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From:   Jeffrin Thalakkottoor <jeffrin@rajagiritech.edu.in>
Date:   Tue, 25 Jan 2022 22:32:26 +0530
Message-ID: <CAG=yYw=BK1gU0UV8g5_ZT5gOe5P2W2rKHWdFyPi4ZHSy4CGMFw@mail.gmail.com>
Subject: Re: review for 5.16.3-rc2
To:     Greg KH <gregkh@linuxfoundation.org>
Cc:     lkml <linux-kernel@vger.kernel.org>,
        "stable@vger.kernel.org" <stable@vger.kernel.org>
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On Tue, Jan 25, 2022 at 9:57 PM Greg KH <gregkh@linuxfoundation.org> wrote:
>
> On Tue, Jan 25, 2022 at 09:49:00PM +0530, Jeffrin Thalakkottoor wrote:
> > On Tue, Jan 25, 2022 at 8:04 PM Greg KH <gregkh@linuxfoundation.org> wrote:
> > >
> > > On Tue, Jan 25, 2022 at 06:15:46PM +0530, Jeffrin Jose T wrote:
> > > > hello greg,
> > > >
> > > > compile failed for  5.16.3-rc2 related.
> > > > a relevent file attached.
> > > >
> > > > Tested-by : Jeffrin Jose T <jeffrin@rajagiritech.edu.in>
> > >
> > > But it failed for you, how did you test it?
> >
> > i compiled  5.16.3-rc2  related to "make localmodconfig" and  "make  -j4"
>
> So it somehow failed?

Yes i think so

>
> > >
> > > >
> > > >
> > >
> > > >       char *                     typetab;              /*    24     8 */
> > > >
> > > >       /* size: 32, cachelines: 1, members: 4 */
> > > >       /* sum members: 28, holes: 1, sum holes: 4 */
> > > >       /* last cacheline: 32 bytes */
> > > > };
> > > > struct klp_modinfo {
> > > >       Elf64_Ehdr                 hdr;                  /*     0    64 */
> > > >       /* --- cacheline 1 boundary (64 bytes) --- */
> > > >       Elf64_Shdr *               sechdrs;              /*    64     8 */
> > > >       char *                     secstrings;           /*    72     8 */
> > > >       unsigned int               symndx;               /*    80     4 */
> > > >
> > > >       /* size: 88, cachelines: 2, members: 4 */
> > > >       /* padding: 4 */
> > > >       /* last cacheline: 24 bytes */
> > > > };
> > > > Segmentation fault
> > >
> > > What "faulted"?  Look higher up in the log please.
> >
> > a top view...
> >
> >   CALL    scripts/atomic/check-atomics.sh
> >   CALL    scripts/checksyscalls.sh
> >   CHK     include/generated/compile.h
> >   GEN     .version
> >   CHK     include/generated/compile.h
> >   UPD     include/generated/compile.h
> >   CC      init/version.o
> >   AR      init/built-in.a
> >   LD      vmlinux.o
> >   MODPOST vmlinux.symvers
> >   MODINFO modules.builtin.modinfo
> >   GEN     modules.builtin
> >   LD      .tmp_vmlinux.btf
> >   BTF     .btf.vmlinux.bin.o
> > struct list_head {
> >     struct list_head *         next;                 /*     0     8 */
> >     struct list_head *         prev;                 /*     8     8 */
> >
> >     /* size: 16, cachelines: 1, members: 2 */
> >     /* last cacheline: 16 bytes */
> > };
> > struct hlist_head {
> >     struct hlist_node *        first;                /*     0     8 */
> >
> >     /* size: 8, cachelines: 1, members: 1 */
> >     /* last cacheline: 8 bytes */
> > };
> > struct hlist_node {
> >     struct hlist_node *        next;                 /*     0     8 */
> >     struct hlist_node * *      pprev;                /*     8     8 */
> >
> >     /* size: 16, cachelines: 1, members: 2 */
> >     /* last cacheline: 16 bytes */
> > };
> > struct callback_head {
> >     struct callback_head *     next;                 /*     0     8 */
> >     void                       (*func)(struct callback_head *); /*
> > 8     8 */
> > .
> > .
> > .
> > .
> > .
> > .
>
> I do not know what is failing, there is no error message here.  Does
> 5.16.2 build properly for you?

stderr has  captured  the  following...


-------------x-----------------x--------------x---
FAILED: load BTF from vmlinux: No such file or directory
make: *** [Makefile:1161: vmlinux] Error 255
make: *** Deleting file 'vmlinux'
------------x----------------x------------x--
5.16.2-rc1 builds for me.

Will the following link help...

https://unix.stackexchange.com/questions/616392/failed-load-btf-from-vmlinux-unknown-error-2make-makefile1162-vmlinu

-- 
software engineer
rajagiri school of engineering and technology