[moderation] KCSAN: data-race in acpi_ut_exit / acpi_ut_trace_ptr
7 views
Skip to first unread message
syzbot
Sep 27, 2026, 10:16:37 AMSep 27
to syzkaller-upst...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: fddfc3ec3179 Merge tag 'pci-v7.3-fixes-2' of git://git.ker..
git tree: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
console output: https://syzkaller.appspot.com/x/log.txt?x=13118605580000
kernel config: https://syzkaller.appspot.com/x/.config?x=ea1e6d8de13bab08
dashboard link: https://syzkaller.appspot.com/bug?extid=f8dca90855aa9df4c3a0
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15d0d315580000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+f8dca9...@syzkaller.appspotmail.com
==================================================================
BUG: KCSAN: data-race in acpi_ut_exit / acpi_ut_trace_ptr
read to 0xffffffff896258c8 of 4 bytes by task 3638 on cpu 0:
acpi_ut_exit+0xaf/0xf0 drivers/acpi/acpica/utdebug.c:422
acpi_ex_enter_interpreter+0xbb/0xd0 drivers/acpi/acpica/exutils.c:67
acpi_ds_terminate_control_method+0x28e/0x5e0 drivers/acpi/acpica/dsmethod.c:782
acpi_ps_parse_aml+0x68f/0xa10 drivers/acpi/acpica/psparse.c:582
acpi_ps_execute_method+0x4af/0x660 drivers/acpi/acpica/psxface.c:190
acpi_ns_evaluate+0x8ae/0xac0 drivers/acpi/acpica/nseval.c:205
acpi_evaluate_object+0x41b/0x800 drivers/acpi/acpica/nsxfeval.c:354
acpi_evaluate_integer+0x7c/0x120 drivers/acpi/utils.c:260
status_show+0x5d/0xc0 drivers/acpi/device_sysfs.c:539
dev_attr_show+0x3f/0xa0 drivers/base/core.c:2491
sysfs_kf_seq_show+0x1a3/0x280 fs/sysfs/file.c:65
kernfs_seq_show+0x82/0xa0 fs/kernfs/file.c:216
seq_read_iter+0x2d9/0x8f0 fs/seq_file.c:231
kernfs_fop_read_iter+0xbe/0x320 fs/kernfs/file.c:290
new_sync_read fs/read_write.c:493 [inline]
vfs_read+0x699/0x7c0 fs/read_write.c:574
ksys_read+0xdc/0x1a0 fs/read_write.c:716
__do_sys_read fs/read_write.c:725 [inline]
__se_sys_read fs/read_write.c:723 [inline]
__x64_sys_read+0x40/0x50 fs/read_write.c:723
x64_sys_call+0x2135/0x2550 arch/x86/include/generated/asm/syscalls_64.h:1
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x112/0x360 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
read-write to 0xffffffff896258c8 of 4 bytes by task 3639 on cpu 1:
acpi_ut_trace_ptr+0x49/0x180 drivers/acpi/acpica/utdebug.c:306
acpi_ut_get_simple_object_size+0x33/0x2f0 drivers/acpi/acpica/utobject.c:431
acpi_ut_get_object_size+0x144/0x1d0 drivers/acpi/acpica/utobject.c:679
acpi_evaluate_object+0x62c/0x800 drivers/acpi/acpica/nsxfeval.c:394
acpi_evaluate_integer+0x7c/0x120 drivers/acpi/utils.c:260
status_show+0x5d/0xc0 drivers/acpi/device_sysfs.c:539
dev_attr_show+0x3f/0xa0 drivers/base/core.c:2491
sysfs_kf_seq_show+0x1a3/0x280 fs/sysfs/file.c:65
kernfs_seq_show+0x82/0xa0 fs/kernfs/file.c:216
seq_read_iter+0x2d9/0x8f0 fs/seq_file.c:231
kernfs_fop_read_iter+0xbe/0x320 fs/kernfs/file.c:290
new_sync_read fs/read_write.c:493 [inline]
vfs_read+0x699/0x7c0 fs/read_write.c:574
ksys_read+0xdc/0x1a0 fs/read_write.c:716
__do_sys_read fs/read_write.c:725 [inline]
__se_sys_read fs/read_write.c:723 [inline]
__x64_sys_read+0x40/0x50 fs/read_write.c:723
x64_sys_call+0x2135/0x2550 arch/x86/include/generated/asm/syscalls_64.h:1
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x112/0x360 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
value changed: 0x00000009 -> 0x00000003
Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 3639 Comm: syz-executor145 Not tainted syzkaller #0 PREEMPT(lazy)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
==================================================================
==================================================================
BUG: KCSAN: data-race in acpi_ut_exit / acpi_ut_trace
read-write to 0xffffffff896258c8 of 4 bytes by task 3638 on cpu 0:
acpi_ut_trace+0x44/0x180 drivers/acpi/acpica/utdebug.c:268
acpi_evaluate_object+0x60/0x800 drivers/acpi/acpica/nsxfeval.c:173
acpi_evaluate_integer+0x7c/0x120 drivers/acpi/utils.c:260
status_show+0x5d/0xc0 drivers/acpi/device_sysfs.c:539
dev_attr_show+0x3f/0xa0 drivers/base/core.c:2491
sysfs_kf_seq_show+0x1a3/0x280 fs/sysfs/file.c:65
kernfs_seq_show+0x82/0xa0 fs/kernfs/file.c:216
seq_read_iter+0x2d9/0x8f0 fs/seq_file.c:231
kernfs_fop_read_iter+0xbe/0x320 fs/kernfs/file.c:290
new_sync_read fs/read_write.c:493 [inline]
vfs_read+0x699/0x7c0 fs/read_write.c:574
ksys_read+0xdc/0x1a0 fs/read_write.c:716
__do_sys_read fs/read_write.c:725 [inline]
__se_sys_read fs/read_write.c:723 [inline]
__x64_sys_read+0x40/0x50 fs/read_write.c:723
x64_sys_call+0x2135/0x2550 arch/x86/include/generated/asm/syscalls_64.h:1
