binder: 16875:16876 transaction failed 29201/-22, size 0-0 line 2825 INFO: task syz-executor0:11918 blocked for more than 140 seconds. Not tainted 4.19.0+ #319 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D25208 11918 5669 0x00000000 Call Trace: context_switch kernel/sched/core.c:2831 [inline] __schedule+0x8cf/0x21d0 kernel/sched/core.c:3472 schedule+0xfe/0x460 kernel/sched/core.c:3516 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3574 __mutex_lock_common kernel/locking/mutex.c:1002 [inline] __mutex_lock+0xaff/0x16f0 kernel/locking/mutex.c:1072 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 pipe_lock_nested fs/pipe.c:62 [inline] pipe_lock+0x6e/0x80 fs/pipe.c:70 do_splice+0xe79/0x1430 fs/splice.c:1170 __do_sys_splice fs/splice.c:1414 [inline] __se_sys_splice fs/splice.c:1394 [inline] __x64_sys_splice+0x2c1/0x330 fs/splice.c:1394 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457569 Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f316f6cfc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000457569 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: 000000000072bf00 R08: 000000000000ced1 R09: 0000000000000008 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f316f6d06d4 R13: 00000000004c51d3 R14: 00000000004d7f48 R15: 00000000ffffffff Showing all locks held in the system: 1 lock held by khungtaskd/1013: #0: 00000000664ea71c (rcu_read_lock){....}, at: debug_show_all_locks+0xd0/0x424 kernel/locking/lockdep.c:4379 1 lock held by rsyslogd/5541: #0: 000000005ac1c946 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1bb/0x200 fs/file.c:766 2 locks held by getty/5631: #0: 00000000d14b5300 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 000000001db79e19 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 2 locks held by getty/5632: #0: 00000000757b4644 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 0000000074603dda (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 2 locks held by getty/5633: #0: 00000000ffc66515 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 000000001a02ca79 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 2 locks held by getty/5634: #0: 00000000183addaa (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 00000000c9bc94c8 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 2 locks held by getty/5635: #0: 000000003d3af528 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 00000000309cf352 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 2 locks held by getty/5636: #0: 000000002d0eecad (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 00000000f2f9eb8c (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 2 locks held by getty/5637: #0: 00000000beefb6a1 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 drivers/tty/tty_ldsem.c:353 #1: 00000000f7f53d69 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x335/0x1e80 drivers/tty/n_tty.c:2154 2 locks held by kworker/0:3/5862: #0: 00000000df641ce4 ((wq_completion)"events"){+.+.}, at: __write_once_size include/linux/compiler.h:209 [inline] #0: 00000000df641ce4 ((wq_completion)"events"){+.+.}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: 00000000df641ce4 ((wq_completion)"events"){+.+.}, at: atomic64_set include/asm-generic/atomic-instrumented.h:40 [inline] #0: 00000000df641ce4 ((wq_completion)"events"){+.+.}, at: atomic_long_set include/asm-generic/atomic-long.h:59 [inline] #0: 00000000df641ce4 ((wq_completion)"events"){+.+.}, at: set_work_data kernel/workqueue.c:617 [inline] #0: 00000000df641ce4 ((wq_completion)"events"){+.+.}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: 00000000df641ce4 ((wq_completion)"events"){+.+.}, at: process_one_work+0xb43/0x1c40 kernel/workqueue.c:2124 #1: 0000000033673b1a (key_gc_work){+.+.