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144f29e85702234b23d2a62abf723e6a17eb5427
linux/kernel/trace
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Steven Rostedt 144f29e857 tracing: Fix mmiotrace possible NULL dereferencing of hiter->dev 
If the mmio_pipe_open() fails to find a PCI device, the hiter->dev
will be assigned to NULL. The mmiotrace read() function dereferences the
hiter->dev if hiter exists.

Change the test of the read to not only check hiter being NULL, but also
the hiter->dev before dereferencing it.

Cc: stable@vger.kernel.org
Link: https://patch.msgid.link/20260721211143.36dbd559@gandalf.local.home
Fixes: f984b51e07 ("ftrace: add mmiotrace plugin")
Reported-by: Sashiko <sashiko-bot@kernel.org>
Link: https://sashiko.dev/#/patchset/20260715143604.14481-1-gaikwad.dcg%40gmail.com
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2026-07-24 13:43:09 -04:00
..
rv
rv: Use 0 to check preemption enabled in opid
2026-06-03 12:33:25 +02:00
blktrace.c
Merge tag 'block-7.0-20260305' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
2026-03-06 08:36:18 -08:00
bpf_trace.c
bpf: Add missing access_ok call to copy_user_syms
2026-06-21 18:01:33 -07:00
bpf_trace.h
tracing/treewide: Remove second parameter of __assign_str()
2024-05-22 20:14:47 -04:00
error_report-traces.c
…
fgraph.c
fgraph: Do not call handlers direct when not using ftrace_ops
2026-02-19 15:21:22 -05:00
fprobe.c
tracing/fprobe: Fix NULL pointer dereference in fprobe_fgraph_entry()
2026-06-30 23:58:19 +09:00
ftrace_internal.h
function_graph: Make fgraph_update_pid_func() a stub for !DYNAMIC_FTRACE
2024-06-10 18:08:23 -04:00
ftrace.c
ftrace: Add add_ftrace_hash_entry function
2026-06-07 10:03:00 -07:00
Kconfig
ring-buffer: Add persistent ring buffer invalid-page inject test
2026-05-28 22:40:51 -04:00
kprobe_event_gen_test.c
tracing: Fix wrong return in kprobe_event_gen_test.c
2023-03-19 12:20:48 -04:00
Makefile
Merge tag 'trace-v7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
2026-06-18 20:53:00 -07:00
pid_list.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
pid_list.h
trace/pid_list: optimize pid_list->lock contention
2025-11-13 15:15:54 -05:00
power-traces.c
PM: cpufreq: powernv/tracing: Move powernv_throttle trace event
2025-07-21 16:40:56 -04:00
preemptirq_delay_test.c
kernel: trace: preemptirq_delay_test: use offstack cpu mask
2025-07-08 18:17:38 -04:00
remote_test_events.h
tracing: Add a trace remote module for testing
2026-03-09 12:33:55 -04:00
remote_test.c
tracing: Fix desc in error path for the trace remote test module
2026-05-16 16:11:04 -04:00
rethook.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
ring_buffer_benchmark.c
tracing: Fix typo in ring_buffer_benchmark.c
2025-12-05 15:43:40 -05:00
ring_buffer.c
ring-buffer: Allow sparse CPU masks in ring_buffer_desc()
2026-07-10 14:04:26 -04:00
rpm-traces.c
…
simple_ring_buffer.c
tracing: Fix unload_page for simple_ring_buffer init rollback
2026-05-21 08:26:22 -04:00
synth_event_gen_test.c
tracing / synthetic: Disable events after testing in synth_event_gen_test_init()
2023-12-21 10:04:45 -05:00
trace_benchmark.c
tracing: Improve benchmark test performance by using do_div()
2024-05-13 20:00:57 -04:00
trace_benchmark.h
…
trace_boot.c
tracing: Make the backup instance non-reusable
2026-04-02 13:20:38 -04:00
trace_branch.c
tracing/branch: Use pr_warn() instead of printk(KERN_WARNING)
2026-05-21 18:03:08 -04:00
trace_btf.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
trace_btf.h
tracing/probes: Add a function to search a member of a struct/union
2023-08-23 09:40:16 +09:00
trace_clock.c
tracing: Use atomic64_inc_return() in trace_clock_counter()
2024-10-09 19:59:49 -04:00
trace_dynevent.c
tracing: Report wrong dynamic event command
2025-11-10 19:26:14 -05:00
trace_dynevent.h
tracing: probes: Fix a possible race in trace_probe_log APIs
2025-05-13 22:23:34 +09:00
trace_entries.h
tracing: Fix ftrace event field alignments
2026-02-05 09:47:11 -05:00
trace_eprobe.c
tracing: eprobe: read the complete FILTER_PTR_STRING pointer
2026-06-30 23:58:19 +09:00
trace_event_perf.c
perf/ftrace: Fix WARNING in __unregister_ftrace_function
2026-05-29 11:27:40 -04:00
trace_events_filter_test.h
…
trace_events_filter.c
tracing: Prevent out-of-bounds read in glob matching
2026-07-07 10:42:28 -04:00
trace_events_hist.c
