loop2: detected capacity change from 0 to 1024
EXT4-fs (loop2): inodes count not valid: 327712 vs 32
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BUG: KCSAN: data-race in exit_signals / get_task_exe_file

write to 0xffff88810667d02c of 4 bytes by task 31718 on cpu 1:
 exit_signals+0xe1/0x4a0 kernel/signal.c:2910
 do_exit+0x194/0x1560 kernel/exit.c:782
 do_group_exit+0x19b/0x1a0 kernel/exit.c:923
 __do_sys_exit_group+0xb/0x10 kernel/exit.c:934
 __se_sys_exit_group+0x5/0x10 kernel/exit.c:932
 __x64_sys_exit_group+0x16/0x20 kernel/exit.c:932
 do_syscall_64+0x4a/0x90 arch/x86/entry/common.c:47
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffff88810667d02c of 4 bytes by task 31721 on cpu 0:
 get_task_exe_file+0x44/0x140 kernel/fork.c:1202
 proc_exe_link+0x44/0x100 fs/proc/base.c:1725
 proc_pid_get_link+0x50/0xb0 fs/proc/base.c:1750
 pick_link fs/namei.c:1736 [inline]
 step_into+0x974/0xec0 fs/namei.c:1798
 open_last_lookups fs/namei.c:3308 [inline]
 path_openat+0xfc8/0x20b0 fs/namei.c:3491
 do_filp_open+0xd9/0x1f0 fs/namei.c:3521
 do_sys_openat2+0xa3/0x250 fs/open.c:1187
 do_sys_open fs/open.c:1203 [inline]
 __do_sys_openat fs/open.c:1219 [inline]
 __se_sys_openat fs/open.c:1214 [inline]
 __x64_sys_openat+0xef/0x110 fs/open.c:1214
 do_syscall_64+0x4a/0x90 arch/x86/entry/common.c:47
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 31721 Comm: syz-executor.2 Not tainted 5.13.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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