David Gibson 5b73d6347e KVM: PPC: Book3S HV: Prevent double-free on HPT resize commit path ... resize_hpt_release(), called once the HPT resize of a KVM guest is completed (successfully or unsuccessfully) frees the state structure for the resize. It is currently not safe to call with a NULL pointer. However, one of the error paths in kvm_vm_ioctl_resize_hpt_commit() can invoke it with a NULL pointer. This will occur if userspace improperly invokes KVM_PPC_RESIZE_HPT_COMMIT without previously calling KVM_PPC_RESIZE_HPT_PREPARE, or if it calls COMMIT twice without an intervening PREPARE. To fix this potential crash bug - and maybe others like it, make it safe (and a no-op) to call resize_hpt_release() with a NULL resize pointer. Found by Dan Carpenter with a static checker. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@ozlabs.org>		2017-02-16 16:32:19 +11:00
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book3s_32_mmu_host.c	powerpc/mm: Move hash related mmu-*.h headers to book3s/	2016-03-03 21:19:21 +11:00
book3s_32_mmu.c	arch: powerpc: kvm: book3s_32_mmu.c: Remove unused function	2014-12-17 13:12:25 +01:00
book3s_32_sr.S	KVM: PPC: book3s_pr: Simplify transitions between virtual and real mode	2011-09-25 19:52:29 +03:00
book3s_64_mmu_host.c	powerpc/mm: Move hash table ops to a separate structure	2016-07-21 18:59:09 +10:00
book3s_64_mmu_hv.c	KVM: PPC: Book3S HV: Prevent double-free on HPT resize commit path	2017-02-16 16:32:19 +11:00
book3s_64_mmu_radix.c	KVM: PPC: Book3S HV: Enable radix guest support	2017-01-31 19:11:52 +11:00
book3s_64_mmu.c	powerpc/mm: Move hash related mmu-*.h headers to book3s/	2016-03-03 21:19:21 +11:00
book3s_64_slb.S	KVM: PPC: Book3S PR: Rework SLB switching code	2014-05-30 14:26:30 +02:00
book3s_64_vio_hv.c	KVM: PPC: Book3S: Move prototypes for KVM functions into kvm_ppc.h	2016-12-01 14:03:46 +11:00
book3s_64_vio.c	KVM: PPC: Book 3S: Fix error return in kvm_vm_ioctl_create_spapr_tce()	2017-02-09 22:06:28 +11:00
book3s_emulate.c	KVM: PPC: Book3s PR: Allow access to unprivileged MMCR2 register	2016-09-27 15:14:29 +10:00
book3s_exports.c	KVM: PPC: Make shared struct aka magic page guest endian	2014-05-30 14:26:21 +02:00
book3s_hv_builtin.c	Merge remote-tracking branch 'remotes/powerpc/topic/ppc-kvm' into kvm-ppc-next	2017-02-08 19:35:34 +11:00
book3s_hv_hmi.c	powerpc: move hmi.c to arch/powerpc/kvm/	2016-09-09 16:18:07 +10:00
book3s_hv_interrupts.S	powerpc/kvm: Create proper names for the kvm_host_state PMU fields	2014-12-29 15:45:55 +11:00
book3s_hv_ras.c	KVM: PPC: Book3S: Move prototypes for KVM functions into kvm_ppc.h	2016-12-01 14:03:46 +11:00
book3s_hv_rm_mmu.c	KVM: PPC: Book3S HV: Don't store values derivable from HPT order	2017-01-31 21:59:34 +11:00
book3s_hv_rm_xics.c	Merge remote-tracking branch 'remotes/powerpc/topic/ppc-kvm' into kvm-ppc-next	2017-02-08 19:35:34 +11:00
book3s_hv_rmhandlers.S	KVM: PPC: Book3S HV: Invalidate ERAT on guest entry/exit for POWER9 DD1	2017-01-31 19:11:52 +11:00
book3s_hv.c	KVM: PPC: Book3S HV: Outline of KVM-HV HPT resizing implementation	2017-01-31 21:59:56 +11:00
book3s_interrupts.S	powerpc: Define and use PPC64_ELF_ABI_v2/v1	2016-06-14 13:58:27 +10:00
book3s_mmu_hpte.c	kvm: powerpc: book3s: pr: move PR related tracepoints to a separate header	2013-10-17 15:36:22 +02:00