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x112/0x360 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
write to 0xffffffff896258c8 of 4 bytes by task 3639 on cpu 1:
acpi_ut_exit+0xd5/0xf0 drivers/acpi/acpica/utdebug.c:423
acpi_ds_method_data_init+0x506/0x510 drivers/acpi/acpica/dsmthdat.c:86
acpi_ds_create_walk_state+0xf1/0x1c0 drivers/acpi/acpica/dswstate.c:534
acpi_ps_execute_method+0x24f/0x660 drivers/acpi/acpica/psxface.c:134
acpi_ns_evaluate+0x8ae/0xac0 drivers/acpi/acpica/nseval.c:205
acpi_evaluate_object+0x41b/0x800 drivers/acpi/acpica/nsxfeval.c:354
acpi_evaluate_integer+0x7c/0x120 drivers/acpi/utils.c:260
status_show+0x5d/0xc0 drivers/acpi/device_sysfs.c:539
dev_attr_show+0x3f/0xa0 drivers/base/core.c:2491
sysfs_kf_seq_show+0x1a3/0x280 fs/sysfs/file.c:65
kernfs_seq_show+0x82/0xa0 fs/kernfs/file.c:216
seq_read_iter+0x2d9/0x8f0 fs/seq_file.c:231
kernfs_fop_read_iter+0xbe/0x320 fs/kernfs/file.c:290
new_sync_read fs/read_write.c:493 [inline]
vfs_read+0x699/0x7c0 fs/read_write.c:574
ksys_read+0xdc/0x1a0 fs/read_write.c:716
__do_sys_read fs/read_write.c:725 [inline]
__se_sys_read fs/read_write.c:723 [inline]
__x64_sys_read+0x40/0x50 fs/read_write.c:723
x64_sys_call+0x2135/0x2550 arch/x86/include/generated/asm/syscalls_64.h:1
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x112/0x360 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
value changed: 0x00000005 -> 0x00000008
Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 3639 Comm: syz-executor145 Not tainted syzkaller #0 PREEMPT(lazy)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
==================================================================
==================================================================
BUG: KCSAN: data-race in acpi_ut_status_exit / acpi_ut_trace
read-write to 0xffffffff896258c8 of 4 bytes by task 3638 on cpu 0:
acpi_ut_trace+0x44/0x180 drivers/acpi/acpica/utdebug.c:268
acpi_evaluate_object+0x60/0x800 drivers/acpi/acpica/nsxfeval.c:173
acpi_evaluate_integer+0x7c/0x120 drivers/acpi/utils.c:260
status_show+0x5d/0xc0 drivers/acpi/device_sysfs.c:539
dev_attr_show+0x3f/0xa0 drivers/base/core.c:2491
sysfs_kf_seq_show+0x1a3/0x280 fs/sysfs/file.c:65
kernfs_seq_show+0x82/0xa0 fs/kernfs/file.c:216
seq_read_iter+0x2d9/0x8f0 fs/seq_file.c:231
kernfs_fop_read_iter+0xbe/0x320 fs/kernfs/file.c:290
new_sync_read fs/read_write.c:493 [inline]
vfs_read+0x699/0x7c0 fs/read_write.c:574
ksys_read+0xdc/0x1a0 fs/read_write.c:716
__do_sys_read fs/read_write.c:725 [inline]
__se_sys_read fs/read_write.c:723 [inline]
__x64_sys_read+0x40/0x50 fs/read_write.c:723
x64_sys_call+0x2135/0x2550 arch/x86/include/generated/asm/syscalls_64.h:1
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x112/0x360 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
read to 0xffffffff896258c8 of 4 bytes by task 3639 on cpu 1:
acpi_ut_status_exit+0xd8/0x120 drivers/acpi/acpica/utdebug.c:471
acpi_ds_init_aml_walk+0x174/0x310 drivers/acpi/acpica/dswstate.c:-1
acpi_ps_execute_method+0x2bd/0x660 drivers/acpi/acpica/psxface.c:141
acpi_ns_evaluate+0x8ae/0xac0 drivers/acpi/acpica/nseval.c:205
acpi_evaluate_object+0x41b/0x800 drivers/acpi/acpica/nsxfeval.c:354
acpi_evaluate_integer+0x7c/0x120 drivers/acpi/utils.c:260
status_show+0x5d/0xc0 drivers/acpi/device_sysfs.c:539
dev_attr_show+0x3f/0xa0 drivers/base/core.c:2491
sysfs_kf_seq_show+0x1a3/0x280 fs/sysfs/file.c:65
kernfs_seq_show+0x82/0xa0 fs/kernfs/file.c:216
seq_read_iter+0x2d9/0x8f0 fs/seq_file.c:231
kernfs_fop_read_iter+0xbe/0x320 fs/kernfs/file.c:290
new_sync_read fs/read_write.c:493 [inline]
vfs_read+0x699/0x7c0 fs/read_write.c:574
ksys_read+0xdc/0x1a0 fs/read_write.c:716
__do_sys_read fs/read_write.c:725 [inline]
__se_sys_read fs/read_write.c:723 [inline]
__x64_sys_read+0x40/0x50 fs/read_write.c:723
x64_sys_call+0x2135/0x2550 arch/x86/include/generated/asm/syscalls_64.h:1
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x112/0x360 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
value changed: 0x00000004 -> 0x00000007
Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 3639 Comm: syz-executor145 Not tainted syzkaller #0 PREEMPT(lazy)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
==================================================================
==================================================================
BUG: KCSAN: data-race in acpi_ut_status_exit / acpi_ut_track_stack_ptr
read to 0xffffffff896258c8 of 4 bytes by task 3636 on cpu 0:
