KCSAN: data-race in __tty_hangup / n_tty

Kernel	Title	Rank 🛈	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	KCSAN: data-race in __tty_hangup / n_tty_poll (3) serial	6				1	381d	381d	0/29	auto-obsoleted due to no activity on 2024/10/08 23:58
upstream	KCSAN: data-race in __tty_hangup / n_tty_poll (2) serial	6				1	1825d	1825d	0/29	auto-closed as invalid on 2020/10/25 07:28

================================================================== BUG: KCSAN: data-race in __tty_hangup / n_tty_poll read to 0xffff8880a25369e4 of 1 bytes by task 558 on cpu 1: n_tty_poll+0x20f/0x4e0 drivers/tty/n_tty.c:2416 tty_poll+0xcb/0xf0 drivers/tty/tty_io.c:2112 vfs_poll include/linux/poll.h:90 [inline] do_pollfd fs/select.c:859 [inline] do_poll fs/select.c:907 [inline] do_sys_poll+0x4ac/0x990 fs/select.c:1001 __do_sys_ppoll fs/select.c:1101 [inline] __se_sys_ppoll fs/select.c:1081 [inline] __x64_sys_ppoll+0x156/0x190 fs/select.c:1081 do_syscall_64+0xc7/0x3b0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x44/0xa9 write to 0xffff8880a25369e4 of 11 bytes by task 565 on cpu 0: __tty_hangup+0x357/0x440 drivers/tty/tty_io.c:634 tty_vhangup drivers/tty/tty_io.c:698 [inline] tty_ioctl+0x395/0xd80 drivers/tty/tty_io.c:2597 vfs_ioctl fs/ioctl.c:47 [inline] ksys_ioctl+0x101/0x150 fs/ioctl.c:763 __do_sys_ioctl fs/ioctl.c:772 [inline] __se_sys_ioctl fs/ioctl.c:770 [inline] __x64_sys_ioctl+0x47/0x60 fs/ioctl.c:770 do_syscall_64+0xc7/0x3b0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 565 Comm: syz-executor.3 Not tainted 5.7.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================