Bluetooth: hci2 command 0x0406 tx timeout Bluetooth: hci3 command 0x0406 tx timeout Bluetooth: hci0 command 0x0406 tx timeout Bluetooth: hci5 command 0x0406 tx timeout Bluetooth: hci1 command 0x0406 tx timeout INFO: task syz-executor.2:11143 blocked for more than 140 seconds. Not tainted 4.14.272-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D28912 11143 7993 0x00000004 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3387 schedule+0x8d/0x1b0 kernel/sched/core.c:3431 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:588 [inline] rwsem_down_write_failed+0x343/0x6d0 kernel/locking/rwsem-xadd.c:617 call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:105 __down_write arch/x86/include/asm/rwsem.h:126 [inline] down_write+0x4f/0x90 kernel/locking/rwsem.c:56 inode_lock include/linux/fs.h:719 [inline] fuse_flush+0x1c7/0x520 fs/fuse/file.c:423 filp_close+0x9d/0x140 fs/open.c:1158 __close_fd+0x151/0x230 fs/file.c:639 SYSC_close fs/open.c:1177 [inline] SyS_close+0x42/0x90 fs/open.c:1175 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7fd989f99c8b RSP: 002b:00007fff1007f290 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fd989f99c8b RDX: 0000001b2ed20000 RSI: 0000001b2ed25e40 RDI: 0000000000000004 RBP: 00007fd98a0fb960 R08: 0000000000000000 R09: 0000000064a32d66 R10: 00050208af75b66f R11: 0000000000000293 R12: 0000000000028917 R13: 00007fff1007f390 R14: 00007fff1007f3b0 R15: 0000000000000032 INFO: task syz-executor.2:11146 blocked for more than 140 seconds. Not tainted 4.14.272-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D28504 11146 7993 0x00000004 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3387 schedule+0x8d/0x1b0 kernel/sched/core.c:3431 fuse_wait_on_page_writeback fs/fuse/file.c:385 [inline] fuse_wait_on_page_writeback.isra.0+0xdc/0x120 fs/fuse/file.c:381 fuse_launder_page fs/fuse/file.c:2041 [inline] fuse_launder_page+0xa2/0xd0 fs/fuse/file.c:2034 do_launder_page mm/truncate.c:609 [inline] invalidate_inode_pages2_range+0x547/0xc00 mm/truncate.c:685 fuse_finish_open+0x262/0x500 fs/fuse/file.c:181 fuse_open_common+0x234/0x290 fs/fuse/file.c:224 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:3569 do_filp_open+0x179/0x3c0 fs/namei.c:3603 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+0x46/0xbb RIP: 0033:0x7fd989fe7049 RSP: 002b:00007fd98895c168 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007fd98a0f9f60 RCX: 00007fd989fe7049 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200001c0 RBP: 00007fd98a04108d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff1007f22f R14: 00007fd98895c300 R15: 0000000000022000 INFO: task syz-executor.2:11173 blocked for more than 140 seconds. Not tainted 4.14.272-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D29696 11173 7993 0x00000004 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3387 schedule+0x8d/0x1b0 kernel/sched/core.c:3431 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:588 [inline] rwsem_down_write_failed+0x343/0x6d0 kernel/locking/rwsem-xadd.c:617 call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:105 __down_write arch/x86/include/asm/rwsem.h:126 [inline] down_write+0x4f/0x90 kernel/locking/rwsem.c:56 inode_lock include/linux/fs.h:719 [inline] fuse_flush+0x1c7/0x520 fs/fuse/file.c:423 filp_close+0x9d/0x140 fs/open.c:1158 do_dup2+0x1ec/0x3d0 fs/file.c:896 SYSC_dup3 fs/file.c:952 [inline] SyS_dup3+0x218/0x360 fs/file.c:927 SYSC_dup2 fs/file.c:973 [inline] SyS_dup2+0x25/0x300 fs/file.c:961 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7fd989fe7049 RSP: 002b:00007fd98893b168 EFLAGS: 00000246 ORIG_RAX: 0000000000000021 RAX: ffffffffffffffda RBX: 00007fd98a0fa030 RCX: 00007fd989fe7049 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000005 RBP: 00007fd98a04108d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff1007f22f R14: 00007fd98893b300 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 in:imklog/7697: #0: (&f->f_pos_lock){+.