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[Qemu-stable] [PATCH 39/81] 9pfs: fix crash when fsdev is missing
From: |
Michael Roth |
Subject: |
[Qemu-stable] [PATCH 39/81] 9pfs: fix crash when fsdev is missing |
Date: |
Mon, 20 Mar 2017 18:08:03 -0500 |
From: Greg Kurz <address@hidden>
If the user passes -device virtio-9p without the corresponding -fsdev, QEMU
dereferences a NULL pointer and crashes.
This is a 2.8 regression introduced by commit 702dbcc274e2c.
Signed-off-by: Greg Kurz <address@hidden>
Reviewed-by: Li Qiang <address@hidden>
(cherry picked from commit f2b58c43758efc61e2a49b899f5e58848489d0dc)
Signed-off-by: Michael Roth <address@hidden>
---
hw/9pfs/9p.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/hw/9pfs/9p.c b/hw/9pfs/9p.c
index faebd91..68725b7 100644
--- a/hw/9pfs/9p.c
+++ b/hw/9pfs/9p.c
@@ -3521,7 +3521,7 @@ int v9fs_device_realize_common(V9fsState *s, Error **errp)
rc = 0;
out:
if (rc) {
- if (s->ops->cleanup && s->ctx.private) {
+ if (s->ops && s->ops->cleanup && s->ctx.private) {
s->ops->cleanup(&s->ctx);
}
g_free(s->tag);
--
2.7.4
- [Qemu-stable] [PATCH 30/81] 9pfs: fix fd leak in local_opendir(), (continued)
- [Qemu-stable] [PATCH 30/81] 9pfs: fix fd leak in local_opendir(), Michael Roth, 2017/03/20
- [Qemu-stable] [PATCH 38/81] virtio: fix vq->inuse recalc after migr, Michael Roth, 2017/03/20
- [Qemu-stable] [PATCH 03/81] 9pfs: remove side-effects in local_open() and local_opendir(), Michael Roth, 2017/03/20
- [Qemu-stable] [PATCH 46/81] exec: Add missing rcu_read_unlock, Michael Roth, 2017/03/20
- [Qemu-stable] [PATCH 50/81] tcg/aarch64: Fix addsub2 for 0+C, Michael Roth, 2017/03/20
- [Qemu-stable] [PATCH 41/81] ui/gtk: fix crash at startup when no console is available, Michael Roth, 2017/03/20
- [Qemu-stable] [PATCH 33/81] 9pfs: fix O_PATH build break with older glibc versions, Michael Roth, 2017/03/20
- [Qemu-stable] [PATCH 34/81] 9pfs: fix vulnerability in openat_dir() and local_unlinkat_common(), Michael Roth, 2017/03/20
- [Qemu-stable] [PATCH 45/81] virtio-crypto: fix possible integer and heap overflow, Michael Roth, 2017/03/20
- [Qemu-stable] [PATCH 37/81] pci: fix error message for express slots, Michael Roth, 2017/03/20
- [Qemu-stable] [PATCH 39/81] 9pfs: fix crash when fsdev is missing,
Michael Roth <=
- [Qemu-stable] [PATCH 43/81] ui/vnc: Fix problem with sending too many bytes as server name, Michael Roth, 2017/03/20
- [Qemu-stable] [PATCH 42/81] scsi-block: fix direction of BYTCHK test for VERIFY commands, Michael Roth, 2017/03/20
- [Qemu-stable] [PATCH 44/81] qemu-thread: fix qemu_thread_set_name() race in qemu_thread_create(), Michael Roth, 2017/03/20
- [Qemu-stable] [PATCH 48/81] x86: ioapic: fix fail migration when irqchip=split, Michael Roth, 2017/03/20
- [Qemu-stable] [PATCH 49/81] char: fix ctrl-a b not working, Michael Roth, 2017/03/20
- [Qemu-stable] [PATCH 36/81] balloon: Don't balloon roms, Michael Roth, 2017/03/20
- [Qemu-stable] [PATCH 32/81] 9pfs: don't use AT_EMPTY_PATH in local_set_cred_passthrough(), Michael Roth, 2017/03/20
- [Qemu-stable] [PATCH 52/81] ui: use evdev keymap when running under wayland, Michael Roth, 2017/03/20
- [Qemu-stable] [PATCH 54/81] block/iscsi: avoid data corruption with cache=writeback, Michael Roth, 2017/03/20
- [Qemu-stable] [PATCH 57/81] cpu-exec: fix icount out-of-bounds access, Michael Roth, 2017/03/20