Which version of GCC and QEMU/KV< are you using?
On Saturday, December 5, 2020 at 5:44:12 PM UTC-5 Matthew Kenigsberg wrote:
> Struggling to get scripts/build to run on NixOS because I'm getting a page
> fault. NixOS does keep shared libraries in nonstandard locations, not sure
> if that's breaking something. More details below, but any ideas?
>
> As far as I can tell, the error is caused by tools/mkfs/mkfs.cc:71:
> run_cmd("/zpool.so", zpool_args);
>
> The error from scripts/build:
>
> OSv v0.55.0-145-g97f17a7a
> eth0: 192.168.122.15
> Booted up in 154.38 ms
> Cmdline: /tools/mkfs.so; /tools/cpiod.so --prefix /zfs/zfs/; /zfs.so set
> compression=off osv
> Running mkfs...
> page fault outside application, addr: 0x0000100000040ca8
> [registers]
> RIP: 0x000000004039c25a
> <elf::object::arch_relocate_jump_slot(elf::symbol_module&, void*, long)+26>
> RFL: 0x0000000000010202 CS: 0x0000000000000008 SS: 0x0000000000000010
> RAX: 0x000010000007a340 RBX: 0x0000100000040ca8 RCX: 0x000010000006abb0
> RDX: 0x0000000000000002
> RSI: 0x00002000001f6f70 RDI: 0xffffa00001058c00 RBP: 0x00002000001f6f30
> R8: 0xffffa00000a68460
> R9: 0xffffa00000f18da0 R10: 0x0000000000000000 R11: 0x00000000409dd380
> R12: 0xffffa00000f18c00
> R13: 0xffffa00000f18da0 R14: 0x0000000000000000 R15: 0x00000000409dd380
> RSP: 0x00002000001f6f20
> Aborted
>
> [backtrace]
> 0x00000000403458d3 <???+1077172435>
> 0x00000000403477ce <mmu::vm_fault(unsigned long, exception_frame*)+350>
> 0x0000000040398ba2 <page_fault+162>
> 0x0000000040397a16 <???+1077508630>
> 0x0000000040360a13 <elf::object::resolve_pltgot(unsigned int)+387>
> 0x0000000040360c38 <elf_resolve_pltgot+56>
> 0x000000004039764f <???+1077507663>
> 0xffffa000012b880f <???+19630095>
>
> Trying to get a backtrace after connecting with gdb:
> (gdb) bt
> #0 abort (fmt=fmt@entry=0x40644b90 "Assertion failed: %s (%s: %s: %d)\n")
> at runtime.cc:105
> #1 0x000000004023c6fb in __assert_fail (expr=expr@entry=0x40672cf8
> "ef->rflags & processor::rflags_if",
> file=file@entry=0x40672d25 "arch/x64/mmu.cc", line=line@entry=38,
> func=func@entry=0x40672d1a "page_fault")
> at runtime.cc:139
> #2 0x0000000040398c05 in page_fault (ef=0xffff800000015048) at
> arch/x64/arch-cpu.hh:107
> #3 <signal handler called>
> #4 0x000000004035c879 in elf::object::symtab_len
> (this=0xffffa00000f18c00) at core/elf.cc:983
> #5 0x000000004035c938 in elf::object::lookup_addr
> (this=0xffffa00000f18c00, addr=addr@entry=0x1000000254ce)
> at core/elf.cc:1015
> #6 0x000000004035cb07 in elf::program::<lambda(const
> elf::program::modules_list&)>::operator() (
> __closure=<synthetic pointer>, __closure=<synthetic pointer>, ml=...)
> at core/elf.cc:1620
> #7 elf::program::with_modules<elf::program::lookup_addr(void
> const*)::<lambda(const elf::program::modules_list&)> >
> (f=..., this=0xffffa00000097e70) at include/osv/elf.hh:702
> #8 elf::program::lookup_addr (this=0xffffa00000097e70,
> addr=addr@entry=0x1000000254ce) at core/elf.cc:1617
> #9 0x00000000404357cc in osv::lookup_name_demangled
> (addr=addr@entry=0x1000000254ce,
> buf=buf@entry=0xffff8000012146d0 "???+19630095", len=len@entry=1024)
> at core/demangle.cc:47
> #10 0x000000004023c4e0 in print_backtrace () at runtime.cc:85
> #11 0x000000004023c6b4 in abort (fmt=fmt@entry=0x40644a9f "Aborted\n") at
> runtime.cc:121
> #12 0x0000000040202989 in abort () at runtime.cc:98
> #13 0x00000000403458d4 in mmu::vm_sigsegv (ef=0xffff800001215068,
> addr=<optimized out>) at core/mmu.cc:1314
> #14 mmu::vm_sigsegv (addr=<optimized out>, ef=0xffff800001215068) at
> core/mmu.cc:1308
> #15 0x00000000403477cf in mmu::vm_fault (addr=addr@entry=17592186309800,
> ef=ef@entry=0xffff800001215068)
> at core/mmu.cc:1328
> #16 0x0000000040398ba3 in page_fault (ef=0xffff800001215068) at
> arch/x64/mmu.cc:42
> #17 <signal handler called>
> #18 0x000000004039c25a in elf::object::arch_relocate_jump_slot
> (this=this@entry=0xffffa00000f18c00, sym=...,
> addr=addr@entry=0x100000040ca8, addend=addend@entry=0) at
> arch/x64/arch-elf.cc:172
> #19 0x0000000040360a14 in elf::object::resolve_pltgot
> (this=0xffffa00000f18c00, index=<optimized out>)
> at core/elf.cc:843
> #20 0x0000000040360c39 in elf_resolve_pltgot (index=308,
> obj=0xffffa00000f18c00) at core/elf.cc:1860
> #21 0x0000000040397650 in __elf_resolve_pltgot () at arch/x64/elf-dl.S:47
> #22 0x00001000000254cf in ?? ()
> #23 0xffffa000012b8800 in ?? ()
> #24 0x00002000001f74a0 in ?? ()
> #25 0x00001000000254cf in ?? ()
> #26 0x00002000001f7480 in ?? ()
> #27 0x00000000403f241c in calloc (nmemb=<optimized out>, size=<optimized
> out>) at core/mempool.cc:1811
> #28 0xffff900000a98000 in ?? ()
> #29 0x0000000000000000 in ?? ()
> On Saturday, November 28, 2020 at 1:39:46 PM UTC-7 Matthew Kenigsberg
> wrote:
>
>> Hi,
>>
>> I'll send something, might take a bit before I find time to work on it
>> though.
>>
>> Thanks,
>> Matthew
>>
>> On Saturday, November 28, 2020 at 1:11:11 PM UTC-7 Roman Shaposhnik wrote:
>>
>>> On Tue, Nov 24, 2020 at 8:03 AM Waldek Kozaczuk <[email protected]>
>>> wrote:
>>> >
>>> > Hey,
>>> >
>>> > Send a patch with a new app that could demonstrate it, please, if you
>>> can. I would like to see it. Sounds like a nice improvement.
>>>
>>> FWIW: I'd love to see it too -- been meaning to play with Nix and this
>>> gives me a perfect excuse ;-)
>>>
>>> Thanks,
>>> Roman.
>>>
>>
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