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[Qemu-devel] [PULL 25/35] exec: Add missing rcu_read_unlock
From: |
Paolo Bonzini |
Subject: |
[Qemu-devel] [PULL 25/35] exec: Add missing rcu_read_unlock |
Date: |
Fri, 20 Jan 2017 14:31:29 +0100 |
From: Roman Kapl <address@hidden>
rcu_read_unlock was not called if the address_space_access_valid result is
negative.
This caused (at least) a problem when qemu on PPC/E500+TAP failed to terminate
properly and instead got stuck in a deadlock.
Signed-off-by: Roman Kapl <address@hidden>
Message-Id: <address@hidden>
Cc: address@hidden
Signed-off-by: Paolo Bonzini <address@hidden>
---
exec.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/exec.c b/exec.c
index 47835c1..c95ae33 100644
--- a/exec.c
+++ b/exec.c
@@ -2960,6 +2960,7 @@ bool address_space_access_valid(AddressSpace *as, hwaddr
addr, int len, bool is_
if (!memory_access_is_direct(mr, is_write)) {
l = memory_access_size(mr, l, addr);
if (!memory_region_access_valid(mr, xlat, l, is_write)) {
+ rcu_read_unlock();
return false;
}
}
--
2.9.3
- [Qemu-devel] [PULL 14/35] build: remove --enable-colo/--disable-colo, (continued)
- [Qemu-devel] [PULL 14/35] build: remove --enable-colo/--disable-colo, Paolo Bonzini, 2017/01/20
- [Qemu-devel] [PULL 13/35] event_notifier: cleanups around event_notifier_set_handler, Paolo Bonzini, 2017/01/20
- [Qemu-devel] [PULL 11/35] stubs: group all monitor_fdset_* functions in a single file, Paolo Bonzini, 2017/01/20
- [Qemu-devel] [PULL 16/35] acpi: filter based on CONFIG_ACPI_X86 rather than TARGET, Paolo Bonzini, 2017/01/20
- [Qemu-devel] [PULL 15/35] stubs: remove stubs/kvm.c, Paolo Bonzini, 2017/01/20
- [Qemu-devel] [PULL 18/35] scsi-block: fix direction of BYTCHK test for VERIFY commands, Paolo Bonzini, 2017/01/20
- [Qemu-devel] [PULL 17/35] pc: fix crash in rtc_set_memory() if initial cpu is marked as hotplugged, Paolo Bonzini, 2017/01/20
- [Qemu-devel] [PULL 19/35] serial: fix memory leak in serial exit, Paolo Bonzini, 2017/01/20
- [Qemu-devel] [PULL 20/35] qemu-thread: fix qemu_thread_set_name() race in qemu_thread_create(), Paolo Bonzini, 2017/01/20
- [Qemu-devel] [PULL 21/35] hxtool: emit Texinfo headings as @subsection, Paolo Bonzini, 2017/01/20
- [Qemu-devel] [PULL 25/35] exec: Add missing rcu_read_unlock,
Paolo Bonzini <=
- [Qemu-devel] [PULL 22/35] x86: ioapic: add traces for ioapic, Paolo Bonzini, 2017/01/20
- [Qemu-devel] [PULL 24/35] x86: ioapic: fix fail migration when irqchip=split, Paolo Bonzini, 2017/01/20
- [Qemu-devel] [PULL 23/35] x86: ioapic: dump version for "info ioapic", Paolo Bonzini, 2017/01/20
- [Qemu-devel] [PULL 26/35] char: fix ctrl-a b not working, Paolo Bonzini, 2017/01/20
- [Qemu-devel] [PULL 27/35] ramblock-notifier: new, Paolo Bonzini, 2017/01/20
- [Qemu-devel] [PULL 28/35] KVM: PPC: eliminate unnecessary duplicate constants, Paolo Bonzini, 2017/01/20
- [Qemu-devel] [PULL 29/35] kvm: move cpu synchronization code, Paolo Bonzini, 2017/01/20
- [Qemu-devel] [PULL 32/35] hax: add Darwin support, Paolo Bonzini, 2017/01/20