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| author | Davide Caratti <[email protected]> | 2025-06-04 16:06:05 +0000 |
|---|---|---|
| committer | Marc Kleine-Budde <[email protected]> | 2025-06-10 08:23:56 +0000 |
| commit | 81807451c2a6af59bbc58adfd0da69870c30d4ab (patch) | |
| tree | a5f1ec7a866594dbd3bd5b18a63451072d419994 /drivers/usb/cdns3/cdns3-plat.c | |
| parent | can: add drop reasons in the receive path of AF_CAN (diff) | |
| download | kernel-81807451c2a6af59bbc58adfd0da69870c30d4ab.tar.gz kernel-81807451c2a6af59bbc58adfd0da69870c30d4ab.zip | |
can: add drop reasons in CAN protocols receive path
sock_queue_rcv_skb() can fail because of lack of memory resources: use
drop reasons and pass the receiving socket to the tracepoint, so that
it's possible to better locate/debug such events.
Tested with:
| # modprobe vcan echo=1
| # ip link add name vcan2 type vcan
| # ip link set dev vcan2 up
| # ./netlayer/tst-proc 1 &
| # bg
| # while true ; do perf record -e skb:kfree_skb -aR -- \
| > ./raw/tst-raw-sendto vcan2 ; perf script ; done
| [...]
| tst-raw-sendto 10942 [000] 506428.431856: skb:kfree_skb: skbaddr=0xffff97cec38b4200 rx_sk=0xffff97cf0f75a800 protocol=12 location=raw_rcv+0x20e reason: SOCKET_RCVBUF
Signed-off-by: Davide Caratti <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Marc Kleine-Budde <[email protected]>
Diffstat (limited to 'drivers/usb/cdns3/cdns3-plat.c')
0 files changed, 0 insertions, 0 deletions