syzbot

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BUG: KCSAN: data-race in inode_doinit_with_dentry / inode_doinit_with_dentry

write to 0xffff88813f0103ea of 1 bytes by task 22297 on cpu 0:
 inode_doinit_with_dentry+0x286/0x7a0 security/selinux/hooks.c:1448
 __inode_security_revalidate security/selinux/hooks.c:300 [inline]
 inode_security security/selinux/hooks.c:325 [inline]
 selinux_file_open+0xef/0x370 security/selinux/hooks.c:3985
 security_file_open+0x36/0x70 security/security.c:3114
 do_dentry_open+0x204/0xa20 fs/open.c:933
 vfs_open+0x37/0x1e0 fs/open.c:1086
 dentry_open+0x4a/0x90 fs/open.c:1109
 pidfs_alloc_file+0x12f/0x200 fs/pidfs.c:891
 __pidfd_prepare kernel/fork.c:2074 [inline]
 pidfd_prepare+0x66/0xd0 kernel/fork.c:2116
 pidfd_create kernel/pid.c:627 [inline]
 __do_sys_pidfd_open kernel/pid.c:663 [inline]
 __se_sys_pidfd_open+0x133/0x260 kernel/pid.c:648
 __x64_sys_pidfd_open+0x31/0x40 kernel/pid.c:648
 x64_sys_call+0x2a5f/0x2fb0 arch/x86/include/generated/asm/syscalls_64.h:435
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd0/0x1a0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

read to 0xffff88813f0103ea of 1 bytes by task 22296 on cpu 1:
 inode_doinit_with_dentry+0x75/0x7a0 security/selinux/hooks.c:1423
 __inode_security_revalidate security/selinux/hooks.c:300 [inline]
 inode_security security/selinux/hooks.c:325 [inline]
 selinux_file_open+0xef/0x370 security/selinux/hooks.c:3985
 security_file_open+0x36/0x70 security/security.c:3114
 do_dentry_open+0x204/0xa20 fs/open.c:933
 vfs_open+0x37/0x1e0 fs/open.c:1086
 dentry_open+0x4a/0x90 fs/open.c:1109
 pidfs_alloc_file+0x12f/0x200 fs/pidfs.c:891
 __pidfd_prepare kernel/fork.c:2074 [inline]
 pidfd_prepare+0x66/0xd0 kernel/fork.c:2116
 pidfd_create kernel/pid.c:627 [inline]
 __do_sys_pidfd_open kernel/pid.c:663 [inline]
 __se_sys_pidfd_open+0x133/0x260 kernel/pid.c:648
 __x64_sys_pidfd_open+0x31/0x40 kernel/pid.c:648
 x64_sys_call+0x2a5f/0x2fb0 arch/x86/include/generated/asm/syscalls_64.h:435
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd0/0x1a0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

value changed: 0x00 -> 0x01

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 UID: 0 PID: 22296 Comm: syz.5.6002 Tainted: G        W           6.15.0-rc5-syzkaller-00032-g0d8d44db295c #0 PREEMPT(voluntary) 
Tainted: [W]=WARN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
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