Ravi Bangoria 4917fcb58c powerpc/sysrq: Fix oops whem ppmu is not registered ... Kernel crashes if power pmu is not registered and user tries to dump regs with 'echo p > /proc/sysrq-trigger'. Sample log: Unable to handle kernel paging request for data at address 0x00000008 Faulting instruction address: 0xc0000000000d52f0 NIP [c0000000000d52f0] perf_event_print_debug+0x10/0x230 LR [c00000000058a938] sysrq_handle_showregs+0x38/0x50 Call Trace: printk+0x38/0x4c (unreliable) __handle_sysrq+0xe4/0x270 write_sysrq_trigger+0x64/0x80 proc_reg_write+0x80/0xd0 __vfs_write+0x40/0x200 vfs_write+0xc8/0x240 SyS_write+0x60/0x110 system_call+0x58/0x6c Fixes: 5f6d0380c6 ("powerpc/perf: Define perf_event_print_debug() to print PMU register values") Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com> Reviewed-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>		2017-09-20 13:30:09 +10:00
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boot	powerpc: conditionally compile platform-specific serial drivers	2017-08-31 14:26:48 +10:00
configs	powerpc/configs: Update for CONFIG_SND changes	2017-09-20 13:30:09 +10:00
crypto	Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6	2017-05-02 15:53:46 -07:00
include	Merge branch 'akpm' (patches from Andrew)	2017-09-09 10:30:07 -07:00
kernel	powerpc fixes for 4.14 #2	2017-09-15 12:44:59 -07:00
kvm	kvm,powerpc: Serialize wq active checks in ops->vcpu_kick	2017-09-15 16:57:13 +02:00
lib	powerpc: Fix kernel crash in emulation of vector loads and stores	2017-09-04 19:38:07 +10:00
math-emu	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
mm	powerpc/mm: Use seq_putc() in two functions	2017-09-01 16:42:52 +10:00
net	powerpc updates for 4.14	2017-09-07 10:15:40 -07:00
oprofile	ktime: Cleanup ktime_set() usage	2016-12-25 17:21:22 +01:00
perf	powerpc/sysrq: Fix oops whem ppmu is not registered	2017-09-20 13:30:09 +10:00
platforms	mm: treewide: remove GFP_TEMPORARY allocation flag	2017-09-13 18:53:16 -07:00
purgatory	powerpc/asm: Convert .llong directives to .8byte	2017-08-31 14:26:47 +10:00
sysdev	treewide: make "nr_cpu_ids" unsigned	2017-09-08 18:26:48 -07:00
tools	powerpc/64: Tool to check head sections location sanity	2017-05-30 14:59:51 +10:00
xmon	powerpc/xmon: Add ISA v3.0 SPRs to SPR dump	2017-08-31 14:26:45 +10:00
Kconfig	powerpc updates for 4.14	2017-09-07 10:15:40 -07:00
Kconfig.debug	powerpc/xmon: Enable disassembly files (compilation changes)	2017-02-15 20:02:42 +11:00
Makefile	Merge branch 'fixes' into next	2017-08-23 22:20:10 +10:00
Makefile.postlink	powerpc/64: Tool to check head sections location sanity	2017-05-30 14:59:51 +10:00