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BUG: KCSAN: data-race in do_fcntl / do_fcntl
read-write to 0xffff888137108648 of 4 bytes by task 13328 on cpu 0:
setfl fs/fcntl.c:81 [inline]
do_fcntl+0xde9/0xeb0 fs/fcntl.c:342
__do_sys_fcntl fs/fcntl.c:456 [inline]
__se_sys_fcntl+0xc4/0x180 fs/fcntl.c:441
__x64_sys_fcntl+0x43/0x50 fs/fcntl.c:441
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x1d0 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
read to 0xffff888137108648 of 4 bytes by task 13327 on cpu 1:
setfl fs/fcntl.c:73 [inline]
do_fcntl+0xc55/0xeb0 fs/fcntl.c:342
__do_sys_fcntl fs/fcntl.c:456 [inline]
__se_sys_fcntl+0xc4/0x180 fs/fcntl.c:441
__x64_sys_fcntl+0x43/0x50 fs/fcntl.c:441
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x1d0 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
value changed: 0x00048000 -> 0x0004cc00
Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 13327 Comm: syz-executor.1 Not tainted 6.8.0-rc2-syzkaller-00084-g5c24e4e9e708 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
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