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s390: discard .interp section 

When debugging vmlinux with QEMU + GDB, the following GDB error may
occur:

    (gdb) c
    Continuing.
    Warning:
    Cannot insert breakpoint -1.
    Cannot access memory at address 0xffffffffffff95c0

    Command aborted.
    (gdb)

The reason is that, when .interp section is present, GDB tries to
locate the file specified in it in memory and put a number of
breakpoints there (see enable_break() function in gdb/solib-svr4.c).
Sometimes GDB finds a bogus location that matches its heuristics,
fails to set a breakpoint and stops. This makes further debugging
impossible.

The .interp section contains misleading information anyway (vmlinux
does not need ld.so), so fix by discarding it.

Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
This commit is contained in:
Ilya Leoshkevich 2023-01-23 22:50:32 +01:00 committed by Heiko Carstens
parent 0d5f0dc830
commit e9c9cb90e7
1 changed files with 1 additions and 0 deletions
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arch/s390/kernel/vmlinux.lds.S
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@ -231,5 +231,6 @@ SECTIONS
DISCARDS
/DISCARD/ : {
*(.eh_frame)
*(.interp)
}
}