Bluetooth: hci6 command 0x0406 tx timeout Bluetooth: hci7 command 0x0406 tx timeout INFO: task systemd-udevd:10014 blocked for more than 140 seconds. Not tainted 4.14.305-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. systemd-udevd D28712 10014 4627 0x00000304 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3386 schedule+0x8d/0x1b0 kernel/sched/core.c:3430 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3488 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893 __blkdev_get+0x191/0x1090 fs/block_dev.c:1455 blkdev_get+0x88/0x890 fs/block_dev.c:1611 blkdev_open+0x1cc/0x250 fs/block_dev.c:1772 do_dentry_open+0x44b/0xec0 fs/open.c:777 vfs_open+0x105/0x220 fs/open.c:888 do_last fs/namei.c:3428 [inline] path_openat+0x628/0x2970 fs/namei.c:3571 do_filp_open+0x179/0x3c0 fs/namei.c:3605 do_sys_open+0x296/0x410 fs/open.c:1081 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7f8d1a1ab840 RSP: 002b:00007ffde6cbd108 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 000055e5a59cc970 RCX: 00007f8d1a1ab840 RDX: 000055e5a3b73fe3 RSI: 00000000000a0800 RDI: 000055e5a59bee50 RBP: 00007ffde6cbd280 R08: 000055e5a3b73670 R09: 0000000000000010 R10: 000055e5a3b73d0c R11: 0000000000000246 R12: 00007ffde6cbd1d0 R13: 000055e5a59d0880 R14: 0000000000000003 R15: 000000000000000e INFO: task syz-executor.1:10021 blocked for more than 140 seconds. Not tainted 4.14.305-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D28584 10021 8004 0x00000004 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3386 schedule+0x8d/0x1b0 kernel/sched/core.c:3430 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:292 [inline] rwsem_down_read_failed+0x1e6/0x350 kernel/locking/rwsem-xadd.c:309 call_rwsem_down_read_failed+0x14/0x30 arch/x86/lib/rwsem.S:94 __down_read arch/x86/include/asm/rwsem.h:66 [inline] down_read+0x44/0x80 kernel/locking/rwsem.c:26 __get_super.part.0+0x271/0x390 fs/super.c:678 __get_super include/linux/spinlock.h:317 [inline] get_super+0x2b/0x50 fs/super.c:707 fsync_bdev+0x14/0xc0 fs/block_dev.c:495 invalidate_partition+0x74/0xb0 block/genhd.c:1509 drop_partitions.isra.0+0x83/0x150 block/partition-generic.c:448 rescan_partitions+0xa9/0x800 block/partition-generic.c:521 __blkdev_reread_part+0x140/0x1d0 block/ioctl.c:173 blkdev_reread_part+0x23/0x40 block/ioctl.c:193 loop_reread_partitions drivers/block/loop.c:624 [inline] loop_set_status+0xeeb/0x12b0 drivers/block/loop.c:1193 loop_set_status_old+0x18a/0x200 drivers/block/loop.c:1306 lo_ioctl+0x5ae/0x1cd0 drivers/block/loop.c:1436 __blkdev_driver_ioctl block/ioctl.c:297 [inline] blkdev_ioctl+0x540/0x1830 block/ioctl.c:594 block_ioctl+0xd9/0x120 fs/block_dev.c:1893 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7fe3acd020f9 RSP: 002b:00007fe3ab274168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fe3ace21f80 RCX: 00007fe3acd020f9 RDX: 0000000020000940 RSI: 0000000000004c02 RDI: 0000000000000003 RBP: 00007fe3acd5dae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffcf60d5cff R14: 00007fe3ab274300 R15: 0000000000022000 INFO: task syz-executor.0:10024 blocked for more than 140 seconds. Not tainted 4.14.305-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D28936 10024 8001 0x80000004 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3386 schedule+0x8d/0x1b0 kernel/sched/core.c:3430 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3488 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893 lo_ioctl+0x87/0x1cd0 drivers/block/loop.c:1419 __blkdev_driver_ioctl block/ioctl.c:297 [inline] blkdev_ioctl+0x540/0x1830 block/ioctl.c:594 ioctl_by_bdev+0xa0/0x110 fs/block_dev.c:2092 hfs_get_last_session fs/hfs/mdb.c:55 [inline] hfs_mdb_get+0x192/0x1b40 fs/hfs/mdb.c:83 hfs_fill_super+0xcdb/0x1250 fs/hfs/super.c:413 mount_bdev+0x2b3/0x360 fs/super.c:1134 mount_fs+0x92/0x2a0 fs/super.c:1237 vfs_kern_mount.part.0+0x5b/0x470 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2572 [inline] do_mount+0xe65/0x2a30 fs/namespace.c:2905 SYSC_mount fs/namespace.c:3121 [inline] SyS_mount+0xa8/0x120 fs/namespace.c:3098 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7fa857e2162a RSP: 002b:00007fa856391f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000275 RCX: 00007fa857e2162a RDX: 0000000020000040 RSI: 0000000020000080 RDI: 00007fa856391fe0 RBP: 00007fa856392020 R08: 00007fa856392020 R09: 0000000002004800 R10: 0000000002004800 R11: 0000000000000202 R12: 0000000020000040 R13: 0000000020000080 R14: 00007fa856391fe0 R15: 0000000020000300 INFO: task syz-executor.0:10176 blocked for more than 140 seconds. Not tainted 4.14.305-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D25632 10176 1 0x00000004 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3386 schedule+0x8d/0x1b0 kernel/sched/core.c:3430 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3488 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893 __blkdev_get+0x191/0x1090 fs/block_dev.c:1455 blkdev_get+0x88/0x890 fs/block_dev.c:1611 blkdev_open+0x1cc/0x250 