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| author | Amit Daniel Kachhap <amit.kachhap@arm.com> | 2020-09-14 14:06:52 +0530 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2020-09-14 12:07:02 +0100 |
| commit | 4ef333b2d10680b5d966a733ed7171f72164fcd5 (patch) | |
| tree | 0d147a4cc7e5727049aba6b38b97fb0edbcc735f /arch/arm64/kernel/traps.c | |
| parent | 93396936ed0ce2c6f44140bd14728611d0bb065e (diff) | |
| download | linux-4ef333b2d10680b5d966a733ed7171f72164fcd5.tar.bz2 | |
arm64: traps: Allow force_signal_inject to pass esr error code
Some error signal need to pass proper ARM esr error code to userspace to
better identify the cause of the signal. So the function
force_signal_inject is extended to pass this as a parameter. The
existing code is not affected by this change.
Signed-off-by: Amit Daniel Kachhap <amit.kachhap@arm.com>
Reviewed-by: Dave Martin <Dave.Martin@arm.com>
Link: https://lore.kernel.org/r/20200914083656.21428-3-amit.kachhap@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64/kernel/traps.c')
| -rw-r--r-- | arch/arm64/kernel/traps.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/arch/arm64/kernel/traps.c b/arch/arm64/kernel/traps.c index 13ebd5ca2070..29fd00fe94f2 100644 --- a/arch/arm64/kernel/traps.c +++ b/arch/arm64/kernel/traps.c @@ -412,7 +412,7 @@ exit: return fn ? fn(regs, instr) : 1; } -void force_signal_inject(int signal, int code, unsigned long address) +void force_signal_inject(int signal, int code, unsigned long address, unsigned int err) { const char *desc; struct pt_regs *regs = current_pt_regs(); @@ -438,7 +438,7 @@ void force_signal_inject(int signal, int code, unsigned long address) signal = SIGKILL; } - arm64_notify_die(desc, regs, signal, code, (void __user *)address, 0); + arm64_notify_die(desc, regs, signal, code, (void __user *)address, err); } /* @@ -455,7 +455,7 @@ void arm64_notify_segfault(unsigned long addr) code = SEGV_ACCERR; mmap_read_unlock(current->mm); - force_signal_inject(SIGSEGV, code, addr); + force_signal_inject(SIGSEGV, code, addr, 0); } void do_undefinstr(struct pt_regs *regs) @@ -468,14 +468,14 @@ void do_undefinstr(struct pt_regs *regs) return; BUG_ON(!user_mode(regs)); - force_signal_inject(SIGILL, ILL_ILLOPC, regs->pc); + force_signal_inject(SIGILL, ILL_ILLOPC, regs->pc, 0); } NOKPROBE_SYMBOL(do_undefinstr); void do_bti(struct pt_regs *regs) { BUG_ON(!user_mode(regs)); - force_signal_inject(SIGILL, ILL_ILLOPC, regs->pc); + force_signal_inject(SIGILL, ILL_ILLOPC, regs->pc, 0); } NOKPROBE_SYMBOL(do_bti); @@ -528,7 +528,7 @@ static void user_cache_maint_handler(unsigned int esr, struct pt_regs *regs) __user_cache_maint("ic ivau", address, ret); break; default: - force_signal_inject(SIGILL, ILL_ILLOPC, regs->pc); + force_signal_inject(SIGILL, ILL_ILLOPC, regs->pc, 0); return; } @@ -581,7 +581,7 @@ static void mrs_handler(unsigned int esr, struct pt_regs *regs) sysreg = esr_sys64_to_sysreg(esr); if (do_emulate_mrs(regs, sysreg, rt) != 0) - force_signal_inject(SIGILL, ILL_ILLOPC, regs->pc); + force_signal_inject(SIGILL, ILL_ILLOPC, regs->pc, 0); } static void wfi_handler(unsigned int esr, struct pt_regs *regs) |