Bluetooth: hci3: command 0x0406 tx timeout Bluetooth: hci4: command 0x0406 tx timeout Bluetooth: hci5: command 0x0406 tx timeout ieee802154 phy0 wpan0: encryption failed: -22 ieee802154 phy1 wpan1: encryption failed: -22 INFO: task syz-executor.2:9947 blocked for more than 140 seconds. Not tainted 4.19.210-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D27576 9947 8151 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_write_failed_common kernel/locking/rwsem-xadd.c:589 [inline] rwsem_down_write_failed+0x3aa/0x760 kernel/locking/rwsem-xadd.c:618 call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x4f/0x90 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:748 [inline] lock_mount+0xcc/0x4a0 fs/namespace.c:2075 do_add_mount+0x73/0x560 fs/namespace.c:2439 do_new_mount fs/namespace.c:2506 [inline] do_mount+0x1976/0x2f50 fs/namespace.c:2822 ksys_mount+0xcf/0x130 fs/namespace.c:3038 __do_sys_mount fs/namespace.c:3052 [inline] __se_sys_mount fs/namespace.c:3049 [inline] __x64_sys_mount+0xba/0x150 fs/namespace.c:3049 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f5ee29be8d9 Code: Bad RIP value. RSP: 002b:00007f5edff14188 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f5ee2ac3020 RCX: 00007f5ee29be8d9 RDX: 0000000020000040 RSI: 0000000020000000 RDI: 0000000000000000 RBP: 00007f5ee2a18cb4 R08: 0000000020000500 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe27b6401f R14: 00007f5edff14300 R15: 0000000000022000 INFO: task syz-executor.2:9948 blocked for more than 140 seconds. Not tainted 4.19.210-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D29952 9948 8151 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_write_failed_common kernel/locking/rwsem-xadd.c:589 [inline] rwsem_down_write_failed+0x3aa/0x760 kernel/locking/rwsem-xadd.c:618 call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:117 __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x4f/0x90 kernel/locking/rwsem.c:72 inode_lock include/linux/fs.h:748 [inline] chown_common+0x2d0/0x550 fs/open.c:648 do_fchownat+0x126/0x1e0 fs/open.c:681 __do_sys_lchown fs/open.c:706 [inline] __se_sys_lchown fs/open.c:704 [inline] __x64_sys_lchown+0x7a/0xc0 fs/open.c:704 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f5ee29be8d9 Code: Bad RIP value. RSP: 002b:00007f5edfef3188 EFLAGS: 00000246 ORIG_RAX: 000000000000005e RAX: ffffffffffffffda RBX: 00007f5ee2ac30e0 RCX: 00007f5ee29be8d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200002c0 RBP: 00007f5ee2a18cb4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe27b6401f R14: 00007f5edfef3300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/1570: #0: 000000009aee2665 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 1 lock held by in:imklog/7825: #0: 00000000c9e17b90 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 2 locks held by agetty/7823: #0: 0000000021137b25 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272 #1: 00000000931d2a3b (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1950 drivers/tty/n_tty.c:2154 2 locks held by syz-executor.2/9925: #0: 00000000e99efefc (sb_writers#15){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] #0: 00000000e99efefc (sb_writers#15){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360 #1: 00000000a7c80be4 (&sb->s_type->i_mutex_key#21){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #1: 00000000a7c80be4 (&sb->s_type->i_mutex_key#21){+.+.}, at: chown_common+0x2d0/0x550 fs/open.c:648 1 lock held by syz-executor.2/9947: #0: 00000000a7c80be4 (&sb->s_type->i_mutex_key#21){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #0: 00000000a7c80be4 (&sb->s_type->i_mutex_key#21){+.+.}, at: lock_mount+0xcc/0x4a0 fs/namespace.c:2075 2 locks held by syz-executor.2/9948: #0: 00000000e99efefc (sb_writers#15){.+.+}, at: sb_start_write include/linux/fs.h:1579 [inline] #0: 00000000e99efefc (sb_writers#15){.+.+}, at: mnt_want_write+0x3a/0xb0 fs/namespace.c:360 #1: 00000000a7c80be4 (&sb->s_type->i_mutex_key#21){+.+.}, at: inode_lock include/linux/fs.h:748 [inline] #1: 00000000a7c80be4 (&sb->s_type->i_mutex_key#21){+.+.}, at: chown_common+0x2d0/0x550 fs/open.c:648 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1570 Comm: khungtaskd Not tainted 4.19.210-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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 CPU: 0 PID: 161 Comm: kworker/u4:2 Not tainted 4.19.210-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_purge_orig RIP: 0010:hlock_class kernel/locking/lockdep.c:145 [inline] RIP: 0010:mark_lock+0x13/0x1160 kernel/locking/lockdep.c:3106 Code: c7 68 83 f1 89 e8 dd 7c 4d 00 eb 87 4c 89 ff e8 43 7c 4d 00 eb c7 90 48 b8 00 00 00 00 00 fc ff df 41 57 89 d1 41 89 d7 41 56 <4c> 8d 76 20 4c 89 f2 41 55 49 89 fd 41 54 48 c1 ea 03 41 bc 01 00 RSP: 0018:ffff8880b4d8fb98 EFLAGS: 00000002 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000006 RDX: 0000000000000006 RSI: ffff8880b4d76888 RDI: ffff8880b4d76000 RBP: 0000000000000007 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000006 R13: ffff8880b4d76000 R14: dffffc0000000000 R15: 0000000000000006 FS: 0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1329ff0000 CR3: 00000000ab6d0000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: mark_held_locks+0xa6/0xf0 kernel/locking/lockdep.c:2810 __trace_hardirqs_on_caller kernel/locking/lockdep.c:2839 [inline] lockdep_hardirqs_on+0x3a8/0x5c0 kernel/locking/lockdep.c:2884 __local_bh_enable_ip+0x159/0x270 kernel/softirq.c:194 spin_unlock_bh include/linux/spinlock.h:374 [inline] batadv_purge_orig_ref+0xa2c/0x1110 net/batman-adv/originator.c:1379 batadv_purge_orig+0x17/0x60 net/batman-adv/originator.c:1392 process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 68 83 f1 89 e8 pushq $0xffffffffe889f183 5: dd 7c 4d 00 fnstsw 0x0(%rbp,%rcx,2) 9: eb 87 jmp 0xffffff92 b: 4c 89 ff mov %r15,%rdi e: e8 43 7c 4d 00 callq 0x4d7c56 13: eb c7 jmp 0xffffffdc 15: 90 nop 16: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1d: fc ff df 20: 41 57 push %r15 22: 89 d1 mov %edx,%ecx 24: 41 89 d7 mov %edx,%r15d 27: 41 56 push %r14 * 29: 4c 8d 76 20 lea 0x20(%rsi),%r14 <-- trapping instruction 2d: 4c 89 f2 mov %r14,%rdx 30: 41 55 push %r13 32: 49 89 fd mov %rdi,%r13 35: 41 54 push %r12 37: 48 c1 ea 03 shr $0x3,%rdx 3b: 41 rex.B 3c: bc .byte 0xbc 3d: 01 00 add %eax,(%rax)