Tetsuo Handa 860cd4acda misc: vmw_vmci: explicitly initialize vmci_datagram payload ... commit b2192cfeba8481224da0a4ec3b4a7ccd80b1623b upstream. KMSAN complains that vmci_check_host_caps() left the payload part of check_msg uninitialized. ===================================================== BUG: KMSAN: uninit-value in kmsan_check_memory+0xd/0x10 CPU: 1 PID: 1 Comm: swapper/0 Tainted: G B 5.11.0-rc7+ #4 Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 02/27/2020 Call Trace: dump_stack+0x21c/0x280 kmsan_report+0xfb/0x1e0 kmsan_internal_check_memory+0x202/0x520 kmsan_check_memory+0xd/0x10 iowrite8_rep+0x86/0x380 vmci_guest_probe_device+0xf0b/0x1e70 pci_device_probe+0xab3/0xe70 really_probe+0xd16/0x24d0 driver_probe_device+0x29d/0x3a0 device_driver_attach+0x25a/0x490 __driver_attach+0x78c/0x840 bus_for_each_dev+0x210/0x340 driver_attach+0x89/0xb0 bus_add_driver+0x677/0xc40 driver_register+0x485/0x8e0 __pci_register_driver+0x1ff/0x350 vmci_guest_init+0x3e/0x41 vmci_drv_init+0x1d6/0x43f do_one_initcall+0x39c/0x9a0 do_initcall_level+0x1d7/0x259 do_initcalls+0x127/0x1cb do_basic_setup+0x33/0x36 kernel_init_freeable+0x29a/0x3ed kernel_init+0x1f/0x840 ret_from_fork+0x1f/0x30 Uninit was created at: kmsan_internal_poison_shadow+0x5c/0xf0 kmsan_slab_alloc+0x8d/0xe0 kmem_cache_alloc+0x84f/0xe30 vmci_guest_probe_device+0xd11/0x1e70 pci_device_probe+0xab3/0xe70 really_probe+0xd16/0x24d0 driver_probe_device+0x29d/0x3a0 device_driver_attach+0x25a/0x490 __driver_attach+0x78c/0x840 bus_for_each_dev+0x210/0x340 driver_attach+0x89/0xb0 bus_add_driver+0x677/0xc40 driver_register+0x485/0x8e0 __pci_register_driver+0x1ff/0x350 vmci_guest_init+0x3e/0x41 vmci_drv_init+0x1d6/0x43f do_one_initcall+0x39c/0x9a0 do_initcall_level+0x1d7/0x259 do_initcalls+0x127/0x1cb do_basic_setup+0x33/0x36 kernel_init_freeable+0x29a/0x3ed kernel_init+0x1f/0x840 ret_from_fork+0x1f/0x30 Bytes 28-31 of 36 are uninitialized Memory access of size 36 starts at ffff8881675e5f00 ===================================================== Fixes: 1f166439917b69d3 ("VMCI: guest side driver implementation.") Cc: <stable@vger.kernel.org> Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Link: https://lore.kernel.org/r/20210402121742.3917-2-penguin-kernel@I-love.SAKURA.ne.jp Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-05-20 16:07:40 +08:00
..
Kconfig	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
Makefile	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
vmci_context.c	misc: vmw_vmci: fix kernel info-leak by initializing dbells in vmci_ctx_get_chkpt_doorbells()	2021-03-16 16:43:52 +08:00
vmci_context.h	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
vmci_datagram.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
vmci_datagram.h	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
vmci_doorbell.c	misc: vmw_vmci: explicitly initialize vmci_notify_bm_set_msg struct	2021-05-20 16:07:40 +08:00
vmci_doorbell.h	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
vmci_driver.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
vmci_driver.h	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
vmci_event.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
vmci_event.h	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
vmci_guest.c	misc: vmw_vmci: explicitly initialize vmci_datagram payload	2021-05-20 16:07:40 +08:00
vmci_handle_array.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
vmci_handle_array.h	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
vmci_host.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
vmci_queue_pair.c	drivers/misc/vmw_vmci: restrict too big queue size in qp_host_alloc_queue	2021-04-12 12:52:36 +08:00
vmci_queue_pair.h	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
vmci_resource.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
vmci_resource.h	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
vmci_route.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
vmci_route.h	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00