Date: Sun, 3 Nov 2024 05:21:59 -0800 From: Rick Macklem <rick.macklem@gmail.com> To: current@freebsd.org Subject: Re: Panic after main-n273387-bb8b3b174118 -> main-n273419-523913c94371 Message-ID: <CAM5tNy5CkibyfG-Zybv5VWJtvPQ76pN%2B4vZt4756iD%2BNj41_ZQ@mail.gmail.com> In-Reply-To: <Zyd2t0243iYT_bbP@albert.catwhisker.org> References: <Zyd2t0243iYT_bbP@albert.catwhisker.org>
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On Sun, Nov 3, 2024 at 5:12=E2=80=AFAM David Wolfskill <david@catwhisker.or= g> wrote: > > Oddly, this is only on my "build machine" (which runs a GENERIC/amd64 > kernel) -- neither of the laptops whined at all. > > Copy/paste of the backtrace from serial console: > > ... > Starting mountd. > > > Fatal trap 12: page fault while in kernel mode > cpuid =3D 42; apic id =3D 2a > fault virtual address =3D 0x28 > fault code =3D supervisor read data, page not present > instruction pointer =3D 0x20:0xffffffff80c3a482 > stack pointer =3D 0x28:0xfffffe01b5f8ea00 > frame pointer =3D 0x28:0xfffffe01b5f8ea80 > 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 2241 (mountd) > rdi: fffff8207a989c00 rsi: 0000000000000002 rdx: fffff8207a086330 > rcx: 0000000000000000 r8: fffff8207906c740 r9: 0000000000020000 > rax: 0000000000000000 rbx: fffffe051ce25000 rbp: fffffe01b5f8ea80 > r10: 0000000000000000 r11: 0000000000000001 r12: fffffe01b5f8eb48 > r13: fffff820dd5a2e00 r14: fffff8207a989e00 r15: fffff8207a989e00 > trap number =3D 12 > panic: page fault > cpuid =3D 42 > time =3D 1730638810 > KDB: stack backtrace: > db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe01b5f= 8e6d0 > vpanic() at vpanic+0x136/frame 0xfffffe01b5f8e800 > panic() at panic+0x43/frame 0xfffffe01b5f8e860 > trap_fatal() at trap_fatal+0x40b/frame 0xfffffe01b5f8e8c0 > trap_pfault() at trap_pfault+0xa0/frame 0xfffffe01b5f8e930 > calltrap() at calltrap+0x8/frame 0xfffffe01b5f8e930 > --- trap 0xc, rip =3D 0xffffffff80c3a482, rsp =3D 0xfffffe01b5f8ea00, rbp= =3D 0xfffffe01b5f8ea80 --- > vfs_export() at vfs_export+0x7a2/frame 0xfffffe01b5f8ea80 > vfs_domount_update() at vfs_domount_update+0x7da/frame 0xfffffe01b5f8ec10 > vfs_domount() at vfs_domount+0x27f/frame 0xfffffe01b5f8ed40 > vfs_donmount() at vfs_donmount+0x904/frame 0xfffffe01b5f8edd0 > sys_nmount() at sys_nmount+0x60/frame 0xfffffe01b5f8ee00 > amd64_syscall() at amd64_syscall+0x158/frame 0xfffffe01b5f8ef30 > fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe01b5f8ef3= 0 > --- syscall (378, FreeBSD ELF64, nmount), rip =3D 0x27c44b7fe0aa, rsp =3D= 0x27c449448528, rbp =3D 0x27c449449090 --- > KDB: enter: panic > [ thread pid 2241 tid 102819 ] > Stopped at kdb_enter+0x33: movq $0,0x1056222(%rip) > db> This is the same issue as the one being discussed under the subject "Re: cfbe7a62dc62...". rick > > > One possibly-salient point about the build machine -- it's 32 cores; > 64 threads. Which is considerably more potential for multiprocessing > than the laptops. It's also an AMD (Epyc) CPU (vs. the Intel CPUs > in the laptops). > > The machine would normally be powered off for the rest of the day > after this reboot, so if there's something to be gained by poking > at it, I will happily accept clues & report results. > > For additional information (such as a copy of dmesg.boot from yesterday), > please see the "freebeast head" links at > https://www.catwhisker.org/~david/FreeBSD/history/ > > Thanks! > > Peace, > david > -- > David H. Wolfskill david@catwhisker.org > One can learn a lot about someone by noting what is considered "a joke." > > See https://www.catwhisker.org/~david/publickey.gpg for my public key.
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