================================================================== BUG: KCSAN: data-race in rcu_gp_fqs_check_wake / rcu_preempt_deferred_qs_irqrestore write to 0xffffffff85c7d0d0 of 8 bytes by task 8007 on cpu 1: rcu_preempt_deferred_qs_irqrestore+0x43d/0x580 kernel/rcu/tree_plugin.h:496 rcu_read_unlock_special kernel/rcu/tree_plugin.h:644 [inline] __rcu_read_unlock+0x16a/0x3d0 kernel/rcu/tree_plugin.h:383 rcu_read_unlock include/linux/rcupdate.h:670 [inline] ext4_data_block_valid+0x7a/0xb0 fs/ext4/block_validity.c:356 __check_block_validity.constprop.0+0xd9/0x160 fs/ext4/inode.c:389 ext4_map_blocks+0xbaa/0xff0 fs/ext4/inode.c:579 ext4_getblk+0x30b/0x380 fs/ext4/inode.c:827 ext4_bread_batch+0x8a/0x370 fs/ext4/inode.c:897 __ext4_find_entry+0x32f/0x970 fs/ext4/namei.c:1518 ext4_find_entry+0xc5/0x140 fs/ext4/namei.c:1596 ext4_unlink fs/ext4/namei.c:3176 [inline] ext4_unlink+0xf8/0x7d0 fs/ext4/namei.c:3154 vfs_unlink+0x225/0x3e0 fs/namei.c:4003 do_unlinkat+0x32b/0x530 fs/namei.c:4067 __do_sys_unlink fs/namei.c:4114 [inline] __se_sys_unlink fs/namei.c:4112 [inline] __x64_sys_unlink+0x3b/0x50 fs/namei.c:4112 do_syscall_64+0xcc/0x3a0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffffffff85c7d0d0 of 8 bytes by task 10 on cpu 0: rcu_gp_fqs_check_wake kernel/rcu/tree.c:1606 [inline] rcu_gp_fqs_check_wake+0x93/0xd0 kernel/rcu/tree.c:1596 rcu_gp_fqs_loop+0x39d/0x580 kernel/rcu/tree.c:1661 rcu_gp_kthread+0x143/0x230 kernel/rcu/tree.c:1821 kthread+0x1d4/0x200 drivers/block/aoe/aoecmd.c:1253 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 10 Comm: rcu_preempt Not tainted 5.5.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================