Alexandre Ghiti 8633e74002 riscv: Fix module_alloc() that did not reset the linear mapping permissions ... [ Upstream commit 749b94b080 ] After unloading a module, we must reset the linear mapping permissions, see the example below: Before unloading a module: 0xffffaf809d65d000-0xffffaf809d6dc000 0x000000011d65d000 508K PTE . .. .. D A G . . W R V 0xffffaf809d6dc000-0xffffaf809d6dd000 0x000000011d6dc000 4K PTE . .. .. D A G . . . R V 0xffffaf809d6dd000-0xffffaf809d6e1000 0x000000011d6dd000 16K PTE . .. .. D A G . . W R V 0xffffaf809d6e1000-0xffffaf809d6e7000 0x000000011d6e1000 24K PTE . .. .. D A G . X . R V After unloading a module: 0xffffaf809d65d000-0xffffaf809d6e1000 0x000000011d65d000 528K PTE . .. .. D A G . . W R V 0xffffaf809d6e1000-0xffffaf809d6e7000 0x000000011d6e1000 24K PTE . .. .. D A G . X W R V The last mapping is not reset and we end up with WX mappings in the linear mapping. So add VM_FLUSH_RESET_PERMS to our module_alloc() definition. Fixes: 0cff8bff7a ("riscv: avoid the PIC offset of static percpu data in module beyond 2G limits") Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com> Link: https://lore.kernel.org/r/20231213134027.155327-2-alexghiti@rivosinc.com Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-01-25 15:35:50 -08:00
..
boot	riscv: boot: Fix creation of loader.bin	2023-11-20 11:59:35 +01:00
configs	Kbuild updates for v6.6	2023-09-05 11:01:47 -07:00
errata	riscv: errata: andes: Probe for IOCP only once in boot stage	2023-12-13 18:45:19 +01:00
include	riscv: Check if the code to patch lies in the exit section	2024-01-25 15:35:50 -08:00
kernel	riscv: Fix module_alloc() that did not reset the linear mapping permissions	2024-01-25 15:35:50 -08:00
kvm	RISCV: KVM: update external interrupt atomically for IMSIC swfile	2024-01-10 17:16:59 +01:00
lib	riscv: uaccess: Return the number of bytes effectively not copied	2023-08-16 07:30:06 -07:00
mm	riscv: correct pt_level name via pgtable_l5/4_enabled	2023-11-28 17:20:13 +00:00
net	riscv, bpf: Track both a0 (RISC-V ABI) and a5 (BPF) return values	2023-10-09 15:21:25 +02:00
purgatory	riscv/purgatory: Disable CFI	2023-08-23 14:16:40 -07:00
tools	riscv: Check relocations at compile time	2023-04-19 07:46:32 -07:00
Kbuild	kexec: rename ARCH_HAS_KEXEC_PURGATORY	2023-08-18 10:18:54 -07:00
Kconfig	kexec: fix KEXEC_FILE dependencies	2024-01-05 15:19:41 +01:00
Kconfig.debug
Kconfig.errata	riscv: only select DMA_DIRECT_REMAP from RISCV_ISA_ZICBOM and ERRATA_THEAD_PBMT	2023-10-26 09:42:38 +02:00
Kconfig.socs	riscv: Kconfig: Add select ARM_AMBA to SOC_STARFIVE	2023-12-13 18:45:35 +01:00
Makefile	riscv: Remove duplicate objcopy flag	2023-10-12 11:34:03 -07:00
Makefile.postlink	riscv: Use --emit-relocs in order to move .rela.dyn in init	2023-04-19 07:46:33 -07:00