team0 (unregistering): Port device team_slave_1 removed team0 (unregistering): Port device team_slave_0 removed bond0 (unregistering): Releasing backup interface bond_slave_1 bond0 (unregistering): Releasing backup interface bond_slave_0 bond0 (unregistering): Released all slaves INFO: task syz-executor4:13522 blocked for more than 140 seconds. Not tainted 5.0.0-rc4+ #50 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor4 D25832 13522 12348 0x00000004 Call Trace: context_switch kernel/sched/core.c:2844 [inline] __schedule+0x897/0x1e60 kernel/sched/core.c:3485 schedule+0xfe/0x350 kernel/sched/core.c:3529 request_wait_answer+0x4af/0x8d0 fs/fuse/dev.c:530 __fuse_request_send+0x12b/0x1d0 fs/fuse/dev.c:550 fuse_request_send+0x60/0xa0 fs/fuse/dev.c:563 fuse_simple_request+0x2f6/0x730 fs/fuse/dev.c:621 fuse_do_getattr+0x3c3/0x1440 fs/fuse/dir.c:908 fuse_perm_getattr+0x3d/0x60 fs/fuse/dir.c:1091 fuse_permission+0x4e8/0x5d0 fs/fuse/dir.c:1128 do_inode_permission fs/namei.c:386 [inline] inode_permission+0x36d/0x570 fs/namei.c:451 may_open.isra.0+0x1ad/0x320 fs/namei.c:2973 do_last fs/namei.c:3414 [inline] path_openat+0x13c5/0x5650 fs/namei.c:3534 do_filp_open+0x26f/0x370 fs/namei.c:3564 do_open_execat+0x20e/0x930 fs/exec.c:856 __do_execve_file.isra.0+0x1966/0x2700 fs/exec.c:1758 do_execveat_common fs/exec.c:1865 [inline] do_execve fs/exec.c:1882 [inline] __do_sys_execve fs/exec.c:1963 [inline] __se_sys_execve fs/exec.c:1958 [inline] __x64_sys_execve+0x8f/0xc0 fs/exec.c:1958 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x458089 Code: 8b 4b 10 4c 8b 53 08 48 8b 1b 49 39 ca 0f 87 23 01 00 00 48 89 74 24 38 48 89 7c 24 30 4c 89 44 24 28 44 88 4c 24 27 48 89 54 <24> 50 48 89 44 24 40 48 c7 80 f8 00 00 00 00 00 00 00 4c 89 90 00 RSP: 002b:00007fee00ad2c78 EFLAGS: 00000246 ORIG_RAX: 000000000000003b RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000458089 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200004c0 RBP: 000000000073bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fee00ad36d4 R13: 00000000004be68f R14: 00000000004cee28 R15: 00000000ffffffff Showing all locks held in the system: 1 lock held by khungtaskd/1041: #0: 00000000f9eccbdf (rcu_read_lock){....}, at: debug_show_all_locks+0xc6/0x41d kernel/locking/lockdep.c:4389 2 locks held by rs:main Q:Reg/7908: #0: 0000000059dbefc1 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1b3/0x1f0 fs/file.c:795 #1: 00000000802026b8 (sb_writers#3){.+.+}, at: file_start_write include/linux/fs.h:2815 [inline] #1: 00000000802026b8 (sb_writers#3){.+.+}, at: vfs_write+0x429/0x580 fs/read_write.c:548 1 lock held by rsyslogd/7910: #0: 000000004181c979 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x1b3/0x1f0 fs/file.c:795 2 locks held by getty/8001: #0: 00000000a6f9b6e1 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000282cb40c (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/8002: #0: 00000000818c0b48 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000969d86c5 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/8003: #0: 0000000072dd1bc1 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000958125d8 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/8004: #0: 000000003fc868a7 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000e85c0d81 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/8005: #0: 00000000c0e86d63 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 00000000a0a602b9 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/8006: #0: 0000000086708765 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 000000009e8a0fd9 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 2 locks held by getty/8007: #0: 00000000395f47f7 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:341 #1: 0000000004ec6b91 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x30a/0x1eb0 drivers/tty/n_tty.c:2154 1 lock held by syz-executor4/13522: #0: 00000000d3e7bd7b (&sig->cred_guard_mutex){+.+.}, at: prepare_bprm_creds fs/exec.c:1407 [inline] #0: 00000000d3e7bd7b (&sig->cred_guard_mutex){+.+.}, at: __do_execve_file.isra.0+0x45d/0x2700 fs/exec.c:1750 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1041 Comm: khungtaskd Not tainted 5.0.0-rc4+ #50 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+0x1db/0x2d0 lib/dump_stack.c:113 nmi_cpu_backtrace.cold+0x63/0xa4 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1be/0x236 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:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0xbbb/0x1170 kernel/hung_task.c:287 kthread+0x357/0x430 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: 7 Comm: kworker/u4:0 Not tainted 5.0.0-rc4+ #50 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_nc_worker RIP: 0010:lock_acquire+0x166/0x570 kernel/locking/lockdep.c:3839 Code: 00 00 65 48 8b 1c 25 40 ee 01 00 48 8d bb 7c 08 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 <83> e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 cd 02 00 00 c7 83 7c 08 RSP: 0018:ffff8880a944f7d0 EFLAGS: 00000807 RAX: ffff8880a9440a3c RBX: ffff8880a94401c0 RCX: 0000000000000002 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880a9440a3c RBP: ffff8880a944f8a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: ffff8880a944f878 R12: ffffffff899a4240 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000002 FS: 0000000000000000(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffff600400 CR3: 000000008545b000 CR4: 00000000001406f0 Call Trace: rcu_lock_acquire include/linux/rcupdate.h:223 [inline] rcu_read_lock include/linux/rcupdate.h:607 [inline] batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:419 [inline] batadv_nc_worker+0x19b/0x920 net/batman-adv/network-coding.c:730 process_one_work+0xd0c/0x1ce0 kernel/workqueue.c:2153 worker_thread+0x143/0x14a0 kernel/workqueue.c:2296 kthread+0x357/0x430 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352