syzbot

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BUG: KCSAN: data-race in usbdev_ioctl / usbdev_ioctl

write to 0xffff8881020f63d0 of 4 bytes by task 29105 on cpu 0:
 inode_set_atime_to_ts include/linux/fs.h:1610 [inline]
 usbdev_do_ioctl drivers/usb/core/devio.c:2815 [inline]
 usbdev_ioctl+0x6b6/0x3e00 drivers/usb/core/devio.c:2824
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl+0xcd/0x140 fs/ioctl.c:893
 __x64_sys_ioctl+0x43/0x50 fs/ioctl.c:893
 x64_sys_call+0x15cc/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:17
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

write to 0xffff8881020f63d0 of 4 bytes by task 29106 on cpu 1:
 inode_set_atime_to_ts include/linux/fs.h:1610 [inline]
 usbdev_do_ioctl drivers/usb/core/devio.c:2815 [inline]
 usbdev_ioctl+0x6b6/0x3e00 drivers/usb/core/devio.c:2824
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl+0xcd/0x140 fs/ioctl.c:893
 __x64_sys_ioctl+0x43/0x50 fs/ioctl.c:893
 x64_sys_call+0x15cc/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:17
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x1908a987 -> 0x1c039a07

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 29106 Comm: syz.1.8850 Not tainted 6.12.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
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