Revision 580e4273d7a883ececfefa692c1f96bdbacb99b5 authored by Cong Wang on 02 October 2020, 19:13:34 UTC, committed by David S. Miller on 04 October 2020, 21:53:06 UTC
Although we take RTNL on dump path, it is possible to
skip RTNL on insertion path. So the following race condition
is possible:
rtnl_lock() // no rtnl lock
mutex_lock(&idrinfo->lock);
// insert ERR_PTR(-EBUSY)
mutex_unlock(&idrinfo->lock);
tc_dump_action()
rtnl_unlock()
So we have to skip those temporary -EBUSY entries on dump path
too.
Reported-and-tested-by: syzbot+b47bc4f247856fb4d9e1@syzkaller.appspotmail.com
Fixes: 0fedc63fadf0 ("net_sched: commit action insertions together")
Cc: Vlad Buslov <vladbu@mellanox.com>
Cc: Jamal Hadi Salim <jhs@mojatatu.com>
Cc: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
1 parent 9a9e774
Kconfig
menuconfig MTD_HYPERBUS
tristate "HyperBus support"
depends on HAS_IOMEM
select MTD_CFI
select MTD_MAP_BANK_WIDTH_2
select MTD_CFI_AMDSTD
select MTD_COMPLEX_MAPPINGS
help
This is the framework for the HyperBus which can be used by
the HyperBus Controller driver to communicate with
HyperFlash. See Cypress HyperBus specification for more
details
if MTD_HYPERBUS
config HBMC_AM654
tristate "HyperBus controller driver for AM65x SoC"
depends on ARM64 || COMPILE_TEST
select MULTIPLEXER
imply MUX_MMIO
help
This is the driver for HyperBus controller on TI's AM65x and
other SoCs
endif # MTD_HYPERBUS
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