Alexander GordeevandGreg Kroah-Hartman ec75af7e81 s390/early: fix sclp_early_sccb variable lifetime ...

[ Upstream commit 639886b71d ]

Commit ada1da31ce ("s390/sclp: sort out physical vs
virtual pointers usage") fixed the notion of virtual
address for sclp_early_sccb pointer. However, it did
not take into account that kasan_early_init() can also
output messages and sclp_early_sccb should be adjusted
by the time kasan_early_init() is called.

Currently it is not a problem, since virtual and physical
addresses on s390 are the same. Nevertheless, should they
ever differ, this would cause an invalid pointer access.

Fixes: ada1da31ce ("s390/sclp: sort out physical vs virtual pointers usage")
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2023-03-10 09:32:53 +01:00

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con3215.c

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con3270.c

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ctrlchar.c

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ctrlchar.h

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defkeymap.c

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defkeymap.map

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diag_ftp.c

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diag_ftp.h

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fs3270.c

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hmcdrv_cache.c

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hmcdrv_cache.h

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hmcdrv_dev.c

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hmcdrv_dev.h

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hmcdrv_ftp.c

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hmcdrv_ftp.h

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hmcdrv_mod.c

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Kconfig

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keyboard.c

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keyboard.h

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Makefile

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monreader.c

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monwriter.c

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raw3270.c

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raw3270.h

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sclp_ap.c

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sclp_cmd.c

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sclp_con.c

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sclp_config.c

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sclp_cpi_sys.c

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sclp_cpi_sys.h

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sclp_ctl.c

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sclp_diag.h

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sclp_early_core.c

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sclp_early.c

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sclp_ftp.c

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sclp_ftp.h

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sclp_ocf.c

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sclp_pci.c

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sclp_quiesce.c

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sclp_rw.c

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sclp_rw.h

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sclp_sd.c

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sclp_sdias.c

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sclp_sdias.h

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sclp_tty.c

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sclp_tty.h

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sclp_vt220.c

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sclp.c

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sclp.h

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tape_34xx.c

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tape_3590.c

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tape_3590.h

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tape_char.c

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tape_class.c

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tape_class.h

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tape_core.c

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tape_proc.c

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tape_std.c

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tape_std.h

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tape.h

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tty3270.c

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tty3270.h

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uvdevice.c

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vmcp.c

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vmlogrdr.c

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vmur.c

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vmur.h

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zcore.c

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