IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready 8021q: adding VLAN 0 to HW filter on device batadv0 INFO: task syz-executor.0:7115 blocked for more than 140 seconds. Not tainted 4.14.179-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D27608 7115 6243 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x780/0x1d20 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 schedule_timeout+0x6e8/0xcc0 kernel/time/timer.c:1723 do_wait_for_common kernel/sched/completion.c:91 [inline] __wait_for_common kernel/sched/completion.c:112 [inline] wait_for_common kernel/sched/completion.c:123 [inline] wait_for_completion+0x263/0x440 kernel/sched/completion.c:144 flush_work+0x38b/0x720 kernel/workqueue.c:2893 __cancel_work_timer+0x286/0x420 kernel/workqueue.c:2964 cancel_work_sync+0xb/0x10 kernel/workqueue.c:3000 p9_conn_destroy net/9p/trans_fd.c:873 [inline] p9_fd_close+0x26f/0x410 net/9p/trans_fd.c:899 p9_client_create+0x99b/0xf40 net/9p/client.c:1095 v9fs_session_init+0x1e1/0x1410 fs/9p/v9fs.c:422 v9fs_mount+0x73/0x770 fs/9p/vfs_super.c:135 mount_fs+0x7f/0x269 fs/super.c:1237 vfs_kern_mount.part.33+0x58/0x3c0 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0x36b/0x26a0 fs/namespace.c:2879 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xb8/0xd0 fs/namespace.c:3072 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459829 RSP: 002b:00007f5bae6a3c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000459829 RDX: 0000000020000040 RSI: 0000000020000000 RDI: 0000000000000000 RBP: 000000000075bf20 R08: 0000000020000140 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000246 R12: 00007f5bae6a46d4 R13: 00000000004c5dcf R14: 00000000004da870 R15: 00000000ffffffff INFO: task syz-executor.2:7142 blocked for more than 140 seconds. Not tainted 4.14.179-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D27608 7142 6246 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x780/0x1d20 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 schedule_timeout+0x6e8/0xcc0 kernel/time/timer.c:1723 do_wait_for_common kernel/sched/completion.c:91 [inline] __wait_for_common kernel/sched/completion.c:112 [inline] wait_for_common kernel/sched/completion.c:123 [inline] wait_for_completion+0x263/0x440 kernel/sched/completion.c:144 flush_work+0x38b/0x720 kernel/workqueue.c:2893 __cancel_work_timer+0x286/0x420 kernel/workqueue.c:2964 cancel_work_sync+0xb/0x10 kernel/workqueue.c:3000 p9_conn_destroy net/9p/trans_fd.c:873 [inline] p9_fd_close+0x26f/0x410 net/9p/trans_fd.c:899 p9_client_create+0x99b/0xf40 net/9p/client.c:1095 v9fs_session_init+0x1e1/0x1410 fs/9p/v9fs.c:422 v9fs_mount+0x73/0x770 fs/9p/vfs_super.c:135 mount_fs+0x7f/0x269 fs/super.c:1237 vfs_kern_mount.part.33+0x58/0x3c0 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0x36b/0x26a0 fs/namespace.c:2879 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xb8/0xd0 fs/namespace.c:3072 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459829 RSP: 002b:00007fc27587ec78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000459829 RDX: 0000000020000040 RSI: 0000000020000000 RDI: 0000000000000000 RBP: 000000000075bf20 R08: 0000000020000140 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000246 R12: 00007fc27587f6d4 R13: 00000000004c5dcf R14: 00000000004da870 R15: 00000000ffffffff INFO: task syz-executor.1:7150 blocked for more than 140 seconds. Not tainted 4.14.179-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.1 D26664 7150 6249 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x780/0x1d20 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 schedule_timeout+0x6e8/0xcc0 kernel/time/timer.c:1723 do_wait_for_common kernel/sched/completion.c:91 [inline] __wait_for_common