acpi_ut_track_stack_ptr+0x5f/0xd0 drivers/acpi/acpica/utdebug.c:73
acpi_get_handle+0x40/0x180 drivers/acpi/acpica/nsxfname.c:53
acpi_has_method+0x46/0x80 drivers/acpi/utils.c:672
acpi_pci_set_power_state+0x5d/0x190 drivers/pci/pci-acpi.c:1084
platform_pci_set_power_state drivers/pci/pci.c:1091 [inline]
pci_power_up+0x40/0x3b0 drivers/pci/pci.c:1339
pci_pm_power_up_and_verify_state+0x29/0x130 drivers/pci/pci.c:3186
pci_pm_default_resume_early drivers/pci/pci-driver.c:614 [inline]
pci_pm_runtime_resume+0x5b/0x170 drivers/pci/pci-driver.c:1406
__rpm_callback+0x2e6/0x6d0 drivers/base/power/runtime.c:406
rpm_callback drivers/base/power/runtime.c:460 [inline]
rpm_resume+0x94e/0xce0 drivers/base/power/runtime.c:939
pm_runtime_forbid+0x84/0xa0 drivers/base/power/runtime.c:1672
control_store+0x6a/0x90 drivers/base/power/sysfs.c:114
dev_attr_store+0x4a/0x70 drivers/base/core.c:2509
sysfs_kf_write+0xfe/0x120 fs/sysfs/file.c:145
kernfs_fop_write_iter+0x1d2/0x2e0 fs/kernfs/file.c:345
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x57f/0x9a0 fs/read_write.c:687
ksys_write+0xdc/0x1a0 fs/read_write.c:739
__do_sys_write fs/read_write.c:750 [inline]
__se_sys_write fs/read_write.c:747 [inline]
__x64_sys_write+0x40/0x50 fs/read_write.c:747
x64_sys_call+0x154e/0x2550 arch/x86/include/generated/asm/syscalls_64.h:2
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x112/0x360 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
write to 0xffffffff896258c8 of 4 bytes by task 3639 on cpu 1:
acpi_ut_status_exit+0xfe/0x120 drivers/acpi/acpica/utdebug.c:472
acpi_ds_restart_control_method+0x2ce/0x2e0 drivers/acpi/acpica/dsmethod.c:-1
acpi_ps_parse_aml+0x906/0xa10 drivers/acpi/acpica/psparse.c:-1
acpi_ps_execute_method+0x4af/0x660 drivers/acpi/acpica/psxface.c:190
acpi_ns_evaluate+0x8ae/0xac0 drivers/acpi/acpica/nseval.c:205
acpi_evaluate_object+0x41b/0x800 drivers/acpi/acpica/nsxfeval.c:354
acpi_evaluate_integer+0x7c/0x120 drivers/acpi/utils.c:260
status_show+0x5d/0xc0 drivers/acpi/device_sysfs.c:539
dev_attr_show+0x3f/0xa0 drivers/base/core.c:2491
sysfs_kf_seq_show+0x1a3/0x280 fs/sysfs/file.c:65
kernfs_seq_show+0x82/0xa0 fs/kernfs/file.c:216
seq_read_iter+0x2d9/0x8f0 fs/seq_file.c:231
kernfs_fop_read_iter+0xbe/0x320 fs/kernfs/file.c:290
new_sync_read fs/read_write.c:493 [inline]
vfs_read+0x699/0x7c0 fs/read_write.c:574
ksys_read+0xdc/0x1a0 fs/read_write.c:716
__do_sys_read fs/read_write.c:725 [inline]
__se_sys_read fs/read_write.c:723 [inline]
__x64_sys_read+0x40/0x50 fs/read_write.c:723
x64_sys_call+0x2135/0x2550 arch/x86/include/generated/asm/syscalls_64.h:1
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x112/0x360 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
value changed: 0x0000000b -> 0x0000000c
Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 3639 Comm: syz-executor145 Not tainted syzkaller #0 PREEMPT(lazy)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
==================================================================
==================================================================
BUG: KCSAN: data-race in acpi_ut_status_exit / acpi_ut_trace_ptr
read-write to 0xffffffff896258c8 of 4 bytes by task 3636 on cpu 0:
acpi_ut_trace_ptr+0x49/0x180 drivers/acpi/acpica/utdebug.c:306
acpi_ns_get_node+0x3c/0xc0 drivers/acpi/acpica/nsutils.c:719
acpi_get_handle+0xfd/0x180 drivers/acpi/acpica/nsxfname.c:98
acpi_has_method+0x46/0x80 drivers/acpi/utils.c:672
acpi_pci_set_power_state+0x5d/0x190 drivers/pci/pci-acpi.c:1084
platform_pci_set_power_state drivers/pci/pci.c:1091 [inline]
pci_power_up+0x40/0x3b0 drivers/pci/pci.c:1339
pci_pm_power_up_and_verify_state+0x29/0x130 drivers/pci/pci.c:3186
pci_pm_default_resume_early drivers/pci/pci-driver.c:614 [inline]
pci_pm_runtime_resume+0x5b/0x170 drivers/pci/pci-driver.c:1406
__rpm_callback+0x2e6/0x6d0 drivers/base/power/runtime.c:406
rpm_callback drivers/base/power/runtime.c:460 [inline]
rpm_resume+0x94e/0xce0 drivers/base/power/runtime.c:939
pm_runtime_forbid+0x84/0xa0 drivers/base/power/runtime.c:1672
control_store+0x6a/0x90 drivers/base/power/sysfs.c:114
dev_attr_store+0x4a/0x70 drivers/base/core.c:2509
sysfs_kf_write+0xfe/0x120 fs/sysfs/file.c:145
kernfs_fop_write_iter+0x1d2/0x2e0 fs/kernfs/file.c:345
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x57f/0x9a0 fs/read_write.c:687
ksys_write+0xdc/0x1a0 fs/read_write.c:739
__do_sys_write fs/read_write.c:750 [inline]
__se_sys_write fs/read_write.c:747 [inline]
__x64_sys_write+0x40/0x50 fs/read_write.c:747
x64_sys_call+0x154e/0x2550 arch/x86/include/generated/asm/syscalls_64.h:2
