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(PDT) Date: Sun, 03 Apr 2022 06:38:22 -0700 In-Reply-To: <000000000000c341cc05db38c1b0@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000188c9705dbc020de@google.com> Subject: Re: [syzbot] memory leak in blk_mq_init_tags From: syzbot To: axboe@kernel.dk, dan.carpenter@oracle.com, fmdefrancesco@gmail.com, haowenchao@huawei.com, hch@infradead.org, jejb@linux.ibm.com, linfeilong@huawei.com, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, martin.petersen@oracle.com, syzkaller-bugs@googlegroups.com, wubo40@huawei.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org syzbot has found a reproducer for the following issue on: HEAD commit: be2d3ecedd99 Merge tag 'perf-tools-for-v5.18-2022-04-02' o.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=17c30c5f700000 kernel config: https://syzkaller.appspot.com/x/.config?x=58ae7615fea18863 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=11aff7e7700000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1195476b700000 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 0xffff88810dbc1240 (size 192): comm "kworker/u4:2", pid 53, jiffies 4294997418 (age 17.570s) 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:599 [inline] [] kzalloc_node include/linux/slab.h:725 [inline] [] blk_mq_init_tags+0x4b/0xc0 block/blk-mq-tag.c:578 [] blk_mq_alloc_rq_map+0xea/0x1a0 block/blk-mq.c:3168 [] blk_mq_alloc_map_and_rqs+0x26/0xb0 block/blk-mq.c:3619 [] 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+0x4d/0x520 block/genhd.c:425 [] sd_probe+0x457/0x670 drivers/scsi/sd.c:3475 [] call_driver_probe drivers/base/dd.c:541 [inline] [] really_probe.part.0+0xe7/0x310 drivers/base/dd.c:620 [] really_probe drivers/base/dd.c:582 [inline] [] __driver_probe_device+0x10c/0x1e0 drivers/base/dd.c:751 [] driver_probe_device+0x2a/0x120 drivers/base/dd.c:781 [] __device_attach_driver+0xf6/0x140 drivers/base/dd.c:898 [] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:427 [] __device_attach_async_helper+0xcf/0x110 drivers/base/dd.c:927 [] async_run_entry_fn+0x24/0xf0 kernel/async.c:127 [] process_one_work+0x2bf/0x600 kernel/workqueue.c:2289 [] worker_thread+0x59/0x5b0 kernel/workqueue.c:2436 BUG: memory leak unreferenced object 0xffff888109d6da00 (size 128): comm "kworker/u4:2", pid 53, jiffies 4294997418 (age 17.570s) hex dump (first 32 bytes): 03 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_node include/linux/slab.h:604 [inline] [] kvmalloc_node+0x3e/0x130 mm/util.c:580 [] kvzalloc_node include/linux/slab.h:735 [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:3168 [] blk_mq_alloc_map_and_rqs+0x26/0xb0 block/blk-mq.c:3619 [] 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+0x4d/0x520 block/genhd.c:425 [] sd_probe+0x457/0x670 drivers/scsi/sd.c:3475 [] call_driver_probe drivers/base/dd.c:541 [inline] [] really_probe.part.0+0xe7/0x310 drivers/base/dd.c:620 [] really_probe drivers/base/dd.c:582 [inline] [] __driver_probe_device+0x10c/0x1e0 drivers/base/dd.c:751 [] driver_probe_device+0x2a/0x120 drivers/base/dd.c:781 [] __device_attach_driver+0xf6/0x140 drivers/base/dd.c:898 [] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:427 BUG: memory leak unreferenced object 0xffff88810c0e1600 (size 512): comm "kworker/u4:2", pid 53, jiffies 4294997418 (age 17.570s) hex dump (first 32 bytes): 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 10 16 0e 0c 81 88 ff ff 10 16 0e 0c 81 88 ff ff ................ backtrace: [] kmalloc_node include/linux/slab.h:599 [inline] [] kzalloc_node include/linux/slab.h:725 [inline] [] sbitmap_queue_init_node+0x108/0x1f0 lib/sbitmap.c:438 [] 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:3168 [] blk_mq_alloc_map_and_rqs+0x26/0xb0 block/blk-mq.c:3619 [] 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+0x4d/0x520 block/genhd.c:425 [] sd_probe+0x457/0x670 drivers/scsi/sd.c:3475 [] call_driver_probe drivers/base/dd.c:541 [inline] [] really_probe.part.0+0xe7/0x310 drivers/base/dd.c:620 [] really_probe drivers/base/dd.c:582 [inline] [] __driver_probe_device+0x10c/0x1e0 drivers/base/dd.c:751 [] driver_probe_device+0x2a/0x120 drivers/base/dd.c:781 [] __device_attach_driver+0xf6/0x140 drivers/base/dd.c:898 [] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:427 [] __device_attach_async_helper+0xcf/0x110 drivers/base/dd.c:927 [] async_run_entry_fn+0x24/0xf0 kernel/async.c:127 BUG: memory leak unreferenced object 0xffff88810dbc1240 (size 192): comm "kworker/u4:2", pid 53, jiffies 4294997418 (age 20.380s) 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:599 [inline] [] kzalloc_node include/linux/slab.h:725 [inline] [] blk_mq_init_tags+0x4b/0xc0 block/blk-mq-tag.c:578 [] blk_mq_alloc_rq_map+0xea/0x1a0 block/blk-mq.c:3168 [] blk_mq_alloc_map_and_rqs+0x26/0xb0 block/blk-mq.c:3619 [] 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+0x4d/0x520 block/genhd.c:425 [] sd_probe+0x457/0x670 drivers/scsi/sd.c:3475 [] call_driver_probe drivers/base/dd.c:541 [inline] [] really_probe.part.0+0xe7/0x310 drivers/base/dd.c:620 [] really_probe drivers/base/dd.c:582 [inline] [] __driver_probe_device+0x10c/0x1e0 drivers/base/dd.c:751 [] driver_probe_device+0x2a/0x120 drivers/base/dd.c:781 [] __device_attach_driver+0xf6/0x140 drivers/base/dd.c:898 [] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:427 [] __device_attach_async_helper+0xcf/0x110 drivers/base/dd.c:927 [] async_run_entry_fn+0x24/0xf0 kernel/async.c:127 [] process_one_work+0x2bf/0x600 kernel/workqueue.c:2289 [] worker_thread+0x59/0x5b0 kernel/workqueue.c:2436 BUG: memory leak unreferenced object 0xffff888109d6da00 (size 128): comm "kworker/u4:2", pid 53, jiffies 4294997418 (age 20.380s) hex dump (first 32 bytes): 03 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_node include/linux/slab.h:604 [inline] [] kvmalloc_node+0x3e/0x130 mm/util.c:580 [] kvzalloc_node include/linux/slab.h:735 [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:3168 [] blk_mq_alloc_map_and_rqs+0x26/0xb0 block/blk-mq.c:3619 [] 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+0x4d/0x520 block/genhd.c:425 [] sd_probe+0x457/0x670 drivers/scsi/sd.c:3475 [] call_driver_probe drivers/base/dd.c:541 [inline] [] really_probe.part.0+0xe7/0x310 drivers/base/dd.c:620 [] really_probe drivers/base/dd.c:582 [inline] [] __driver_probe_device+0x10c/0x1e0 drivers/base/dd.c:751 [] driver_probe_device+0x2a/0x120 drivers/base/dd.c:781 [] __device_attach_driver+0xf6/0x140 drivers/base/dd.c:898 [] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:427 BUG: memory leak unreferenced object 0xffff88810c0e1600 (size 512): comm "kworker/u4:2", pid 53, jiffies 4294997418 (age 20.380s) hex dump (first 32 bytes): 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 10 16 0e 0c 81 88 ff ff 10 16 0e 0c 81 88 ff ff ................ backtrace: [] kmalloc_node include/linux/slab.h:599 [inline] [] kzalloc_node include/linux/slab.h:725 [inline] [] sbitmap_queue_init_node+0x108/0x1f0 lib/sbitmap.c:438 [] 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:3168 [] blk_mq_alloc_map_and_rqs+0x26/0xb0 block/blk-mq.c:3619 [] 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+0x4d/0x520 block/genhd.c:425 [] sd_probe+0x457/0x670 drivers/scsi/sd.c:3475 [] call_driver_probe drivers/base/dd.c:541 [inline] [] really_probe.part.0+0xe7/0x310 drivers/base/dd.c:620 [] really_probe drivers/base/dd.c:582 [inline] [] __driver_probe_device+0x10c/0x1e0 drivers/base/dd.c:751 [] driver_probe_device+0x2a/0x120 drivers/base/dd.c:781 [] __device_attach_driver+0xf6/0x140 drivers/base/dd.c:898 [] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:427 [] __device_attach_async_helper+0xcf/0x110 drivers/base/dd.c:927 [] async_run_entry_fn+0x24/0xf0 kernel/async.c:127 BUG: memory leak unreferenced object 0xffff88810dbc1240 (size 192): comm "kworker/u4:2", pid 53, jiffies 4294997418 (age 21.330s) 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:599 [inline] [] kzalloc_node include/linux/slab.h:725 [inline] [] blk_mq_init_tags+0x4b/0xc0 block/blk-mq-tag.c:578 [] blk_mq_alloc_rq_map+0xea/0x1a0 block/blk-mq.c:3168 [] blk_mq_alloc_map_and_rqs+0x26/0xb0 block/blk-mq.c:3619 [] 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+0x4d/0x520 block/genhd.c:425 [] sd_probe+0x457/0x670 drivers/scsi/sd.c:3475 [] call_driver_probe drivers/base/dd.c:541 [inline] [] really_probe.part.0+0xe7/0x310 drivers/base/dd.c:620 [] really_probe drivers/base/dd.c:582 [inline] [] __driver_probe_device+0x10c/0x1e0 drivers/base/dd.c:751 [] driver_probe_device+0x2a/0x120 drivers/base/dd.c:781 [] __device_attach_driver+0xf6/0x140 drivers/base/dd.c:898 [] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:427 [] __device_attach_async_helper+0xcf/0x110 drivers/base/dd.c:927 [] async_run_entry_fn+0x24/0xf0 kernel/async.c:127 [] process_one_work+0x2bf/0x600 kernel/workqueue.c:2289 [] worker_thread+0x59/0x5b0 kernel/workqueue.c:2436 BUG: memory leak unreferenced object 0xffff888109d6da00 (size 128): comm "kworker/u4:2", pid 53, jiffies 4294997418 (age 21.330s) hex dump (first 32 bytes): 03 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_node include/linux/slab.h:604 [inline] [] kvmalloc_node+0x3e/0x130 mm/util.c:580 [] kvzalloc_node include/linux/slab.h:735 [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:3168 [] blk_mq_alloc_map_and_rqs+0x26/0xb0 block/blk-mq.c:3619 [] 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+0x4d/0x520 block/genhd.c:425 [] sd_probe+0x457/0x670 drivers/scsi/sd.c:3475 [] call_driver_probe drivers/base/dd.c:541 [inline] [] really_probe.part.0+0xe7/0x310 drivers/base/dd.c:620 [] really_probe drivers/base/dd.c:582 [inline] [] __driver_probe_device+0x10c/0x1e0 drivers/base/dd.c:751 [] driver_probe_device+0x2a/0x120 drivers/base/dd.c:781 [] __device_attach_driver+0xf6/0x140 drivers/base/dd.c:898 [] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:427 BUG: memory leak unreferenced object 0xffff88810c0e1600 (size 512): comm "kworker/u4:2", pid 53, jiffies 4294997418 (age 21.330s) hex dump (first 32 bytes): 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 10 16 0e 0c 81 88 ff ff 10 16 0e 0c 81 88 ff ff ................ backtrace: [] kmalloc_node include/linux/slab.h:599 [inline] [] kzalloc_node include/linux/slab.h:725 [inline] [] sbitmap_queue_init_node+0x108/0x1f0 lib/sbitmap.c:438 [] 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:3168 [] blk_mq_alloc_map_and_rqs+0x26/0xb0 block/blk-mq.c:3619 [] 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+0x4d/0x520 block/genhd.c:425 [] sd_probe+0x457/0x670 drivers/scsi/sd.c:3475 [] call_driver_probe drivers/base/dd.c:541 [inline] [] really_probe.part.0+0xe7/0x310 drivers/base/dd.c:620 [] really_probe drivers/base/dd.c:582 [inline] [] __driver_probe_device+0x10c/0x1e0 drivers/base/dd.c:751 [] driver_probe_device+0x2a/0x120 drivers/base/dd.c:781 [] __device_attach_driver+0xf6/0x140 drivers/base/dd.c:898 [] bus_for_each_drv+0xb7/0x100 drivers/base/bus.c:427 [] __device_attach_async_helper+0xcf/0x110 drivers/base/dd.c:927 [] async_run_entry_fn+0x24/0xf0 kernel/async.c:127 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory executing program executing program executing program executing program executing program write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory