gcc version 9.3.0 (GCC)
QEMU emulator version 5.1.0
Running with fs=rofs I get the error:
Traceback (most recent call last):
File "/home/matthew/osv/scripts/gen-rofs-img.py", line 369, in <module>
main()
File "/home/matthew/osv/scripts/gen-rofs-img.py", line 366, in main
gen_image(outfile, manifest)
File "/home/matthew/osv/scripts/gen-rofs-img.py", line 269, in gen_image
system_structure_block, bytes_written = write_fs(fp, manifest)
File "/home/matthew/osv/scripts/gen-rofs-img.py", line 246, in write_fs
count, directory_entries_index = write_dir(fp, manifest.get(''), '',
manifest)
File "/home/matthew/osv/scripts/gen-rofs-img.py", line 207, in write_dir
count, directory_entries_index = write_dir(fp, val, dirpath + '/' +
entry, manifest)
File "/home/matthew/osv/scripts/gen-rofs-img.py", line 207, in write_dir
count, directory_entries_index = write_dir(fp, val, dirpath + '/' +
entry, manifest)
File "/home/matthew/osv/scripts/gen-rofs-img.py", line 222, in write_dir
inode.count = write_file(fp, val)
File "/home/matthew/osv/scripts/gen-rofs-img.py", line 164, in write_file
with open(path, 'rb') as f:
FileNotFoundError: [Errno 2] No such file or directory: 'libz.so.1'
I think that's from this line in usr.manifest?
/usr/lib/libz.so.1: libz.so.1
Don't have zlib in the manifest without fs=rofs, and I think zpool uses it?
Looking into it...
On Saturday, December 5, 2020 at 4:36:20 PM UTC-7 [email protected] wrote:
> I can not reproduce it on Ubuntu 20.20 neither Fedora 33. Here is the code
> fragment where it happens:
>
> 169 bool object::arch_relocate_jump_slot(symbol_module& sym, void *addr,
> Elf64_Sxword addend)
>
> 170 {
>
> 171 if (sym.symbol) {
>
> 172 *static_cast<void**>(addr) = sym.relocated_addr();
>
> 173 return true;
>
> 174 } else {
>
> 175 return false;
>
> 176 }
>
> 177 }
> It looks like writing at the addr 0x100000040ca8 in line 172 caused the
> fault. Why?
>
> And then the 2nd page fault in the gdb backtrace as the 1st one was being
> handled (not sure if that is a bug or just a state of loading of a program).
>
> 981 if (dynamic_exists(DT_HASH)) {
>
> 982 auto hashtab = dynamic_ptr<Elf64_Word>(DT_HASH);
>
> 983 return hashtab[1];
>
> 984 }
> Is something wrong with the elf files cpiod.so, mkfs.so or zfs.so or
> something?
>
> Can you try to do the same with ROFS?
>
> fs=rofs
> 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.
>>>>
>>>
--
You received this message because you are subscribed to the Google Groups "OSv
Development" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To view this discussion on the web visit
https://groups.google.com/d/msgid/osv-dev/20d4dc1c-85b5-4245-a70d-1844e9b8ddaen%40googlegroups.com.
