summaryrefslogtreecommitdiff
path: root/net/rxrpc/peer_object.c
diff options
context:
space:
mode:
authorJon Cooper <jcooper@solarflare.com>2017-02-08 16:51:18 +0000
committerDavid S. Miller <davem@davemloft.net>2017-02-09 16:47:53 -0500
commit8a531400623c52b09bc3b718e9a6142eb60a11a7 (patch)
tree69c112ee46b2abd486bc2c5c9d79d910f8533ba3 /net/rxrpc/peer_object.c
parentda50ae2eae96e00e0188b24014efc10161e60925 (diff)
sfc: harden driver against MC resets during initial probe
This is mainly to prepare for a future overlay networking patch that could cause an MC reset at probe time if the UDP tunnel port list is set immediately upon driver load. Signed-off-by: Edward Cree <ecree@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/rxrpc/peer_object.c')
0 files changed, 0 insertions, 0 deletions
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2025-01-27 21:08:36 +0000
4/0x120 online_store+0xb4/0xc0 dev_attr_store+0x68/0xa0 sysfs_kf_write+0x80/0xb0 kernfs_fop_write+0x17c/0x250 __vfs_write+0x6c/0x1e0 vfs_write+0xd0/0x270 SyS_write+0x6c/0x110 system_call+0x38/0xe0 Examination of the queue showed a single reference (no PERCPU_COUNT_BIAS, and __PERCPU_REF_DEAD, __PERCPU_REF_ATOMIC set) and no requests. However, conditions at the time of the race are count of PERCPU_COUNT_BIAS + 0 and __PERCPU_REF_DEAD and __PERCPU_REF_ATOMIC set. The fix is to make the tryget routines use an actual boolean internally instead of the atomic long result truncated to a int. Fixes: e625305b3907 percpu-refcount: make percpu_ref based on longs instead of ints Link: https://bugzilla.kernel.org/show_bug.cgi?id=190751 Signed-off-by: Douglas Miller <dougmill@linux.vnet.ibm.com> Reviewed-by: Jens Axboe <axboe@fb.com> Signed-off-by: Tejun Heo <tj@kernel.org> Fixes: e625305b3907 ("percpu-refcount: make percpu_ref based on longs instead of ints") Cc: stable@vger.kernel.org # v3.18+
Diffstat (limited to 'include/uapi/mtd')