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| author | Anastasia Kovaleva <a.kovaleva@yadro.com> | 2024-10-03 13:44:31 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2024-10-05 01:37:15 +0300 |
| commit | 1dae9f1187189bc09ff6d25ca97ead711f7e26f9 (patch) | |
| tree | 9c6475215b5ec84932eddc63a2f3073a6160c568 /drivers/irqchip/irq-sunxi-nmi.c | |
| parent | dda3529d2e84e2ee7b97158c9cdf5e10308f37bc (diff) | |
| download | linux-1dae9f1187189bc09ff6d25ca97ead711f7e26f9.tar.xz | |
net: Fix an unsafe loop on the list
The kernel may crash when deleting a genetlink family if there are still
listeners for that family:
Oops: Kernel access of bad area, sig: 11 [#1]
...
NIP [c000000000c080bc] netlink_update_socket_mc+0x3c/0xc0
LR [c000000000c0f764] __netlink_clear_multicast_users+0x74/0xc0
Call Trace:
__netlink_clear_multicast_users+0x74/0xc0
genl_unregister_family+0xd4/0x2d0
Change the unsafe loop on the list to a safe one, because inside the
loop there is an element removal from this list.
Fixes: b8273570f802 ("genetlink: fix netns vs. netlink table locking (2)")
Cc: stable@vger.kernel.org
Signed-off-by: Anastasia Kovaleva <a.kovaleva@yadro.com>
Reviewed-by: Dmitry Bogdanov <d.bogdanov@yadro.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://patch.msgid.link/20241003104431.12391-1-a.kovaleva@yadro.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/irqchip/irq-sunxi-nmi.c')
0 files changed, 0 insertions, 0 deletions