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    SubjectRe: [PATCH v11 09/14] module: Move kallsyms support into a separate file
    On Thu, 10 Mar 2022 10:24:08 +0000
    Aaron Tomlin <atomlin@redhat.com> wrote:

    > No functional change.
    >

    And this too has a functional change as well.

    Reported-by: Chuck Lever III <chuck.lever@oracle.com>
    Link: https://lore.kernel.org/all/355D2478-33D3-4046-8422-E512F42C51BC@oracle.com/


    Before this patch:

    # grep -a '^[0-9a-f]* [^a-zA-Z]' /proc/kallsyms

    Nothing.

    After this patch:

    # grep -a '^[0-9a-f]* [^a-zA-Z]' /proc/kallsyms
    ffffffffc09df024 ^@ _note_9 [ebtables]
    ffffffffc09df03c ^@ _note_8 [ebtables]
    ffffffffc0e25024 ^@ _note_9 [bridge]
    ffffffffc0e2503c ^@ _note_8 [bridge]
    ffffffffc0e01000 ^@ br_switchdev_event [bridge]
    ffffffffc0e39548 ^@ __warned.10 [bridge]
    ffffffffc09bd024 ^@ _note_9 [stp]
    ffffffffc09bd03c ^@ _note_8 [stp]
    ffffffffc0849024 ^@ _note_9 [vmw_vmci]
    ffffffffc084903c ^@ _note_8 [vmw_vmci]
    ffffffffc0849454 ^@ __kstrtab_vmci_context_get_priv_flags [vmw_vmci]
    ffffffffc0849470 ^@ __kstrtabns_vmci_context_get_priv_flags [vmw_vmci]
    ffffffffc0849054 ^@ __ksymtab_vmci_context_get_priv_flags [vmw_vmci]
    ffffffffc081d024 ^@ _note_9 [nf_reject_ipv6]
    ffffffffc081d03c ^@ _note_8 [nf_reject_ipv6]
    ffffffffc081d0a8 ^@ __kstrtab_nf_reject_skb_v6_tcp_reset [nf_reject_ipv6]
    ffffffffc081d0c3 ^@ __kstrtabns_nf_reject_skb_v6_tcp_reset [nf_reject_ipv6]
    ffffffffc081d078 ^@ __ksymtab_nf_reject_skb_v6_tcp_reset [nf_reject_ipv6]
    ffffffffc081d0c4 ^@ __kstrtab_nf_reject_skb_v6_unreach [nf_reject_ipv6]

    The kallsyms get corrupted output, and this breaks trace-cmd.

    -- Steve


    > This patch migrates kallsyms code out of core module
    > code kernel/module/kallsyms.c
    >
    > Signed-off-by: Aaron Tomlin <atomlin@redhat.com>
    > ---
    > kernel/module/Makefile | 1 +
    > kernel/module/internal.h | 29 +++
    > kernel/module/kallsyms.c | 502 ++++++++++++++++++++++++++++++++++++
    > kernel/module/main.c | 531 +--------------------------------------
    > 4 files changed, 538 insertions(+), 525 deletions(-)
    > create mode 100644 kernel/module/kallsyms.c
    >

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