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================================================================== BUG: KCSAN: data-race in n_tty_poll / tty_set_termios write to 0xffff888137e6a91e of 1 bytes by task 5945 on cpu 1: unset_locked_termios drivers/tty/tty_ioctl.c:220 [inline] tty_set_termios+0x3a4/0x8a0 drivers/tty/tty_ioctl.c:340 set_termios+0x47e/0x4c0 drivers/tty/tty_ioctl.c:516 tty_mode_ioctl+0x391/0x5d0 n_tty_ioctl_helper+0x8d/0x240 drivers/tty/tty_ioctl.c:986 n_tty_ioctl+0xfd/0x200 drivers/tty/n_tty.c:2511 tty_ioctl+0x875/0xbc0 drivers/tty/tty_io.c:2812 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+0xcd/0x1d0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b read to 0xffff888137e6a91e of 1 bytes by task 9 on cpu 0: input_available_p drivers/tty/n_tty.c:1927 [inline] n_tty_poll+0x217/0x490 drivers/tty/n_tty.c:2458 tty_poll+0x7b/0xf0 drivers/tty/tty_io.c:2214 vfs_poll include/linux/poll.h:88 [inline] p9_fd_poll net/9p/trans_fd.c:237 [inline] p9_poll_mux net/9p/trans_fd.c:629 [inline] p9_poll_workfn+0x1e9/0x410 net/9p/trans_fd.c:1178 process_one_work kernel/workqueue.c:2633 [inline] process_scheduled_works+0x5b8/0xa40 kernel/workqueue.c:2706 worker_thread+0x525/0x730 kernel/workqueue.c:2787 kthread+0x1d7/0x210 kernel/kthread.c:388 ret_from_fork+0x48/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242 value changed: 0x79 -> 0xf2 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 9 Comm: kworker/0:1 Not tainted 6.8.0-rc2-syzkaller-00084-g5c24e4e9e708 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 Workqueue: events p9_poll_workfn ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2024/02/02 03:03 | upstream | 5c24e4e9e708 | d61103fc | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in n_tty_poll / tty_set_termios |