syzbot

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BUG: KCSAN: data-race in __pm_runtime_resume / pm_runtime_work

write to 0xffff888101d9f268 of 2 bytes by task 3663 on cpu 1:
 pm_runtime_work+0x90/0x130 drivers/base/power/runtime.c:989
 process_one_work kernel/workqueue.c:3257 [inline]
 process_scheduled_works+0x4ce/0x9d0 kernel/workqueue.c:3340
 worker_thread+0x582/0x770 kernel/workqueue.c:3421
 kthread+0x489/0x510 kernel/kthread.c:463
 ret_from_fork+0x149/0x290 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246

read to 0xffff888101d9f268 of 2 bytes by task 5506 on cpu 0:
 __pm_runtime_resume+0x35/0x100 drivers/base/power/runtime.c:1190
 pm_runtime_get_active include/linux/pm_runtime.h:520 [inline]
 pm_runtime_resume_and_get include/linux/pm_runtime.h:539 [inline]
 usb_autoresume_device+0x23/0xc0 drivers/usb/core/driver.c:1760
 usbdev_open+0x121/0x450 drivers/usb/core/devio.c:1058
 chrdev_open+0x2eb/0x3a0 fs/char_dev.c:414
 do_dentry_open+0x54b/0xa60 fs/open.c:962
 vfs_open+0x37/0x1e0 fs/open.c:1094
 do_open fs/namei.c:4628 [inline]
 path_openat+0x1ddd/0x23b0 fs/namei.c:4787
 do_filp_open+0x109/0x230 fs/namei.c:4814
 do_sys_openat2+0xa6/0x150 fs/open.c:1430
 do_sys_open fs/open.c:1436 [inline]
 __do_sys_openat fs/open.c:1452 [inline]
 __se_sys_openat fs/open.c:1447 [inline]
 __x64_sys_openat+0xf2/0x120 fs/open.c:1447
 x64_sys_call+0x2b07/0x3000 arch/x86/include/generated/asm/syscalls_64.h:258
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xca/0x2b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x0890 -> 0x0888

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 UID: 0 PID: 5506 Comm: syz.0.639 Not tainted syzkaller #0 PREEMPT(voluntary) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
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