Bluetooth: hci7: command 0x041b tx timeout Bluetooth: hci7: command 0x040f tx timeout Bluetooth: hci7: command 0x0419 tx timeout ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy1 wpan1: encryption failed: -22 INFO: task syz-executor.5:21897 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D25728 21897 8262 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 io_schedule+0xb5/0x120 kernel/sched/core.c:5181 bit_wait_io+0x12/0x90 kernel/sched/wait_bit.c:207 __wait_on_bit_lock+0xb5/0x170 kernel/sched/wait_bit.c:89 out_of_line_wait_on_bit_lock+0xd2/0x100 kernel/sched/wait_bit.c:116 wait_on_bit_lock_io include/linux/wait_bit.h:208 [inline] __lock_buffer+0x52/0x60 fs/buffer.c:65 lock_buffer include/linux/buffer_head.h:374 [inline] __sync_dirty_buffer+0x2a6/0x320 fs/buffer.c:3178 __ext4_handle_dirty_metadata+0x234/0x590 fs/ext4/ext4_jbd2.c:300 ext4_finish_convert_inline_dir fs/ext4/inline.c:1173 [inline] ext4_convert_inline_data_nolock+0x967/0xd10 fs/ext4/inline.c:1249 ext4_try_add_inline_entry+0x338/0x570 fs/ext4/inline.c:1322 ext4_add_entry+0x33c/0xbb0 fs/ext4/namei.c:2117 ext4_add_nondir fs/ext4/namei.c:2483 [inline] ext4_create+0x338/0x5f0 fs/ext4/namei.c:2525 lookup_open+0x893/0x1a20 fs/namei.c:3235 do_last fs/namei.c:3327 [inline] path_openat+0x1094/0x2df0 fs/namei.c:3537 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 do_sys_open+0x3b3/0x520 fs/open.c:1085 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f877ba580c9 Code: Bad RIP value. RSP: 002b:00007f8779fca168 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007f877bb77f80 RCX: 00007f877ba580c9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000180 RBP: 00007f877bab3ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe45446f0f R14: 00007f8779fca300 R15: 0000000000022000 INFO: task syz-executor.5:21935 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D29168 21935 8262 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 __rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:292 [inline] rwsem_down_read_failed+0x20a/0x390 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:83 [inline] down_read+0x44/0x80 kernel/locking/rwsem.c:26 inode_lock_shared include/linux/fs.h:758 [inline] lookup_slow fs/namei.c:1688 [inline] walk_component+0x798/0xda0 fs/namei.c:1811 link_path_walk.part.0+0x901/0x1230 fs/namei.c:2142 link_path_walk fs/namei.c:2073 [inline] path_openat+0x1db/0x2df0 fs/namei.c:3536 do_filp_open+0x18c/0x3f0 fs/namei.c:3567 do_sys_open+0x3b3/0x520 fs/open.c:1085 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f877ba580c9 Code: Bad RIP value. RSP: 002b:00007f8771ca9168 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007f877bb78050 RCX: 00007f877ba580c9 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 00000000200002c0 RBP: 00007f877bab3ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe45446f0f R14: 00007f8771ca9300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/1569: #0: 00000000f6229144 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 3 locks held by kworker/u4:4/2887: #0: 0000000066e321f1 (&rq->lock){-.-.}, at: idle_balance kernel/sched/fair.c:9702 [inline] #0: 0000000066e321f1 (&rq->lock){-.-.}, at: pick_next_task_fair+0x556/0x1570 kernel/sched/fair.c:6841 #1: 00000000f6229144 (rcu_read_lock){....}, at: cpu_of kernel/sched/sched.h:923 [inline] #1: 00000000f6229144 (rcu_read_lock){....}, at: __update_idle_core+0x39/0x3e0 kernel/sched/fair.c:6057 #2: 000000000db5fe95 (&base->lock){-.-.}, at: lock_timer_base+0x55/0x1b0 kernel/time/timer.c:950 1 lock held by in:imklog/7797: 1 lock held by agetty/8021: #0: 0000000023a4446a (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272 3 locks held by kworker/u4:6/9501: #0: 00000000495700b8 ((wq_completion)"writeback"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 000000004d2910e8 ((work_completion)(&(&wb->dwork)->work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 00000000bc6ca3f4 (&type->s_umount_key#45){.+.+}, at: trylock_super+0x1d/0x100 fs/super.c:412 3 locks held by syz-executor.5/21897: #0: 000000001d43320c (sb_writers#3){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] #0: 000000001d43320c (sb_writers#3){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360 #1: 000000006e92a6ff (&type->i_mutex_dir_key#3){++++}, at: inode_lock include/linux/fs.h:748 [inline] #1: 000000006e92a6ff (&type->i_mutex_dir_key#3){++++}, at: do_last fs/namei.c:3324 [inline] #1: 000000006e92a6ff (&type->i_mutex_dir_key#3){++++}, at: path_openat+0x1071/0x2df0 fs/namei.c:3537 #2: 00000000ce59267f (&ei->xattr_sem){++++}, at: ext4_write_lock_xattr fs/ext4/xattr.h:141 [inline] #2: 00000000ce59267f (&ei->xattr_sem){++++}, at: ext4_try_add_inline_entry+0xfc/0x570 fs/ext4/inline.c:1280 1 lock held by syz-executor.5/21935: #0: 000000006e92a6ff (&type->i_mutex_dir_key#3){++++}, at: inode_lock_shared include/linux/fs.h:758 [inline] #0: 000000006e92a6ff (&type->i_mutex_dir_key#3){++++}, at: lookup_slow fs/namei.c:1688 [inline] #0: 000000006e92a6ff (&type->i_mutex_dir_key#3){++++}, at: walk_component+0x798/0xda0 fs/namei.c:1811 3 locks held by syz-executor.0/22103: #0: 00000000302c5358 (sb_writers#3){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] #0: 00000000302c5358 (sb_writers#3){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360 #1: 000000006d7d0ad8 (&type->i_mutex_dir_key#3){++++}, at: inode_lock include/linux/fs.h:748 [inline] #1: 000000006d7d0ad8 (&type->i_mutex_dir_key#3){++++}, at: do_last fs/namei.c:3324 [inline] #1: 000000006d7d0ad8 (&type->i_mutex_dir_key#3){++++}, at: path_openat+0x1071/0x2df0 fs/namei.c:3537 #2: 00000000687e91e1 (&ei->xattr_sem){++++}, at: ext4_write_lock_xattr fs/ext4/xattr.h:141 [inline] #2: 00000000687e91e1 (&ei->xattr_sem){++++}, at: ext4_try_add_inline_entry+0xfc/0x570 fs/ext4/inline.c:1280 1 lock held by syz-executor.0/22135: #0: 000000006d7d0ad8 (&type->i_mutex_dir_key#3){++++}, at: inode_lock_shared include/linux/fs.h:758 [inline] #0: 000000006d7d0ad8 (&type->i_mutex_dir_key#3){++++}, at: lookup_slow fs/namei.c:1688 [inline] #0: 000000006d7d0ad8 (&type->i_mutex_dir_key#3){++++}, at: walk_component+0x798/0xda0 fs/namei.c:1811 1 lock held by syz-executor.2/22537: #0: 0000000075ee0c8d (&bdev->bd_mutex){+.+.}, at: iterate_bdevs+0xc4/0x290 fs/block_dev.c:2200 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1569 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0x991/0xe60 kernel/hung_task.c:287 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60