================================================================== BUG: KCSAN: data-race in sbitmap_queue_clear / sbitmap_queue_clear write to 0xffffe8ffffd2b7e8 of 4 bytes by interrupt on cpu 1: sbitmap_queue_clear+0xf3/0x110 lib/sbitmap.c:602 blk_mq_put_tag+0x80/0xc0 block/blk-mq-tag.c:201 __blk_mq_free_request+0x114/0x1e0 block/blk-mq.c:502 blk_mq_free_request+0x2c8/0x320 block/blk-mq.c:536 __blk_mq_end_request block/blk-mq.c:561 [inline] blk_mq_end_request+0x28f/0x2b0 block/blk-mq.c:570 end_cmd drivers/block/null_blk_main.c:622 [inline] end_cmd+0xa9/0x1a0 drivers/block/null_blk_main.c:616 null_complete_rq+0x22/0x30 drivers/block/null_blk_main.c:649 blk_done_softirq+0x1eb/0x250 block/blk-softirq.c:37 __do_softirq+0x115/0x33f kernel/softirq.c:292 run_ksoftirqd+0x46/0x60 kernel/softirq.c:603 smpboot_thread_fn+0x37d/0x4a0 kernel/smpboot.c:165 kthread+0x1d4/0x200 drivers/block/aoe/aoecmd.c:1253 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:352 write to 0xffffe8ffffd2b7e8 of 4 bytes by interrupt on cpu 0: sbitmap_queue_clear+0xf3/0x110 lib/sbitmap.c:602 blk_mq_put_tag+0x80/0xc0 block/blk-mq-tag.c:201 __blk_mq_free_request+0x114/0x1e0 block/blk-mq.c:502 blk_mq_free_request+0x2c8/0x320 block/blk-mq.c:536 __blk_mq_end_request block/blk-mq.c:561 [inline] blk_mq_end_request+0x28f/0x2b0 block/blk-mq.c:570 end_cmd drivers/block/null_blk_main.c:622 [inline] end_cmd+0xa9/0x1a0 drivers/block/null_blk_main.c:616 null_complete_rq+0x22/0x30 drivers/block/null_blk_main.c:649 blk_done_softirq+0x1eb/0x250 block/blk-softirq.c:37 __do_softirq+0x115/0x33f kernel/softirq.c:292 run_ksoftirqd+0x46/0x60 kernel/softirq.c:603 smpboot_thread_fn+0x37d/0x4a0 kernel/smpboot.c:165 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: 9 Comm: ksoftirqd/0 Not tainted 5.4.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================