Deepak Gupta fbb5fe811d lib: sbi: expected trap must always clear MPRV ...

Expected trap must always clear MPRV. Currently it doesn't. There is a
security issue here where if firmware was doing ld/st with MPRV=1 and
since there would be a expected trap, opensbi will continue to run as
MPRV=1. Security impact is DoS where opensbi will just keep trapping.

Signed-off-by: Deepak Gupta <debug@rivosinc.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/r/20251124220339.3695940-1-debug@rivosinc.com
Signed-off-by: Anup Patel <anup@brainfault.org>

2025-12-26 16:22:09 +05:30

..

tests

lib: tests: add bitwise operations unit tests

2025-03-23 21:06:25 +05:30

Kconfig

lib: sbi: Implement SBI MPXY extension

2024-12-06 09:26:52 +05:30

objects.mk

lib: sbi: Factor-out PMP programming into separate sources

2025-12-16 20:16:47 +05:30

riscv_asm.c

lib: Allow custom CSRs in csr_read_num() and csr_write_num()

2025-10-21 19:34:09 +05:30

riscv_atomic.c

lib: Emit lr and sc instructions based on -march flags

2025-03-28 18:52:05 +05:30

riscv_hardfp.S

lib: Move sbi core library to lib/sbi

2019-06-19 09:48:51 +05:30

riscv_locks.c

lib: Emit lr and sc instructions based on -march flags

2025-03-28 18:52:05 +05:30

sbi_bitmap.c

lib: Simple bitmap library

2020-03-11 15:29:45 +05:30

sbi_bitops.c

lib: fix compilation when strings.h is included

2022-02-04 11:04:19 +05:30

sbi_console.c

lib: sbi: Introduce an early console buffer for caching early prints

2024-07-24 12:18:41 +05:30

sbi_cppc.c

lib: sbi: Implement SBI CPPC extension

2023-04-07 09:36:01 +05:30

sbi_dbtr.c

lib: sbi: Replace sbi_hart_pmp_xyz() and sbi_hart_map/unmap_addr()

2025-12-16 20:16:47 +05:30

sbi_domain_context.c

lib: sbi: Replace sbi_hart_pmp_xyz() and sbi_hart_map/unmap_addr()

2025-12-16 20:16:47 +05:30

sbi_domain_data.c

lib: sbi: Introduce domain data

2024-10-25 23:00:07 +05:30

sbi_domain.c

lib: sbi: give platform choice of using single memregion to cover OpenSBI

2025-12-21 20:33:23 +05:30

sbi_double_trap.c

lib: sbi: sse: allow adding new events

2025-01-30 10:40:49 +05:30

sbi_ecall_base.c

lib: sbi: Print list of available SBI extensions at boot-time

2024-12-22 11:16:13 +05:30

sbi_ecall_cppc.c

lib: sbi: Print list of available SBI extensions at boot-time

2024-12-22 11:16:13 +05:30

sbi_ecall_dbcn.c

lib: sbi: Replace sbi_hart_pmp_xyz() and sbi_hart_map/unmap_addr()

2025-12-16 20:16:47 +05:30

sbi_ecall_dbtr.c

lib: sbi: dbtr: Fix update_triggers to match SBI

2025-06-16 17:01:52 +05:30

sbi_ecall_exts.carray

lib: sbi_ecall: Generate extensions list with carray

2022-10-23 11:00:30 +05:30

sbi_ecall_fwft.c

include: sbi: Change SBI spec version to 3.0

2025-05-20 13:47:34 +05:30

sbi_ecall_hsm.c

lib: sbi: Print list of available SBI extensions at boot-time

2024-12-22 11:16:13 +05:30

sbi_ecall_ipi.c

lib: sbi: Print list of available SBI extensions at boot-time

2024-12-22 11:16:13 +05:30

sbi_ecall_legacy.c

lib: sbi: Print list of available SBI extensions at boot-time

2024-12-22 11:16:13 +05:30

sbi_ecall_mpxy.c

include: sbi: Change SBI spec version to 3.0

2025-05-20 13:47:34 +05:30

sbi_ecall_pmu.c

lib: sbi: Print list of available SBI extensions at boot-time

2024-12-22 11:16:13 +05:30

sbi_ecall_rfence.c

lib: sbi: Print list of available SBI extensions at boot-time

2024-12-22 11:16:13 +05:30

sbi_ecall_srst.c

lib: sbi: Print list of available SBI extensions at boot-time

2024-12-22 11:16:13 +05:30

sbi_ecall_sse.c

include: sbi: Change SBI spec version to 3.0

2025-05-20 13:47:34 +05:30

sbi_ecall_susp.c

lib: sbi: Print list of available SBI extensions at boot-time

2024-12-22 11:16:13 +05:30

sbi_ecall_time.c

lib: sbi: Print list of available SBI extensions at boot-time

2024-12-22 11:16:13 +05:30

sbi_ecall_vendor.c

lib: sbi: Print list of available SBI extensions at boot-time

2024-12-22 11:16:13 +05:30

sbi_ecall.c

lib: sbi: Remove unnecessary SBI_INIT_LIST_HEAD

2025-04-15 11:38:20 +05:30

sbi_emulate_csr.c

lib: sbi: factorize previous mode computation

2024-10-25 23:53:18 +05:30

sbi_expected_trap.S

lib: sbi: expected trap must always clear MPRV

2025-12-26 16:22:09 +05:30

sbi_fifo.c

lib: sbi: Allow forceful queueing of data in sbi_fifo_enqueue()

2024-07-24 12:18:36 +05:30

sbi_fwft.c

lib: sbi: Flush TLBs upon FWFT ADUE change

2025-12-16 20:19:21 +05:30

sbi_hart_pmp.c

lib: sbi_domain: add sbi_domain_get_oldpmp_flags

2025-12-21 20:33:18 +05:30

sbi_hart_protection.c

lib: sbi: Introduce hart protection abstraction

2025-12-16 20:16:47 +05:30

sbi_hart.c

lib: sbi: Factor-out PMP programming into separate sources

2025-12-16 20:16:47 +05:30

sbi_heap.c

lib: sbi_heap: Simplify allocation algorithm

2025-09-01 10:39:11 +05:30

sbi_hfence.S

lib: sbi: Fix GPA passed to __sbi_hfence_gvma_xyz() functions

2021-11-02 16:02:08 +05:30

sbi_hsm.c

lib: sbi: Add system_resume callback for restoring the system

2025-10-28 11:28:09 +05:30

sbi_illegal_atomic.c

lib: sbi: Remove redundant call to sbi_hart_expected_trap_addr()

2025-07-20 20:54:34 +05:30

sbi_illegal_insn.c

lib: Emulate AMO instructions when Zaamo is not available

2025-05-20 09:18:03 +05:30

sbi_init.c

lib: sbi: Factor-out PMP programming into separate sources

2025-12-16 20:16:47 +05:30

sbi_ipi.c

lib: sbi: Extends sbi_ipi_raw_send() to use all available IPI devices

2025-10-28 11:28:01 +05:30

sbi_irqchip.c

lib: sbi_irqchip: Set the IRQ handler when registering a chip

2024-11-28 11:51:56 +05:30

sbi_math.c

lib: Create a separate math helper function file

2020-05-10 09:59:24 +05:30

sbi_mpxy.c

lib: sbi: Replace sbi_hart_pmp_xyz() and sbi_hart_map/unmap_addr()

2025-12-16 20:16:47 +05:30

sbi_platform.c

lib: sbi: Remove sbi_platform_hart_index/invalid() functions

2023-09-24 11:39:30 +05:30

sbi_pmu.c

lib: sbi: Replace sbi_hart_pmp_xyz() and sbi_hart_map/unmap_addr()

2025-12-16 20:16:47 +05:30

sbi_scratch.c

lib: sbi: Set the scratch allocation to alignment to cacheline size

2025-04-24 09:23:47 +05:30

sbi_sse.c

lib: sbi: Replace sbi_hart_pmp_xyz() and sbi_hart_map/unmap_addr()

2025-12-16 20:16:47 +05:30

sbi_string.c

lib: sbi: Fix potential garbage data in string copy functions

2025-03-23 18:38:57 +05:30

sbi_system.c

lib: sbi: Add system_resume callback for restoring the system

2025-10-28 11:28:09 +05:30

sbi_timer.c

lib: sbi: hart: Detect existence of cycle and instret CSRs for Zicntr

2025-05-20 13:25:53 +05:30

sbi_tlb.c

lib: sbi: Expose __sbi_sfence_vma_all() function

2025-12-16 20:19:21 +05:30

sbi_trap_ldst.c

lib: sbi_misaligned_ldst: Add handling of vector load/store

2024-12-06 17:43:06 +05:30

sbi_trap_v_ldst.c

Makefile: Don't enable V-extension using -march option

2024-12-15 11:30:48 +05:30

sbi_trap.c

lib: sbi_trap: Add support for vectored interrupts

2025-04-13 05:51:17 +05:30

sbi_unpriv.c

lib: sbi: Remove redundant call to sbi_hart_expected_trap_addr()

2025-07-20 20:54:34 +05:30