Thanks! On Mon, Feb 24, 2025 at 12:51 PM Pierrick Bouvier < pierrick.bouv...@linaro.org> wrote:
> Regression introduced by cf76c4 > (hw/misc: Add nr_regs and cold_reset_values to NPCM CLK) > > cold_reset_values has a different size, depending on device used > (NPCM7xx vs NPCM8xx). However, s->regs has a fixed size, which matches > NPCM8xx. Thus, when initializing a NPCM7xx, we go past cold_reset_values > ending. > > Report by asan: > ==2066==ERROR: AddressSanitizer: global-buffer-overflow on address > 0x55d68a3e97f0 at pc 0x7fcaf2b2d14b bp 0x7ffff0cc3890 sp 0x7ffff0cc3040 > READ of size 196 at 0x55d68a3e97f0 thread T0 > #0 0x7fcaf2b2d14a in __interceptor_memcpy > ../../../../src/libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:827 > #1 0x55d688447e0d in memcpy > /usr/include/x86_64-linux-gnu/bits/string_fortified.h:29 > #2 0x55d688447e0d in npcm_clk_enter_reset ../hw/misc/npcm_clk.c:968 > #3 0x55d6899b7213 in resettable_phase_enter ../hw/core/resettable.c:136 > #4 0x55d6899a1ef7 in bus_reset_child_foreach ../hw/core/bus.c:97 > #5 0x55d6899b717d in resettable_child_foreach > ../hw/core/resettable.c:92 > #6 0x55d6899b717d in resettable_phase_enter ../hw/core/resettable.c:129 > #7 0x55d6899b4ead in resettable_container_child_foreach > ../hw/core/resetcontainer.c:54 > #8 0x55d6899b717d in resettable_child_foreach > ../hw/core/resettable.c:92 > #9 0x55d6899b717d in resettable_phase_enter ../hw/core/resettable.c:129 > #10 0x55d6899b7bfa in resettable_assert_reset > ../hw/core/resettable.c:55 > #11 0x55d6899b8666 in resettable_reset ../hw/core/resettable.c:45 > #12 0x55d688d15cd2 in qemu_system_reset ../system/runstate.c:527 > #13 0x55d687fc5edd in qdev_machine_creation_done > ../hw/core/machine.c:1738 > #14 0x55d688d209bd in qemu_machine_creation_done ../system/vl.c:2779 > #15 0x55d688d209bd in qmp_x_exit_preconfig ../system/vl.c:2807 > #16 0x55d688d281fb in qemu_init ../system/vl.c:3838 > #17 0x55d687ceab12 in main ../system/main.c:68 > #18 0x7fcaef006249 (/lib/x86_64-linux-gnu/libc.so.6+0x27249) > #19 0x7fcaef006304 in __libc_start_main > (/lib/x86_64-linux-gnu/libc.so.6+0x27304) > #20 0x55d687cf0010 in _start > (/home/runner/work/qemu-ci/qemu-ci/build/qemu-system-arm+0x371c010) > > 0x55d68a3e97f0 is located 0 bytes to the right of global variable > 'npcm7xx_cold_reset_values' defined in '../hw/misc/npcm_clk.c:134:23' > (0x55d68a3e9780) of size 112 > > Impacted tests: > Summary of Failures: > > check: > 2/747 qemu:qtest+qtest-aarch64 / qtest-aarch64/qom-test > ERROR 9.28s killed by signal 6 SIGABRT > 4/747 qemu:qtest+qtest-arm / qtest-arm/qom-test > ERROR 7.82s killed by signal 6 SIGABRT > 32/747 qemu:qtest+qtest-aarch64 / qtest-aarch64/device-introspect-test > ERROR 10.91s killed by signal 6 SIGABRT > 35/747 qemu:qtest+qtest-arm / qtest-arm/device-introspect-test > ERROR 11.33s killed by signal 6 SIGABRT > 114/747 qemu:qtest+qtest-arm / qtest-arm/npcm7xx_pwm-test > ERROR 0.98s killed by signal 6 SIGABRT > 115/747 qemu:qtest+qtest-aarch64 / qtest-aarch64/test-hmp > ERROR 2.95s killed by signal 6 SIGABRT > 117/747 qemu:qtest+qtest-arm / qtest-arm/test-hmp > ERROR 2.54s killed by signal 6 SIGABRT > 151/747 qemu:qtest+qtest-arm / qtest-arm/npcm7xx_watchdog_timer-test > ERROR 0.96s killed by signal 6 SIGABRT > 247/747 qemu:qtest+qtest-arm / qtest-arm/npcm7xx_adc-test > ERROR 0.96s killed by signal 6 SIGABRT > 248/747 qemu:qtest+qtest-arm / qtest-arm/npcm7xx_gpio-test > ERROR 1.05s killed by signal 6 SIGABRT > 249/747 qemu:qtest+qtest-arm / qtest-arm/npcm7xx_rng-test > ERROR 0.97s killed by signal 6 SIGABRT > 250/747 qemu:qtest+qtest-arm / qtest-arm/npcm7xx_sdhci-test > ERROR 0.97s killed by signal 6 SIGABRT > 251/747 qemu:qtest+qtest-arm / qtest-arm/npcm7xx_smbus-test > ERROR 0.89s killed by signal 6 SIGABRT > 252/747 qemu:qtest+qtest-arm / qtest-arm/npcm7xx_timer-test > ERROR 1.09s killed by signal 6 SIGABRT > 253/747 qemu:qtest+qtest-arm / qtest-arm/npcm_gmac-test > ERROR 1.12s killed by signal 6 SIGABRT > 255/747 qemu:qtest+qtest-arm / qtest-arm/npcm7xx_emc-test > ERROR 1.05s killed by signal 6 SIGABRT > > check-functional: > 22/203 qemu:func-thorough+func-arm-thorough+thorough / > func-arm-arm_quanta_gsj ERROR 0.79s exit > status 1 > 38/203 qemu:func-quick+func-aarch64 / func-aarch64-migration > ERROR 1.97s exit status 1 > 45/203 qemu:func-quick+func-arm / func-arm-migration > ERROR 1.90s exit status 1 > > Signed-off-by: Pierrick Bouvier <pierrick.bouv...@linaro.org> > Reviewed-by: Hao Wu <wuhao...@google.com> > --- > hw/misc/npcm_clk.c | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/hw/misc/npcm_clk.c b/hw/misc/npcm_clk.c > index d1f29759d59..0e85974cf96 100644 > --- a/hw/misc/npcm_clk.c > +++ b/hw/misc/npcm_clk.c > @@ -964,8 +964,9 @@ static void npcm_clk_enter_reset(Object *obj, > ResetType type) > NPCMCLKState *s = NPCM_CLK(obj); > NPCMCLKClass *c = NPCM_CLK_GET_CLASS(s); > > - g_assert(sizeof(s->regs) >= c->nr_regs * sizeof(uint32_t)); > - memcpy(s->regs, c->cold_reset_values, sizeof(s->regs)); > + size_t sizeof_regs = c->nr_regs * sizeof(uint32_t); > + g_assert(sizeof(s->regs) >= sizeof_regs); > + memcpy(s->regs, c->cold_reset_values, sizeof_regs); > s->ref_ns = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); > npcm7xx_clk_update_all_clocks(s); > /* > -- > 2.39.5 > >
