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| Filename | Latest commit message | Latest commit date |
|---|---|---|
2497307356
commit c23a9fd209bc6f8c1fa6ee303fdf037d784a1627 upstream.
Two patches listed below removed ctnetlink_dump_helpinfo call from under
rcu_read_lock. Now its rcu_dereference generates following warning:
=============================
WARNING: suspicious RCU usage
5.13.0+ #5 Not tainted
-----------------------------
net/netfilter/nf_conntrack_netlink.c:221 suspicious rcu_dereference_check() usage!
other info that might help us debug this:
rcu_scheduler_active = 2, debug_locks = 1
stack backtrace:
CPU: 1 PID: 2251 Comm: conntrack Not tainted 5.13.0+ #5
Call Trace:
dump_stack+0x7f/0xa1
ctnetlink_dump_helpinfo+0x134/0x150 [nf_conntrack_netlink]
ctnetlink_fill_info+0x2c2/0x390 [nf_conntrack_netlink]
ctnetlink_dump_table+0x13f/0x370 [nf_conntrack_netlink]
netlink_dump+0x10c/0x370
__netlink_dump_start+0x1a7/0x260
ctnetlink_get_conntrack+0x1e5/0x250 [nf_conntrack_netlink]
nfnetlink_rcv_msg+0x613/0x993 [nfnetlink]
netlink_rcv_skb+0x50/0x100
nfnetlink_rcv+0x55/0x120 [nfnetlink]
netlink_unicast+0x181/0x260
netlink_sendmsg+0x23f/0x460
sock_sendmsg+0x5b/0x60
__sys_sendto+0xf1/0x160
__x64_sys_sendto+0x24/0x30
do_syscall_64+0x36/0x70
entry_SYSCALL_64_after_hwframe+0x44/0xae
Fixes: 49ca022bccc5 ("netfilter: ctnetlink: don't dump ct extensions of unconfirmed conntracks")
Fixes:
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| 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 | ||
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| COPYING | ||
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| 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.