Hello, syzbot found the following issue on: HEAD commit: a7f2e10ecd8f Merge tag 'hwmon-fixes-for-v6.14-rc8/6.14' of.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=114fee98580000 kernel config: https://syzkaller.appspot.com/x/.config?x=f33d372c4021745 dashboard link: https://syzkaller.appspot.com/bug?extid=1c486d0b62032c82a968 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/614aabc71b48/disk-a7f2e10e.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/d47dd90a010a/vmlinux-a7f2e10e.xz kernel image: https://storage.googleapis.com/syzbot-assets/418d8cf8782b/bzImage-a7f2e10e.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+1c486d0b62032c82a968@xxxxxxxxxxxxxxxxxxxxxxxxx ================================================================== BUG: KCSAN: data-race in bprm_execve / copy_fs write to 0xffff8881044f8250 of 4 bytes by task 13692 on cpu 0: bprm_execve+0x748/0x9c0 fs/exec.c:1884 do_execveat_common+0x769/0x7e0 fs/exec.c:1966 do_execveat fs/exec.c:2051 [inline] __do_sys_execveat fs/exec.c:2125 [inline] __se_sys_execveat fs/exec.c:2119 [inline] __x64_sys_execveat+0x75/0x90 fs/exec.c:2119 x64_sys_call+0x291e/0x2dc0 arch/x86/include/generated/asm/syscalls_64.h:323 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f read to 0xffff8881044f8250 of 4 bytes by task 13686 on cpu 1: copy_fs+0x95/0xf0 kernel/fork.c:1770 copy_process+0xc91/0x1f50 kernel/fork.c:2394 kernel_clone+0x167/0x5e0 kernel/fork.c:2815 __do_sys_clone3 kernel/fork.c:3119 [inline] __se_sys_clone3+0x1c1/0x200 kernel/fork.c:3098 __x64_sys_clone3+0x31/0x40 kernel/fork.c:3098 x64_sys_call+0x2d56/0x2dc0 arch/x86/include/generated/asm/syscalls_64.h:436 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f value changed: 0x00000001 -> 0x00000000 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 13686 Comm: syz.1.3826 Not tainted 6.14.0-rc7-syzkaller-00074-ga7f2e10ecd8f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 ================================================================== --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
