.enter.default=capture on; bt; show registers; show pcpu; capture off; dump; reset # kdb.enter.witness witness(4) detected a locking error. script kdb.enter.witness=run lockinfo [23.09-BETA]/root:Now, do I have a typo of my own?
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Looks fine to me. Reboot to apply it and then try a test panic.
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Wife watching Bake Off on catch-up; I would die a painful death.
I'll be brave when she is elsewhere.
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@stephenw10
I think I have it. Now, how do I get this massive vmcore and info file to you?<118>Netgate pfSense Plus 23.09-BETA amd64 20231020-0600 <118>Bootup complete <6>ng0: changing name to 'pppoe0' pf_test6: kif == NULL, if_xname pppoe0 <6>ng0: changing name to 'pppoe0' Fatal trap 12: page fault while in kernel mode cpuid = 3; apic id = 18 fault virtual address = 0x10 fault code = supervisor read data, page not present instruction pointer = 0x20:0xffffffff80f4e116 stack pointer = 0x0:0xfffffe00850b6b60 frame pointer = 0x0:0xfffffe00850b6b90 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 = 2 (clock (3)) rdi: fffff80203712800 rsi: 000000000000001c rdx: fffff8013760d878 rcx: fffff8013760d878 r8: 00000000ffffffbd r9: 0000000000000018 rax: 0000000000000000 rbx: 0000000000000000 rbp: fffffe00850b6b90 r10: fffff802033dd8c0 r11: fffff8016f5e5000 r12: 0000000000010300 r13: fffff80203676b98 r14: fffffe00850b6b68 r15: 0000000000000018 trap number = 12 panic: page fault cpuid = 3 time = 1697905286 KDB: enter: panic️ -
You can upload it here: https://nc.netgate.com/nextcloud/index.php/s/ywzFPM3F8GZnRdb
Or I can download it from somewhere if that's easier, just send me a link in chat.
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@stephenw10 said in Wan periodic reset causes system reboot.:
https://nc.netgate.com/nextcloud/index.php/s/ywzFPM3F8GZnRdb
Uploaded to your link. Usual privacy request, or I'll come looking for you.
If you can acknowledge they arrived ok, that would be great.
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