Chuck Lever 85ee17ca21 SUNRPC: Fix the svc_deferred_event trace class ... [ Upstream commit 4d5004451ab2218eab94a30e1841462c9316ba19 ] Fix a NULL deref crash that occurs when an svc_rqst is deferred while the sunrpc tracing subsystem is enabled. svc_revisit() sets dr->xprt to NULL, so it can't be relied upon in the tracepoint to provide the remote's address. Unfortunately we can't revert the "svc_deferred_class" hunk in commit ece200ddd5 ("sunrpc: Save remote presentation address in svc_xprt for trace events") because there is now a specific check of event format specifiers for unsafe dereferences. The warning that check emits is: event svc_defer_recv has unsafe dereference of argument 1 A "%pISpc" format specifier with a "struct sockaddr *" is indeed flagged by this check. Instead, take the brute-force approach used by the svcrdma_qp_error tracepoint. Convert the dr::addr field into a presentation address in the TP_fast_assign() arm of the trace event, and store that as a string. This fix can be backported to -stable kernels. In the meantime, commit c6ced22997ad ("tracing: Update print fmt check to handle new __get_sockaddr() macro") is now in v5.18, so this wonky fix can be replaced with __sockaddr() and friends properly during the v5.19 merge window. Fixes: ece200ddd5 ("sunrpc: Save remote presentation address in svc_xprt for trace events") Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2022-04-20 09:23:11 +02:00
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9p.h	…
afs.h	afs: Fix tracepoint string placement with built-in AFS	2021-07-28 14:35:41 +02:00
alarmtimer.h	…
asoc.h	…
avc.h	…
bcache.h	…
block.h	…
bpf_test_run.h	…
bridge.h	…
btrfs.h	btrfs: use own btree inode io_tree owner id	2020-10-07 12:13:22 +02:00
cachefiles.h	…
cgroup.h	cgroup: Trace event cgroup id fields should be u64	2022-01-27 10:53:52 +01:00
clk.h	…
cma.h	…
compaction.h	…
context_tracking.h	…
cpuhp.h	…
devfreq.h	…
devlink.h	…
dma_fence.h	…
erofs.h	erofs: fix up erofs_lookup tracepoint	2021-09-30 10:11:00 +02:00
ext4.h	ext4: fix ext4_fc_stats trace point	2022-04-08 14:39:55 +02:00
f2fs.h	f2fs: fix up f2fs_lookup tracepoints	2021-11-26 10:39:12 +01:00
fib.h	…
fib6.h	…
filelock.h	…
filemap.h	…
fs_dax.h	…
fscache.h	…
fsi.h	…
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fsi_master_ast_cf.h	…
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gpio.h	…
gpu_mem.h	…
host1x.h	…
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hwmon.h	…
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intel-sst.h	…
intel_iommu.h	…
intel_ish.h	…
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iocost.h	…
iommu.h	…
ipi.h	…
irq.h	…
irq_matrix.h	…
iscsi.h	…
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kmem.h	…
kvm.h	…
kyber.h	…
libata.h	…
lock.h	…
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mmc.h	…
mmflags.h	…
module.h	…
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neigh.h	…
net.h	…
net_probe_common.h	…
nilfs2.h	…
nmi.h	…
objagg.h	…
oom.h	…
page_isolation.h	…
page_pool.h	…
page_ref.h	…
pagemap.h	…
percpu.h	…
power.h	…
power_cpu_migrate.h	…
preemptirq.h	…
printk.h	…
pwc.h	…
pwm.h	…
qdisc.h	…
qla.h	…
qrtr.h	…
random.h	…
rcu.h	…
rdma.h	…
rdma_core.h	…
regulator.h	…
rpcgss.h	…
rpcrdma.h	NFS Client Updates for Linux 5.10	2020-10-20 13:26:30 -07:00
rpm.h	…
rseq.h	…
rtc.h	…
rxrpc.h	rxrpc: Fix call timer start racing with call destruction	2022-04-08 14:40:41 +02:00
sched.h	sched/debug: Add new tracepoint to track cpu_capacity	2020-10-03 16:30:52 +02:00
scmi.h	…
scsi.h	…
sctp.h	…
signal.h	…
siox.h	…
skb.h	…
smbus.h	…
sock.h	…
spi.h	…
spmi.h	…
sunrpc.h	SUNRPC: Fix the svc_deferred_event trace class	2022-04-20 09:23:11 +02:00
sunvnet.h	…
swiotlb.h	…
syscalls.h	…
target.h	scsi: target: core: Add CONTROL field for trace events	2020-10-02 18:36:19 -04:00
task.h	…
tcp.h	…
tegra_apb_dma.h	…
thermal.h	…
thermal_power_allocator.h	…
thp.h	…
timer.h	…
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vmscan.h	…
vsock_virtio_transport_common.h	…
wbt.h	…
workqueue.h	…
writeback.h	trace: fix potenial dangerous pointer	2020-11-25 13:03:44 +01:00
xdp.h	…
xen.h	…