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234e615bfe
The ice driver calls udp_tunnel_get_rx_info() during ice_open_internal().
This is redundant because UDP tunnel RX offload state is preserved
across device down/up cycles. The udp_tunnel core handles
synchronization automatically when required.
Furthermore, recent changes in the udp_tunnel infrastructure require
querying RX info while holding the udp_tunnel lock. Calling it
directly from the ndo_open path violates this requirement,
triggering the following lockdep warning:
Call Trace:
<TASK>
ice_open_internal+0x253/0x350 [ice]
__udp_tunnel_nic_assert_locked+0x86/0xb0 [udp_tunnel]
__dev_open+0x2f5/0x880
__dev_change_flags+0x44c/0x660
netif_change_flags+0x80/0x160
devinet_ioctl+0xd21/0x15f0
inet_ioctl+0x311/0x350
sock_ioctl+0x114/0x220
__x64_sys_ioctl+0x131/0x1a0
...
</TASK>
Remove the redundant and unsafe call to udp_tunnel_get_rx_info() from
ice_open_internal() to resolve the locking violation
Fixes: 1ead750109 ("udp_tunnel: remove rtnl_lock dependency")
Signed-off-by: Mohammad Heib <mheib@redhat.com>
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Tested-by: Rinitha S <sx.rinitha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Linux kernel ============ The Linux kernel is the core of any Linux operating system. It manages hardware, system resources, and provides the fundamental services for all other software. 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