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================================================================== BUG: KCSAN: data-race in do_con_write / stop_tty write to 0xffff88813a6225bc of 1 bytes by task 5502 on cpu 1: __stop_tty drivers/tty/tty_io.c:768 [inline] stop_tty+0x54/0xb0 drivers/tty/tty_io.c:794 n_tty_receive_char_special drivers/tty/n_tty.c:1274 [inline] n_tty_receive_buf_standard drivers/tty/n_tty.c:1558 [inline] __receive_buf drivers/tty/n_tty.c:1577 [inline] n_tty_receive_buf_common+0x110d/0x4e70 drivers/tty/n_tty.c:1674 n_tty_receive_buf+0x2b/0x40 drivers/tty/n_tty.c:1703 tiocsti drivers/tty/tty_io.c:2310 [inline] tty_ioctl+0x969/0x1130 drivers/tty/tty_io.c:2719 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+0x44/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff88813a6225bc of 1 bytes by task 5497 on cpu 0: do_con_write+0x2055/0x5f40 drivers/tty/vt/vt.c:2931 con_write+0x20/0x40 drivers/tty/vt/vt.c:3295 process_output_block drivers/tty/n_tty.c:592 [inline] n_tty_write+0x77b/0xaf0 drivers/tty/n_tty.c:2288 do_tty_write drivers/tty/tty_io.c:1038 [inline] file_tty_write+0x409/0x660 drivers/tty/tty_io.c:1110 tty_write+0x24/0x30 drivers/tty/tty_io.c:1131 call_write_iter include/linux/fs.h:2162 [inline] do_iter_readv_writev+0x2de/0x380 fs/read_write.c:725 do_iter_write+0x192/0x5c0 fs/read_write.c:851 vfs_writev fs/read_write.c:924 [inline] do_writev+0x250/0x4d0 fs/read_write.c:967 __do_sys_writev fs/read_write.c:1040 [inline] __se_sys_writev fs/read_write.c:1037 [inline] __x64_sys_writev+0x41/0x50 fs/read_write.c:1037 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x00 -> 0x01 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 5497 Comm: syz-executor.4 Not tainted 5.15.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2021/11/09 11:47 | upstream | e851dfae4371 | 8ab17e57 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in do_con_write / stop_tty | |||
2021/11/08 21:10 | upstream | e851dfae4371 | d29682f1 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in do_con_write / stop_tty | |||
2021/10/31 14:45 | upstream | 180eca540ae0 | 098b5d53 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in do_con_write / stop_tty | |||
2021/09/29 11:08 | upstream | a4e6f95a891a | e08fe937 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in do_con_write / stop_tty | |||
2021/09/12 13:56 | upstream | 78e709522d2c | 3ce60af8 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in do_con_write / stop_tty | |||
2021/09/09 22:29 | upstream | a3fa7a101dcf | e2776ee4 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in do_con_write / stop_tty | |||
2021/09/07 00:20 | upstream | 4b93c544e90e | 6ca60148 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in do_con_write / stop_tty |