fs/block_dev.c:1772 do_dentry_open+0x44b/0xec0 fs/open.c:777 vfs_open+0x105/0x220 fs/open.c:888 do_last fs/namei.c:3428 [inline] path_openat+0x628/0x2970 fs/namei.c:3571 do_filp_open+0x179/0x3c0 fs/namei.c:3605 do_sys_open+0x296/0x410 fs/open.c:1081 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7f08bb75a284 RSP: 002b:00007ffcba396e10 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007ffcba396f10 RCX: 00007f08bb75a284 RDX: 0000000000000002 RSI: 00007ffcba396f50 RDI: 00000000ffffff9c RBP: 00007ffcba396f50 R08: 0000000000000000 R09: 00007ffcba396d20 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002 R13: 00007f08bb89e140 R14: 00007f08bb89ee48 R15: 00007ffcba396f50 INFO: task syz-executor.1:10611 blocked for more than 140 seconds. Not tainted 4.14.305-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D28568 10611 10146 0x00000004 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3386 schedule+0x8d/0x1b0 kernel/sched/core.c:3430 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3488 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893 __blkdev_get+0x191/0x1090 fs/block_dev.c:1455 blkdev_get+0x88/0x890 fs/block_dev.c:1611 blkdev_open+0x1cc/0x250 fs/block_dev.c:1772 do_dentry_open+0x44b/0xec0 fs/open.c:777 vfs_open+0x105/0x220 fs/open.c:888 do_last fs/namei.c:3428 [inline] path_openat+0x628/0x2970 fs/namei.c:3571 do_filp_open+0x179/0x3c0 fs/namei.c:3605 do_sys_open+0x296/0x410 fs/open.c:1081 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7f3b8f542284 RSP: 002b:00007f3b8db01ca0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 6666666666666667 RCX: 00007f3b8f542284 RDX: 0000000000000000 RSI: 00007f3b8db01d40 RDI: 00000000ffffff9c RBP: 00007f3b8db01d40 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 00007fff0b0f124f R14: 00007f3b8db02300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/1533: #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4548 1 lock held by systemd-udevd/10014: #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x191/0x1090 fs/block_dev.c:1455 3 locks held by syz-executor.1/10021: #0: (&lo->lo_ctl_mutex/1){+.+.}, at: [] lo_ioctl+0x87/0x1cd0 drivers/block/loop.c:1419 #1: (&bdev->bd_mutex){+.+.}, at: [] blkdev_reread_part+0x1b/0x40 block/ioctl.c:192 #2: (&type->s_umount_key#70){.+.+}, at: [] __get_super.part.0+0x271/0x390 fs/super.c:678 2 locks held by syz-executor.0/10024: #0: (&type->s_umount_key#69/1){+.+.}, at: [] alloc_super fs/super.c:251 [inline] #0: (&type->s_umount_key#69/1){+.+.}, at: [] sget_userns+0x556/0xc10 fs/super.c:516 #1: (&lo->lo_ctl_mutex/1){+.+.}, at: [] lo_ioctl+0x87/0x1cd0 drivers/block/loop.c:1419 1 lock held by syz-executor.0/10176: #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x191/0x1090 fs/block_dev.c:1455 1 lock held by syz-executor.1/10611: #0: (&bdev->bd_mutex){+.+.}, at: [] __blkdev_get+0x191/0x1090 fs/block_dev.c:1455 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1533 Comm: khungtaskd Not tainted 4.14.305-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x13a/0x180 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:140 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:195 [inline] watchdog+0x5b9/0xb40 kernel/hung_task.c:274 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:406 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 34 Comm: kworker/u4:2 Not tainted 4.14.305-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 Workqueue: bat_events batadv_nc_worker task: ffff8880b56a61c0 task.stack: ffff8880b56a8000 RIP: 0010:__raw_callee_save___pv_queued_spin_unlock+0xc/0x12 RSP: 0018:ffff8880b56afc28 EFLAGS: 00000246 RAX: 0000000000000001 RBX: ffff8880a03026e8 RCX: 1ffff11016ad4d53 RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff888095ad2b98 RBP: ffff888095ad2b98 R08: ffffffff8b9a5f70 R09: 0000000000000002 R10: 0000000000000000 R11: ffff8880b56a61c0 R12: ffff888095ad2ba0 R13: ffff888095ad2ba8 R14: ffff888095ad2b98 R15: ffff88809fc82400 FS: 0000000000000000(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c006800000 CR3: 0000000095a84000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: pv_queued_spin_unlock arch/x86/include/asm/paravirt.h:674 [inline] queued_spin_unlock arch/x86/include/asm/qspinlock.h:57 [inline] do_raw_spin_unlock+0x164/0x220 kernel/locking/spinlock_debug.c:135 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:175 [inline] _raw_spin_unlock_bh+0x1f/0x30 kernel/locking/spinlock.c:208 spin_unlock_bh include/linux/spinlock.h:362 [inline] batadv_nc_purge_paths+0x20c/0x300 net/batman-adv/network-coding.c:481 batadv_nc_worker+0x660/0xc50 net/batman-adv/network-coding.c:731 process_one_work+0x793/0x14a0 kernel/workqueue.c:2117 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2251 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:406 Code: 52 56 57 41 50 41 51 41 52 41 53 e8 ef 10 00 00 41 5b 41 5a 41 59 41 58 5f 5e 5a 59 c3 66 90 52 b8 01 00 00 00 31 d2 f0 0f b0 17 <3c> 01 75 02 5a c3 56 0f b6 f0 e8 c5 ff ff ff 5e 5a c3 66 90 41