+.}, at: [] __fdget_pos+0x1fb/0x2b0 fs/file.c:819 1 lock held by syz-executor.2/11143: #0: (&sb->s_type->i_mutex_key#21){+.+.}, at: [] inode_lock include/linux/fs.h:719 [inline] #0: (&sb->s_type->i_mutex_key#21){+.+.}, at: [] fuse_flush+0x1c7/0x520 fs/fuse/file.c:423 2 locks held by syz-executor.2/11146: #0: (sb_writers#13){.+.+}, at: [] sb_start_write include/linux/fs.h:1551 [inline] #0: (sb_writers#13){.+.+}, at: [] mnt_want_write+0x3a/0xb0 fs/namespace.c:386 #1: (&sb->s_type->i_mutex_key#21){+.+.}, at: [] inode_lock include/linux/fs.h:719 [inline] #1: (&sb->s_type->i_mutex_key#21){+.+.}, at: [] fuse_open_common+0x1a4/0x290 fs/fuse/file.c:217 1 lock held by syz-executor.2/11173: #0: (&sb->s_type->i_mutex_key#21){+.+.}, at: [] inode_lock include/linux/fs.h:719 [inline] #0: (&sb->s_type->i_mutex_key#21){+.+.}, at: [] fuse_flush+0x1c7/0x520 fs/fuse/file.c:423 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1533 Comm: khungtaskd Not tainted 4.14.272-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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:404 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 4624 Comm: systemd-journal Not tainted 4.14.272-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8880a10e2140 task.stack: ffff8880a10e8000 RIP: 0010:iterate_chain_key kernel/locking/lockdep.c:325 [inline] RIP: 0010:__lock_acquire+0x7c4/0x3f20 kernel/locking/lockdep.c:3486 RSP: 0018:ffff8880a10ef788 EFLAGS: 00000046 RAX: 000000007d633d2b RBX: 0000000000000000 RCX: 9810de967d633d2b RDX: 00000000ffffbf7e RSI: 00000000425b018d RDI: ffffffff8b9ebb30 RBP: ffff8880a10e29ea R08: 0000000000000001 R09: 00000000000c0001 R10: ffff8880a10e29c8 R11: ffff8880a10e2140 R12: ffff8880a10e29e0 R13: 0000000000000001 R14: 00000000bfbe7f3a R15: ffffffff8becfd40 FS: 00007fa70038c8c0(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa6fd7a7020 CR3: 00000000a1b0c000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x8c/0xc0 kernel/locking/spinlock.c:160 __debug_object_init+0xa5/0x7a0 lib/debugobjects.c:345 debug_object_init lib/debugobjects.c:393 [inline] debug_object_activate+0x391/0x490 lib/debugobjects.c:474 debug_rcu_head_queue kernel/rcu/rcu.h:152 [inline] __call_rcu.constprop.0+0x31/0x7d0 kernel/rcu/tree.c:3050 file_free fs/file_table.c:56 [inline] put_filp+0x75/0x90 fs/file_table.c:313 path_openat+0x6ce/0x2970 fs/namei.c:3581 do_filp_open+0x179/0x3c0 fs/namei.c:3603 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+0x46/0xbb RIP: 0033:0x7fa6ff91b840 RSP: 002b:00007ffffa8a87f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007ffffa8a8b00 RCX: 00007fa6ff91b840 RDX: 00000000000001a0 RSI: 0000000000080042 RDI: 0000563b14f15580 RBP: 000000000000000d R08: 000000000000ffc0 R09: 00000000ffffffff R10: 0000000000000069 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000563b14f07040 R14: 00007ffffa8a8ac0 R15: 0000563b14f14ff0 Code: ce 44 89 f1 44 29 f0 41 01 d6 c1 c9 0d 31 c8 89 c1 29 c6 44 01 f0 c1 c1 04 31 f1 48 c1 e1 20 48 09 c1 48 83 bc 24 b8 01 00 00 00 <49> 89 ce 74 2c 48 8b bc 24 b8 01 00 00 be ff ff ff ff 4c 89 5c ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 44 89 f1 mov %r14d,%ecx 3: 44 29 f0 sub %r14d,%eax 6: 41 01 d6 add %edx,%r14d 9: c1 c9 0d ror $0xd,%ecx c: 31 c8 xor %ecx,%eax e: 89 c1 mov %eax,%ecx 10: 29 c6 sub %eax,%esi 12: 44 01 f0 add %r14d,%eax 15: c1 c1 04 rol $0x4,%ecx 18: 31 f1 xor %esi,%ecx 1a: 48 c1 e1 20 shl $0x20,%rcx 1e: 48 09 c1 or %rax,%rcx 21: 48 83 bc 24 b8 01 00 cmpq $0x0,0x1b8(%rsp) 28: 00 00 * 2a: 49 89 ce mov %rcx,%r14 <-- trapping instruction 2d: 74 2c je 0x5b 2f: 48 8b bc 24 b8 01 00 mov 0x1b8(%rsp),%rdi 36: 00 37: be ff ff ff ff mov $0xffffffff,%esi 3c: 4c rex.WR 3d: 89 .byte 0x89 3e: 5c pop %rsp