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x112/0x360 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
read to 0xffffffff896258c8 of 4 bytes by task 3639 on cpu 1:
acpi_ut_status_exit+0xd8/0x120 drivers/acpi/acpica/utdebug.c:471
acpi_ps_next_parse_state+0x2fb/0x310 drivers/acpi/acpica/psparse.c:406
acpi_ps_complete_op+0x1d0/0x780 drivers/acpi/acpica/psobject.c:484
acpi_ps_parse_loop+0x1104/0x1520 drivers/acpi/acpica/psloop.c:580
acpi_ps_parse_aml+0x2b0/0xa10 drivers/acpi/acpica/psparse.c:489
acpi_ps_execute_method+0x4af/0x660 drivers/acpi/acpica/psxface.c:190
acpi_ns_evaluate+0x8ae/0xac0 drivers/acpi/acpica/nseval.c:205
acpi_evaluate_object+0x41b/0x800 drivers/acpi/acpica/nsxfeval.c:354
acpi_evaluate_integer+0x7c/0x120 drivers/acpi/utils.c:260
status_show+0x5d/0xc0 drivers/acpi/device_sysfs.c:539
dev_attr_show+0x3f/0xa0 drivers/base/core.c:2491
sysfs_kf_seq_show+0x1a3/0x280 fs/sysfs/file.c:65
kernfs_seq_show+0x82/0xa0 fs/kernfs/file.c:216
seq_read_iter+0x2d9/0x8f0 fs/seq_file.c:231
kernfs_fop_read_iter+0xbe/0x320 fs/kernfs/file.c:290
new_sync_read fs/read_write.c:493 [inline]
vfs_read+0x699/0x7c0 fs/read_write.c:574
ksys_read+0xdc/0x1a0 fs/read_write.c:716
__do_sys_read fs/read_write.c:725 [inline]
__se_sys_read fs/read_write.c:723 [inline]
__x64_sys_read+0x40/0x50 fs/read_write.c:723
x64_sys_call+0x2135/0x2550 arch/x86/include/generated/asm/syscalls_64.h:1
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x112/0x360 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
value changed: 0x0000000b -> 0x0000000c
Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 3639 Comm: syz-executor145 Not tainted syzkaller #0 PREEMPT(lazy)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
==================================================================
==================================================================
BUG: KCSAN: data-race in acpi_ut_status_exit / acpi_ut_trace
read-write to 0xffffffff896258c8 of 4 bytes by task 3638 on cpu 0:
acpi_ut_trace+0x44/0x180 drivers/acpi/acpica/utdebug.c:268
acpi_evaluate_object+0x60/0x800 drivers/acpi/acpica/nsxfeval.c:173
acpi_evaluate_integer+0x7c/0x120 drivers/acpi/utils.c:260
status_show+0x5d/0xc0 drivers/acpi/device_sysfs.c:539
dev_attr_show+0x3f/0xa0 drivers/base/core.c:2491
sysfs_kf_seq_show+0x1a3/0x280 fs/sysfs/file.c:65
kernfs_seq_show+0x82/0xa0 fs/kernfs/file.c:216
seq_read_iter+0x2d9/0x8f0 fs/seq_file.c:231
kernfs_fop_read_iter+0xbe/0x320 fs/kernfs/file.c:290
new_sync_read fs/read_write.c:493 [inline]
vfs_read+0x699/0x7c0 fs/read_write.c:574
ksys_read+0xdc/0x1a0 fs/read_write.c:716
__do_sys_read fs/read_write.c:725 [inline]
__se_sys_read fs/read_write.c:723 [inline]
__x64_sys_read+0x40/0x50 fs/read_write.c:723
x64_sys_call+0x2135/0x2550 arch/x86/include/generated/asm/syscalls_64.h:1
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x112/0x360 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
write to 0xffffffff896258c8 of 4 bytes by task 3639 on cpu 1:
acpi_ut_status_exit+0xfe/0x120 drivers/acpi/acpica/utdebug.c:472
acpi_ds_init_aml_walk+0x174/0x310 drivers/acpi/acpica/dswstate.c:-1
acpi_ps_execute_method+0x2bd/0x660 drivers/acpi/acpica/psxface.c:141
acpi_ns_evaluate+0x8ae/0xac0 drivers/acpi/acpica/nseval.c:205
acpi_evaluate_object+0x41b/0x800 drivers/acpi/acpica/nsxfeval.c:354
acpi_evaluate_integer+0x7c/0x120 drivers/acpi/utils.c:260
status_show+0x5d/0xc0 drivers/acpi/device_sysfs.c:539
dev_attr_show+0x3f/0xa0 drivers/base/core.c:2491
sysfs_kf_seq_show+0x1a3/0x280 fs/sysfs/file.c:65
kernfs_seq_show+0x82/0xa0 fs/kernfs/file.c:216
seq_read_iter+0x2d9/0x8f0 fs/seq_file.c:231
kernfs_fop_read_iter+0xbe/0x320 fs/kernfs/file.c:290
new_sync_read fs/read_write.c:493 [inline]
vfs_read+0x699/0x7c0 fs/read_write.c:574
ksys_read+0xdc/0x1a0 fs/read_write.c:716
__do_sys_read fs/read_write.c:725 [inline]
__se_sys_read fs/read_write.c:723 [inline]
__x64_sys_read+0x40/0x50 fs/read_write.c:723
x64_sys_call+0x2135/0x2550 arch/x86/include/generated/asm/syscalls_64.h:1
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x112/0x360 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
value changed: 0x00000006 -> 0x0000000a
Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 3639 Comm: syz-executor145 Not tainted syzkaller #0 PREEMPT(lazy)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
==================================================================
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title
If you want syzbot to run the reproducer, reply with:
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.
