==================================================================
BUG: KCSAN: data-race in bprm_execve / copy_process

write to 0xffff8881013cd490 of 4 bytes by task 13533 on cpu 1:
 bprm_execve+0x584/0x620 fs/exec.c:1845
 do_execveat_common+0x60c/0x6c0 fs/exec.c:1915
 do_execve fs/exec.c:1983 [inline]
 __do_sys_execve fs/exec.c:2059 [inline]
 __se_sys_execve fs/exec.c:2054 [inline]
 __x64_sys_execve+0x56/0x70 fs/exec.c:2054
 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

read to 0xffff8881013cd490 of 4 bytes by task 13532 on cpu 0:
 copy_fs kernel/fork.c:1432 [inline]
 copy_process+0xd01/0x2d70 kernel/fork.c:2086
 kernel_clone+0x14b/0x680 kernel/fork.c:2456
 __do_sys_clone kernel/fork.c:2573 [inline]
 __se_sys_clone kernel/fork.c:2557 [inline]
 __x64_sys_clone+0xc8/0xf0 kernel/fork.c:2557
 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 13532 Comm: syz-executor.4 Not tainted 5.10.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 13532 Comm: syz-executor.4 Not tainted 5.10.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x116/0x15d lib/dump_stack.c:118
 panic+0x1e7/0x5fa kernel/panic.c:231
 kcsan_report+0x67b/0x680 kernel/kcsan/report.c:634
 kcsan_setup_watchpoint+0x46a/0x4d0 kernel/kcsan/core.c:568
 copy_fs kernel/fork.c:1432 [inline]
 copy_process+0xd01/0x2d70 kernel/fork.c:2086
 kernel_clone+0x14b/0x680 kernel/fork.c:2456
 __do_sys_clone kernel/fork.c:2573 [inline]
 __se_sys_clone kernel/fork.c:2557 [inline]
 __x64_sys_clone+0xc8/0xf0 kernel/fork.c:2557
 do_syscall_64+0x39/0x80 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x460b29
Code: ff 48 85 f6 0f 84 37 8a fb ff 48 83 ee 10 48 89 4e 08 48 89 3e 48 89 d7 4c 89 c2 4d 89 c8 4c 8b 54 24 08 b8 38 00 00 00 0f 05 <48> 85 c0 0f 8c 0e 8a fb ff 74 01 c3 31 ed 48 f7 c7 00 00 01 00 75
RSP: 002b:00007ffd2fa3a2f8 EFLAGS: 00000202 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f1eca474700 RCX: 0000000000460b29
RDX: 00007f1eca4749d0 RSI: 00007f1eca473db0 RDI: 00000000003d0f00
RBP: 00007ffd2fa3a510 R08: 00007f1eca474700 R09: 00007f1eca474700
R10: 00007f1eca4749d0 R11: 0000000000000202 R12: 0000000000000000
R13: 00007ffd2fa3a3af R14: 0000000000020000 R15: 0000000003568db0
Kernel Offset: disabled
Rebooting in 86400 seconds..