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| author | Faicker Mo <faicker.mo@gmail.com> | 2026-05-11 22:05:51 +0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-05-13 19:01:03 -0700 |
| commit | b84c5632c7b31f8910167075a8128cfb9e50fcfe (patch) | |
| tree | 93f8348aed93e8d2921a14468aeed5b511d6eb33 /tools/perf/scripts/python/syscall-counts.py | |
| parent | 9a390d34d55cb4ecbca4981c660dd95440827c70 (diff) | |
| download | linux-b84c5632c7b31f8910167075a8128cfb9e50fcfe.tar.gz linux-b84c5632c7b31f8910167075a8128cfb9e50fcfe.zip | |
net: net_failover: Fix the deadlock in slave register
There is netdev_lock_ops() before the NETDEV_REGISTER notifier
in register_netdevice(), so use the non-locking functions
in net_failover_slave_register().
failover_slave_register() in failover_existing_slave_register() adds lock
and unlock ops too.
Call Trace:
<TASK>
__schedule+0x30d/0x7a0
schedule+0x27/0x90
schedule_preempt_disabled+0x15/0x30
__mutex_lock.constprop.0+0x538/0x9e0
__mutex_lock_slowpath+0x13/0x20
mutex_lock+0x3b/0x50
dev_set_mtu+0x40/0xe0
net_failover_slave_register+0x24/0x280
failover_slave_register+0x103/0x1b0
failover_event+0x15e/0x210
? dropmon_net_event+0xac/0xe0
notifier_call_chain+0x5e/0xe0
raw_notifier_call_chain+0x16/0x30
call_netdevice_notifiers_info+0x52/0xa0
register_netdevice+0x5f4/0x7c0
register_netdev+0x1e/0x40
_mlx5e_probe+0xe2/0x370 [mlx5_core]
mlx5e_probe+0x59/0x70 [mlx5_core]
? __pfx_mlx5e_probe+0x10/0x10 [mlx5_core]
Fixes: 4c975fd70002 ("net: hold instance lock during NETDEV_REGISTER/UP")
Signed-off-by: Faicker Mo <faicker.mo@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/syscall-counts.py')
0 files changed, 0 insertions, 0 deletions