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| Filename | Latest commit message | Latest commit date |
|---|---|---|
bd7106a600
[ Upstream commit f67376d801499f4fa0838c18c1efcad8840e550d ]
There is a null-ptr-deref when mount.cifs over rdma:
BUG: KASAN: null-ptr-deref in rxe_qp_do_cleanup+0x2f3/0x360 [rdma_rxe]
Read of size 8 at addr 0000000000000018 by task mount.cifs/3046
CPU: 2 PID: 3046 Comm: mount.cifs Not tainted 6.1.0-rc5+ #62
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc3
Call Trace:
<TASK>
dump_stack_lvl+0x34/0x44
kasan_report+0xad/0x130
rxe_qp_do_cleanup+0x2f3/0x360 [rdma_rxe]
execute_in_process_context+0x25/0x90
__rxe_cleanup+0x101/0x1d0 [rdma_rxe]
rxe_create_qp+0x16a/0x180 [rdma_rxe]
create_qp.part.0+0x27d/0x340
ib_create_qp_kernel+0x73/0x160
rdma_create_qp+0x100/0x230
_smbd_get_connection+0x752/0x20f0
smbd_get_connection+0x21/0x40
cifs_get_tcp_session+0x8ef/0xda0
mount_get_conns+0x60/0x750
cifs_mount+0x103/0xd00
cifs_smb3_do_mount+0x1dd/0xcb0
smb3_get_tree+0x1d5/0x300
vfs_get_tree+0x41/0xf0
path_mount+0x9b3/0xdd0
__x64_sys_mount+0x190/0x1d0
do_syscall_64+0x35/0x80
entry_SYSCALL_64_after_hwframe+0x46/0xb0
The root cause of the issue is the socket create failed in
rxe_qp_init_req().
So move the reset rxe_qp_do_cleanup() after the NULL ptr check.
Fixes:
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| crypto | ||
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| init | ||
| ipc | ||
| kernel | ||
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| mm | ||
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.