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linux-stable/include/trace/events
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Eric Dumazet 5aba0ad44f 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 18:41:22 +02:00
..
9p.h
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afs.h netfs, 9p, afs, ceph: Use folios 2021-11-10 21:16:56 +00:00
alarmtimer.h
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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 block: remove the ->rq_disk field in struct request 2021-11-29 06:41:29 -07:00
bpf_test_run.h
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bridge.h net: bridge: fdb: br_fdb_update can take flags directly 2019-11-01 10:32:43 -07:00
btrfs.h btrfs: pass fs_info to trace_btrfs_transaction_commit 2022-01-03 15:09:47 +01:00
cachefiles.h cachefiles: Fix volume coherency attribute 2022-03-11 10:24:37 -08:00
cgroup.h cgroup: Trace event cgroup id fields should be u64 2021-12-01 07:23:35 -10:00
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: compaction: fix the migration stats in trace_mm_compaction_migratepages() 2022-01-15 16:30:30 +02:00
context_tracking.h
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cpuhp.h
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damon.h mm/damon: hide kernel pointer from tracepoint event 2022-01-15 16:30:33 +02:00
devfreq.h PM / devfreq: Add tracepoint for frequency changes 2020-10-26 10:52:37 +09:00
devlink.h devlink: Reduce struct devlink exposure 2021-10-12 16:29:16 -07:00
dlm.h fs: dlm: trace socket handling 2021-11-02 14:39:20 -05:00
dma_fence.h treewide: Add missing semicolons to __assign_str uses 2021-06-30 09:19:14 -04:00
erofs.h erofs: clean up erofs_map_blocks tracepoints 2021-12-09 10:02:10 +08:00
error_report.h panic: use error_report_end tracepoint on warnings 2022-01-20 08:52:55 +02:00
ext4.h ext4: fix ext4_fc_stats trace point 2022-04-08 13:57:25 +02:00
f2fs.h f2fs: show more DIO information in tracepoint 2021-12-10 15:48:31 -08:00
fib.h
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fib6.h
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filelock.h locks: Remove extra "0x" in tracepoint format specifier 2020-09-01 18:09:34 -04:00
filemap.h filemap: Convert tracing of page cache operations to folio 2022-01-04 13:15:33 -05:00
fs.h NFS: Move generic FS show macros to global header 2021-11-02 12:31:23 -04:00
fs_dax.h
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fscache.h fscache: Add a tracepoint for cookie use/unuse 2022-01-11 22:13:01 +00:00
fsi.h trace: fsi: Print transfer size unsigned 2019-11-08 11:23:37 +01:00
fsi_master_aspeed.h fsi: aspeed: Add trace points 2019-11-08 11:28:20 +01:00
fsi_master_ast_cf.h
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fsi_master_gpio.h
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gpio.h
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gpu_mem.h gpu/trace: Minor comment updates for gpu_mem_total tracepoint 2020-05-07 13:32:57 -04:00
host1x.h
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huge_memory.h khugepaged: introduce 'max_ptes_shared' tunable 2020-06-03 20:09:46 -07:00
hwmon.h
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i2c.h
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ib_mad.h
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ib_umad.h
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initcall.h
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intel-sst.h
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intel_iommu.h iommu/vt-d: Add prq_report trace event 2021-06-10 09:06:13 +02:00
intel_ish.h
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io_uring.h io_uring: dump sqe contents if issue fails 2021-10-19 05:49:52 -06:00
iocost.h blk-iocost: Add iocg idle state tracepoint 2020-12-17 07:55:44 -07:00
iommu.h iommu: Log iova range in map/unmap trace events 2021-12-06 11:59:31 +01:00
ipi.h
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irq.h
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irq_matrix.h
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iscsi.h
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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 ata: libata: add tracepoints for ATA error handling 2022-01-05 19:33:01 +09:00
lock.h
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mce.h
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mctp.h mctp: Add tracepoints for tag/key handling 2021-09-29 11:00:11 +01:00
mdio.h
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migrate.h mm/migrate: demote pages during reclaim 2021-09-03 09:58:16 -07:00
mlxsw.h
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mmap.h mm: mmap: add trace point of vm_unmapped_area 2020-04-02 09:35:30 -07:00