tracing: Turn hist_elt_data field_var_str into a flexible array
2026-05-29 11:20:47 -04:00
trace_events_inject.c
tracing: Have format file honor EVENT_FILE_FL_FREED
2024-08-07 18:12:46 -04:00
trace_events_synth.c
tracing/synthetic: Free type string on error path
2026-07-07 13:59:55 -04:00
trace_events_trigger.c
tracing: Drain deferred trigger frees if kthread creation fails
2026-03-28 08:32:44 -04:00
trace_events_user.c
tracing/user_events: Fix use-after-free in user_event_mm_dup()
2026-07-07 13:59:35 -04:00
trace_events.c
Merge tag 'trace-v7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
2026-04-17 09:43:12 -07:00
trace_export.c
tracing: Fix ftrace event field alignments
2026-02-05 09:47:11 -05:00
trace_fprobe.c
Convert 'alloc_flex' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
trace_functions_graph.c
fgraph: Fix thresh_return nosleeptime double-adjust
2026-03-03 22:11:20 -05:00
trace_functions.c
tracing: Fix NULL pointer dereference in func_set_flag()
2026-07-07 10:42:28 -04:00
trace_hwlat.c
tracing: Fix false sharing in hwlat get_sample()
2026-02-10 03:36:39 -05:00
trace_irqsoff.c
tracing: Allow tracer to add more than 32 options
2025-11-04 21:44:00 +09:00
trace_kdb.c
tracing: Allow tracer to add more than 32 options
2025-11-04 21:44:00 +09:00
trace_kprobe_selftest.c
tracing: arm64: Avoid missing-prototype warnings
2023-07-12 12:06:04 -04:00
trace_kprobe_selftest.h
…
trace_kprobe.c
Merge tag 'trace-v7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
2026-04-17 09:43:12 -07:00
trace_mmiotrace.c
tracing: Fix mmiotrace possible NULL dereferencing of hiter->dev
2026-07-24 13:43:09 -04:00
trace_nop.c
…
trace_osnoise.c
tracing/osnoise: Call synchronize_rcu() when unregistering
2026-07-06 14:56:18 -04:00
trace_output.c
Merge tag 'trace-v7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
2026-04-17 09:43:12 -07:00
trace_output.h
tracing: Allow tracer to add more than 32 options
2025-11-04 21:44:00 +09:00
trace_pid.c
tracing: Move pid filtering into trace_pid.c
2026-02-08 21:01:13 -05:00
trace_preemptirq.c
tracing: Add a no-rcu-check version of trace_##event##_enabled()
2026-07-07 10:42:29 -04:00
trace_printk.c
tracing: move __printf() attribute on __ftrace_vbprintk()
2026-03-23 20:16:45 -04:00
trace_probe_kernel.h
tracing/probes: Fix to record 0-length data_loc in fetch_store_string*() if fails
2023-07-14 17:04:58 +09:00
trace_probe_tmpl.h
tracing/fprobe: Enable fprobe events with CONFIG_DYNAMIC_FTRACE_WITH_ARGS
2024-12-26 10:50:04 -05:00
trace_probe.c
tracing/probes: Make the $ prefix mandatory for comm access
2026-06-30 23:58:20 +09:00
trace_probe.h
tracing: probes: fix typo in a log message
2026-06-25 08:34:45 +09:00
trace_recursion_record.c
tracing: Switch trace_recursion_record.c code over to use guard()
2026-05-21 18:03:07 -04:00
trace_remote.c
tracing: Propagate errors from remote event bulk updates
2026-07-23 12:30:07 -04:00
trace_sched_switch.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
trace_sched_wakeup.c
tracing: Allow tracer to add more than 32 options
2025-11-04 21:44:00 +09:00
trace_selftest_dynamic.c
…
trace_selftest.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
trace_seq.c
tracing: Add bitmask-list option for human-readable bitmask display
2026-01-26 17:00:50 -05:00
trace_snapshot.c
tracing: Remove duplicate latency_fsnotify() stub
2026-03-31 14:58:39 -04:00
trace_stack.c
Merge tag 'trace-v6.16' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
2025-05-29 21:04:36 -07:00
trace_stat.c
Convert 'alloc_obj' family to use the new default GFP_KERNEL argument
2026-02-21 17:09:51 -08:00
trace_stat.h
…
trace_synth.h
…
trace_syscalls.c
bpf: Add sleepable support for classic tracepoint programs
2026-04-22 22:44:29 +02:00
trace_uprobe.c
tracing: Replace BUG_ON with lockdep_assert_held in uprobe_buffer functions
2026-06-01 23:35:21 +09:00
trace.c
tracing: Make tracepoint_printk static as not exported
2026-07-07 10:39:12 -04:00
trace.h
Merge tag 'trace-v7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
2026-04-17 09:43:12 -07:00
tracing_map.c
tracing: Simplify pages allocation for tracing_map logic
2026-05-21 18:12:10 -04:00
tracing_map.h
tracing: Simplify pages allocation for tracing_map logic
2026-05-21 18:12:10 -04:00
undefsyms_base.c
tracing: Make undefsyms_base.c a first-class citizen
2026-04-22 11:24:41 -04:00