If you want to overwrite report's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)
If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report
If you want to undo deduplication, reply with:
#syz undup
syzbot found the following issue on:
HEAD commit: fddfc3ec3179 Merge tag 'pci-v7.3-fixes-2' of git://git.ker..
git tree: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
console output: https://syzkaller.appspot.com/x/log.txt?x=13118605580000
kernel config: https://syzkaller.appspot.com/x/.config?x=ea1e6d8de13bab08
dashboard link: https://syzkaller.appspot.com/bug?extid=f8dca90855aa9df4c3a0
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15d0d315580000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+f8dca9...@syzkaller.appspotmail.com
==================================================================
BUG: KCSAN: data-race in acpi_ut_exit / acpi_ut_trace_ptr
read to 0xffffffff896258c8 of 4 bytes by task 3638 on cpu 0:
acpi_ut_exit+0xaf/0xf0 drivers/acpi/acpica/utdebug.c:422
acpi_ex_enter_interpreter+0xbb/0xd0 drivers/acpi/acpica/exutils.c:67
acpi_ds_terminate_control_method+0x28e/0x5e0 drivers/acpi/acpica/dsmethod.c:782
acpi_ps_parse_aml+0x68f/0xa10 drivers/acpi/acpica/psparse.c:582
acpi_ps_execute_method+0x4af/0x660 drivers/acpi/acpica/psxface.c:190
acpi_ns_evaluate+0x8ae/0xac0 drivers/acpi/acpica/nseval.c:205
acpi_evaluate_object+0x41b/0x800 drivers/acpi/acpica/nsxfeval.c:354
acpi_evaluate_integer+0x7c/0x120 drivers/acpi/utils.c:260
status_show+0x5d/0xc0 drivers/acpi/device_sysfs.c:539
dev_attr_show+0x3f/0xa0 drivers/base/core.c:2491
sysfs_kf_seq_show+0x1a3/0x280 fs/sysfs/file.c:65
kernfs_seq_show+0x82/0xa0 fs/kernfs/file.c:216
seq_read_iter+0x2d9/0x8f0 fs/seq_file.c:231
kernfs_fop_read_iter+0xbe/0x320 fs/kernfs/file.c:290
new_sync_read fs/read_write.c:493 [inline]
vfs_read+0x699/0x7c0 fs/read_write.c:574
ksys_read+0xdc/0x1a0 fs/read_write.c:716
__do_sys_read fs/read_write.c:725 [inline]
__se_sys_read fs/read_write.c:723 [inline]
__x64_sys_read+0x40/0x50 fs/read_write.c:723
x64_sys_call+0x2135/0x2550 arch/x86/include/generated/asm/syscalls_64.h:1
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x112/0x360 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
read-write to 0xffffffff896258c8 of 4 bytes by task 3639 on cpu 1:
acpi_ut_trace_ptr+0x49/0x180 drivers/acpi/acpica/utdebug.c:306
acpi_ut_get_simple_object_size+0x33/0x2f0 drivers/acpi/acpica/utobject.c:431
acpi_ut_get_object_size+0x144/0x1d0 drivers/acpi/acpica/utobject.c:679
acpi_evaluate_object+0x62c/0x800 drivers/acpi/acpica/nsxfeval.c:394
acpi_evaluate_integer+0x7c/0x120 drivers/acpi/utils.c:260
status_show+0x5d/0xc0 drivers/acpi/device_sysfs.c:539
dev_attr_show+0x3f/0xa0 drivers/base/core.c:2491
sysfs_kf_seq_show+0x1a3/0x280 fs/sysfs/file.c:65
kernfs_seq_show+0x82/0xa0 fs/kernfs/file.c:216
seq_read_iter+0x2d9/0x8f0 fs/seq_file.c:231
kernfs_fop_read_iter+0xbe/0x320 fs/kernfs/file.c:290
new_sync_read fs/read_write.c:493 [inline]
vfs_read+0x699/0x7c0 fs/read_write.c:574
ksys_read+0xdc/0x1a0 fs/read_write.c:716
__do_sys_read fs/read_write.c:725 [inline]
__se_sys_read fs/read_write.c:723 [inline]
__x64_sys_read+0x40/0x50 fs/read_write.c:723
x64_sys_call+0x2135/0x2550 arch/x86/include/generated/asm/syscalls_64.h:1
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x112/0x360 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
value changed: 0x00000009 -> 0x00000003
Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 3639 Comm: syz-executor145 Not tainted syzkaller #0 PREEMPT(lazy)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
==================================================================
==================================================================
BUG: KCSAN: data-race in acpi_ut_exit / acpi_ut_trace
read-write to 0xffffffff896258c8 of 4 bytes by task 3638 on cpu 0:
acpi_ut_trace+0x44/0x180 drivers/acpi/acpica/utdebug.c:268
acpi_evaluate_object+0x60/0x800 drivers/acpi/acpica/nsxfeval.c:173
acpi_evaluate_integer+0x7c/0x120 drivers/acpi/utils.c:260
status_show+0x5d/0xc0 drivers/acpi/device_sysfs.c:539
dev_attr_show+0x3f/0xa0 drivers/base/core.c:2491
sysfs_kf_seq_show+0x1a3/0x280 fs/sysfs/file.c:65
kernfs_seq_show+0x82/0xa0 fs/kernfs/file.c:216
seq_read_iter+0x2d9/0x8f0 fs/seq_file.c:231
kernfs_fop_read_iter+0xbe/0x320 fs/kernfs/file.c:290
new_sync_read fs/read_write.c:493 [inline]
vfs_read+0x699/0x7c0 fs/read_write.c:574
ksys_read+0xdc/0x1a0 fs/read_write.c:716
__do_sys_read fs/read_write.c:725 [inline]
__se_sys_read fs/read_write.c:723 [inline]
__x64_sys_read+0x40/0x50 fs/read_write.c:723
x64_sys_call+0x2135/0x2550 arch/x86/include/generated/asm/syscalls_64.h:1
