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================================================================== BUG: KCSAN: data-race in __tty_hangup / filp_close write to 0xffff88813904ea28 of 8 bytes by task 7614 on cpu 0: __tty_hangup+0x22a/0x5b0 drivers/tty/tty_io.c:628 tty_vhangup+0x13/0x20 drivers/tty/tty_io.c:707 pty_close+0x25e/0x280 drivers/tty/pty.c:79 tty_release+0x255/0x9d0 drivers/tty/tty_io.c:1758 __fput+0x292/0x510 fs/file_table.c:317 ____fput+0x11/0x20 fs/file_table.c:350 task_work_run+0x8e/0x110 kernel/task_work.c:164 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0x124/0x130 kernel/entry/common.c:169 exit_to_user_mode_prepare kernel/entry/common.c:201 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x6a/0x90 kernel/entry/common.c:294 do_syscall_64+0x37/0x70 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff88813904ea28 of 8 bytes by task 7597 on cpu 1: filp_close+0x42/0xf0 fs/open.c:1322 do_dup2+0x224/0x240 fs/file.c:1140 ksys_dup3+0x157/0x1d0 fs/file.c:1257 __do_sys_dup3 fs/file.c:1268 [inline] __se_sys_dup3 fs/file.c:1266 [inline] __x64_sys_dup3+0x3b/0x50 fs/file.c:1266 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0xffffffff84eaf6b8 -> 0xffffffff84eaf5b8 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 7597 Comm: syz-executor.3 Not tainted 5.18.0-rc4-syzkaller-00036-gcf424ef014ac-dirty #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 |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2022/04/27 04:59 | upstream | cf424ef014ac | 1fa34c1b | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in __tty_hangup / filp_close |