linux-stable/net/9p
Anant Thazhemadam 7ca1db21ef net: 9p: initialize sun_server.sun_path to have addr's value only when addr is valid
In p9_fd_create_unix, checking is performed to see if the addr (passed
as an argument) is NULL or not.
However, no check is performed to see if addr is a valid address, i.e.,
it doesn't entirely consist of only 0's.
The initialization of sun_server.sun_path to be equal to this faulty
addr value leads to an uninitialized variable, as detected by KMSAN.
Checking for this (faulty addr) and returning a negative error number
appropriately, resolves this issue.

Link: http://lkml.kernel.org/r/20201012042404.2508-1-anant.thazhemadam@gmail.com
Reported-by: syzbot+75d51fe5bf4ebe988518@syzkaller.appspotmail.com
Tested-by: syzbot+75d51fe5bf4ebe988518@syzkaller.appspotmail.com
Signed-off-by: Anant Thazhemadam <anant.thazhemadam@gmail.com>
Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>
2020-10-12 10:05:47 +02:00
..
client.c net: 9p: kerneldoc fixes 2020-07-13 17:20:39 -07:00
error.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 188 2019-05-30 11:29:21 -07:00
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Makefile 9p: Remove p9_idpool 2018-08-29 13:39:57 +09:00
mod.c net: Add MODULE_DESCRIPTION entries to network modules 2020-06-20 21:33:57 -07:00
protocol.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 188 2019-05-30 11:29:21 -07:00
protocol.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 188 2019-05-30 11:29:21 -07:00
trans_common.c net/9p: include trans_common.h to fix missing prototype warning. 2018-11-20 15:04:16 +09:00
trans_common.h net/9p: remove (now-)unused helpers 2015-04-11 22:28:29 -04:00
trans_fd.c net: 9p: initialize sun_server.sun_path to have addr's value only when addr is valid 2020-10-12 10:05:47 +02:00
trans_rdma.c net: 9p: kerneldoc fixes 2020-07-13 17:20:39 -07:00
trans_virtio.c 9p pull request for inclusion in 5.13 2019-07-12 17:31:19 -07:00
trans_xen.c 9p/xen: Fix format argument warning 2020-10-09 10:23:29 +02:00