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x112/0x360 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
write to 0xffffffff896258c8 of 4 bytes by task 3639 on cpu 1:
acpi_ut_exit+0xd5/0xf0 drivers/acpi/acpica/utdebug.c:423
acpi_ds_method_data_init+0x506/0x510 drivers/acpi/acpica/dsmthdat.c:86
acpi_ds_create_walk_state+0xf1/0x1c0 drivers/acpi/acpica/dswstate.c:534
acpi_ps_execute_method+0x24f/0x660 drivers/acpi/acpica/psxface.c:134
acpi_ns_evaluate+0x8ae/0xac0 drivers/acpi/acpica/nseval.c:205
acpi_evaluate_object+0x41b/0x800 drivers/acpi/acpica/nsxfeval.c:354
acpi_evaluate_integer+0x7c/0x120 drivers/acpi/utils.c:260
status_show+0x5d/0xc0 drivers/acpi/device_sysfs.c:539
dev_attr_show+0x3f/0xa0 drivers/base/core.c:2491
sysfs_kf_seq_show+0x1a3/0x280 fs/sysfs/file.c:65
kernfs_seq_show+0x82/0xa0 fs/kernfs/file.c:216
seq_read_iter+0x2d9/0x8f0 fs/seq_file.c:231
kernfs_fop_read_iter+0xbe/0x320 fs/kernfs/file.c:290
new_sync_read fs/read_write.c:493 [inline]
vfs_read+0x699/0x7c0 fs/read_write.c:574
ksys_read+0xdc/0x1a0 fs/read_write.c:716
__do_sys_read fs/read_write.c:725 [inline]
__se_sys_read fs/read_write.c:723 [inline]
__x64_sys_read+0x40/0x50 fs/read_write.c:723
x64_sys_call+0x2135/0x2550 arch/x86/include/generated/asm/syscalls_64.h:1
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x112/0x360 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
value changed: 0x00000005 -> 0x00000008
Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 3639 Comm: syz-executor145 Not tainted syzkaller #0 PREEMPT(lazy)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
==================================================================
==================================================================
BUG: KCSAN: data-race in acpi_ut_status_exit / acpi_ut_trace
read-write to 0xffffffff896258c8 of 4 bytes by task 3638 on cpu 0:
acpi_ut_trace+0x44/0x180 drivers/acpi/acpica/utdebug.c:268
acpi_evaluate_object+0x60/0x800 drivers/acpi/acpica/nsxfeval.c:173
acpi_evaluate_integer+0x7c/0x120 drivers/acpi/utils.c:260
status_show+0x5d/0xc0 drivers/acpi/device_sysfs.c:539
dev_attr_show+0x3f/0xa0 drivers/base/core.c:2491
sysfs_kf_seq_show+0x1a3/0x280 fs/sysfs/file.c:65
kernfs_seq_show+0x82/0xa0 fs/kernfs/file.c:216
seq_read_iter+0x2d9/0x8f0 fs/seq_file.c:231
kernfs_fop_read_iter+0xbe/0x320 fs/kernfs/file.c:290
new_sync_read fs/read_write.c:493 [inline]
vfs_read+0x699/0x7c0 fs/read_write.c:574
ksys_read+0xdc/0x1a0 fs/read_write.c:716
__do_sys_read fs/read_write.c:725 [inline]
__se_sys_read fs/read_write.c:723 [inline]
__x64_sys_read+0x40/0x50 fs/read_write.c:723
x64_sys_call+0x2135/0x2550 arch/x86/include/generated/asm/syscalls_64.h:1
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x112/0x360 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
read to 0xffffffff896258c8 of 4 bytes by task 3639 on cpu 1:
acpi_ut_status_exit+0xd8/0x120 drivers/acpi/acpica/utdebug.c:471
acpi_ds_init_aml_walk+0x174/0x310 drivers/acpi/acpica/dswstate.c:-1
acpi_ps_execute_method+0x2bd/0x660 drivers/acpi/acpica/psxface.c:141
acpi_ns_evaluate+0x8ae/0xac0 drivers/acpi/acpica/nseval.c:205
acpi_evaluate_object+0x41b/0x800 drivers/acpi/acpica/nsxfeval.c:354
acpi_evaluate_integer+0x7c/0x120 drivers/acpi/utils.c:260
status_show+0x5d/0xc0 drivers/acpi/device_sysfs.c:539
dev_attr_show+0x3f/0xa0 drivers/base/core.c:2491
sysfs_kf_seq_show+0x1a3/0x280 fs/sysfs/file.c:65
kernfs_seq_show+0x82/0xa0 fs/kernfs/file.c:216
seq_read_iter+0x2d9/0x8f0 fs/seq_file.c:231
kernfs_fop_read_iter+0xbe/0x320 fs/kernfs/file.c:290
new_sync_read fs/read_write.c:493 [inline]
vfs_read+0x699/0x7c0 fs/read_write.c:574
ksys_read+0xdc/0x1a0 fs/read_write.c:716
__do_sys_read fs/read_write.c:725 [inline]
__se_sys_read fs/read_write.c:723 [inline]
__x64_sys_read+0x40/0x50 fs/read_write.c:723
x64_sys_call+0x2135/0x2550 arch/x86/include/generated/asm/syscalls_64.h:1
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x112/0x360 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
value changed: 0x00000004 -> 0x00000007
Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 3639 Comm: syz-executor145 Not tainted syzkaller #0 PREEMPT(lazy)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
==================================================================
==================================================================
BUG: KCSAN: data-race in acpi_ut_status_exit / acpi_ut_track_stack_ptr
read to 0xffffffff896258c8 of 4 bytes by task 3636 on cpu 0:
acpi_ut_track_stack_ptr+0x5f/0xd0 drivers/acpi/acpica/utdebug.c:73
acpi_get_handle+0x40/0x180 drivers/acpi/acpica/nsxfname.c:53
