net: igmp: increase size of mr_ifc_count

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[ Upstream commit b69dd5b378 ]

Some arches support cmpxchg() on 4-byte and 8-byte only.
Increase mr_ifc_count width to 32bit to fix this problem.

Fixes: 4a2b285e7e ("net: igmp: fix data-race in igmp_ifc_timer_expire()")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20210811195715.3684218-1-eric.dumazet@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Eric Dumazet 2021-08-11 12:57:15 -07:00 • committed by Greg Kroah-Hartman

parent 696afe28dc

commit 4344440d91

2 changed files with 2 additions and 2 deletions

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include/linux/inetdevice.h

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2

net/ipv4/igmp.c

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