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| author | Eric Dumazet <eric.dumazet@gmail.com> | 2012-05-09 13:29:51 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-05-10 23:10:24 -0400 |
| commit | c57b54684060c8aced64a5b78ff69ff289af97b9 (patch) | |
| tree | 910e52b177da527183ddf4c29ccd90392b3039e3 /kernel/sys_ni.c | |
| parent | 59b9997baba5242997ddc7bd96b1391f5275a5a4 (diff) | |
| download | op-kernel-dev-c57b54684060c8aced64a5b78ff69ff289af97b9.zip op-kernel-dev-c57b54684060c8aced64a5b78ff69ff289af97b9.tar.gz | |
pktgen: fix crash at module unload
commit 7d3d43dab4e9 (net: In unregister_netdevice_notifier unregister
the netdevices.) makes pktgen crashing at module unload.
[ 296.820578] BUG: spinlock bad magic on CPU#6, rmmod/3267
[ 296.820719] lock: ffff880310c38000, .magic: ffff8803, .owner: <none>/-1, .owner_cpu: -1
[ 296.820943] Pid: 3267, comm: rmmod Not tainted 3.4.0-rc5+ #254
[ 296.821079] Call Trace:
[ 296.821211] [<ffffffff8168a715>] spin_dump+0x8a/0x8f
[ 296.821345] [<ffffffff8168a73b>] spin_bug+0x21/0x26
[ 296.821507] [<ffffffff812b4741>] do_raw_spin_lock+0x131/0x140
[ 296.821648] [<ffffffff8169188e>] _raw_spin_lock+0x1e/0x20
[ 296.821786] [<ffffffffa00cc0fd>] __pktgen_NN_threads+0x4d/0x140 [pktgen]
[ 296.821928] [<ffffffffa00ccf8d>] pktgen_device_event+0x10d/0x1e0 [pktgen]
[ 296.822073] [<ffffffff8154ed4f>] unregister_netdevice_notifier+0x7f/0x100
[ 296.822216] [<ffffffffa00d2a0b>] pg_cleanup+0x48/0x73 [pktgen]
[ 296.822357] [<ffffffff8109528e>] sys_delete_module+0x17e/0x2a0
[ 296.822502] [<ffffffff81699652>] system_call_fastpath+0x16/0x1b
Hold the pktgen_thread_lock while splicing pktgen_threads, and test
pktgen_exiting in pktgen_device_event() to make unload faster.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/sys_ni.c')
0 files changed, 0 insertions, 0 deletions