acpi_has_method+0x46/0x80 drivers/acpi/utils.c:672
acpi_pci_set_power_state+0x5d/0x190 drivers/pci/pci-acpi.c:1084
platform_pci_set_power_state drivers/pci/pci.c:1091 [inline]
pci_power_up+0x40/0x3b0 drivers/pci/pci.c:1339
pci_pm_power_up_and_verify_state+0x29/0x130 drivers/pci/pci.c:3186
pci_pm_default_resume_early drivers/pci/pci-driver.c:614 [inline]
pci_pm_runtime_resume+0x5b/0x170 drivers/pci/pci-driver.c:1406
__rpm_callback+0x2e6/0x6d0 drivers/base/power/runtime.c:406
rpm_callback drivers/base/power/runtime.c:460 [inline]
rpm_resume+0x94e/0xce0 drivers/base/power/runtime.c:939
pm_runtime_forbid+0x84/0xa0 drivers/base/power/runtime.c:1672
control_store+0x6a/0x90 drivers/base/power/sysfs.c:114
dev_attr_store+0x4a/0x70 drivers/base/core.c:2509
sysfs_kf_write+0xfe/0x120 fs/sysfs/file.c:145
kernfs_fop_write_iter+0x1d2/0x2e0 fs/kernfs/file.c:345
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x57f/0x9a0 fs/read_write.c:687
ksys_write+0xdc/0x1a0 fs/read_write.c:739
__do_sys_write fs/read_write.c:750 [inline]
__se_sys_write fs/read_write.c:747 [inline]
__x64_sys_write+0x40/0x50 fs/read_write.c:747
x64_sys_call+0x154e/0x2550 arch/x86/include/generated/asm/syscalls_64.h:2
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x112/0x360 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
write to 0xffffffff896258c8 of 4 bytes by task 3639 on cpu 1:
acpi_ut_status_exit+0xfe/0x120 drivers/acpi/acpica/utdebug.c:472
acpi_ds_restart_control_method+0x2ce/0x2e0 drivers/acpi/acpica/dsmethod.c:-1
acpi_ps_parse_aml+0x906/0xa10 drivers/acpi/acpica/psparse.c:-1
acpi_ps_execute_method+0x4af/0x660 drivers/acpi/acpica/psxface.c:190
acpi_ns_evaluate+0x8ae/0xac0 drivers/acpi/acpica/nseval.c:205
acpi_evaluate_object+0x41b/0x800 drivers/acpi/acpica/nsxfeval.c:354
acpi_evaluate_integer+0x7c/0x120 drivers/acpi/utils.c:260
status_show+0x5d/0xc0 drivers/acpi/device_sysfs.c:539
dev_attr_show+0x3f/0xa0 drivers/base/core.c:2491
sysfs_kf_seq_show+0x1a3/0x280 fs/sysfs/file.c:65
kernfs_seq_show+0x82/0xa0 fs/kernfs/file.c:216
seq_read_iter+0x2d9/0x8f0 fs/seq_file.c:231
kernfs_fop_read_iter+0xbe/0x320 fs/kernfs/file.c:290
new_sync_read fs/read_write.c:493 [inline]
vfs_read+0x699/0x7c0 fs/read_write.c:574
ksys_read+0xdc/0x1a0 fs/read_write.c:716
__do_sys_read fs/read_write.c:725 [inline]
__se_sys_read fs/read_write.c:723 [inline]
__x64_sys_read+0x40/0x50 fs/read_write.c:723
x64_sys_call+0x2135/0x2550 arch/x86/include/generated/asm/syscalls_64.h:1
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x112/0x360 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
value changed: 0x0000000b -> 0x0000000c
Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 3639 Comm: syz-executor145 Not tainted syzkaller #0 PREEMPT(lazy)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
==================================================================
==================================================================
BUG: KCSAN: data-race in acpi_ut_status_exit / acpi_ut_trace_ptr
read-write to 0xffffffff896258c8 of 4 bytes by task 3636 on cpu 0:
acpi_ut_trace_ptr+0x49/0x180 drivers/acpi/acpica/utdebug.c:306
acpi_ns_get_node+0x3c/0xc0 drivers/acpi/acpica/nsutils.c:719
acpi_get_handle+0xfd/0x180 drivers/acpi/acpica/nsxfname.c:98
acpi_has_method+0x46/0x80 drivers/acpi/utils.c:672
acpi_pci_set_power_state+0x5d/0x190 drivers/pci/pci-acpi.c:1084
platform_pci_set_power_state drivers/pci/pci.c:1091 [inline]
pci_power_up+0x40/0x3b0 drivers/pci/pci.c:1339
pci_pm_power_up_and_verify_state+0x29/0x130 drivers/pci/pci.c:3186
pci_pm_default_resume_early drivers/pci/pci-driver.c:614 [inline]
pci_pm_runtime_resume+0x5b/0x170 drivers/pci/pci-driver.c:1406
__rpm_callback+0x2e6/0x6d0 drivers/base/power/runtime.c:406
rpm_callback drivers/base/power/runtime.c:460 [inline]
rpm_resume+0x94e/0xce0 drivers/base/power/runtime.c:939
pm_runtime_forbid+0x84/0xa0 drivers/base/power/runtime.c:1672
control_store+0x6a/0x90 drivers/base/power/sysfs.c:114
dev_attr_store+0x4a/0x70 drivers/base/core.c:2509
sysfs_kf_write+0xfe/0x120 fs/sysfs/file.c:145
kernfs_fop_write_iter+0x1d2/0x2e0 fs/kernfs/file.c:345
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x57f/0x9a0 fs/read_write.c:687
ksys_write+0xdc/0x1a0 fs/read_write.c:739
__do_sys_write fs/read_write.c:750 [inline]
__se_sys_write fs/read_write.c:747 [inline]
__x64_sys_write+0x40/0x50 fs/read_write.c:747
x64_sys_call+0x154e/0x2550 arch/x86/include/generated/asm/syscalls_64.h:2
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x112/0x360 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
read to 0xffffffff896258c8 of 4 bytes by task 3639 on cpu 1:
