==================================================================
BUG: KCSAN: data-race in dev_uevent / really_probe

write to 0xffff888102ba48b8 of 8 bytes by task 12174 on cpu 1:
 really_probe+0x9a/0x620 drivers/base/dd.c:632
 __driver_probe_device+0x12d/0x200 drivers/base/dd.c:800
 driver_probe_device+0x38/0x2f0 drivers/base/dd.c:830
 __device_attach_driver+0x213/0x310 drivers/base/dd.c:958
 bus_for_each_drv+0x1ca/0x240 drivers/base/bus.c:457
 __device_attach+0x1c3/0x290 drivers/base/dd.c:1030
 device_attach+0x17/0x20 drivers/base/dd.c:1073
 proc_ioctl+0x332/0x3f0 drivers/usb/core/devio.c:2365
 usbdev_ioctl+0x1f07/0x3e00 drivers/usb/core/devio.c:2824
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:871 [inline]
 __se_sys_ioctl+0xcf/0x140 fs/ioctl.c:857
 __x64_sys_ioctl+0x43/0x50 fs/ioctl.c:857
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x59/0x120 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

read to 0xffff888102ba48b8 of 8 bytes by task 3276 on cpu 0:
 dev_uevent+0x235/0x360 drivers/base/core.c:2575
 uevent_show+0x102/0x1e0 drivers/base/core.c:2647
 dev_attr_show+0x39/0x90 drivers/base/core.c:2350
 sysfs_kf_seq_show+0x179/0x240 fs/sysfs/file.c:59
 kernfs_seq_show+0x78/0x90 fs/kernfs/file.c:205
 seq_read_iter+0x2bc/0x8f0 fs/seq_file.c:230
 kernfs_fop_read_iter+0xc8/0x2e0 fs/kernfs/file.c:279
 call_read_iter include/linux/fs.h:2079 [inline]
 new_sync_read fs/read_write.c:395 [inline]
 vfs_read+0x5ab/0x6a0 fs/read_write.c:476
 ksys_read+0xeb/0x1a0 fs/read_write.c:619
 __do_sys_read fs/read_write.c:629 [inline]
 __se_sys_read fs/read_write.c:627 [inline]
 __x64_sys_read+0x42/0x50 fs/read_write.c:627
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x59/0x120 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b

value changed: 0x0000000000000000 -> 0xffffffff85eca5b0

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 3276 Comm: udevd Not tainted 6.8.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
==================================================================