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/linux-6.15/Documentation/dev-tools/
H A Dkcsan.rst7 The Kernel Concurrency Sanitizer (KCSAN) is a dynamic race detector, which
27 A typical data race report looks like this::
30 BUG: KCSAN: data-race in test_kernel_read / test_kernel_write
56 The other less common type of data race report looks like this::
59 BUG: KCSAN: data-race in test_kernel_rmw_array+0x71/0xd0
91 behaviour when encountering a data race is deemed safe. Please see
132 observed to remain unchanged, do not report the data race.
183 overall system performance and race detection ability.
302 x = 1; // data race!
308 ... = x; // data race!
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/linux-6.15/tools/memory-model/
H A Dlinux-kernel.cat212 let pre-race = ext & ((Plain * M) | ((M \ IW) * Plain))
215 let wr-incoh = pre-race & rf & rw-xbstar^-1
216 let rw-incoh = pre-race & fr & wr-vis^-1
217 let ww-incoh = pre-race & co & ww-vis^-1
222 let ww-race = (pre-race & co) \ ww-nonrace
223 let wr-race = (pre-race & (co? ; rf)) \ wr-vis \ rw-xbstar^-1
224 let rw-race = (pre-race & fr) \ rw-xbstar
226 flag ~empty (ww-race | wr-race | rw-race) as data-race
/linux-6.15/Documentation/translations/zh_CN/dev-tools/
H A Dkcsan.rst33 BUG: KCSAN: data-race in test_kernel_read / test_kernel_write
61 BUG: KCSAN: data-race in test_kernel_rmw_array+0x71/0xd0
63 race at unknown origin, with read to 0xffffffffc009bdb0 of 8 bytes by task 515 on cpu 2:
260 x = 1; // data race!
266 ... = x; // data race!
/linux-6.15/lib/
H A DKconfig.kcsan14 bool "KCSAN: dynamic data race detector"
21 data-race detector that relies on compile-time instrumentation.
51 external functions on report generation; if a race report is
70 various race scenarios, and verifies the reports generated to
131 results in more aggressive race detection, whereas a larger value
158 Any given race is only reported once in the defined time window.
173 conflicting access is of unknown origin. This type of race is
174 reported if it was only possible to infer a race due to a data value
178 bool "Strict data-race checking"
213 unchanged, do not report the data race.
[all …]
/linux-6.15/Documentation/driver-api/firmware/
H A Ddirect-fs-lookup.rst22 a race is possible with loading the driver and the real rootfs not yet being
23 available. Stuffing the firmware into initramfs resolves this race issue,
24 however note that using initrd does not suffice to address the same race.
H A Dfirmware_cache.rst21 filesystem to mount or dealing with possible race issues with lookups as the
/linux-6.15/tools/testing/selftests/kvm/x86/
H A Drecalc_apic_map_test.c21 static void *race(void *arg) in race() function
60 TEST_ASSERT_EQ(pthread_create(&thread, NULL, race, vcpus[0]), 0); in main()
/linux-6.15/drivers/gpu/drm/ci/xfails/
H A Drockchip-rk3399-flakes.txt20 kms_flip@dpms-vs-vblank-race-interruptible
62 kms_flip@dpms-vs-vblank-race
132 kms_flip@modeset-vs-vblank-race-interruptible
H A Dvirtio_gpu-none-fails.txt141 kms_flip@dpms-vs-vblank-race,Fail
142 kms_flip@dpms-vs-vblank-race-interruptible,Fail
151 kms_flip@modeset-vs-vblank-race,Fail
152 kms_flip@modeset-vs-vblank-race-interruptible,Fail
H A Di915-tgl-skips.txt46 perf_pmu@enable-race
H A Di915-tgl-fails.txt15 perf_pmu@enable-race,Timeout
H A Drockchip-rk3399-fails.txt51 kms_flip@modeset-vs-vblank-race,Fail
/linux-6.15/tools/perf/tests/shell/attr/
H A Dsystem-wide-dummy1 # Event added by system-wide or CPU perf-record to handle the race of
/linux-6.15/Documentation/arch/arm/
H A Dindex.rst12 cluster-pm-race-avoidance
/linux-6.15/tools/memory-model/Documentation/
H A Daccess-marking.txt20 2. Data-race marking, for example, "data_race(a = b);"
43 Therefore, if a given access is involved in an intentional data race,
52 race with one of data_race(), READ_ONCE(), or WRITE_ONCE(), will prevent
104 that the resulting data race was intentional.
114 in a retry. Unless the race condition that resulted in the bogus value
128 that the resulting data race was intentional.
149 that the resulting data race was intentional.
165 because KCSAN will have no way of knowing that the resulting data race
543 When designing stress tests it is important to ensure that race conditions
617 [1] "Concurrency bugs should fear the big bad data-race detector (part 2)"
H A Dexplanation.txt2248 race candidates actually do race in a given execution depends on
2424 accesses are race candidates, the LKMM can prove they are not
2439 race with U.)
2449 data race between them.
2499 data race where one was not already present in the source code,
2502 data race unless one already existed.
2620 stores don't race if W can be linked to W' by a
2633 two accesses don't race if R can be linked to W by an
2665 If R and W are race candidates and it is possible to link R to
2670 If W and R are race candidates and it is possible to link W to
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/linux-6.15/tools/testing/selftests/bpf/prog_tests/
H A Dtimer.c65 prog_fd = bpf_program__fd(timer_skel->progs.race); in timer()
/linux-6.15/Documentation/filesystems/
H A Dhpfs.rst239 Fixed a race-condition when write_inode is called while deleting file
243 Rewritten locking to avoid race-conditions
296 Fixed a possible bitmap race
302 Fixed a nondestructive race in rename
325 Fixed race-condition in buffer code - it is in all filesystems in Linux;
332 Fixed non-crashing race in unlink (Alexander Viro)
H A Dlocks.rst50 race and deadlock conditions that the current solution was the only
/linux-6.15/tools/testing/selftests/media_tests/
H A Dregression_test.txt32 Regression test for media_devnode unregister race with ioctl_syscall:
/linux-6.15/Documentation/driver-api/soundwire/
H A Dlocking.rst6 following locks in order to avoid race conditions in Bus operations on
/linux-6.15/net/netfilter/
H A Dxt_hashlimit.c217 const struct dsthash_dst *dst, bool *race) in dsthash_alloc_init() argument
229 *race = true; in dsthash_alloc_init()
734 bool race = false; in hashlimit_mt_common() local
743 dh = dsthash_alloc_init(hinfo, &dst, &race); in hashlimit_mt_common()
747 } else if (race) { in hashlimit_mt_common()
/linux-6.15/Documentation/hwmon/
H A Dasus_ec_sensors.rst59 Sensor values are read from EC registers, and to avoid race with the board
/linux-6.15/Documentation/power/
H A Dsuspend-and-cpuhotplug.rst21 What happens when regular CPU hotplug and Suspend-to-RAM race with each other
259 Are there any known problems when regular CPU hotplug and suspend race
272 2. If a regular CPU hotplug stress test happens to race with the freezer due
/linux-6.15/Documentation/input/devices/
H A Dbcm5974.rst43 different interfaces of the same usb device. This creates a race condition

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