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linux/net/can
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Oliver Hartkopp c35636e91e can: bcm: fix locking for bcm_op runtime updates 
Commit c2aba69d0c ("can: bcm: add locking for bcm_op runtime updates")
added a locking for some variables that can be modified at runtime when
updating the sending bcm_op with a new TX_SETUP command in bcm_tx_setup().

Usually the RX_SETUP only handles and filters incoming traffic with one
exception: When the RX_RTR_FRAME flag is set a predefined CAN frame is
sent when a specific RTR frame is received. Therefore the rx bcm_op uses
bcm_can_tx() which uses the bcm_tx_lock that was only initialized in
bcm_tx_setup(). Add the missing spin_lock_init() when allocating the
bcm_op in bcm_rx_setup() to handle the RTR case properly.

Fixes: c2aba69d0c ("can: bcm: add locking for bcm_op runtime updates")
Reported-by: syzbot+5b11eccc403dd1cea9f8@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/linux-can/699466e4.a70a0220.2c38d7.00ff.GAE@google.com/
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Link: https://patch.msgid.link/20260218-bcm_spin_lock_init-v1-1-592634c8a5b5@hartkopp.net
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2026-03-02 10:24:40 +01:00
..
j1939 Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
af_can.c Convert more 'alloc_obj' cases to default GFP_KERNEL arguments 2026-02-21 20:03:00 -08:00
af_can.h can: statistics: use atomic access in hot path 2025-03-14 09:47:00 +01:00
bcm.c can: bcm: fix locking for bcm_op runtime updates 2026-03-02 10:24:40 +01:00
gw.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
isotp.c can: remove private CAN skb headroom infrastructure 2026-02-05 11:58:40 +01:00
Kconfig can: add CAN skb extension infrastructure 2026-02-05 11:58:39 +01:00
Makefile can: add ISO 15765-2:2016 transport protocol 2020-10-07 23:18:33 +02:00
proc.c treewide, timers: Rename from_timer() to timer_container_of() 2025-06-08 09:07:37 +02:00
raw.c can: remove private CAN skb headroom infrastructure 2026-02-05 11:58:40 +01:00