ice: fix memory leak of aRFS after resuming from suspend
In ice_suspend(), ice_clear_interrupt_scheme() is called, and then
irq_free_descs() will be eventually called to free irq and its descriptor.
In ice_resume(), ice_init_interrupt_scheme() is called to allocate new
irqs. However, in ice_rebuild_arfs(), struct irq_glue and struct cpu_rmap
maybe cannot be freed, if the irqs that released in ice_suspend() were
reassigned to other devices, which makes irq descriptor's affinity_notify
lost.
So call ice_free_cpu_rx_rmap() before ice_clear_interrupt_scheme(), which
can make sure all irq_glue and cpu_rmap can be correctly released before
corresponding irq and descriptor are released.
Fix the following memory leak.
unreferenced object 0xffff95bd951afc00 (size 512):
comm "kworker/0:1", pid 134, jiffies
4294684283 (age 13051.958s)
hex dump (first 32 bytes):
18 00 00 00 18 00 18 00 70 fc 1a 95 bd 95 ff ff ........p.......
00 00 ff ff 01 00 ff ff 02 00 ff ff 03 00 ff ff ................
backtrace:
[<
0000000072e4b914>] __kmalloc+0x336/0x540
[<
0000000054642a87>] alloc_cpu_rmap+0x3b/0xb0
[<
00000000f220deec>] ice_set_cpu_rx_rmap+0x6a/0x110 [ice]
[<
000000002370a632>] ice_probe+0x941/0x1180 [ice]
[<
00000000d692edba>] local_pci_probe+0x47/0xa0
[<
00000000503934f0>] work_for_cpu_fn+0x1a/0x30
[<
00000000555a9e4a>] process_one_work+0x1dd/0x410
[<
000000002c4b414a>] worker_thread+0x221/0x3f0
[<
00000000bb2b556b>] kthread+0x14c/0x170
[<
00000000ad2cf1cd>] ret_from_fork+0x1f/0x30
unreferenced object 0xffff95bd81b0a2a0 (size 96):
comm "kworker/0:1", pid 134, jiffies
4294684283 (age 13051.958s)
hex dump (first 32 bytes):
38 00 00 00 01 00 00 00 e0 ff ff ff 0f 00 00 00 8...............
b0 a2 b0 81 bd 95 ff ff b0 a2 b0 81 bd 95 ff ff ................
backtrace:
[<
00000000582dd5c5>] kmem_cache_alloc_trace+0x31f/0x4c0
[<
000000002659850d>] irq_cpu_rmap_add+0x25/0xe0
[<
00000000495a3055>] ice_set_cpu_rx_rmap+0xb4/0x110 [ice]
[<
000000002370a632>] ice_probe+0x941/0x1180 [ice]
[<
00000000d692edba>] local_pci_probe+0x47/0xa0
[<
00000000503934f0>] work_for_cpu_fn+0x1a/0x30
[<
00000000555a9e4a>] process_one_work+0x1dd/0x410
[<
000000002c4b414a>] worker_thread+0x221/0x3f0
[<
00000000bb2b556b>] kthread+0x14c/0x170
[<
00000000ad2cf1cd>] ret_from_fork+0x1f/0x30
Fixes:
769c500dcc1e ("ice: Add advanced power mgmt for WoL")
Signed-off-by: Yongxin Liu <yongxin.liu@windriver.com>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>