kernel/sched/completion.c:112 [inline] wait_for_common kernel/sched/completion.c:123 [inline] wait_for_completion+0x263/0x440 kernel/sched/completion.c:144 flush_work+0x38b/0x720 kernel/workqueue.c:2893 __cancel_work_timer+0x286/0x420 kernel/workqueue.c:2964 cancel_work_sync+0xb/0x10 kernel/workqueue.c:3000 p9_conn_destroy net/9p/trans_fd.c:873 [inline] p9_fd_close+0x26f/0x410 net/9p/trans_fd.c:899 p9_client_create+0x99b/0xf40 net/9p/client.c:1095 v9fs_session_init+0x1e1/0x1410 fs/9p/v9fs.c:422 v9fs_mount+0x73/0x770 fs/9p/vfs_super.c:135 mount_fs+0x7f/0x269 fs/super.c:1237 vfs_kern_mount.part.33+0x58/0x3c0 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0x36b/0x26a0 fs/namespace.c:2879 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xb8/0xd0 fs/namespace.c:3072 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459829 RSP: 002b:00007f2dd7a38c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000459829 RDX: 0000000020000040 RSI: 0000000020000000 RDI: 0000000000000000 RBP: 000000000075bf20 R08: 0000000020000140 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000246 R12: 00007f2dd7a396d4 R13: 00000000004c5dcf R14: 00000000004da870 R15: 00000000ffffffff INFO: task syz-executor.4:7174 blocked for more than 140 seconds. Not tainted 4.14.179-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.4 D27608 7174 6251 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x780/0x1d20 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 schedule_timeout+0x6e8/0xcc0 kernel/time/timer.c:1723 do_wait_for_common kernel/sched/completion.c:91 [inline] __wait_for_common kernel/sched/completion.c:112 [inline] wait_for_common kernel/sched/completion.c:123 [inline] wait_for_completion+0x263/0x440 kernel/sched/completion.c:144 flush_work+0x38b/0x720 kernel/workqueue.c:2893 __cancel_work_timer+0x286/0x420 kernel/workqueue.c:2964 cancel_work_sync+0xb/0x10 kernel/workqueue.c:3000 p9_conn_destroy net/9p/trans_fd.c:873 [inline] p9_fd_close+0x26f/0x410 net/9p/trans_fd.c:899 p9_client_create+0x99b/0xf40 net/9p/client.c:1095 v9fs_session_init+0x1e1/0x1410 fs/9p/v9fs.c:422 v9fs_mount+0x73/0x770 fs/9p/vfs_super.c:135 mount_fs+0x7f/0x269 fs/super.c:1237 vfs_kern_mount.part.33+0x58/0x3c0 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0x36b/0x26a0 fs/namespace.c:2879 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xb8/0xd0 fs/namespace.c:3072 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459829 RSP: 002b:00007ff9e0fb3c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000459829 RDX: 0000000020000040 RSI: 0000000020000000 RDI: 0000000000000000 RBP: 000000000075bf20 R08: 0000000020000140 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000246 R12: 00007ff9e0fb46d4 R13: 00000000004c5dcf R14: 00000000004da870 R15: 00000000ffffffff INFO: task syz-executor.3:7183 blocked for more than 140 seconds. Not tainted 4.14.179-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D27608 7183 6248 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x780/0x1d20 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 schedule_timeout+0x6e8/0xcc0 kernel/time/timer.c:1723 do_wait_for_common kernel/sched/completion.c:91 [inline] __wait_for_common kernel/sched/completion.c:112 [inline] wait_for_common kernel/sched/completion.c:123 [inline] wait_for_completion+0x263/0x440 kernel/sched/completion.c:144 flush_work+0x38b/0x720 kernel/workqueue.c:2893 __cancel_work_timer+0x286/0x420 kernel/workqueue.c:2964 cancel_work_sync+0xb/0x10 kernel/workqueue.c:3000 p9_conn_destroy net/9p/trans_fd.c:873 [inline] p9_fd_close+0x26f/0x410 net/9p/trans_fd.c:899 p9_client_create+0x99b/0xf40 net/9p/client.c:1095 v9fs_session_init+0x1e1/0x1410 fs/9p/v9fs.c:422 v9fs_mount+0x73/0x770 