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| author | Eric Dumazet <edumazet@google.com> | 2021-08-11 12:57:15 -0700 |
|---|---|---|
| committer | Sasha Levin <sashal@kernel.org> | 2021-08-26 08:36:39 -0400 |
| commit | ec75ebd1645e3ca57c0d6bf8482c0ad775491703 (patch) | |
| tree | 0da64cecf25abac64b45100968a1b6ab76898267 /net/ipv4/igmp.c | |
| parent | 32b6627fec712fb75fbed272517c74814c00ccfc (diff) | |
| download | linux-stable-ec75ebd1645e3ca57c0d6bf8482c0ad775491703.tar.gz linux-stable-ec75ebd1645e3ca57c0d6bf8482c0ad775491703.tar.bz2 linux-stable-ec75ebd1645e3ca57c0d6bf8482c0ad775491703.zip | |
net: igmp: increase size of mr_ifc_count
[ Upstream commit b69dd5b3780a7298bd893816a09da751bc0636f7 ]
Some arches support cmpxchg() on 4-byte and 8-byte only.
Increase mr_ifc_count width to 32bit to fix this problem.
Fixes: 4a2b285e7e10 ("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>
Diffstat (limited to 'net/ipv4/igmp.c')
| -rw-r--r-- | net/ipv4/igmp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c index 95ec3923083f..dca7fe0ae24a 100644 --- a/net/ipv4/igmp.c +++ b/net/ipv4/igmp.c @@ -807,7 +807,7 @@ static void igmp_gq_timer_expire(struct timer_list *t) static void igmp_ifc_timer_expire(struct timer_list *t) { struct in_device *in_dev = from_timer(in_dev, t, mr_ifc_timer); - u8 mr_ifc_count; + u32 mr_ifc_count; igmpv3_send_cr(in_dev); restart: |