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- C 98.2%
- Assembly 1%
- Makefile 0.3%
- Shell 0.2%
- Python 0.1%
| Filename | Latest commit message | Latest commit date |
|---|---|---|
a6cd761328
[ Upstream commit 4179b00c04d18ea7013f68d578d80f3c9d13150a ]
IP_ECN_decapsulate() and IP6_ECN_decapsulate() assume
IP header is already pulled.
geneve does not ensure this yet.
Fixing this generically in IP_ECN_decapsulate() and
IP6_ECN_decapsulate() is not possible, since callers
pass a pointer that might be freed by pskb_may_pull()
syzbot reported :
BUG: KMSAN: uninit-value in __INET_ECN_decapsulate include/net/inet_ecn.h:238 [inline]
BUG: KMSAN: uninit-value in INET_ECN_decapsulate+0x345/0x1db0 include/net/inet_ecn.h:260
CPU: 1 PID: 8941 Comm: syz-executor.0 Not tainted 5.10.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x21c/0x280 lib/dump_stack.c:118
kmsan_report+0xf7/0x1e0 mm/kmsan/kmsan_report.c:118
__msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197
__INET_ECN_decapsulate include/net/inet_ecn.h:238 [inline]
INET_ECN_decapsulate+0x345/0x1db0 include/net/inet_ecn.h:260
geneve_rx+0x2103/0x2980 include/net/inet_ecn.h:306
geneve_udp_encap_recv+0x105c/0x1340 drivers/net/geneve.c:377
udp_queue_rcv_one_skb+0x193a/0x1af0 net/ipv4/udp.c:2093
udp_queue_rcv_skb+0x282/0x1050 net/ipv4/udp.c:2167
udp_unicast_rcv_skb net/ipv4/udp.c:2325 [inline]
__udp4_lib_rcv+0x399d/0x5880 net/ipv4/udp.c:2394
udp_rcv+0x5c/0x70 net/ipv4/udp.c:2564
ip_protocol_deliver_rcu+0x572/0xc50 net/ipv4/ip_input.c:204
ip_local_deliver_finish net/ipv4/ip_input.c:231 [inline]
NF_HOOK include/linux/netfilter.h:301 [inline]
ip_local_deliver+0x583/0x8d0 net/ipv4/ip_input.c:252
dst_input include/net/dst.h:449 [inline]
ip_rcv_finish net/ipv4/ip_input.c:428 [inline]
NF_HOOK include/linux/netfilter.h:301 [inline]
ip_rcv+0x5c3/0x840 net/ipv4/ip_input.c:539
__netif_receive_skb_one_core net/core/dev.c:5315 [inline]
__netif_receive_skb+0x1ec/0x640 net/core/dev.c:5429
process_backlog+0x523/0xc10 net/core/dev.c:6319
napi_poll+0x420/0x1010 net/core/dev.c:6763
net_rx_action+0x35c/0xd40 net/core/dev.c:6833
__do_softirq+0x1a9/0x6fa kernel/softirq.c:298
asm_call_irq_on_stack+0xf/0x20
</IRQ>
__run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
do_softirq_own_stack+0x6e/0x90 arch/x86/kernel/irq_64.c:77
do_softirq kernel/softirq.c:343 [inline]
__local_bh_enable_ip+0x184/0x1d0 kernel/softirq.c:195
local_bh_enable+0x36/0x40 include/linux/bottom_half.h:32
rcu_read_unlock_bh include/linux/rcupdate.h:730 [inline]
__dev_queue_xmit+0x3a9b/0x4520 net/core/dev.c:4167
dev_queue_xmit+0x4b/0x60 net/core/dev.c:4173
packet_snd net/packet/af_packet.c:2992 [inline]
packet_sendmsg+0x86f9/0x99d0 net/packet/af_packet.c:3017
sock_sendmsg_nosec net/socket.c:651 [inline]
sock_sendmsg net/socket.c:671 [inline]
__sys_sendto+0x9dc/0xc80 net/socket.c:1992
__do_sys_sendto net/socket.c:2004 [inline]
__se_sys_sendto+0x107/0x130 net/socket.c:2000
__x64_sys_sendto+0x6e/0x90 net/socket.c:2000
do_syscall_64+0x9f/0x140 arch/x86/entry/common.c:48
entry_SYSCALL_64_after_hwframe+0x44/0xa9
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.