fs/9p/vfs_super.c:135 mount_fs+0x7f/0x269 fs/super.c:1237 vfs_kern_mount.part.33+0x58/0x3c0 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0x36b/0x26a0 fs/namespace.c:2879 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xb8/0xd0 fs/namespace.c:3072 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459829 RSP: 002b:00007f69bc263c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000459829 RDX: 0000000020000040 RSI: 0000000020000000 RDI: 0000000000000000 RBP: 000000000075bf20 R08: 0000000020000140 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000246 R12: 00007f69bc2646d4 R13: 00000000004c5dcf R14: 00000000004da870 R15: 00000000ffffffff INFO: task syz-executor.5:7189 blocked for more than 140 seconds. Not tainted 4.14.179-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D27608 7189 6252 0x00000004 Call Trace: context_switch kernel/sched/core.c:2808 [inline] __schedule+0x780/0x1d20 kernel/sched/core.c:3384 schedule+0x7f/0x1b0 kernel/sched/core.c:3428 schedule_timeout+0x6e8/0xcc0 kernel/time/timer.c:1723 do_wait_for_common kernel/sched/completion.c:91 [inline] __wait_for_common kernel/sched/completion.c:112 [inline] wait_for_common kernel/sched/completion.c:123 [inline] wait_for_completion+0x263/0x440 kernel/sched/completion.c:144 flush_work+0x38b/0x720 kernel/workqueue.c:2893 __cancel_work_timer+0x286/0x420 kernel/workqueue.c:2964 cancel_work_sync+0xb/0x10 kernel/workqueue.c:3000 p9_conn_destroy net/9p/trans_fd.c:873 [inline] p9_fd_close+0x26f/0x410 net/9p/trans_fd.c:899 p9_client_create+0x99b/0xf40 net/9p/client.c:1095 v9fs_session_init+0x1e1/0x1410 fs/9p/v9fs.c:422 v9fs_mount+0x73/0x770 fs/9p/vfs_super.c:135 mount_fs+0x7f/0x269 fs/super.c:1237 vfs_kern_mount.part.33+0x58/0x3c0 fs/namespace.c:1046 vfs_kern_mount fs/namespace.c:1036 [inline] do_new_mount fs/namespace.c:2549 [inline] do_mount+0x36b/0x26a0 fs/namespace.c:2879 SYSC_mount fs/namespace.c:3095 [inline] SyS_mount+0xb8/0xd0 fs/namespace.c:3072 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459829 RSP: 002b:00007f1bc1015c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000459829 RDX: 0000000020000040 RSI: 0000000020000000 RDI: 0000000000000000 RBP: 000000000075bf20 R08: 0000000020000140 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000246 R12: 00007f1bc10166d4 R13: 00000000004c5dcf R14: 00000000004da870 R15: 00000000ffffffff Showing all locks held in the system: 2 locks held by kworker/0:0/3: #0: ("events"){+.+.}, at: [] work_static include/linux/workqueue.h:199 [inline] #0: ("events"){+.+.}, at: [] set_work_data kernel/workqueue.c:619 [inline] #0: ("events"){+.+.}, at: [] set_work_pool_and_clear_pending kernel/workqueue.c:646 [inline] #0: ("events"){+.+.}, at: [] process_one_work+0x6cd/0x16c0 kernel/workqueue.c:2087 #1: ((&m->wq)){+.+.}, at: [] process_one_work+0x703/0x16c0 kernel/workqueue.c:2091 2 locks held by kworker/0:1/24: #0: ("events"){+.+.}, at: [] work_static include/linux/workqueue.h:199 [inline] #0: ("events"){+.+.}, at: [] set_work_data kernel/workqueue.c:619 [inline] #0: ("events"){+.+.}, at: [] set_work_pool_and_clear_pending kernel/workqueue.c:646 [inline] #0: ("events"){+.+.}, at: [] process_one_work+0x6cd/0x16c0 kernel/workqueue.c:2087 #1: ((&m->wq)){+.+.}, at: [] process_one_work+0x703/0x16c0 kernel/workqueue.c:2091 1 lock held by khungtaskd/1016: #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x79/0x218 kernel/locking/lockdep.c:4548 1 lock held by in:imklog/5755: #0: (&f->f_pos_lock){+.+.}, at: [] __fdget_pos+0x8e/0xc0 fs/file.c:769 2 locks held by kworker/0:3/5759: #0: ("events"){+.+.}, at: [] work_static include/linux/workqueue.h:199 [inline] #0: ("events"){+.+.}, at: [] set_work_data kernel/workqueue.c:619 [inline] #0: ("events"){+.+.}, at: [] set_work_pool_and_clear_pending kernel/workqueue.c:646 [inline] #0: ("events"){+.+.}, at: [] process_one_work+0x6cd/0x16c0 kernel/workqueue.c:2087 #1: ((&m->wq)){+.+.}, at: [] process_one_work+0x703/0x16c0 kernel/workqueue.c:2091 2 locks held by kworker/0:4/6798: #0: ("events"){+.+.}, at: [] work_static include/linux/workqueue.h:199 [inline] #0: ("events"){+.+.}, at: [] set_work_data kernel/workqueue.c:619 [inline] #0: ("events"){+.+.}, at: [] set_work_pool_and_clear_pending kernel/workqueue.c:646 [inline] #0: ("events"){+.+.}, at: [] process_one_work+0x6cd/0x16c0 kernel/workqueue.c:2087 #1: ((&m->wq)){+.+.}, at: [] process_one_work+0x703/0x16c0 kernel/workqueue.c:2091 2 locks held by kworker/0:5/7140: #0: ("events"){+.+.}, at: [] work_static include/linux/workqueue.h:199 [inline] #0: ("events"){+.+.}, at: [] set_work_data kernel/workqueue.c:619 [inline] #0: ("events"){+.+.}, at: [] set_work_pool_and_clear_pending kernel/workqueue.c:646 [inline] #0: ("events"){+.+.}, at: [] process_one_work+0x6cd/0x16c0 kernel/workqueue.c:2087 #1: ((&m->wq)){+.+.}, at: [] process_one_work+0x703/0x16c0 kernel/workqueue.c:2091 2 locks held by kworker/0:6/7147: #0: ("events"){+.+.}, at: [] work_static include/linux/workqueue.h:199 [inline] #0: ("events"){+.+.}, at: [] set_work_data kernel/workqueue.c:619 [inline] #0: ("events"){+.+.}, at: [] set_work_pool_and_clear_pending kernel/workqueue.c:646 [inline] #0: ("events"){+.+.}, at: [] process_one_work+0x6cd/0x16c0 kernel/workqueue.c:2087 #1: ((&m->wq)){+.+.}, at: [] process_one_work+0x703/0x16c0 kernel/workqueue.c:2091 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1016 Comm: khungtaskd Not tainted 4.14.179-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0xf7/0x13b lib/dump_stack.c:58 nmi_cpu_backtrace.cold.4+0x3e/0x76 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0xe5/0x119 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:140 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:195 [inline] watchdog+0x522/0xb40 kernel/hung_task.c:274 kthread+0x338/0x400 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 5 Comm: kworker/u4:0 Not tainted 4.14.179-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: bat_events batadv_nc_worker task: ffff8880a9cca140 task.stack: ffff8880a9cd0000 RIP: 0010:trace_hardirqs_off_caller+0x5d/0x2b0 kernel/locking/lockdep.c:2950 RSP: 0018:ffff8880a9cd7c28 EFLAGS: 00000002 RAX: 0000000000000003 RBX: ffff8880a9cca140 RCX: 1ffff11015399537 RDX: 0000000000000004 RSI: 0000000000000201 RDI: 0000000000000001 RBP: ffff8880a9cd7c40 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000050 R11: ffff8880a9cca140 R12: ffff8880a9cca140 R13: ffffffff813805ac R14: 0000000000000000 R15: ffff8880952d0d40 FS: 0000000000000000(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fbb8d7b6020 CR3: 00000000949cf000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: trace_hardirqs_off+0xd/0x10 kernel/locking/lockdep.c:2975 __local_bh_enable_ip+0x5c/0x180 kernel/softirq.c:167 __raw_spin_unlock_bh include/linux/spinlock_api_smp.h:176 [inline] _raw_spin_unlock_bh+0x30/0x40 kernel/locking/spinlock.c:208 spin_unlock_bh include/linux/spinlock.h:362 [inline] batadv_nc_purge_paths+0x1d6/0x2f0 net/batman-adv/network-coding.c:479 batadv_nc_worker+0x228/0x630 net/batman-adv/network-coding.c:729 process_one_work+0x79e/0x16c0 kernel/workqueue.c:2116 worker_thread+0xcc/0xee0 kernel/workqueue.c:2250 kthread+0x338/0x400 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Code: 48 8b 1c 25 40 ee 01 00 38 d0 7c 08 84 d2 0f 85 02 02 00 00 8b 3d 04 b6 84 06 85 ff 0f 84 64 01 00 00 65 4c 8b 24 25 40 ee 01 00 <49> 8d bc 24 84 08 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa