Re: [syzbot] [wireless?] BUG: sleeping function called from invalid context in wext_netdev_notifier_call

[Johannes Berg]

On Wed, 2024-12-11 at 20:41 -0800, syzbot wrote:
> CPU: 1 UID: 0 PID: 12894 Comm: kworker/u8:18 Not tainted 6.13.0-rc1-syzkaller-00183-g4c49f38e20a5 #0
> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
> Workqueue: bond0 bond_mii_monitor
> Call Trace:
>  <TASK>
>  __dump_stack lib/dump_stack.c:94 [inline]
>  dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
>  __might_resched+0x5d4/0x780 kernel/sched/core.c:8758
>  down_read+0x8e/0xa40 kernel/locking/rwsem.c:1523
>  wireless_nlevent_flush net/wireless/wext-core.c:351 [inline]
>  wext_netdev_notifier_call+0x1f/0x120 net/wireless/wext-core.c:371
>  notifier_call_chain+0x1a5/0x3f0 kernel/notifier.c:85
>  netdev_state_change+0x11f/0x1a0 net/core/dev.c:1378
>  linkwatch_do_dev+0x112/0x170 net/core/link_watch.c:182
>  ethtool_op_get_link+0x15/0x60 net/ethtool/ioctl.c:62
>  bond_check_dev_link+0x1f1/0x3f0 drivers/net/bonding/bond_main.c:873
>  bond_miimon_inspect drivers/net/bonding/bond_main.c:2740 [inline]
>  bond_mii_monitor+0x49a/0x3170 drivers/net/bonding/bond_main.c:2962

Yeah this isn't new. I thought we were going to just squash this with

https://lore.kernel.org/netdev/2730097.1721581672@famine/

Whatever came of that?

johannes