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| author |   Gerald Schaefer <gerald.schaefer@de.ibm.com> | 2020-05-06 13:45:52 +0200 |
|---|---|---|
| committer |   Vasily Gorbik <gor@linux.ibm.com> | 2020-05-20 10:13:27 +0200 |
| commit | 4c1cbcbd6c56c79de2c07159be4f55386bb0bef2 (patch) | |
| tree | 10a9330ab04f8e478652931c8ccd6526023cb140 /Kconfig | |
| parent | s390/mm: fix set_huge_pte_at() for empty ptes (diff) | |
| download | linux-dev-4c1cbcbd6c56c79de2c07159be4f55386bb0bef2.tar.xz linux-dev-4c1cbcbd6c56c79de2c07159be4f55386bb0bef2.zip | |
s390/kaslr: add support for R_390_JMP_SLOT relocation type
With certain kernel configurations, the R_390_JMP_SLOT relocation type
might be generated, which is not expected by the KASLR relocation code,
and the kernel stops with the message "Unknown relocation type".
This was found with a zfcpdump kernel config, where CONFIG_MODULES=n
and CONFIG_VFIO=n. In that case, symbol_get() is used on undefined
__weak symbols in virt/kvm/vfio.c, which results in the generation
of R_390_JMP_SLOT relocation types.
Fix this by handling R_390_JMP_SLOT similar to R_390_GLOB_DAT.
Fixes: 805bc0bc238f ("s390/kernel: build a relocatable kernel")
Cc: <stable@vger.kernel.org> # v5.2+
Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Reviewed-by: Philipp Rudo <prudo@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'Kconfig')
0 files changed, 0 insertions, 0 deletions