syzbot

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BUG: KCSAN: data-race in integrity_iint_find / integrity_inode_get

write to 0xffff888128c91974 of 4 bytes by task 10667 on cpu 1:
 integrity_inode_get+0x10e/0x190 security/integrity/iint.c:124
 process_measurement+0x223/0x1000 security/integrity/ima/ima_main.c:233
 ima_file_check+0x7e/0xb0 security/integrity/ima/ima_main.c:442
 do_last fs/namei.c:3494 [inline]
 path_openat+0xdef/0x2f70 fs/namei.c:3607
 do_filp_open+0x11e/0x1b0 fs/namei.c:3637
 do_sys_openat2+0x4f5/0x620 fs/open.c:1149
 do_sys_open+0xa2/0x110 fs/open.c:1165
 ksys_open include/linux/syscalls.h:1386 [inline]
 __do_sys_open fs/open.c:1171 [inline]
 __se_sys_open fs/open.c:1169 [inline]
 __x64_sys_open+0x50/0x60 fs/open.c:1169
 do_syscall_64+0xc7/0x390 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

read to 0xffff888128c91974 of 4 bytes by task 10661 on cpu 0:
 integrity_iint_find+0x22/0xf0 security/integrity/iint.c:61
 ima_file_free+0xc0/0x280 security/integrity/ima/ima_main.c:185
 __fput+0x15c/0x4f0 fs/file_table.c:274
 ____fput+0x1b/0x30 fs/file_table.c:313
 task_work_run+0xf5/0x130 kernel/task_work.c:113
 get_signal+0x1236/0x1290 kernel/signal.c:2528
 do_signal+0x2b/0x670 arch/x86/kernel/signal.c:813
 exit_to_usermode_loop+0x24a/0x2c0 arch/x86/entry/common.c:160
 prepare_exit_to_usermode arch/x86/entry/common.c:195 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:278 [inline]
 do_syscall_64+0x36e/0x390 arch/x86/entry/common.c:304
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 10661 Comm: syz-executor.1 Not tainted 5.6.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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