syzbot |
sign-in | mailing list | source | docs |
================================================================== BUG: KCSAN: data-race in __uart_start / __update_runtime_status write to 0xffff888100e709c4 of 4 bytes by task 3773 on cpu 0: __update_runtime_status+0xef/0x1d0 drivers/base/power/runtime.c:98 rpm_resume+0x9f1/0xd00 drivers/base/power/runtime.c:921 pm_runtime_work+0xe4/0x130 drivers/base/power/runtime.c:979 process_one_work kernel/workqueue.c:3254 [inline] process_scheduled_works+0x465/0x990 kernel/workqueue.c:3335 worker_thread+0x526/0x730 kernel/workqueue.c:3416 kthread+0x1d1/0x210 kernel/kthread.c:388 ret_from_fork+0x4b/0x60 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 read to 0xffff888100e709c4 of 4 bytes by task 4488 on cpu 1: pm_runtime_active include/linux/pm_runtime.h:164 [inline] __uart_start+0x1ab/0x270 drivers/tty/serial/serial_core.c:159 uart_write+0x348/0x450 drivers/tty/serial/serial_core.c:615 do_output_char+0x491/0x500 drivers/tty/n_tty.c:428 process_output drivers/tty/n_tty.c:494 [inline] n_tty_write+0x8cc/0xb90 drivers/tty/n_tty.c:2390 iterate_tty_write drivers/tty/tty_io.c:1021 [inline] file_tty_write+0x386/0x690 drivers/tty/tty_io.c:1096 tty_write+0x28/0x30 drivers/tty/tty_io.c:1117 call_write_iter include/linux/fs.h:2108 [inline] iter_file_splice_write+0x5e6/0x970 fs/splice.c:743 do_splice_from fs/splice.c:941 [inline] direct_splice_actor+0x16c/0x2c0 fs/splice.c:1164 splice_direct_to_actor+0x305/0x670 fs/splice.c:1108 do_splice_direct_actor fs/splice.c:1207 [inline] do_splice_direct+0xd7/0x150 fs/splice.c:1233 do_sendfile+0x3b9/0x970 fs/read_write.c:1295 __do_sys_sendfile64 fs/read_write.c:1362 [inline] __se_sys_sendfile64 fs/read_write.c:1348 [inline] __x64_sys_sendfile64+0x110/0x150 fs/read_write.c:1348 do_syscall_64+0xd3/0x1d0 entry_SYSCALL_64_after_hwframe+0x72/0x7a value changed: 0x00000001 -> 0x00000000 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 4488 Comm: syz-executor.2 Tainted: G W 6.9.0-rc2-syzkaller-00002-g026e680b0a08 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2024/04/02 20:30 | upstream | 026e680b0a08 | eb2966c4 | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-upstream-kcsan-gce | KCSAN: data-race in __uart_start / __update_runtime_status |