From: Richard Henderson <richard.henderson@linaro.org>
Date: Tue, 5 Oct 2021 02:39:29 +0000 (-0700)
Subject: linux-user: Handle BUS_ADRALN in host_signal_handler
X-Git-Tag: v6.2.0-rc0~25^2
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=742f07628c0a0bd847b47ee0a0b20c44531e0ba5;p=thirdparty%2Fqemu.git

linux-user: Handle BUS_ADRALN in host_signal_handler

Handle BUS_ADRALN via cpu_loop_exit_sigbus, but allow other SIGBUS
si_codes to continue into the host-to-guest signal conversion code.

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---

diff --git a/linux-user/signal.c b/linux-user/signal.c
index df2c8678d0e..81c45bfce9c 100644
--- a/linux-user/signal.c
+++ b/linux-user/signal.c
@@ -860,6 +860,9 @@ static void host_signal_handler(int host_sig, siginfo_t *info, void *puc)
             cpu_loop_exit_sigsegv(cpu, guest_addr, access_type, maperr, pc);
         } else {
             sigprocmask(SIG_SETMASK, &uc->uc_sigmask, NULL);
+            if (info->si_code == BUS_ADRALN) {
+                cpu_loop_exit_sigbus(cpu, guest_addr, access_type, pc);
+            }
         }
 
         sync_sig = true;