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linux/include/trace/events
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Eric Dumazet 3308676ec5 tcp: add accessors to read/set tp->snd_cwnd 
[ Upstream commit 4057037535 ]

We had various bugs over the years with code
breaking the assumption that tp->snd_cwnd is greater
than zero.

Lately, syzbot reported the WARN_ON_ONCE(!tp->prior_cwnd) added
in commit 8b8a321ff7 ("tcp: fix zero cwnd in tcp_cwnd_reduction")
can trigger, and without a repro we would have to spend
considerable time finding the bug.

Instead of complaining too late, we want to catch where
and when tp->snd_cwnd is set to an illegal value.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Suggested-by: Yuchung Cheng <ycheng@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Acked-by: Yuchung Cheng <ycheng@google.com>
Link: https://lore.kernel.org/r/20220405233538.947344-1-eric.dumazet@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-06-14 18:36:11 +02:00
..
9p.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
afs.h
afs: Try to avoid taking RCU read lock when checking vnode validity
2021-09-13 09:10:39 +01:00
alarmtimer.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
asoc.h
ASoC: soc-core: tidyup jack.h
2020-11-30 12:54:01 +00:00
avc.h
selinux: add basic filtering for audit trace events
2020-08-21 17:07:29 -04:00
bcache.h
block: remove superfluous param in blk_fill_rwbs()
2021-02-22 06:37:41 -07:00
block.h
blktrace: fix blk_rq_merge documentation
2021-02-22 06:37:41 -07:00
bpf_test_run.h
selftests: bpf: test writable buffers in raw tps
2019-04-26 19:04:19 -07:00
bridge.h
net: bridge: fdb: br_fdb_update can take flags directly
2019-11-01 10:32:43 -07:00
btrfs.h
btrfs: use delalloc_bytes to determine flush amount for shrink_delalloc
2021-08-23 13:19:07 +02:00
cachefiles.h
cachefiles: Fix oops with cachefiles_cull() due to NULL object
2021-10-05 11:22:06 +01:00
cgroup.h
cgroup: Trace event cgroup id fields should be u64
2022-01-27 11:03:23 +01:00
clk.h
clk: Trace clk_set_rate() "range" functions
2020-12-17 01:54:31 -08:00
cma.h
mm, tracing: unify PFN format strings
2021-06-29 10:53:52 -07:00
compaction.h
mm/page_alloc: integrate classzone_idx and high_zoneidx
2020-06-03 20:09:44 -07:00
context_tracking.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
cpuhp.h
treewide: Switch printk users from %pf and %pF to %ps and %pS, respectively
2019-04-09 14:19:06 +02:00
damon.h
mm/damon: add a tracepoint
2021-09-08 11:50:24 -07:00
devfreq.h
PM / devfreq: Add tracepoint for frequency changes
2020-10-26 10:52:37 +09:00
devlink.h
devlink: Add a tracepoint for trap reports
2020-09-30 18:01:26 -07:00
dma_fence.h
treewide: Add missing semicolons to __assign_str uses
2021-06-30 09:19:14 -04:00
erofs.h
erofs: fix up erofs_lookup tracepoint
2021-09-23 23:21:34 +08:00
error_report.h
tracing: add error_report_end trace point
2021-02-26 09:41:02 -08:00
ext4.h
ext4: fix ext4_fc_stats trace point
2022-04-08 14:22:58 +02:00
f2fs.h
f2fs: fix up f2fs_lookup tracepoints
2021-11-25 09:48:31 +01:00
fib6.h
ipv6: Add fib6_type and fib6_flags to fib6_result
2019-04-17 23:11:30 -07:00
fib.h
net: Replace nhc_has_gw with nhc_gw_family
2019-04-08 15:22:40 -07:00
filelock.h
locks: Remove extra "0x" in tracepoint format specifier
2020-09-01 18:09:34 -04:00
filemap.h
mm, tracing: unify PFN format strings
2021-06-29 10:53:52 -07:00
fs_dax.h
Merge tag 'libnvdimm-for-4.15' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
2017-11-17 09:51:57 -08:00
fscache.h
fscache: Use refcount_t for the cookie refcount instead of atomic_t
2021-08-27 13:34:03 +01:00
fsi_master_aspeed.h
fsi: aspeed: Add trace points
2019-11-08 11:28:20 +01:00
fsi_master_ast_cf.h
fsi: master-ast-cf: Add new FSI master using Aspeed ColdFire
2018-07-23 15:22:52 +10:00
fsi_master_gpio.h
fsi: master-gpio: Add more tracepoints
2018-07-12 12:02:31 +10:00
fsi.h
trace: fsi: Print transfer size unsigned
2019-11-08 11:23:37 +01:00
gpio.h
tracing: stop making gpio tracing configurable
2019-04-08 15:11:48 +02:00
gpu_mem.h
gpu/trace: Minor comment updates for gpu_mem_total tracepoint
2020-05-07 13:32:57 -04:00
