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(parent: 5b9346b) | patch
sch_netem: fix a divide by zero in tabledist()
authorEric Dumazet <edumazet@google.com>
Wed, 18 Sep 2019 15:05:39 +0000 (08:05 -0700)
committerJakub Kicinski <jakub.kicinski@netronome.com>
Sat, 21 Sep 2019 02:12:22 +0000 (19:12 -0700)
commitbf58239c1baa1914bf0a50401a77c5a5a0788c84
tree240877850aa857e1f58e6a4be373c2ecee883f20tree | snapshot
parent5b9346b044aa815f703b5c19f567ca42b01e71f9commit | diff
sch_netem: fix a divide by zero in tabledist()

syzbot managed to crash the kernel in tabledist() loading
an empty distribution table.

t = dist->table[rnd % dist->size];

Simply return an error when such load is attempted.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
net/sched/sch_netem.c diff | blob | history
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