INFO: task syz-executor.5:29605 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 D28848 29605 26106 0x00000004 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 tmpfs: No value for mount option 'h algqWb۪lways' schedule+0x8d/0x1b0 kernel/sched/core.c:3561 schedule_timeout+0x92d/0xfe0 kernel/time/timer.c:1794 audit: type=1804 audit(1668719277.637:2979): pid=4276 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir667946629/syzkaller.eKO49t/1748/bus" dev="sda1" ino=14649 res=1 tmpfs: No value for mount option 'h algqWb۪lways' audit: type=1804 audit(1668719277.667:2980): pid=4276 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir667946629/syzkaller.eKO49t/1748/bus" dev="sda1" ino=14649 res=1 tmpfs: No value for mount option 'h algqWb۪lways' IPVS: ftp: loaded support on port[0] = 21 do_wait_for_common kernel/sched/completion.c:83 [inline] __wait_for_common kernel/sched/completion.c:104 [inline] wait_for_common+0x29c/0x470 kernel/sched/completion.c:115 tmpfs: No value for mount option 'h algqWb۪lways' audit: type=1804 audit(1668719277.667:2981): pid=4276 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir667946629/syzkaller.eKO49t/1748/bus" dev="sda1" ino=14649 res=1 usb_start_wait_urb+0x14b/0x4c0 drivers/usb/core/message.c:62 tmpfs: No value for mount option 'h algqWb۪lways' audit: type=1804 audit(1668719277.667:2982): pid=4276 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir667946629/syzkaller.eKO49t/1748/bus" dev="sda1" ino=14649 res=1 tmpfs: No value for mount option 'h algqWb۪lways' usb_bulk_msg+0x226/0x550 drivers/usb/core/message.c:253 proc_bulk+0x3de/0x860 drivers/usb/core/devio.c:1211 audit: type=1804 audit(1668719277.667:2983): pid=4276 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir667946629/syzkaller.eKO49t/1748/bus" dev="sda1" ino=14649 res=1 tmpfs: No value for mount option 'h algqWb۪lways' usbdev_do_ioctl+0x696/0x3030 drivers/usb/core/devio.c:2435 audit: type=1804 audit(1668719277.667:2984): pid=4276 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir667946629/syzkaller.eKO49t/1748/bus" dev="sda1" ino=14649 res=1 tmpfs: No value for mount option 'h algqWb۪lways' audit: type=1804 audit(1668719277.667:2985): pid=4276 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir667946629/syzkaller.eKO49t/1748/bus" dev="sda1" ino=14649 res=1 audit: type=1804 audit(1668719277.677:2986): pid=4276 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir667946629/syzkaller.eKO49t/1748/bus" dev="sda1" ino=14649 res=1 audit: type=1804 audit(1668719277.677:2987): pid=4276 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir667946629/syzkaller.eKO49t/1748/bus" dev="sda1" ino=14649 res=1 usbdev_ioctl+0x21/0x30 drivers/usb/core/devio.c:2585 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688 audit: type=1804 audit(1668719277.677:2988): pid=4276 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir667946629/syzkaller.eKO49t/1748/bus" dev="sda1" ino=14649 res=1 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fd697c56639 Code: Bad RIP value. RSP: 002b:00007fd6961c9168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fd697d76f80 RCX: 00007fd697c56639 RDX: 0000000020000000 RSI: 00000000c0185502 RDI: 0000000000000003 RBP: 00007fd697cb1ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd35d68adf R14: 00007fd6961c9300 R15: 0000000000022000 Showing all locks held in the system: 3 locks held by kworker/u4:1/23: 1 lock held by khungtaskd/1570: #0: 00000000687de1ed (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 1 lock held by in:imklog/7826: #0: 00000000a9c754f7 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 2 locks held by agetty/7827: #0: 00000000e07d86f0 (&tty->ldisc_sem){++++}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:272 #1: 00000000f79e4760 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x217/0x1950 drivers/tty/n_tty.c:2154 2 locks held by kworker/1:3/8151: #0: 00000000d4b6aa8f ((wq_completion)"rcu_gp"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 000000001a545ed6 ((work_completion)(&rew.rew_work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 1 lock held by syz-executor.3/4238: #0: 00000000ff197793 (rcu_preempt_state.barrier_mutex){+.+.}, at: _rcu_barrier+0x59/0x3e0 kernel/rcu/tree.c:3430 1 lock held by syz-executor.3/4251: #0: 00000000ff197793 (rcu_preempt_state.barrier_mutex){+.+.}, at: _rcu_barrier+0x59/0x3e0 kernel/rcu/tree.c:3430 2 locks held by syz-executor.0/4293: #0: 00000000310f6f6b (pernet_ops_rwsem){++++}, at: copy_net_ns+0x1d8/0x340 net/core/net_namespace.c:435 #1: 00000000915e633f (rtnl_mutex){+.+.}, at: gtp_net_exit+0x1ba/0x380 drivers/net/gtp.c:1360 2 locks held by syz-executor.5/4322: #0: 00000000915e633f (rtnl_mutex){+.+.}, at: rtnl_lock net/core/rtnetlink.c:77 [inline] #0: 00000000915e633f (rtnl_mutex){+.+.}, at: rtnetlink_rcv_msg+0x3fe/0xb80 net/core/rtnetlink.c:4779 #1: 00000000bf53230b (rcu_preempt_state.exp_mutex){+.+.}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline] #1: 00000000bf53230b (rcu_preempt_state.exp_mutex){+.+.}, at: _synchronize_rcu_expedited+0x4dc/0x6f0 kernel/rcu/tree_exp.h:667 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 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: 4693 Comm: systemd-journal Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:___bpf_prog_run+0x66/0x4e80 kernel/bpf/core.c:1065 Code: 89 44 24 18 e8 8b 4e f6 ff 4c 89 f0 4c 89 f2 48 c1 e8 03 83 e2 07 0f b6 04 18 38 d0 7f 08 84 c0 0f 85 f7 38 00 00 45 0f b6 3e <4a> 8d 3c fd 60 b4 6f 88 4c 89 fe 48 89 f8 48 c1 e8 03 80 3c 18 00 RSP: 0018:ffff8880a0f2fa30 EFLAGS: 00000246 RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffffff816c6963 RDX: 0000000000000000 RSI: ffffffff816c36e5 RDI: 0000000000000006 RBP: ffff8880a0f2fb00 R08: 0000000000000000 R09: 0000000000000027 R10: 0000000000000006 R11: 0000000000000000 R12: ffffffff886fb460 R13: ffffed10141e5f62 R14: ffffc90001ad40f0 R15: 0000000000000015 FS: 00007f898f72b8c0(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f898c5e4000 CR3: 00000000a16fa000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: