================================================================== BUG: KCSAN: data-race in isig / pty_close write to 0xffff888108abd5d9 of 1 bytes by task 11625 on cpu 1: pty_close+0x120/0x280 drivers/tty/pty.c:61 tty_release+0x255/0xa00 drivers/tty/tty_io.c:1758 __fput+0x295/0x520 fs/file_table.c:317 ____fput+0x11/0x20 fs/file_table.c:350 task_work_run+0x8e/0x110 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_user_mode_loop kernel/entry/common.c:175 [inline] exit_to_user_mode_prepare+0x160/0x190 kernel/entry/common.c:207 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline] syscall_exit_to_user_mode+0x20/0x40 kernel/entry/common.c:300 do_syscall_64+0x50/0xd0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff888108abd5d9 of 1 bytes by task 11631 on cpu 0: n_tty_packet_mode_flush drivers/tty/n_tty.c:342 [inline] isig+0x1b5/0x280 drivers/tty/n_tty.c:1123 n_tty_receive_signal_char drivers/tty/n_tty.c:1213 [inline] n_tty_receive_char_special drivers/tty/n_tty.c:1241 [inline] n_tty_receive_buf_standard drivers/tty/n_tty.c:1530 [inline] __receive_buf drivers/tty/n_tty.c:1549 [inline] n_tty_receive_buf_common+0x12c5/0x4e70 drivers/tty/n_tty.c:1645 n_tty_receive_buf+0x2b/0x40 drivers/tty/n_tty.c:1674 tiocsti drivers/tty/tty_io.c:2293 [inline] tty_ioctl+0x978/0x1130 drivers/tty/tty_io.c:2692 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl+0xcb/0x140 fs/ioctl.c:860 __x64_sys_ioctl+0x3f/0x50 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x01 -> 0x00 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 11631 Comm: syz-executor.4 Not tainted 5.17.0-rc6-syzkaller-00048-g575115360652-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================