Hello, syzbot found the following issue on: HEAD commit: aa0743a22936 Merge tag 'net-6.11-rc5' of git://git.kernel... git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=12609bd5980000 kernel config: https://syzkaller.appspot.com/x/.config?x=3aa0f597417bf8c7 dashboard link: https://syzkaller.appspot.com/bug?extid=319ed1769c0078257262 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/5e2399df8c24/disk-aa0743a2.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/32d04570bb63/vmlinux-aa0743a2.xz kernel image: https://storage.googleapis.com/syzbot-assets/153aaf559bf9/bzImage-aa0743a2.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+319ed1769c0078257262@xxxxxxxxxxxxxxxxxxxxxxxxx ================================================================== BUG: KCSAN: data-race in inode_doinit_with_dentry / selinux_file_open write to 0xffff888114a3392a of 1 bytes by task 5741 on cpu 0: inode_doinit_with_dentry+0x29c/0x840 security/selinux/hooks.c:1443 __inode_security_revalidate security/selinux/hooks.c:295 [inline] inode_security security/selinux/hooks.c:320 [inline] selinux_file_open+0x101/0x3b0 security/selinux/hooks.c:3979 security_file_open+0x3a/0x70 security/security.c:2988 do_dentry_open+0x22e/0xa50 fs/open.c:946 vfs_open+0x3b/0x1f0 fs/open.c:1089 dentry_open+0x4a/0x90 fs/open.c:1112 pidfs_alloc_file+0xe6/0x150 fs/pidfs.c:404 __pidfd_prepare kernel/fork.c:2013 [inline] pidfd_prepare+0xa0/0x120 kernel/fork.c:2074 pidfd_create kernel/pid.c:608 [inline] __do_sys_pidfd_open kernel/pid.c:644 [inline] __se_sys_pidfd_open+0x123/0x240 kernel/pid.c:629 __x64_sys_pidfd_open+0x31/0x40 kernel/pid.c:629 x64_sys_call+0x2873/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:435 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 0xffff888114a3392a of 1 bytes by task 5740 on cpu 1: __inode_security_revalidate security/selinux/hooks.c:286 [inline] inode_security security/selinux/hooks.c:320 [inline] selinux_file_open+0xce/0x3b0 security/selinux/hooks.c:3979 security_file_open+0x3a/0x70 security/security.c:2988 do_dentry_open+0x22e/0xa50 fs/open.c:946 vfs_open+0x3b/0x1f0 fs/open.c:1089 dentry_open+0x4a/0x90 fs/open.c:1112 pidfs_alloc_file+0xe6/0x150 fs/pidfs.c:404 __pidfd_prepare kernel/fork.c:2013 [inline] pidfd_prepare+0xa0/0x120 kernel/fork.c:2074 pidfd_create kernel/pid.c:608 [inline] __do_sys_pidfd_open kernel/pid.c:644 [inline] __se_sys_pidfd_open+0x123/0x240 kernel/pid.c:629 __x64_sys_pidfd_open+0x31/0x40 kernel/pid.c:629 x64_sys_call+0x2873/0x2d60 arch/x86/include/generated/asm/syscalls_64.h:435 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: 0x00 -> 0x01 Reported by Kernel Concurrency Sanitizer on: CPU: 1 UID: 0 PID: 5740 Comm: syz.0.725 Not tainted 6.11.0-rc4-syzkaller-00135-gaa0743a22936 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 ================================================================== netlink: 16 bytes leftover after parsing attributes in process `syz.0.725'. --- 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
