Tianyang Zhang 985f086f28 LoongArch: Fix panic caused by NULL-PMD in huge_pte_offset() ... commit ee084fa961 upstream. ERROR INFO: CPU 25 Unable to handle kernel paging request at virtual address 0x0 ... Call Trace: [<900000000023c30c>] huge_pte_offset+0x3c/0x58 [<900000000057fd4c>] hugetlb_follow_page_mask+0x74/0x438 [<900000000051fee8>] __get_user_pages+0xe0/0x4c8 [<9000000000522414>] faultin_page_range+0x84/0x380 [<9000000000564e8c>] madvise_vma_behavior+0x534/0xa48 [<900000000056689c>] do_madvise+0x1bc/0x3e8 [<9000000000566df4>] sys_madvise+0x24/0x38 [<90000000015b9e88>] do_syscall+0x78/0x98 [<9000000000221f18>] handle_syscall+0xb8/0x158 In some cases, pmd may be NULL and rely on NULL as the return value for processing, so it is necessary to determine this situation here. Cc: stable@vger.kernel.org Fixes: bd51834d1c ("LoongArch: Return NULL from huge_pte_offset() for invalid PMD") Signed-off-by: Tianyang Zhang <zhangtianyang@loongson.cn> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2025-06-27 11:11:37 +01:00
..
boot	LoongArch: Fix GMAC's phy-mode definitions in dts	2024-06-03 15:45:53 +08:00
configs	mm: z3fold: deprecate CONFIG_Z3FOLD	2024-09-17 01:07:00 -07:00
crypto	move asm/unaligned.h to linux/unaligned.h	2024-10-02 17:23:23 -04:00
include	LoongArch: Avoid using $r0/$r1 as "mask" for csrxchg	2025-06-27 11:11:37 +01:00
kernel	Fix mis-uses of 'cc-option' for warning disablement	2025-05-29 11:03:25 +02:00
kvm	Fix mis-uses of 'cc-option' for warning disablement	2025-05-29 11:03:25 +02:00
lib	LoongArch: csum: Fix OoB access in IP checksum code for negative lengths	2025-02-21 14:01:17 +01:00
mm	LoongArch: Fix panic caused by NULL-PMD in huge_pte_offset()	2025-06-27 11:11:37 +01:00
net	LoongArch: BPF: Use move_addr() for BPF_PSEUDO_FUNC	2025-04-10 14:39:36 +02:00
pci	LoongArch: Fix memleak in pci_acpi_scan_root()	2024-09-24 15:32:20 +08:00
power	LoongArch: Save and restore CSR.CNTC for hibernation	2025-05-22 14:29:44 +02:00
vdso	LoongArch: Fix build failure with GCC 15 (-std=gnu23)	2024-12-05 14:02:29 +01:00
Kbuild
Kconfig	LoongArch: Select ARCH_USE_MEMTEST	2025-05-02 07:59:04 +02:00
Kconfig.debug	LoongArch: Only allow OBJTOOL & ORC unwinder if toolchain supports -mthin-add-sub	2024-06-21 10:18:40 +08:00
Makefile	LoongArch: Explicitly specify code model in Makefile	2024-12-05 14:02:45 +01:00