Mohammed Gamal c373e49fbb Drivers: vmbus: Check for channel allocation before looking up relids ... [ Upstream commit 1eb65c8687 ] relid2channel() assumes vmbus channel array to be allocated when called. However, in cases such as kdump/kexec, not all relids will be reset by the host. When the second kernel boots and if the guest receives a vmbus interrupt during vmbus driver initialization before vmbus_connect() is called, before it finishes, or if it fails, the vmbus interrupt service routine is called which in turn calls relid2channel() and can cause a null pointer dereference. Print a warning and error out in relid2channel() for a channel id that's invalid in the second kernel. Fixes: 8b6a877c06 ("Drivers: hv: vmbus: Replace the per-CPU channel lists with a global array of channels") Signed-off-by: Mohammed Gamal <mgamal@redhat.com> Reviewed-by: Dexuan Cui <decui@microsoft.com> Link: https://lore.kernel.org/r/20230217204411.212709-1-mgamal@redhat.com Signed-off-by: Wei Liu <wei.liu@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-04-13 16:48:17 +02:00
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channel_mgmt.c	Drivers: hv: vmbus: fix double free in the error path of vmbus_add_channel_work()	2022-12-02 17:41:05 +01:00
channel.c	Drivers: hv: vmbus: Fix handling of messages with transaction ID of zero	2022-06-09 10:23:07 +02:00
connection.c	Drivers: vmbus: Check for channel allocation before looking up relids	2023-04-13 16:48:17 +02:00
hv_balloon.c	Drivers: hv: balloon: Support status report for larger page sizes	2022-09-05 10:30:04 +02:00
hv_common.c	drivers: hv: Decouple Hyper-V clock/timer code from VMbus drivers	2021-07-19 09:24:28 +00:00
hv_debugfs.c
hv_fcopy.c	Drivers: hv: vmbus: Copy packets sent by Hyper-V out of the ring buffer	2021-05-14 17:37:46 +00:00
hv_kvp.c	Drivers: hv: vmbus: Copy packets sent by Hyper-V out of the ring buffer	2021-05-14 17:37:46 +00:00
hv_snapshot.c	hv_utils: Set the maximum packet size for VSS driver to the length of the receive buffer	2021-08-25 19:03:20 +00:00
hv_trace_balloon.h
hv_trace.c
hv_trace.h	Drivers: hv: vmbus: Drivers: hv: vmbus: Introduce CHANNELMSG_MODIFYCHANNEL_RESPONSE	2021-04-18 13:03:11 +00:00
hv_util.c	drivers: hv: Decouple Hyper-V clock/timer code from VMbus drivers	2021-07-19 09:24:28 +00:00
hv_utils_transport.c
hv_utils_transport.h
hv.c	drivers: hv: Create a consistent pattern for checking Hyper-V hypercall status	2021-04-21 09:49:19 +00:00
hyperv_vmbus.h	hyperv/vmbus: include linux/bitops.h	2021-10-22 19:16:08 +00:00
Kconfig	hv: utils: add PTP_1588_CLOCK to Kconfig to fix build	2022-04-08 14:22:46 +02:00
Makefile	Drivers: hv: Move Hyper-V extended capability check to arch neutral code	2021-06-05 10:22:34 +00:00
ring_buffer.c	video: hyperv_fb: Avoid taking busy spinlock on panic path	2022-12-31 13:14:39 +01:00
vmbus_drv.c	Drivers: hv: vmbus: fix possible memory leak in vmbus_device_register()	2022-12-02 17:41:05 +01:00