host1x.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 1
2019-05-21 11:28:39 +02:00
huge_memory.h
khugepaged: introduce 'max_ptes_shared' tunable
2020-06-03 20:09:46 -07:00
hwmon.h
hwmon: (core) Add trace events to _attr_show/store functions
2018-10-11 20:07:35 -07:00
i2c.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36
2019-05-24 17:27:11 +02:00
ib_mad.h
IB/MAD: Add SMP details to MAD tracing
2019-03-27 15:52:01 -03:00
ib_umad.h
IB/UMAD: Add umad trace points
2019-03-27 15:52:01 -03:00
initcall.h
tracing: initcall: Ordered comparison of function pointers
2018-04-26 15:02:46 -04:00
intel_iommu.h
iommu/vt-d: Add prq_report trace event
2021-06-10 09:06:13 +02:00
intel_ish.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
intel-sst.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
io_uring.h
io_uring: io_uring_complete() trace should take an integer
2021-09-03 16:59:06 -06:00
iocost.h
blk-iocost: Add iocg idle state tracepoint
2020-12-17 07:55:44 -07:00
iommu.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
ipi.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
irq_matrix.h
genirq/matrix: Add tracepoints
2017-09-25 20:38:26 +02:00
irq.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
iscsi.h
scsi: iscsi: Capture iscsi debug messages using tracepoints
2018-12-20 20:03:55 -05:00
jbd2.h
jbd2,ext4: add a shrinker to release checkpointed buffers
2021-06-24 10:54:49 -04:00
kmem.h
mm, tracing: unify PFN format strings
2021-06-29 10:53:52 -07:00
kvm.h
KVM: x86/mmu: Drop trace_kvm_age_page() tracepoint
2021-04-17 08:30:56 -04:00
kyber.h
kyber: avoid q->disk dereferences in trace points
2021-10-15 21:02:57 -06:00
libata.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
lock.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
mce.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
mdio.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
migrate.h
mm/migrate: demote pages during reclaim
2021-09-03 09:58:16 -07:00
mlxsw.h
mlxsw: spectrum_acl: Rename rehash_dis trace
2019-03-31 11:01:23 -07:00
mmap_lock.h
mm: mmap_lock: add tracepoints around lock acquisition
2020-12-15 12:13:41 -08:00
mmap.h
mm: mmap: add trace point of vm_unmapped_area
2020-04-02 09:35:30 -07:00
mmc.h
mmc: core: Fix tracepoint print of blk_addr and blksz
2018-03-15 11:15:22 +01:00
mmflags.h
Merge branch 'akpm' (patches from Andrew)
2021-09-08 12:55:35 -07:00
module.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
mptcp.h
mptcp: dump csum fields in mptcp_dump_mpext
2021-06-18 11:40:11 -07:00
napi.h
tracing: Fix header include guards in trace event headers
2019-07-30 21:49:06 -04:00
nbd.h
nbd: add tracepoints for send/receive timing
2019-04-26 19:04:19 -07:00
neigh.h
neighbor: Add tracepoint to __neigh_create
2019-05-22 17:50:24 -07:00
net_probe_common.h
net: dccp: Add DCCP sendmsg trace event
2018-01-02 14:27:30 -05:00
net.h
net: use %px to print skb address in trace_netif_receive_skb
2021-07-15 10:28:48 -07:00
netfs.h
netfs: Move cookie debug ID to struct netfs_cache_resources
2021-08-25 15:20:25 +01:00
netlink.h
netlink: add tracepoint at NL_SET_ERR_MSG
2021-02-04 18:05:59 -08:00
nilfs2.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
nmi.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
objagg.h
lib: introduce initial implementation of object aggregation manager
2018-11-15 14:43:43 -08:00
oom.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
osnoise.h
tracing: Fix spelling in osnoise tracer "interferences" -> "interference"
2021-06-28 14:12:27 -04:00
page_isolation.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
page_pool.h
mm, tracing: unify PFN format strings
2021-06-29 10:53:52 -07:00
page_ref.h
mm: introduce PAGEFLAGS_MASK to replace ((1UL << NR_PAGEFLAGS) - 1)
2021-09-08 11:50:24 -07:00
pagemap.h
mm, tracing: unify PFN format strings
2021-06-29 10:53:52 -07:00
percpu.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
power_cpu_migrate.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
power.h
PM: QoS: Simplify definitions of CPU latency QoS trace events
2020-02-13 11:26:39 +01:00
preemptirq.h
tracing: Change offset type to s32 in preempt/irq tracepoints
2020-01-03 11:34:37 -05:00
