XPost: linux.debian.bugs.dist
From: carnil@debian.org
Control: tags -1 + moreinfo unreproducible
Hi Jörg,
On Wed, Nov 26, 2025 at 05:54:39PM +0100, Jörg Sommer wrote:
> Package: linux-kbuild-6.18
> Version: 6.18~rc7-1~exp1
> Severity: normal
> File: /usr/lib/linux-kbuild-6.18/tools/objtool/objtool
>
> Dear Maintainer,
>
> I'm trying to install the package *nvidia-kernel-dkms* (550.163.01-4) on my
> system which triggers dkms. This fails, because objtool crashes. Here is the
> core dump:
>
> PID: 219805 (objtool.real-x8)
> UID: 1000 (joerg)
> GID: 1000 (joerg)
> Signal: 11 (SEGV)
> Timestamp: Wed 2025-11-26 14:11:01 CET (3min 37s ago)
> Command Line: /usr/src/linux-headers-6.18-amd64/tools/objtool/objtool
--hacks=jump_label --hacks=noinstr --hacks=skylake --ibt --orc --retpoline
--rethunk --sls --static-call --uaccess --prefix=16 --link --module nvidia.o
> Executable: /usr/lib/linux-kbuild-6.18/tools/objtool/objtool.real-x86
> Control Group: /user.slice/user-1000.slice/user@1000.service/
pp.slice/app-gnome-xterm-31934.scope
> Unit: user@1000.service
> User Unit: app-gnome-xterm-31934.scope
> Slice: user-1000.slice
> Owner UID: 1000 (joerg)
> Boot ID: 31de29b563df4019b7e2ab8c62b9f795
> Machine ID: 523cb54753234ed08c13ec497d0d3b64
> Hostname: zenbook
> Storage: /var/lib/systemd/coredump/core.objtool\x2ereal
x8.1000.31de29b563df4019b7e2ab8c62b9f795.219805.1764162661000000.zst (present)
> Size on Disk: 110M
> Message: Process 219805 (objtool.real-x8) of user 1000 dumped core.
>
> [New LWP 219805]
> [Thread debugging using libthread_db enabled]
> Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
> Core was generated by `/usr/src/linux-headers-6.18-amd64/tools
objtool/objtool --hacks=jump_label --ha'.
> Program terminated with signal SIGSEGV, Segmentation fault.
> Download failed: Invalid argument. Continuing without source file
./tools/objtool/./tools/objtool/elf.c.
> #0 find_reloc_by_dest_range (elf=0x5b04b9247c70, sec=sec@entr
=0x5b04b924b820, offset=24, len=) at ./tools/objtool/elf.c:285
>
> warning: 285 ./tools/objtool/elf.c: No such file or directory
>
> Thread 1 (Thread 0x7941780f8f00 (LWP 219805)):
> #0 find_reloc_by_dest_range (elf=0x5b04b9247c70, sec=sec@entr
=0x5b04b924b820, offset=24, len=) at ./tools/objtool/elf.c:285
> reloc = 0xaaaaaaaaaaaaaaaa
> r = 0x7941727b3010
> rsec = 0x5b04b924b8e0
> o = 16
> #1 0x00005b04b2253187 in insn_reloc (file=, in
n=0x5b04b92bac40) at ./tools/objtool/check.c:1268
> reloc =
> #2 add_jump_destinations (file=) at ./tools/ob
tool/check.c:1503
> func = 0x79417366fcd0
> __sec = 0x5b04b924b820
> __fake =
> insn = 0x5b04b92bac40
> jump_dest =
> reloc =
> dest_sec =
> dest_off =
> ret =
> #3 decode_sections (file=file@entry=0x5b04b2279e80 ) at
./tools/objtool/check.c:2573
> ret =
> #4 0x00005b04b2254c70 in check (file=file@entry=0x5b04b2279e80 ) at
./tools/objtool/check.c:4773
> ret = 0
> warnings = 0
> #5 0x00005b04b225891a in objtool_run (argc=, a
gv=0x7fff8147cc08) at ./tools/objtool/builtin-check.c:328
> file = 0x5b04b2279e80
> ret = 0
> #6 0x000079417820dca8 in __libc_start_call_main (main=main@en
ry=0x5b04b22456f0 , argc=argc@entry=15, argv=argv@entry=0x7fff8147cc08)
at ../sysdeps/nptl/libc_start_call_main.h:58
> self =
> result =
> unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140735362354184,
2401228595235890281, 0, 140735362354312, 133322097692672, 100075726927544,
-2401014395131550615, -3184026318482856855}, mask_was_saved = 0}}, priv = {pad
= {0x0, 0x0, 0x7fff8147cc08,
0xf}, data = {prev = 0x0, cleanup = 0x0, canceltype = -2126001144}}}
> not_first_call =
> #7 0x000079417820dd65 in __libc_start_main_impl (main=0x5b04b22456f0
, argc=15, argv=0x7fff8147cc08, init=, fini=, rtld_fini=, stack_end=0x7fff8147cbf8) at ..
csu/libc-start.c:360
> No locals.
> #8 0x00005b04b2245761 in _start ()
> No symbol table info available.
> --- END ---
I cannot reproduce this issue right now. Are you by chance while
having the packages already updates running yet with the
6.18~rc6-1~exp1 kernel?
That one had the issue fixed with updating to 6.18~rc7, cf.
https://bugs.debian.org/1121013
Regards,
Salvatore
--- SoupGate-Win32 v1.05
* Origin: you cannot sedate... all the things you hate (1:229/2)
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