loop3: p251 start 37376 is beyond EOD, truncated
loop3: p252 size 1073741824 extends beyond EOD, truncated
loop3: p253 size 32768 extends beyond EOD, truncated
loop3: p254 start 37376 is beyond EOD, truncated
loop3: p255 size 1073741824 extends beyond EOD, truncated
==================================================================
BUG: KCSAN: data-race in blkdev_get_by_dev / blkdev_put

write to 0xffff8881004246e8 of 4 bytes by task 1438 on cpu 0:
 blkdev_get_by_dev+0x9a6/0xc60
 blkdev_open+0xb3/0x140 block/fops.c:501
 do_dentry_open+0x52c/0x860 fs/open.c:824
 vfs_open+0x43/0x50 fs/open.c:959
 do_open fs/namei.c:3476 [inline]
 path_openat+0x170c/0x1f30 fs/namei.c:3609
 do_filp_open+0x105/0x220 fs/namei.c:3636
 do_sys_openat2+0xb5/0x2b0 fs/open.c:1214
 do_sys_open fs/open.c:1230 [inline]
 __do_sys_openat fs/open.c:1246 [inline]
 __se_sys_openat fs/open.c:1241 [inline]
 __x64_sys_openat+0xef/0x110 fs/open.c:1241
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffff8881004246e8 of 4 bytes by task 21503 on cpu 1:
 blkdev_put+0x3b/0x4a0 block/bdev.c:902
 blkdev_close+0x32/0x40 block/fops.c:515
 __fput+0x295/0x520 fs/file_table.c:317
 ____fput+0x11/0x20 fs/file_table.c:350
 task_work_run+0x8e/0x110 kernel/task_work.c:164
 get_signal+0x1570/0x15b0 kernel/signal.c:2671
 arch_do_signal_or_restart+0x8c/0x2e0 arch/x86/kernel/signal.c:868
 handle_signal_work kernel/entry/common.c:149 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:187 [inline]
 exit_to_user_mode_prepare+0x10e/0x180 kernel/entry/common.c:222
 __syscall_exit_to_user_mode_work kernel/entry/common.c:304 [inline]
 syscall_exit_to_user_mode+0x20/0x40 kernel/entry/common.c:315
 do_syscall_64+0x37/0x70 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x44/0xae

value changed: 0x00000001 -> 0x00000002

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 21503 Comm: syz-executor.3 Not tainted 5.17.0-syzkaller-07593-g52deda9551a0-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
==================================================================