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Date: Sun, 27 Mar 2022 13:08:18 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000c341cc05db38c1b0@google.com> Subject: [syzbot] memory leak in blk_mq_init_tags From: syzbot To: axboe@kernel.dk, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 6b1f86f8e9c7 Merge tag 'folio-5.18b' of git://git.infradea.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=13b41dcb700000 kernel config: https://syzkaller.appspot.com/x/.config?x=c6e80763d853259b dashboard link: https://syzkaller.appspot.com/bug?extid=f08c77040fa163a75a46 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1564ecb3700000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+f08c77040fa163a75a46@syzkaller.appspotmail.com BUG: memory leak unreferenced object 0xffff888118503c00 (size 192): comm "kworker/u4:2", pid 52, jiffies 4294961137 (age 11.420s) hex dump (first 32 bytes): 02 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 02 00 00 00 06 00 00 00 01 00 00 00 00 00 00 00 ................ backtrace: [] kmalloc_node include/linux/slab.h:602 [inline] [] kzalloc_node include/linux/slab.h:728 [inline] [] blk_mq_init_tags+0x4b/0xc0 block/blk-mq-tag.c:578 [] blk_mq_alloc_rq_map+0xea/0x1a0 block/blk-mq.c:3169 [] blk_mq_alloc_map_and_rqs+0x26/0xb0 block/blk-mq.c:3620 [] blk_mq_sched_alloc_map_and_rqs block/blk-mq-sched.c:507 [inline] [] blk_mq_init_sched+0x127/0x2e0 block/blk-mq-sched.c:587 [] elevator_init_mq+0x1f9/0x240 block/elevator.c:709 [] device_add_disk+0x25/0x510 block/genhd.c:421 [] sd_probe+0x457/0x670 drivers/scsi/sd.c:3551 [] call_driver_probe drivers/base/dd.c:517 [inline] [] really_probe.part.0+0xe7/0x380 drivers/base/dd.c:596 [] really_probe drivers/base/dd.c:558 [inline] [] __driver_probe_device+0x10c/0x1e0 drivers/base/dd.c:755 [] driver_probe_device+0x2a/0x120 drivers/base/dd.c:785 [] __device_attach_driver+0xf6/0x140 drivers/base/dd.c:902 [] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:427 [] __device_attach_async_helper+0xcf/0x110 drivers/base/dd.c:931 [] async_run_entry_fn+0x24/0xf0 kernel/async.c:127 [] process_one_work+0x2bf/0x600 kernel/workqueue.c:2307 [] worker_thread+0x59/0x5b0 kernel/workqueue.c:2454 BUG: memory leak unreferenced object 0xffff888117fee680 (size 128): comm "kworker/u4:2", pid 52, jiffies 4294961137 (age 11.420s) hex dump (first 32 bytes): 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [] kmalloc_array_node include/linux/slab.h:679 [inline] [] kcalloc_node include/linux/slab.h:684 [inline] [] sbitmap_init_node+0xde/0x2d0 lib/sbitmap.c:113 [] sbitmap_queue_init_node+0x3c/0x1f0 lib/sbitmap.c:428 [] bt_alloc block/blk-mq-tag.c:543 [inline] [] blk_mq_init_bitmaps+0x57/0xf0 block/blk-mq-tag.c:555 [] blk_mq_init_tags+0x88/0xc0 block/blk-mq-tag.c:586 [] blk_mq_alloc_rq_map+0xea/0x1a0 block/blk-mq.c:3169 [] blk_mq_alloc_map_and_rqs+0x26/0xb0 block/blk-mq.c:3620 [] blk_mq_sched_alloc_map_and_rqs block/blk-mq-sched.c:507 [inline] [] blk_mq_init_sched+0x127/0x2e0 block/blk-mq-sched.c:587 [] elevator_init_mq+0x1f9/0x240 block/elevator.c:709 [] device_add_disk+0x25/0x510 block/genhd.c:421 [] sd_probe+0x457/0x670 drivers/scsi/sd.c:3551 [] call_driver_probe drivers/base/dd.c:517 [inline] [] really_probe.part.0+0xe7/0x380 drivers/base/dd.c:596 [] really_probe drivers/base/dd.c:558 [inline] [] __driver_probe_device+0x10c/0x1e0 drivers/base/dd.c:755 [] driver_probe_device+0x2a/0x120 drivers/base/dd.c:785 [] __device_attach_driver+0xf6/0x140 drivers/base/dd.c:902 [] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:427 [] __device_attach_async_helper+0xcf/0x110 drivers/base/dd.c:931 BUG: memory leak unreferenced object 0xffff888116df4c00 (size 512): comm "kworker/u4:2", pid 52, jiffies 4294961137 (age 11.420s) hex dump (first 32 bytes): 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 10 4c df 16 81 88 ff ff 10 4c df 16 81 88 ff ff .L.......L...... backtrace: [] kmalloc_node include/linux/slab.h:602 [inline] [] kzalloc_node include/linux/slab.h:728 [inline] [] sbitmap_queue_init_node+0x108/0x1f0 lib/sbitmap.c:438 [] bt_alloc block/blk-mq-tag.c:543 [inline] [] blk_mq_init_bitmaps+0x87/0xf0 block/blk-mq-tag.c:557 [] blk_mq_init_tags+0x88/0xc0 block/blk-mq-tag.c:586 [] blk_mq_alloc_rq_map+0xea/0x1a0 block/blk-mq.c:3169 [] blk_mq_alloc_map_and_rqs+0x26/0xb0 block/blk-mq.c:3620 [] blk_mq_sched_alloc_map_and_rqs block/blk-mq-sched.c:507 [inline] [] blk_mq_init_sched+0x127/0x2e0 block/blk-mq-sched.c:587 [] elevator_init_mq+0x1f9/0x240 block/elevator.c:709 [] device_add_disk+0x25/0x510 block/genhd.c:421 [] sd_probe+0x457/0x670 drivers/scsi/sd.c:3551 [] call_driver_probe drivers/base/dd.c:517 [inline] [] really_probe.part.0+0xe7/0x380 drivers/base/dd.c:596 [] really_probe drivers/base/dd.c:558 [inline] [] __driver_probe_device+0x10c/0x1e0 drivers/base/dd.c:755 [] driver_probe_device+0x2a/0x120 drivers/base/dd.c:785 [] __device_attach_driver+0xf6/0x140 drivers/base/dd.c:902 [] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:427 [] __device_attach_async_helper+0xcf/0x110 drivers/base/dd.c:931 [] async_run_entry_fn+0x24/0xf0 kernel/async.c:127 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches