======================================
| make[1]: Leaving directory '/home/virtme/testing-22/tools/testing/selftests/drivers/net/hw'
| make: Leaving directory '/home/virtme/testing-22/tools/testing/selftests'
| xx__-> echo $?
| 0
| xx__-> echo scan > /sys/kernel/debug/kmemleak && cat /sys/kernel/debug/kmemleak
unreferenced object 0xffff88802f508dc0 (size 216):
comm "softirq", pid 0, jiffies 4294941500
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00 20 eb 08 80 88 ff ff 00 00 00 00 00 00 00 00  . ..............
backtrace (crc cc6a1e33):
kmem_cache_alloc_bulk_noprof (./include/linux/kmemleak.h:43 mm/slub.c:4155 mm/slub.c:5375 mm/slub.c:5355) 
napi_skb_cache_get (net/core/skbuff.c:281 (discriminator 2)) 
__alloc_skb (net/core/skbuff.c:656) 
napi_alloc_skb (net/core/skbuff.c:810) 
page_to_skb (drivers/net/virtio_net.c:840) 
receive_mergeable (drivers/net/virtio_net.c:2430) 
receive_buf (drivers/net/virtio_net.c:2568) 
virtnet_receive (drivers/net/virtio_net.c:2927 drivers/net/virtio_net.c:2950) 
virtnet_poll (drivers/net/virtio_net.c:3046) 
__napi_poll.constprop.0 (net/core/dev.c:7331) 
net_rx_action (net/core/dev.c:7395 net/core/dev.c:7517) 
handle_softirqs (kernel/softirq.c:579) 
run_ksoftirqd (kernel/softirq.c:436 kernel/softirq.c:969 kernel/softirq.c:960) 
smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
kthread (kernel/kthread.c:464) 
ret_from_fork (arch/x86/kernel/process.c:153) 
unreferenced object 0xffff888030bb3140 (size 640):
comm "softirq", pid 0, jiffies 4294941527
hex dump (first 32 bytes):
6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b  kkkkkkkkkkkkkkkk
6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b  kkkkkkkkkkkkkkkk
backtrace (crc d842f1f2):
kmem_cache_alloc_node_noprof (./include/linux/kmemleak.h:43 mm/slub.c:4155 mm/slub.c:4200 mm/slub.c:4252) 
kmalloc_reserve (net/core/skbuff.c:580 (discriminator 2)) 
__alloc_skb (net/core/skbuff.c:668) 
napi_alloc_skb (net/core/skbuff.c:810) 
page_to_skb (drivers/net/virtio_net.c:840) 
receive_mergeable (drivers/net/virtio_net.c:2430) 
receive_buf (drivers/net/virtio_net.c:2568) 
virtnet_receive (drivers/net/virtio_net.c:2927 drivers/net/virtio_net.c:2950) 
virtnet_poll (drivers/net/virtio_net.c:3046) 
__napi_poll.constprop.0 (net/core/dev.c:7331) 
net_rx_action (net/core/dev.c:7395 net/core/dev.c:7517) 
handle_softirqs (kernel/softirq.c:579) 
run_ksoftirqd (kernel/softirq.c:436 kernel/softirq.c:969 kernel/softirq.c:960) 
smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
kthread (kernel/kthread.c:464) 
ret_from_fork (arch/x86/kernel/process.c:153) 
| run_ksoftirqd (kernel/softirq.c:436 kernel/softirq.c:969 kernel/softirq.c:960) 
| smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
| kthread (kernel/kthread.c:464) 
| ret_from_fork (arch/x86/kernel/process.c:153) 
| xx__-> echo scan > /sys/kernel/debug/kmemleak && cat /sys/kernel/debug/kmemleak
unreferenced object 0xffff88802f508dc0 (size 216):
comm "softirq", pid 0, jiffies 4294941500
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
00 20 eb 08 80 88 ff ff 00 00 00 00 00 00 00 00  . ..............
backtrace (crc cc6a1e33):
kmem_cache_alloc_bulk_noprof (./include/linux/kmemleak.h:43 mm/slub.c:4155 mm/slub.c:5375 mm/slub.c:5355) 
napi_skb_cache_get (net/core/skbuff.c:281 (discriminator 2)) 
__alloc_skb (net/core/skbuff.c:656) 
napi_alloc_skb (net/core/skbuff.c:810) 
page_to_skb (drivers/net/virtio_net.c:840) 
receive_mergeable (drivers/net/virtio_net.c:2430) 
receive_buf (drivers/net/virtio_net.c:2568) 
virtnet_receive (drivers/net/virtio_net.c:2927 drivers/net/virtio_net.c:2950) 
virtnet_poll (drivers/net/virtio_net.c:3046) 
__napi_poll.constprop.0 (net/core/dev.c:7331) 
net_rx_action (net/core/dev.c:7395 net/core/dev.c:7517) 
handle_softirqs (kernel/softirq.c:579) 
run_ksoftirqd (kernel/softirq.c:436 kernel/softirq.c:969 kernel/softirq.c:960) 
smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
kthread (kernel/kthread.c:464) 
ret_from_fork (arch/x86/kernel/process.c:153) 
unreferenced object 0xffff888030bb3140 (size 640):
comm "softirq", pid 0, jiffies 4294941527
hex dump (first 32 bytes):
6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b  kkkkkkkkkkkkkkkk
6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b 6b  kkkkkkkkkkkkkkkk
backtrace (crc d842f1f2):
kmem_cache_alloc_node_noprof (./include/linux/kmemleak.h:43 mm/slub.c:4155 mm/slub.c:4200 mm/slub.c:4252) 
kmalloc_reserve (net/core/skbuff.c:580 (discriminator 2)) 
__alloc_skb (net/core/skbuff.c:668) 
napi_alloc_skb (net/core/skbuff.c:810) 
page_to_skb (drivers/net/virtio_net.c:840) 
receive_mergeable (drivers/net/virtio_net.c:2430) 
receive_buf (drivers/net/virtio_net.c:2568) 
virtnet_receive (drivers/net/virtio_net.c:2927 drivers/net/virtio_net.c:2950) 
virtnet_poll (drivers/net/virtio_net.c:3046) 
__napi_poll.constprop.0 (net/core/dev.c:7331) 
net_rx_action (net/core/dev.c:7395 net/core/dev.c:7517) 
handle_softirqs (kernel/softirq.c:579) 
run_ksoftirqd (kernel/softirq.c:436 kernel/softirq.c:969 kernel/softirq.c:960) 
smpboot_thread_fn (kernel/smpboot.c:164 (discriminator 3)) 
kthread (kernel/kthread.c:464) 


Finger prints:
run_ksoftirqd:smpboot_thread_fn:kthread:ret_from_fork:kmem_cache_alloc_bulk_noprof
kmem_cache_alloc_bulk_noprof:napi_skb_cache_get:__alloc_skb:napi_alloc_skb:page_to_skb