book3s_paired_singles.c	powerpc: Create disable_kernel_{fp,altivec,vsx,spe}()	2015-12-01 13:52:25 +11:00
book3s_pr_papr.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
book3s_pr.c	KVM: PPC: Book3S PR: Refactor program interrupt related code into separate function	2017-01-27 20:34:28 +11:00
book3s_rmhandlers.S	powerpc: Define and use PPC64_ELF_ABI_v2/v1	2016-06-14 13:58:27 +10:00
book3s_rtas.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
book3s_segment.S	KVM: PPC: Book3S: 64-bit CONFIG_RELOCATABLE support for interrupts	2017-01-31 19:07:39 +11:00
book3s_xics.c	KVM: PPC: Book 3S: XICS: Don't lock twice when checking for resend	2017-01-27 10:27:21 +11:00
book3s_xics.h	KVM: PPC: Book 3S: XICS: Implement ICS P/Q states	2017-01-27 10:27:02 +11:00
book3s.c	KVM: PPC: Book3S HV: Page table construction and page faults for radix guests	2017-01-31 19:11:49 +11:00
book3s.h	kvm: Fix page ageing bugs	2014-09-24 14:07:58 +02:00
booke_emulate.c	KVM: PPC: BOOKE: Emulate debug registers and exception	2014-09-22 10:11:33 +02:00
booke_interrupts.S	KVM: PPC: Remove 440 support	2014-07-28 15:23:15 +02:00
booke.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
booke.h	KVM: PPC: Book3e: Add AltiVec support	2014-09-22 10:11:32 +02:00
bookehv_interrupts.S	powerpc/kvm: common sw breakpoint instr across ppc	2014-09-22 10:11:36 +02:00
e500_emulate.c	KVM: PPC: e500: Emulate TMCFG0 TMRN register	2015-10-15 15:58:16 +11:00
e500_mmu_host.c	kvm: rename pfn_t to kvm_pfn_t	2016-01-15 17:56:32 -08:00
e500_mmu_host.h	KVM: PPC: E500: Make clear_tlb_refs and clear_tlb1_bitmap static	2013-01-24 19:23:33 +01:00
e500_mmu.c	KVM: PPC: e500: Rename jump labels in kvmppc_e500_tlb_init()	2016-09-13 14:32:47 +10:00
e500.c	KVM: PPC: e500: fix handling local_sid_lookup result	2015-10-15 15:58:16 +11:00
e500.h	kvm: rename pfn_t to kvm_pfn_t	2016-01-15 17:56:32 -08:00
e500mc.c	powerpc: Fix misspellings in comments.	2016-03-01 19:27:20 +11:00
emulate_loadstore.c	KVM: PPC: Pass enum to kvmppc_get_last_inst	2014-09-22 10:11:36 +02:00
emulate.c	KVM: PPC: Book3S PR: Fix illegal opcode emulation	2016-06-20 14:11:25 +10:00
fpu.S	powerpc: Remove fpscr use from [kvm_]cvt_{fd,df}	2010-09-02 14:07:32 +10:00
irq.h	KVM: PPC: Book3S: Add API for in-kernel XICS emulation	2013-05-02 15:28:36 +02:00
Kconfig	KVM: PPC: select IRQ_BYPASS_MANAGER	2016-09-09 16:26:19 +10:00
Makefile	KVM: PPC: Book3S HV: Add basic infrastructure for radix guests	2017-01-31 19:11:48 +11:00
mpic.c	Replace <asm/uaccess.h> with <linux/uaccess.h> globally	2016-12-24 11:46:01 -08:00
powerpc.c	KVM: PPC: Book3S HV: Advertise availablity of HPT resizing on KVM HV	2017-01-31 22:00:07 +11:00
timing.c	KVM: PPC: Remove DCR handling	2014-07-28 19:29:15 +02:00
timing.h	KVM: PPC: Remove DCR handling	2014-07-28 19:29:15 +02:00
trace_book3s.h	KVM: PPC: Book3S HV: Tracepoints for KVM HV guest interactions	2014-12-17 13:29:27 +01:00
trace_booke.h	KVM: PPC: BookE: Improve irq inject tracepoint	2014-12-15 13:27:23 +01:00
trace_hv.h	KVM: PPC: Book3S HV: Comment style and print format fixups	2016-11-28 11:48:47 +11:00
trace_pr.h	kvm: rename pfn_t to kvm_pfn_t	2016-01-15 17:56:32 -08:00
trace.h	kvm: powerpc: booke: Move booke related tracepoints to separate header	2013-10-17 15:37:16 +02:00