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| Filename | Latest commit message | Latest commit date |
|---|---|---|
0cb7b894e4
commit f7c4e3e5d4f6609b4725a97451948ca2e425379a upstream.
syzbot/KCSAN reported data-races in xfrm whenever dev->stats fields
are updated.
It appears all of these updates can happen from multiple cpus.
Adopt SMP safe DEV_STATS_INC() to update dev->stats fields.
BUG: KCSAN: data-race in xfrmi_xmit / xfrmi_xmit
read-write to 0xffff88813726b160 of 8 bytes by task 23986 on cpu 1:
xfrmi_xmit+0x74e/0xb20 net/xfrm/xfrm_interface_core.c:583
__netdev_start_xmit include/linux/netdevice.h:4889 [inline]
netdev_start_xmit include/linux/netdevice.h:4903 [inline]
xmit_one net/core/dev.c:3544 [inline]
dev_hard_start_xmit+0x11b/0x3f0 net/core/dev.c:3560
__dev_queue_xmit+0xeee/0x1de0 net/core/dev.c:4340
dev_queue_xmit include/linux/netdevice.h:3082 [inline]
neigh_connected_output+0x231/0x2a0 net/core/neighbour.c:1581
neigh_output include/net/neighbour.h:542 [inline]
ip_finish_output2+0x74a/0x850 net/ipv4/ip_output.c:230
ip_finish_output+0xf4/0x240 net/ipv4/ip_output.c:318
NF_HOOK_COND include/linux/netfilter.h:293 [inline]
ip_output+0xe5/0x1b0 net/ipv4/ip_output.c:432
dst_output include/net/dst.h:458 [inline]
ip_local_out net/ipv4/ip_output.c:127 [inline]
ip_send_skb+0x72/0xe0 net/ipv4/ip_output.c:1487
udp_send_skb+0x6a4/0x990 net/ipv4/udp.c:963
udp_sendmsg+0x1249/0x12d0 net/ipv4/udp.c:1246
inet_sendmsg+0x63/0x80 net/ipv4/af_inet.c:840
sock_sendmsg_nosec net/socket.c:730 [inline]
sock_sendmsg net/socket.c:753 [inline]
____sys_sendmsg+0x37c/0x4d0 net/socket.c:2540
___sys_sendmsg net/socket.c:2594 [inline]
__sys_sendmmsg+0x269/0x500 net/socket.c:2680
__do_sys_sendmmsg net/socket.c:2709 [inline]
__se_sys_sendmmsg net/socket.c:2706 [inline]
__x64_sys_sendmmsg+0x57/0x60 net/socket.c:2706
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
read-write to 0xffff88813726b160 of 8 bytes by task 23987 on cpu 0:
xfrmi_xmit+0x74e/0xb20 net/xfrm/xfrm_interface_core.c:583
__netdev_start_xmit include/linux/netdevice.h:4889 [inline]
netdev_start_xmit include/linux/netdevice.h:4903 [inline]
xmit_one net/core/dev.c:3544 [inline]
dev_hard_start_xmit+0x11b/0x3f0 net/core/dev.c:3560
__dev_queue_xmit+0xeee/0x1de0 net/core/dev.c:4340
dev_queue_xmit include/linux/netdevice.h:3082 [inline]
neigh_connected_output+0x231/0x2a0 net/core/neighbour.c:1581
neigh_output include/net/neighbour.h:542 [inline]
ip_finish_output2+0x74a/0x850 net/ipv4/ip_output.c:230
ip_finish_output+0xf4/0x240 net/ipv4/ip_output.c:318
NF_HOOK_COND include/linux/netfilter.h:293 [inline]
ip_output+0xe5/0x1b0 net/ipv4/ip_output.c:432
dst_output include/net/dst.h:458 [inline]
ip_local_out net/ipv4/ip_output.c:127 [inline]
ip_send_skb+0x72/0xe0 net/ipv4/ip_output.c:1487
udp_send_skb+0x6a4/0x990 net/ipv4/udp.c:963
udp_sendmsg+0x1249/0x12d0 net/ipv4/udp.c:1246
inet_sendmsg+0x63/0x80 net/ipv4/af_inet.c:840
sock_sendmsg_nosec net/socket.c:730 [inline]
sock_sendmsg net/socket.c:753 [inline]
____sys_sendmsg+0x37c/0x4d0 net/socket.c:2540
___sys_sendmsg net/socket.c:2594 [inline]
__sys_sendmmsg+0x269/0x500 net/socket.c:2680
__do_sys_sendmmsg net/socket.c:2709 [inline]
__se_sys_sendmmsg net/socket.c:2706 [inline]
__x64_sys_sendmmsg+0x57/0x60 net/socket.c:2706
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
value changed: 0x00000000000010d7 -> 0x00000000000010d8
Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 23987 Comm: syz-executor.5 Not tainted 6.5.0-syzkaller-10885-g0468be89b3fa #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Fixes:
|
||
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
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.