mmap_lock.h mm: mmap_lock: use DECLARE_EVENT_CLASS and DEFINE_EVENT_FN 2021-11-06 13:30:36 -07:00
mmc.h
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mmflags.h Merge branch 'akpm' (patches from Andrew) 2021-09-08 12:55:35 -07:00
module.h
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mptcp.h mptcp: dump csum fields in mptcp_dump_mpext 2021-06-18 11:40:11 -07:00
napi.h
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nbd.h
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neigh.h
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net.h net: use %px to print skb address in trace_netif_receive_skb 2021-07-15 10:28:48 -07:00
net_probe_common.h
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netfs.h netfs: Display the netfs inode number in the netfs_read tracepoint 2022-01-07 09:22:19 +00:00
netlink.h netlink: add tracepoint at NL_SET_ERR_MSG 2021-02-04 18:05:59 -08:00
nfs.h NFS: Move NFS protocol display macros to global header 2021-11-02 12:31:23 -04:00
nilfs2.h
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nmi.h
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objagg.h
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oom.h
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osnoise.h tracing: Fix spelling in osnoise tracer "interferences" -> "interference" 2021-06-28 14:12:27 -04:00
page_isolation.h
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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/lru: Convert __pagevec_lru_add_fn to take a folio 2021-10-18 07:49:40 -04:00
percpu.h
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power.h PM: QoS: Simplify definitions of CPU latency QoS trace events 2020-02-13 11:26:39 +01:00
power_cpu_migrate.h
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preemptirq.h tracing: Change offset type to s32 in preempt/irq tracepoints 2020-01-03 11:34:37 -05:00
printk.h
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pwc.h
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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.h RDMA/core: Move the rdma_show_ib_cm_event() macro 2020-08-24 16:01:47 -03:00
rdma_core.h RDMA/core: Add trace points to follow MR allocation 2020-01-07 16:10:53 -04:00
regulator.h regulator: core: Add regulator bypass trace points 2020-05-29 17:17:02 +01:00
rpcgss.h sunrpc: fix header include guard in trace header 2021-11-17 18:27:32 -05:00
rpcrdma.h A slow cycle for nfsd: mainly cleanup, including Neil's patch dropping 2021-11-10 16:45:54 -08:00
rpm.h PM-runtime: add tracepoints for usage_count changes 2020-01-13 12:28:29 +01:00
rseq.h
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rtc.h
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rxrpc.h rxrpc: Fix decision on when to generate an IDLE ACK 2022-06-09 10:25:58 +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
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siox.h
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skb.h net: socket: rename SKB_DROP_REASON_SOCKET_FILTER 2022-01-27 08:45:13 -08:00
smbus.h
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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
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sunrpc.h SUNRPC: Fix the svc_deferred_event trace class 2022-04-20 09:36:12 +02:00
sunrpc_base.h SUNRPC: Tracepoints should display tk_pid and cl_clid as a fixed-size field 2021-10-20 18:09:54 -04:00
sunvnet.h
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swiotlb.h
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syscalls.h
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target.h scsi: target: core: Add CONTROL field for trace events 2020-10-02 18:36:19 -04:00
task.h
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tcp.h tcp: add accessors to read/set tp->snd_cwnd 2022-06-14 18:41:22 +02:00
tegra_apb_dma.h
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thermal.h thermal: devfreq_cooling: change tracing function and arguments 2020-12-11 14:10:44 +01:00
thermal_power_allocator.h
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thp.h mm/thp: drop unused trace events hugepage_[invalidate|splitting] 2022-01-15 16:30:31 +02:00
timer.h tracing: Fix various typos in comments 2021-03-23 14:08:18 -04:00
tlb.h
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udp.h
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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
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vmscan.h tracing: incorrect isolate_mote_t cast in mm_vmscan_lru_isolate 2022-06-09 10:25:34 +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 Merge branch 'akpm' (patches from Andrew) 2021-11-06 14:08:17 -07:00
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