acpi_ut_status_exit+0xd8/0x120 drivers/acpi/acpica/utdebug.c:471
acpi_ps_next_parse_state+0x2fb/0x310 drivers/acpi/acpica/psparse.c:406
acpi_ps_complete_op+0x1d0/0x780 drivers/acpi/acpica/psobject.c:484
acpi_ps_parse_loop+0x1104/0x1520 drivers/acpi/acpica/psloop.c:580
acpi_ps_parse_aml+0x2b0/0xa10 drivers/acpi/acpica/psparse.c:489
acpi_ps_execute_method+0x4af/0x660 drivers/acpi/acpica/psxface.c:190
acpi_ns_evaluate+0x8ae/0xac0 drivers/acpi/acpica/nseval.c:205
acpi_evaluate_object+0x41b/0x800 drivers/acpi/acpica/nsxfeval.c:354
acpi_evaluate_integer+0x7c/0x120 drivers/acpi/utils.c:260
status_show+0x5d/0xc0 drivers/acpi/device_sysfs.c:539
dev_attr_show+0x3f/0xa0 drivers/base/core.c:2491
sysfs_kf_seq_show+0x1a3/0x280 fs/sysfs/file.c:65
kernfs_seq_show+0x82/0xa0 fs/kernfs/file.c:216
seq_read_iter+0x2d9/0x8f0 fs/seq_file.c:231
kernfs_fop_read_iter+0xbe/0x320 fs/kernfs/file.c:290
new_sync_read fs/read_write.c:493 [inline]
vfs_read+0x699/0x7c0 fs/read_write.c:574
ksys_read+0xdc/0x1a0 fs/read_write.c:716
__do_sys_read fs/read_write.c:725 [inline]
__se_sys_read fs/read_write.c:723 [inline]
__x64_sys_read+0x40/0x50 fs/read_write.c:723
x64_sys_call+0x2135/0x2550 arch/x86/include/generated/asm/syscalls_64.h:1
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x112/0x360 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
value changed: 0x0000000b -> 0x0000000c
Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 3639 Comm: syz-executor145 Not tainted syzkaller #0 PREEMPT(lazy)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
==================================================================
==================================================================
BUG: KCSAN: data-race in acpi_ut_status_exit / acpi_ut_trace
read-write to 0xffffffff896258c8 of 4 bytes by task 3638 on cpu 0:
acpi_ut_trace+0x44/0x180 drivers/acpi/acpica/utdebug.c:268
acpi_evaluate_object+0x60/0x800 drivers/acpi/acpica/nsxfeval.c:173
acpi_evaluate_integer+0x7c/0x120 drivers/acpi/utils.c:260
status_show+0x5d/0xc0 drivers/acpi/device_sysfs.c:539
dev_attr_show+0x3f/0xa0 drivers/base/core.c:2491
sysfs_kf_seq_show+0x1a3/0x280 fs/sysfs/file.c:65
kernfs_seq_show+0x82/0xa0 fs/kernfs/file.c:216
seq_read_iter+0x2d9/0x8f0 fs/seq_file.c:231
kernfs_fop_read_iter+0xbe/0x320 fs/kernfs/file.c:290
new_sync_read fs/read_write.c:493 [inline]
vfs_read+0x699/0x7c0 fs/read_write.c:574
ksys_read+0xdc/0x1a0 fs/read_write.c:716
__do_sys_read fs/read_write.c:725 [inline]
__se_sys_read fs/read_write.c:723 [inline]
__x64_sys_read+0x40/0x50 fs/read_write.c:723
x64_sys_call+0x2135/0x2550 arch/x86/include/generated/asm/syscalls_64.h:1
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x112/0x360 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
write to 0xffffffff896258c8 of 4 bytes by task 3639 on cpu 1:
acpi_ut_status_exit+0xfe/0x120 drivers/acpi/acpica/utdebug.c:472
acpi_ds_init_aml_walk+0x174/0x310 drivers/acpi/acpica/dswstate.c:-1
acpi_ps_execute_method+0x2bd/0x660 drivers/acpi/acpica/psxface.c:141
acpi_ns_evaluate+0x8ae/0xac0 drivers/acpi/acpica/nseval.c:205
acpi_evaluate_object+0x41b/0x800 drivers/acpi/acpica/nsxfeval.c:354
acpi_evaluate_integer+0x7c/0x120 drivers/acpi/utils.c:260
status_show+0x5d/0xc0 drivers/acpi/device_sysfs.c:539
dev_attr_show+0x3f/0xa0 drivers/base/core.c:2491
sysfs_kf_seq_show+0x1a3/0x280 fs/sysfs/file.c:65
kernfs_seq_show+0x82/0xa0 fs/kernfs/file.c:216
seq_read_iter+0x2d9/0x8f0 fs/seq_file.c:231
kernfs_fop_read_iter+0xbe/0x320 fs/kernfs/file.c:290
new_sync_read fs/read_write.c:493 [inline]
vfs_read+0x699/0x7c0 fs/read_write.c:574
ksys_read+0xdc/0x1a0 fs/read_write.c:716
__do_sys_read fs/read_write.c:725 [inline]
__se_sys_read fs/read_write.c:723 [inline]
__x64_sys_read+0x40/0x50 fs/read_write.c:723
x64_sys_call+0x2135/0x2550 arch/x86/include/generated/asm/syscalls_64.h:1
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x112/0x360 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
value changed: 0x00000006 -> 0x0000000a
Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 3639 Comm: syz-executor145 Not tainted syzkaller #0 PREEMPT(lazy)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
==================================================================
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title
If you want syzbot to run the reproducer, reply with:
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.
If you want to overwrite report's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)
If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report
If you want to undo deduplication, reply with:
#syz undup
Reply all
Reply to author
Forward
0 new messages