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================================================================== BUG: KCSAN: data-race in __process_echoes / n_tty_write write to 0xffffc9000cf55280 of 8 bytes by task 6715 on cpu 1: __process_echoes+0x688/0x6a0 drivers/tty/n_tty.c:746 flush_echoes drivers/tty/n_tty.c:807 [inline] __receive_buf drivers/tty/n_tty.c:1632 [inline] n_tty_receive_buf_common+0x8e6/0xbc0 drivers/tty/n_tty.c:1729 n_tty_receive_buf2+0x33/0x40 drivers/tty/n_tty.c:1775 tty_ldisc_receive_buf+0x60/0xe0 drivers/tty/tty_buffer.c:386 tty_port_default_receive_buf+0x59/0x90 drivers/tty/tty_port.c:37 receive_buf drivers/tty/tty_buffer.c:444 [inline] flush_to_ldisc+0x1ca/0x400 drivers/tty/tty_buffer.c:494 process_one_work kernel/workqueue.c:2627 [inline] process_scheduled_works+0x5b8/0xa30 kernel/workqueue.c:2700 worker_thread+0x525/0x730 kernel/workqueue.c:2781 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 read to 0xffffc9000cf55280 of 8 bytes by task 11140 on cpu 0: process_echoes drivers/tty/n_tty.c:784 [inline] n_tty_write+0x171/0xb60 drivers/tty/n_tty.c:2365 iterate_tty_write drivers/tty/tty_io.c:1021 [inline] file_tty_write+0x382/0x680 drivers/tty/tty_io.c:1092 tty_write+0x28/0x30 drivers/tty/tty_io.c:1113 call_write_iter include/linux/fs.h:2020 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x48a/0x790 fs/read_write.c:584 ksys_write+0xeb/0x1a0 fs/read_write.c:637 __do_sys_write fs/read_write.c:649 [inline] __se_sys_write fs/read_write.c:646 [inline] __x64_sys_write+0x42/0x50 fs/read_write.c:646 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b value changed: 0x0000000000000046 -> 0x000000000000004a Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 11140 Comm: syz-executor.1 Not tainted 6.7.0-rc4-syzkaller-00384-gb10a3ccaf6e3 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2023/12/10 04:01 | upstream | b10a3ccaf6e3 | 28b24332 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in __process_echoes / n_tty_write | ||
2023/11/20 14:36 | upstream | 98b1cc82c4af | cb976f63 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in __process_echoes / n_tty_write | ||
2023/11/08 15:02 | upstream | 305230142ae0 | b93f63e8 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in __process_echoes / n_tty_write | ||
2023/10/20 00:04 | upstream | 7cf4bea77ab6 | 42e1d524 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in __process_echoes / n_tty_write | ||
2023/10/17 08:00 | upstream | 213f891525c2 | 342b9c55 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in __process_echoes / n_tty_write | ||
2023/09/26 19:46 | upstream | 50768a425b46 | 0b6a67ac | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in __process_echoes / n_tty_write | ||
2023/09/22 14:33 | upstream | 27bbf45eae9c | 0b6a67ac | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in __process_echoes / n_tty_write | ||
2023/09/20 15:17 | upstream | 2cf0f7156238 | 0b6a67ac | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in __process_echoes / n_tty_write | ||
2023/09/18 04:00 | upstream | ce9ecca0238b | 0b6a67ac | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in __process_echoes / n_tty_write | ||
2023/08/29 05:54 | upstream | 727dbda16b83 | 7ba13a15 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in __process_echoes / n_tty_write |