[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Stable-7.2.7 36/62] linux-user/mips: fix abort on integer overflow
From: |
Michael Tokarev |
Subject: |
[Stable-7.2.7 36/62] linux-user/mips: fix abort on integer overflow |
Date: |
Thu, 9 Nov 2023 16:59:04 +0300 |
From: Mikulas Patocka <mpatocka@redhat.com>
QEMU mips userspace emulation crashes with "qemu: unhandled CPU exception
0x15 - aborting" when one of the integer arithmetic instructions detects
an overflow.
This patch fixes it so that it delivers SIGFPE with FPE_INTOVF instead.
Cc: qemu-stable@nongnu.org
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Message-Id: <3ef979a8-3ee1-eb2d-71f7-d788ff88dd11@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
(cherry picked from commit 6fad9b4bb91dcc824f9c00a36ee843883b58313b)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
diff --git a/linux-user/mips/cpu_loop.c b/linux-user/mips/cpu_loop.c
index 8735e58bad..990b03e727 100644
--- a/linux-user/mips/cpu_loop.c
+++ b/linux-user/mips/cpu_loop.c
@@ -180,7 +180,9 @@ done_syscall:
}
force_sig_fault(TARGET_SIGFPE, si_code, env->active_tc.PC);
break;
-
+ case EXCP_OVERFLOW:
+ force_sig_fault(TARGET_SIGFPE, TARGET_FPE_INTOVF,
env->active_tc.PC);
+ break;
/* The code below was inspired by the MIPS Linux kernel trap
* handling code in arch/mips/kernel/traps.c.
*/
--
2.39.2
- [Stable-7.2.7 17/62] esp: use correct type for esp_dma_enable() in sysbus_esp_gpio_demux(), (continued)
- [Stable-7.2.7 17/62] esp: use correct type for esp_dma_enable() in sysbus_esp_gpio_demux(), Michael Tokarev, 2023/11/09
- [Stable-7.2.7 27/62] hw/display/ramfb: plug slight guest-triggerable leak on mode setting, Michael Tokarev, 2023/11/09
- [Stable-7.2.7 25/62] target/i386: generalize operand size "ph" for use in CVTPS2PD, Michael Tokarev, 2023/11/09
- [Stable-7.2.7 28/62] chardev/char-pty: Avoid losing bytes when the other side just (re-)connected, Michael Tokarev, 2023/11/09
- [Stable-7.2.7 30/62] amd_iommu: Fix APIC address check, Michael Tokarev, 2023/11/09
- [Stable-7.2.7 29/62] linux-user/hppa: Fix struct target_sigcontext layout, Michael Tokarev, 2023/11/09
- [Stable-7.2.7 31/62] migration/qmp: Fix crash on setting tls-authz with null, Michael Tokarev, 2023/11/09
- [Stable-7.2.7 32/62] hw/audio/es1370: reset current sample counter, Michael Tokarev, 2023/11/09
- [Stable-7.2.7 33/62] disas/riscv: Fix the typo of inverted order of pmpaddr13 and pmpaddr14, Michael Tokarev, 2023/11/09
- [Stable-7.2.7 34/62] hw/pvrdma: Protect against buggy or malicious guest driver, Michael Tokarev, 2023/11/09
- [Stable-7.2.7 36/62] linux-user/mips: fix abort on integer overflow,
Michael Tokarev <=
- [Stable-7.2.7 38/62] lasips2: LASI PS/2 devices are not user-createable, Michael Tokarev, 2023/11/09
- [Stable-7.2.7 37/62] linux-user/sh4: Fix crashes on signal delivery, Michael Tokarev, 2023/11/09
- [Stable-7.2.7 42/62] tests/tcg: Add -fno-stack-protector, Michael Tokarev, 2023/11/09
- [Stable-7.2.7 43/62] qemu-img: rebase: stop when reaching EOF of old backing file, Michael Tokarev, 2023/11/09
- [Stable-7.2.7 44/62] qemu-iotests: 024: add rebasing test case for overlay_size > backing_size, Michael Tokarev, 2023/11/09
- [Stable-7.2.7 45/62] Revert "linux-user: add more compat ioctl definitions", Michael Tokarev, 2023/11/09
- [Stable-7.2.7 35/62] migration: Fix analyze-migration read operation signedness, Michael Tokarev, 2023/11/09
- [Stable-7.2.7 41/62] tests/migration: Add -fno-stack-protector, Michael Tokarev, 2023/11/09
- [Stable-7.2.7 40/62] misc/led: LED state is set opposite of what is expected, Michael Tokarev, 2023/11/09
- [Stable-7.2.7 39/62] hw/sd/sdhci: Block Size Register bits [14:12] is lost, Michael Tokarev, 2023/11/09