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931027820e
linux/net/rose
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Eric Dumazet 931027820e net: rose: fix netdev reference changes 
Bernard reported that trying to unload rose module would lead
to infamous messages:

unregistered_netdevice: waiting for rose0 to become free. Usage count = xx

This patch solves the issue, by making sure each socket referring to
a netdevice holds a reference count on it, and properly releases it
in rose_release().

rose_dev_first() is also fixed to take a device reference
before leaving the rcu_read_locked section.

Following patch will add ref_tracker annotations to ease
future bug hunting.

Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Reported-by: Bernard Pidoux <f6bvp@free.fr>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Tested-by: Bernard Pidoux <f6bvp@free.fr>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-08-01 11:59:23 -07:00
..
af_rose.c net: rose: fix netdev reference changes 2022-08-01 11:59:23 -07:00
Makefile treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
rose_dev.c rose: constify dev_addr passing 2021-10-13 09:40:45 -07:00
rose_in.c net: Don't include filter.h from net/sock.h 2021-12-29 08:48:14 -08:00
rose_link.c ax25: constify dev_addr passing 2021-10-13 09:40:45 -07:00
rose_loopback.c rose: Fix Null pointer dereference in rose_send_frame() 2020-11-20 10:04:58 -08:00
rose_out.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rose_route.c net: rose: fix netdev reference changes 2022-08-01 11:59:23 -07:00
rose_subr.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rose_timer.c net: rose: fix UAF bugs caused by timer handler 2022-06-30 11:07:30 +02:00
sysctl_net_rose.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00