Sean Christopherson f5d16bb9be KVM: x86/mmu: Don't attempt to map leaf if target TDP MMU SPTE is frozen ... Hoist the is_removed_spte() check above the "level == goal_level" check when walking SPTEs during a TDP MMU page fault to avoid attempting to map a leaf entry if said entry is frozen by a different task/vCPU. ------------[ cut here ]------------ WARNING: CPU: 3 PID: 939 at arch/x86/kvm/mmu/tdp_mmu.c:653 kvm_tdp_mmu_map+0x269/0x4b0 Modules linked in: kvm_intel CPU: 3 PID: 939 Comm: nx_huge_pages_t Not tainted 6.1.0-rc4+ #67 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 0.0.0 02/06/2015 RIP: 0010:kvm_tdp_mmu_map+0x269/0x4b0 RSP: 0018:ffffc9000068fba8 EFLAGS: 00010246 RAX: 00000000000005a0 RBX: ffffc9000068fcc0 RCX: 0000000000000005 RDX: ffff88810741f000 RSI: ffff888107f04600 RDI: ffffc900006a3000 RBP: 060000010b000bf3 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 000ffffffffff000 R12: 0000000000000005 R13: ffff888113670000 R14: ffff888107464958 R15: 0000000000000000 FS: 00007f01c942c740(0000) GS:ffff888277cc0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000117013006 CR4: 0000000000172ea0 Call Trace: <TASK> kvm_tdp_page_fault+0x10c/0x130 kvm_mmu_page_fault+0x103/0x680 vmx_handle_exit+0x132/0x5a0 [kvm_intel] vcpu_enter_guest+0x60c/0x16f0 kvm_arch_vcpu_ioctl_run+0x1e2/0x9d0 kvm_vcpu_ioctl+0x271/0x660 __x64_sys_ioctl+0x80/0xb0 do_syscall_64+0x2b/0x50 entry_SYSCALL_64_after_hwframe+0x46/0xb0 </TASK> ---[ end trace 0000000000000000 ]--- Fixes: 63d28a25e0 ("KVM: x86/mmu: simplify kvm_tdp_mmu_map flow when guest has to retry") Cc: Robert Hoo <robert.hu@linux.intel.com> Signed-off-by: Sean Christopherson <seanjc@google.com> Reviewed-by: Robert Hoo <robert.hu@linux.intel.com> Message-Id: <20221213033030.83345-2-seanjc@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>		2022-12-23 12:33:52 -05:00
..
alpha	asm-generic: arch/alpha regression fix for 6.1	2022-10-14 13:47:42 -07:00
arc	ARC: mm: fix leakage of memory allocated for PTE	2022-10-17 16:32:12 -07:00
arm	ARM: dts: ux500: Add trips to battery thermal zones	2022-11-01 12:21:17 +01:00
arm64	KVM/arm64 updates for 6.2	2022-12-09 09:12:12 +01:00
csky	- hfs and hfsplus kmap API modernization from Fabio Francesco	2022-10-12 11:00:22 -07:00
hexagon	- hfs and hfsplus kmap API modernization from Fabio Francesco	2022-10-12 11:00:22 -07:00
ia64	- hfs and hfsplus kmap API modernization from Fabio Francesco	2022-10-12 11:00:22 -07:00
loongarch	LoongArch: BPF: Avoid declare variables in switch-case	2022-10-29 16:29:31 +08:00
m68k	- hfs and hfsplus kmap API modernization from Fabio Francesco	2022-10-12 11:00:22 -07:00
microblaze	- hfs and hfsplus kmap API modernization from Fabio Francesco	2022-10-12 11:00:22 -07:00
mips	Random number generator fixes for Linux 6.1-rc1.	2022-10-16 15:27:07 -07:00
nios2	- hfs and hfsplus kmap API modernization from Fabio Francesco	2022-10-12 11:00:22 -07:00
openrisc	OpenRISC 6.1 Updates	2022-10-15 16:47:33 -07:00
parisc	parisc: Avoid printing the hardware path twice	2022-10-31 15:37:14 +01:00
powerpc	KVM: replace direct irq.h inclusion	2022-11-09 12:31:37 -05:00
riscv	RISC-V Fixes for 6.1-rc3	2022-10-28 17:03:00 -07:00
s390	- Second batch of the lazy destroy patches	2022-11-28 13:34:47 -05:00
sh	- hfs and hfsplus kmap API modernization from Fabio Francesco	2022-10-12 11:00:22 -07:00
sparc	Random number generator fixes for Linux 6.1-rc1.	2022-10-16 15:27:07 -07:00
um	Random number generator fixes for Linux 6.1-rc1.	2022-10-16 15:27:07 -07:00
x86	KVM: x86/mmu: Don't attempt to map leaf if target TDP MMU SPTE is frozen	2022-12-23 12:33:52 -05:00
xtensa	- hfs and hfsplus kmap API modernization from Fabio Francesco	2022-10-12 11:00:22 -07:00
.gitignore	…
Kconfig	- Yu Zhao's Multi-Gen LRU patches are here. They've been under test in	2022-10-10 17:53:04 -07:00