printk.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
pwc.h
media: usb: pwc: Introduce TRACE_EVENTs for pwc_isoc_handler()
2019-01-16 11:15:11 -05:00
pwm.h
pwm: Implement tracing for .get_state() and .apply_state()
2020-01-20 12:28:37 +01:00
qdisc.h
qdisc: add new field for qdisc_enqueue tracepoint
2021-07-27 14:16:38 +01:00
qla.h
scsi: qla2xxx: Suppress two recently introduced compiler warnings
2020-05-19 21:43:01 -04:00
qrtr.h
net: qrtr: Add tracepoint support
2020-04-22 12:55:54 -07:00
rcu.h
rcu/nocb: Unify timers
2021-05-12 12:10:23 -07:00
rdma_core.h
RDMA/core: Add trace points to follow MR allocation
2020-01-07 16:10:53 -04:00
rdma.h
RDMA/core: Move the rdma_show_ib_cm_event() macro
2020-08-24 16:01:47 -03:00
regulator.h
regulator: core: Add regulator bypass trace points
2020-05-29 17:17:02 +01:00
rpcgss.h
treewide: Add missing semicolons to __assign_str uses
2021-06-30 09:19:14 -04:00
rpcrdma.h
xprtrdma: Add an xprtrdma_post_send_err tracepoint
2021-08-09 16:42:18 -04:00
rpm.h
PM-runtime: add tracepoints for usage_count changes
2020-01-13 12:28:29 +01:00
rseq.h
rseq: Introduce restartable sequences system call
2018-06-06 11:58:31 +02:00
rtc.h
rtc: Add tracepoints for RTC system
2018-02-13 21:30:22 +01:00
rxrpc.h
rxrpc: Fix decision on when to generate an IDLE ACK
2022-06-09 10:23:02 +02:00
sched.h
sched/tracing: Remove the redundant 'success' in the sched tracepoint
2021-06-10 11:16:20 -04:00
scmi.h
firmware: arm_scmi: Use signed integer to report transfer status
2020-06-30 14:07:08 +01:00
scsi.h
scsi: core: Kill message byte
2021-05-31 22:48:24 -04:00
sctp.h
sctp: move trace_sctp_probe_path into sctp_outq_sack
2019-12-26 13:06:45 -08:00
signal.h
signal: Distinguish between kernel_siginfo and siginfo
2018-10-03 16:47:43 +02:00
siox.h
siox: add support for tracing
2017-12-19 10:56:24 +01:00
skb.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
smbus.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36
2019-05-24 17:27:11 +02:00
sock.h
net: sock: add trace for socket errors
2021-06-29 11:28:21 -07:00
spi.h
spi: Enable tracing of the SPI setup CS selection
2021-05-26 21:22:13 +01:00
spmi.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
sunrpc.h
SUNRPC: Ensure we flush any closed sockets before xs_xprt_free()
2022-05-18 10:26:57 +02:00
sunvnet.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
swiotlb.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
syscalls.h
syscalls: Remove start and number from syscall_get_arguments() args
2019-04-05 09:26:43 -04:00
target.h
scsi: target: core: Add CONTROL field for trace events
2020-10-02 18:36:19 -04:00
task.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
tcp.h
tcp: add accessors to read/set tp->snd_cwnd
2022-06-14 18:36:11 +02:00
tegra_apb_dma.h
tracing: Fix header include guards in trace event headers
2019-07-30 21:49:06 -04:00
thermal_power_allocator.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
thermal.h
thermal: devfreq_cooling: change tracing function and arguments
2020-12-11 14:10:44 +01:00
thp.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
timer.h
tracing: Fix various typos in comments
2021-03-23 14:08:18 -04:00
tlb.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
udp.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
ufs.h
scsi: ufs: core: Enable power management for wlun
2021-05-10 22:28:20 -04:00
v4l2.h
media: v4l2: abstract timeval handling in v4l2_buffer
2020-01-03 15:43:35 +01:00
vb2.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
vmscan.h
tracing: incorrect isolate_mote_t cast in mm_vmscan_lru_isolate
2022-06-09 10:22:43 +02:00
vsock_virtio_transport_common.h
virtio/vsock: update trace event for SEQPACKET
2021-06-11 13:32:47 -07:00
wbt.h
bdi: use bdi_dev_name() to get device name
2020-05-09 16:07:39 -06:00
workqueue.h
workqueue/tracing: Copy workqueue name to buffer in trace event
2021-03-18 12:57:37 -04:00
writeback.h
trace: replace WB_REASON_FOREIGN_FLUSH with a string
2021-06-10 11:16:20 -04:00
xdp.h
xdp: Extend xdp_redirect_map with broadcast support
2021-05-26 09:46:16 +02:00
xen.h
x86/mm/tlb: Flush remote and local TLBs concurrently
2021-03-06 12:59:10 +01:00