1
linux/kernel/trace
David Sharp 5ded3dc6a3 ring-buffer: Wrap a list.next reference with rb_list_head()
This reference at the end of rb_get_reader_page() was causing off-by-one
writes to the prev pointer of the page after the reader page when that
page is the head page, and therefore the reader page has the RB_PAGE_HEAD
flag in its list.next pointer. This eventually results in a GPF in a
subsequent call to rb_set_head_page() (usually from rb_get_reader_page())
when that prev pointer is dereferenced. The dereferenced register would
characteristically have an address that appears shifted left by one byte
(eg, ffxxxxxxxxxxxxyy instead of ffffxxxxxxxxxxxx) due to being written at
an address one byte too high.

Signed-off-by: David Sharp <dhsharp@google.com>
LKML-Reference: <1262826727-9090-1-git-send-email-dhsharp@google.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2010-01-06 20:38:25 -05:00
..
blktrace.c Add a tracepoint for block request remapping 2009-10-01 21:19:34 +02:00
ftrace.c function-graph: Allow writing the same val to set_graph_function 2009-12-13 18:37:26 +01:00
Kconfig tracing: Kconfig spelling fixes and cleanups 2009-12-28 10:37:54 +01:00
kmemtrace.c kmemtrace: Fix up tracer registration 2009-10-01 11:53:44 +02:00
Makefile Merge branch 'tracing/hw-breakpoints' into perf/core 2009-11-21 14:07:23 +01:00
power-traces.c tracing/power: Remove two exports 2009-12-13 18:37:28 +01:00
ring_buffer_benchmark.c ring-buffer-benchmark: Add parameters to set produce/consumer priorities 2009-11-25 14:14:15 -05:00
ring_buffer.c ring-buffer: Wrap a list.next reference with rb_list_head() 2010-01-06 20:38:25 -05:00
trace_boot.c tracing: add filter event logic to special, mmiotrace and boot tracers 2009-09-12 23:34:04 -04:00
trace_branch.c tracing: user local buffer variable for trace branch tracer 2009-10-07 21:53:41 -04:00
trace_clock.c locking: Convert __raw_spin* functions to arch_spin* 2009-12-14 23:55:32 +01:00
trace_entries.h hw-breakpoints: Rewrite the hw-breakpoints layer on top of perf events 2009-11-08 15:34:42 +01:00
trace_event_profile.c tracing: Change event->profile_count to be int type 2009-12-13 18:37:28 +01:00
trace_events_filter.c tracing/filters: Fix to make system filter work 2009-10-29 08:53:20 +01:00
trace_events.c tracing: Move a printk out of ftrace_raw_reg_event_foo() 2009-12-13 18:37:25 +01:00
trace_export.c tracing: Fix sign fields in ftrace_define_fields_##call() 2009-12-30 10:27:06 -05:00
trace_functions_graph.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu 2009-12-14 09:58:24 -08:00
trace_functions.c tracing: switch function prints from %pf to %ps 2009-09-17 15:53:40 -04:00
trace_hw_branches.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu 2009-12-14 09:58:24 -08:00
trace_irqsoff.c tracing: Add stack trace to irqsoff tracer 2009-12-11 13:19:51 -05:00
trace_kprobe.c Merge branch 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-12-31 11:52:01 -08:00
trace_ksym.c ksym_tracer: Remove trace_stat 2009-12-30 07:50:50 +01:00
trace_mmiotrace.c tracing: add filter event logic to special, mmiotrace and boot tracers 2009-09-12 23:34:04 -04:00
trace_nop.c
trace_output.c tracing: Add full state to trace_seq 2009-12-09 14:05:49 -05:00
trace_output.h tracing: consolidate code between trace_output.c and trace_function_graph.c 2009-09-11 14:24:13 -04:00
trace_printk.c tracing: Remove markers 2009-09-18 21:22:08 +02:00
trace_sched_switch.c tracing: pass around ring buffer instead of tracer 2009-09-04 18:59:39 -04:00
trace_sched_wakeup.c locking: Convert __raw_spin* functions to arch_spin* 2009-12-14 23:55:32 +01:00
trace_selftest_dynamic.c
trace_selftest.c locking: Convert __raw_spin* functions to arch_spin* 2009-12-14 23:55:32 +01:00
trace_stack.c locking: Convert __raw_spin* functions to arch_spin* 2009-12-14 23:55:32 +01:00
trace_stat.c trace_stat: Fix missing entry in stat file 2009-08-17 11:25:09 +02:00
trace_stat.h tracing/stat: Add stat_release() callback 2009-07-10 12:14:05 +02:00
trace_syscalls.c tracing: Move a printk out of ftrace_raw_reg_event_foo() 2009-12-13 18:37:25 +01:00
trace_sysprof.c perf events, x86/stacktrace: Make stack walking optional 2009-12-17 09:56:19 +01:00
trace_workqueue.c tracing/workqueues: Add refcnt to struct cpu_workqueue_stats 2009-07-10 12:14:07 +02:00
trace.c Merge branch 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-12-31 11:52:01 -08:00
trace.h Merge branch 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-12-16 12:02:25 -08:00