}, at: process_one_work+0xb9a/0x1c40 kernel/workqueue.c:2128 1 lock held by syz-executor0/11782: #0: 00000000d402ce67 (&pipe->mutex/1){+.+.}, at: pipe_lock_nested fs/pipe.c:62 [inline] #0: 00000000d402ce67 (&pipe->mutex/1){+.+.}, at: pipe_lock+0x6e/0x80 fs/pipe.c:70 1 lock held by syz-executor0/11918: #0: 00000000d402ce67 (&pipe->mutex/1){+.+.}, at: pipe_lock_nested fs/pipe.c:62 [inline] #0: 00000000d402ce67 (&pipe->mutex/1){+.+.}, at: pipe_lock+0x6e/0x80 fs/pipe.c:70 1 lock held by syz-executor3/16908: 1 lock held by udevd/16910: ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1013 Comm: khungtaskd Not tainted 4.19.0+ #319 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+0x244/0x39d lib/dump_stack.c:113 nmi_cpu_backtrace.cold.2+0x5c/0xa1 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1e8/0x22a lib/nmi_backtrace.c:62 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38 trigger_all_cpu_backtrace include/linux/nmi.h:144 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:205 [inline] watchdog+0xb51/0x1060 kernel/hung_task.c:289 kthread+0x35a/0x440 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 3505 Comm: udevd Not tainted 4.19.0+ #319 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:vsnprintf+0xa8e/0x1b60 lib/vsprintf.c:2324 Code: 95 68 ff ff ff e8 12 af b4 f9 48 8b 8d 70 ff ff ff 48 b8 00 00 00 00 00 fc ff df 48 8b 95 68 ff ff ff 48 c1 e9 03 0f b6 0c 01 <84> c9 74 09 80 f9 03 0f 8e 33 0d 00 00 48 8b 85 70 ff ff ff 48 c7 RSP: 0018:ffff8801c736f220 EFLAGS: 00000802 RAX: dffffc0000000000 RBX: ffffffff8b09c361 RCX: 0000000000000000 RDX: 0000000000000009 RSI: ffffffff87cadbae RDI: 0000000000000001 RBP: ffff8801c736f2f0 R08: ffff8801c7364680 R09: fffffbfff161386c R10: fffffbfff161386c R11: ffffffff8b09c360 R12: ffffffff882bec61 R13: 0000000000000009 R14: ffffffff882bec65 R15: ffff8801c736f2c8 FS: 00007fdca79857a0(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000022e3978 CR3: 00000001c727a000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: sprintf+0xb0/0xe0 lib/vsprintf.c:2498 print_time kernel/printk/printk.c:1228 [inline] print_prefix+0x26a/0x3f0 kernel/printk/printk.c:1251 msg_print_text+0xcc/0x1d0 kernel/printk/printk.c:1278 console_unlock+0x4e6/0x1190 kernel/printk/printk.c:2388 vprintk_emit+0x391/0x990 kernel/printk/printk.c:1922 vprintk_default+0x28/0x30 kernel/printk/printk.c:1964 vprintk_func+0x7e/0x181 kernel/printk/printk_safe.c:398 printk+0xa7/0xcf kernel/printk/printk.c:1997 kobject_uevent_env+0x96/0x101e lib/kobject_uevent.c:467 kobject_synth_uevent.cold.5+0x10e/0x17b lib/kobject_uevent.c:208 uevent_store+0x26/0x70 drivers/base/core.c:1070 dev_attr_store+0x5e/0x90 drivers/base/core.c:781 sysfs_kf_write+0x118/0x170 fs/sysfs/file.c:139 kernfs_fop_write+0x2ba/0x480 fs/kernfs/file.c:316 __vfs_write+0x119/0x9f0 fs/read_write.c:485 vfs_write+0x1fc/0x560 fs/read_write.c:549 ksys_write+0x101/0x260 fs/read_write.c:598 __do_sys_write fs/read_write.c:610 [inline] __se_sys_write fs/read_write.c:607 [inline] __x64_sys_write+0x73/0xb0 fs/read_write.c:607 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fdca708d370 Code: 73 01 c3 48 8b 0d c8 4a 2b 00 31 d2 48 29 c2 64 89 11 48 83 c8 ff eb ea 90 90 83 3d 85 a2 2b 00 00 75 10 b8 01 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 0e 8a 01 00 48 89 04 24 RSP: 002b:00007ffd3daa8bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00000000006b96a0 RCX: 00007fdca708d370 RDX: 0000000000000006 RSI: 000000000041f4f9 RDI: 000000000000000b RBP: 00000000006a4400 R08: 000000000041f4f1 R09: 00007fdca70e37d0 R10: 7269762f73656369 R11: 0000000000000246 R12: 000000000000000b R13: 0000000000000000 R14: 00000000006b96a0 R15: 00000000006a0250 kobject: 'kvm' (00000000ffe7c287): kobject_uevent_env kobject: 'kvm' (00000000ffe7c287): kobject_uevent_env