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Heiko Carstens a2bfecc423 s390/cachinfo: add missing facility check to init_cache_level() ... commit 0b991f5cdc upstream. Stephen Powell reported the following crash on a z890 machine: Kernel BUG at 00000000001219d0 [verbose debug info unavailable] illegal operation: 0001 ilc:3 [#1] SMP Krnl PSW : 0704e00180000000 00000000001219d0 (init_cache_level+0x38/0xe0) R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:2 PM:0 EA:3 Krnl Code: 00000000001219c2: a7840056 brc 8,121a6e 00000000001219c6: a7190000 lghi %r1,0 #00000000001219ca: eb101000004c ecag %r1,%r0,0(%r1) >00000000001219d0: a7390000 lghi %r3,0 00000000001219d4: e310f0a00024 stg %r1,160(%r15) 00000000001219da: a7080000 lhi %r0,0 00000000001219de: a7b9f000 lghi %r11,-4096 00000000001219e2: c0a0002899d9 larl %r10,634d94 Call Trace: [<0000000000478ee2>] detect_cache_attributes+0x2a/0x2b8 [<000000000097c9b0>] cacheinfo_sysfs_init+0x60/0xc8 [<00000000001001c0>] do_one_initcall+0x98/0x1c8 [<000000000094fdc2>] kernel_init_freeable+0x212/0x2d8 [<000000000062352e>] kernel_init+0x26/0x118 [<000000000062fd2e>] kernel_thread_starter+0x6/0xc The illegal operation was executed because of a missing facility check, which should have made sure that the ECAG execution would only be executed on machines which have the general-instructions-extension facility installed. Reported-and-tested-by: Stephen Powell <zlinuxman@wowway.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		History 2015-08-10 12:21:52 -07:00
..
appldata	s390: appldata: drop owner assignment from platform_drivers	2014-10-20 16:20:13 +02:00
boot	s390: remove "64" suffix from a couple of files	2015-03-25 11:49:34 +01:00
configs	s390: update default configuration	2015-01-22 12:16:09 +01:00
crypto	Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2015-05-22 14:26:36 -07:00
hypfs	sysfs: Create mountpoints with sysfs_create_mount_point	2015-07-21 10:10:01 -07:00
include	s390/nmi: fix vector register corruption	2015-08-10 12:21:52 -07:00
kernel	s390/cachinfo: add missing facility check to init_cache_level()	2015-08-10 12:21:52 -07:00
kvm	KVM: s390: clear floating interrupt bitmap and parameters	2015-07-10 09:49:36 -07:00
lib	s390: remove "64" suffix from mem64.S and swsusp_asm64.S	2015-03-25 11:49:51 +01:00
mm	s390/mm: change swap pte encoding and pgtable cleanup	2015-04-23 16:56:20 +02:00
net	s390/bpf: clear correct BPF accumulator register	2015-08-10 12:21:52 -07:00
oprofile	s390: remove 31 bit support	2015-03-25 11:49:33 +01:00
pci	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux	2015-04-20 10:15:33 -07:00
defconfig	s390: update default configuration	2015-01-22 12:16:09 +01:00
Kbuild	s390: remove 31 bit support	2015-03-25 11:49:33 +01:00
Kconfig	s390/bpf: add dependency to z196 features	2015-04-23 16:55:50 +02:00
Kconfig.debug	Kconfig: consolidate CONFIG_DEBUG_STRICT_USER_COPY_CHECKS	2013-04-30 17:04:09 -07:00
Makefile	s390: remove 31 bit support	2015-03-25 11:49:33 +01:00